[maven-release-plugin] prepare release record-builder-24

Great suggestion from @Twisol. There's no need for the downcasting
if record component methods are added to the Wither interface.

Closes #27

README.md

@@ -1,5 +1,5 @@
 [![Build Status](https://github.com/Randgalt/record-builder/workflows/Java%20CI%20with%20Maven/badge.svg)](https://github.com/Randgalt/record-builder/actions)
-[![Maven Central](https://img.shields.io/maven-central/v/io.soabase.record-builder/record-builder.svg)](https://search.maven.org/search?q=g:io.soabase.record-builder%20a:record-builder)
+[![Maven Central](https://img.shields.io/maven-central/v/io.soabase.record-builder/record-builder.svg?sort=date)](https://search.maven.org/search?q=g:io.soabase.record-builder%20a:record-builder)
 
 # RecordBuilder
 
@@ -21,7 +21,7 @@ _Details:_
 - [Record From Interface Details](#RecordInterface-Example)
 - [Generation Via Includes](#generation-via-includes)
 - [Usage](#usage)
-- [Customizing](#customizing)
+- [Customizing](customizing.md)
 - [Java 15 Versions](#java-15-versions)
 
 ## RecordBuilder Example
@@ -71,6 +71,15 @@ NameAndAge r4 = r3.with().age(101).name("baz").build();
 
 // alternate method of accessing the builder (note: no need to call "build()")
 NameAndAge r5 = r4.with(b -> b.age(200).name("whatever"));
+
+// perform some logic in addition to changing values
+NameAndAge r5 = r4.with(b -> {
+   if (b.age() > 13) {
+       b.name("Teen " + b.name());
+   } else {
+       b.name("whatever"));
+   }
+});
 ```
 
 _Hat tip to [Benji Weber](https://benjiweber.co.uk/blog/2020/09/19/fun-with-java-records/) for the Withers idea._
@@ -175,29 +184,26 @@ public class NameAndAgeBuilder {
                 && Objects.equals(name, b.name)
                 && (age == b.age));
     }
-
-    /**
-     * Downcast to {@code NameAndAge}
-     */
-    private static NameAndAge _downcast(Object obj) {
-        try {
-            return (NameAndAge)obj;
-        }
-        catch (ClassCastException dummy) {
-            throw new RuntimeException("NameAndAgeBuilder.With can only be implemented for NameAndAge");
-        }
-    }
-
+    
     /**
      * Add withers to {@code NameAndAge}
      */
     public interface With {
+        /**
+         * Return the current value for the {@code name} record component in the builder
+         */
+        String name();
+
+        /**
+         * Return the current value for the {@code age} record component in the builder
+         */
+        int age();
+
         /**
          * Return a new record builder using the current values
          */
         default NameAndAgeBuilder with() {
-            NameAndAge r = _downcast(this);
-            return NameAndAgeBuilder.builder(r);
+            return new NameAndAgeBuilder(name(), age());
         }
 
         /**
@@ -213,16 +219,14 @@ public class NameAndAgeBuilder {
          * Return a new instance of {@code NameAndAge} with a new value for {@code name}
          */
         default NameAndAge withName(String name) {
-            NameAndAge r = _downcast(this);
-            return new NameAndAge(name, r.age());
+            return new NameAndAge(name, age());
         }
 
         /**
          * Return a new instance of {@code NameAndAge} with a new value for {@code age}
          */
         default NameAndAge withAge(int age) {
-            NameAndAge r = _downcast(this);
-            return new NameAndAge(r.name(), age);
+            return new NameAndAge(name(), age);
         }
     }
 }
@@ -268,7 +272,7 @@ libraries where you are not able to annotate the source.
 
 E.g.
 
-```
+```java
 import some.library.code.ImportedRecord
 import some.library.code.ImportedInterface
 
@@ -291,7 +295,7 @@ annotation. Use `packagePattern` to change this (see Javadoc for details).
 
 1) Add the dependency that contains the `@RecordBuilder` annotation.
 
-```
+```xml
 <dependency>
     <groupId>io.soabase.record-builder</groupId>
     <artifactId>record-builder-core</artifactId>
@@ -303,7 +307,7 @@ annotation. Use `packagePattern` to change this (see Javadoc for details).
 
 2) Enable the annotation processing for the Maven Compiler Plugin:
 
-```
+```xml
 <plugin>
     <groupId>org.apache.maven.plugins</groupId>
     <artifactId>maven-compiler-plugin</artifactId>
@@ -330,7 +334,7 @@ annotation. Use `packagePattern` to change this (see Javadoc for details).
 
 Add the following to your build.gradle file:
 
-```
+```groovy
 dependencies {
     annotationProcessor 'io.soabase.record-builder:record-builder-processor:$version-goes-here'
     compileOnly 'io.soabase.record-builder:record-builder-core:$version-goes-here'
@@ -343,30 +347,13 @@ Depending on your IDE you are likely to need to enable Annotation Processing in
 
 ## Customizing
 
-The names of the generated methods, etc. are determined by [RecordBuilderMetaData](https://github.com/Randgalt/record-builder/blob/master/record-builder-core/src/main/java/io/soabase/recordbuilder/core/RecordBuilderMetaData.java). If you want to use your own meta data instance:
-
-- Create a class that implements RecordBuilderMetaData
-- When compiling, make sure that the compiled class is in the processor path
-- Add a "metaDataClass" compiler option with the class name. E.g. `javac ... -AmetaDataClass=foo.bar.MyMetaData`
-
-Alternatively, you can provide values for each individual meta data (or combinations):
-
-- `javac ... -Asuffix=foo`
-- `javac ... -AinterfaceSuffix=foo`
-- `javac ... -AcopyMethodName=foo`
-- `javac ... -AbuilderMethodName=foo`
-- `javac ... -AbuildMethodName=foo`
-- `javac ... -AcomponentsMethodName=foo`
-- `javac ... -AwithClassName=foo`
-- `javac ... -AwithClassMethodPrefix=foo`
-- `javac ... -AfileComment=foo`
-- `javac ... -AfileIndent=foo`
-- `javac ... -AprefixEnclosingClassNames=foo`
+RecordBuilder can be customized to your needs and you can even create your
+own custom RecordBuilder annotations. See [Customizing RecordBuilder](customizing.md)
+for details.
 
 ## Java 15 Versions
 
-Artifacts compiled wth Java 15 are available. They are the same versions
-as the Java 16 versions with `-java15` appended.
+Artifacts compiled wth Java 15 are available. These versions have `-java15` appended.
 
 Note: records are a preview feature only in Java 15. You'll need take a number of steps in order to try RecordBuilder:
 
@@ -380,7 +367,7 @@ You will need to enable preview in your build tools:
 
 ### Maven
 
-```
+```xml
 <dependencies>
     <dependency>
         <groupId>io.soabase.record-builder</groupId>
@@ -421,7 +408,7 @@ Create a file in your project's root named `.mvn/jvm.config`. The file should ha
 
 ### Gradle
 
-```
+```groovy
 dependencies {
     annotationProcessor 'io.soabase.record-builder:record-builder-processor:$record-builder-version-java15'
     compileOnly 'io.soabase.record-builder:record-builder-core:$record-builder-version-java15'

customizing.md

@@ -0,0 +1,85 @@
+[◀︎ RecordBuilder](README.md) • Customizing RecordBuilder
+
+# Customizing RecordBuilder
+
+RecordBuilder can be customized in a number of ways. The types of customizations will change over time. See
+[@RecordBuilder.Options](record-builder-core/src/main/java/io/soabase/recordbuilder/core/RecordBuilder.java)
+for the current set of customizations and their default values. 
+
+You can:
+
+- [Customize an entire build](#customize-an-entire-build) - all uses of `@RecordBuilder` in your project
+- [Customize a single record](#customize-a-single-record) annotated with `@RecordBuilder`
+- [Create a custom annotation](#create-a-custom-annotation) that specifies your options and use that instead of `@RecordBuilder`
+
+## Customize an entire build
+
+To customize an entire build, use javac's annotation processor options via `-A` on the command line.
+The options available are the same as the attributes in [@RecordBuilder.Options](record-builder-core/src/main/java/io/soabase/recordbuilder/core/RecordBuilder.java).
+i.e. to disable "prefixing enclosing class names", compile with:
+
+```shell
+javac -AprefixEnclosingClassNames=false ...
+```
+
+_Note: use a separate `-A` for each option._
+
+#### Maven
+
+If you are using Maven, specify the options in the compiler plugin:
+
+```xml
+<plugin>
+    <groupId>org.apache.maven.plugins</groupId>
+    <artifactId>maven-compiler-plugin</artifactId>
+    <version>${maven-compiler-plugin-version}</version>
+    <configuration>
+        <compilerArgs>
+            <arg>-AprefixEnclosingClassNames=false</arg>
+            <arg>-AfileComment="something different"</arg>
+        </compilerArgs>
+    </configuration>
+</plugin>
+```
+
+#### Gradle
+
+For Gradle, specify the options:
+
+```groovy
+compilerArgs.addAll(['-AprefixEnclosingClassNames=false', '-AfileComment="something different"'])
+```
+
+## Customize a single record
+
+To customize a single record, add `@RecordBuilder.Options` in addition to
+`@RecordBuilder`.
+
+E.g.
+
+```java
+@RecordBuilder.Options(withClassName = "Wither")
+@RecordBuilder
+public record MyRecord(String s){}
+```
+
+## Create a custom annotation
+
+Using `@RecordBuilder.Template` you can create your own RecordBuilder annotation
+that uses the set of options you want. E.g. to create a custom annotation that
+uses an alternate file comment and an alternate With classname:
+
+```java
+@RecordBuilder.Template(options = @RecordBuilder.Options(
+        fileComment = "MyCo license",
+        withClassName = "Wither"
+))
+@Retention(RetentionPolicy.SOURCE)
+@Target(ElementType.TYPE)
+@Inherited
+public @interface MyCoRecordBuilder {
+}
+```
+
+Now, you can use `@MyCoRecordBuilder` instead of `@RecordBuilder` and the record
+will be built with options as specified.

java16.sh

@@ -16,6 +16,6 @@
 #
 
 
-jenv local 16-ea
+jenv local 16
 javahome
 rm -fr .mvn

pom.xml

@@ -5,12 +5,13 @@
     <groupId>io.soabase.record-builder</groupId>
     <artifactId>record-builder</artifactId>
     <packaging>pom</packaging>
-    <version>1.19-SNAPSHOT</version>
+    <version>24</version>
 
     <modules>
         <module>record-builder-core</module>
         <module>record-builder-processor</module>
         <module>record-builder-test</module>
+        <module>record-builder-validator</module>
     </modules>
 
     <properties>
@@ -33,10 +34,16 @@
         <maven-shade-plugin-version>3.2.1</maven-shade-plugin-version>
         <maven-release-plugin-version>2.5.3</maven-release-plugin-version>
         <maven-surefire-plugin-version>3.0.0-M5</maven-surefire-plugin-version>
+        <maven-jar-plugin-version>3.2.0</maven-jar-plugin-version>
+
+        <license-file-path>src/etc/header.txt</license-file-path>
 
         <javapoet-version>1.12.1</javapoet-version>
         <junit-jupiter-version>5.5.2</junit-jupiter-version>
         <asm-version>7.2</asm-version>
+        <validation-api-version>2.0.1.Final</validation-api-version>
+        <hibernate-validator-version>6.0.20.Final</hibernate-validator-version>
+        <javax-el-version>3.0.1-b09</javax-el-version>
     </properties>
 
     <name>Record Builder</name>
@@ -73,7 +80,7 @@
         <url>https://github.com/randgalt/record-builder</url>
         <connection>scm:git:https://github.com/randgalt/record-builder.git</connection>
         <developerConnection>scm:git:git@github.com:randgalt/record-builder.git</developerConnection>
-        <tag>record-builder-1.16</tag>
+        <tag>record-builder-24</tag>
     </scm>
 
     <issueManagement>
@@ -108,11 +115,35 @@
                 <version>${project.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>io.soabase.record-builder</groupId>
+                <artifactId>record-builder-validator</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+
             <dependency>
                 <groupId>org.junit.jupiter</groupId>
                 <artifactId>junit-jupiter</artifactId>
                 <version>${junit-jupiter-version}</version>
             </dependency>
+
+            <dependency>
+                <groupId>javax.validation</groupId>
+                <artifactId>validation-api</artifactId>
+                <version>${validation-api-version}</version>
+            </dependency>
+
+            <dependency>
+                <groupId>org.hibernate.validator</groupId>
+                <artifactId>hibernate-validator</artifactId>
+                <version>${hibernate-validator-version}</version>
+            </dependency>
+
+            <dependency>
+                <groupId>org.glassfish</groupId>
+                <artifactId>javax.el</artifactId>
+                <version>${javax-el-version}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
 
@@ -159,7 +190,7 @@
                     <artifactId>maven-license-plugin</artifactId>
                     <version>${maven-license-plugin-version}</version>
                     <configuration>
-                        <header>src/etc/header.txt</header>
+                        <header>${license-file-path}</header>
                         <excludes>
                             <exclude>**/*.apt</exclude>
                             <exclude>**/*.md</exclude>
@@ -185,6 +216,8 @@
                             <exclude>**/jvm.config</exclude>
                             <exclude>**/.java-version</exclude>
                             <exclude>**/.travis.yml</exclude>
+                            <exclude>**/gradlew</exclude>
+                            <exclude>**/.github/**</exclude>
                         </excludes>
                         <strictCheck>true</strictCheck>
                     </configuration>
@@ -283,6 +316,18 @@
                         <argLine>${enable-preview}</argLine>
                     </configuration>
                 </plugin>
+
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-jar-plugin</artifactId>
+                    <version>${maven-jar-plugin-version}</version>
+                </plugin>
+
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-gpg-plugin</artifactId>
+                    <version>${maven-gpg-plugin-version}</version>
+                </plugin>
             </plugins>
         </pluginManagement>
 
@@ -326,7 +371,6 @@
                 <plugins>
                     <plugin>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>${maven-gpg-plugin-version}</version>
                         <configuration>
                             <passphrase>${gpg.passphrase}</passphrase>
                             <useAgent>true</useAgent>

record-builder-core/pom.xml

@@ -3,9 +3,29 @@
     <parent>
         <groupId>io.soabase.record-builder</groupId>
         <artifactId>record-builder</artifactId>
-        <version>1.19-SNAPSHOT</version>
+        <version>24</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>record-builder-core</artifactId>
+
+    <properties>
+        <license-file-path>${project.parent.basedir}/src/etc/header.txt</license-file-path>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>io.soabase.recordbuilder.core</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 </project>

record-builder-core/src/main/java/io/soabase/recordbuilder/core/RecordBuilder.java

@@ -15,16 +15,15 @@
  */
 package io.soabase.recordbuilder.core;
 
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
+import java.lang.annotation.*;
 
 @Retention(RetentionPolicy.SOURCE)
 @Target(ElementType.TYPE)
+@Inherited
 public @interface RecordBuilder {
     @Target({ElementType.TYPE, ElementType.PACKAGE})
     @Retention(RetentionPolicy.SOURCE)
+    @Inherited
     @interface Include {
         Class<?>[] value();
 
@@ -38,4 +37,111 @@ public @interface RecordBuilder {
          */
         String packagePattern() default "@";
     }
+
+    @Retention(RetentionPolicy.SOURCE)
+    @Target(ElementType.TYPE)
+    @Inherited
+    @interface Options {
+        /**
+         * The builder class name will be the name of the record (prefixed with any enclosing class) plus this suffix. E.g.
+         * if the record name is "Foo", the builder will be named "FooBuilder".
+         */
+        String suffix() default "Builder";
+
+        /**
+         * Used by {@code RecordInterface}. The generated record will have the same name as the annotated interface
+         * plus this suffix. E.g. if the interface name is "Foo", the record will be named "FooRecord".
+         */
+        String interfaceSuffix() default "Record";
+
+        /**
+         * The name to use for the copy builder
+         */
+        String copyMethodName() default "builder";
+
+        /**
+         * The name to use for the builder
+         */
+        String builderMethodName() default "builder";
+
+        /**
+         * The name to use for the build method
+         */
+        String buildMethodName() default "build";
+
+        /**
+         * The name to use for the method that returns the record components as a stream
+         */
+        String componentsMethodName() default "stream";
+
+        /**
+         * The name to use for the nested With class
+         */
+        String withClassName() default "With";
+
+        /**
+         * The prefix to use for the methods in the With class
+         */
+        String withClassMethodPrefix() default "with";
+
+        /**
+         * Return the comment to place at the top of generated files. Return null or an empty string for no comment.
+         */
+        String fileComment() default "Auto generated by io.soabase.recordbuilder.core.RecordBuilder: https://github.com/Randgalt/record-builder";
+
+        /**
+         * Return the file indent to use
+         */
+        String fileIndent() default "    ";
+
+        /**
+         * If the record is declared inside of another class, the outer class's name will
+         * be prefixed to the builder name if this returns true.
+         */
+        boolean prefixEnclosingClassNames() default true;
+
+        /**
+         * If true, any annotations (if applicable) on record components are copied
+         * to the builder methods
+         *
+         * @return true/false
+         */
+        boolean inheritComponentAnnotations() default true;
+
+        /**
+         * Set the default value of {@code Optional} record components to
+         * {@code Optional.empty()}
+         */
+        boolean emptyDefaultForOptional() default true;
+
+        /**
+         * Add not-null checks for record components annotated with any annotation named either "NotNull",
+         * "NoNull", or "NonNull" (see {@link #interpretNotNullsPattern()} for the actual regex matching pattern).
+         */
+        boolean interpretNotNulls() default false;
+
+        /**
+         * If {@link #interpretNotNulls()} is true, this is the regex pattern used to determine if an annotation name
+         * means "not null"
+         */
+        String interpretNotNullsPattern() default "(?i)((notnull)|(nonnull)|(nonull))";
+
+        /**
+         * <p>Pass built records through the Java Validation API if it's available in the classpath.</p>
+         *
+         * <p>IMPORTANT:
+         * if this option is enabled you must include the {@code record-builder-validator} dependency in addition
+         * to {@code record-builder-core}. {@code record-builder-validator} is implemented completely via reflection and
+         * does not require other dependencies. Alternatively, you can define your own class with the package {@code package io.soabase.recordbuilder.validator;}
+         * named {@code RecordBuilderValidator} which has a public static method: {@code public static <T> T validate(T o)}.</p>
+         */
+        boolean useValidationApi() default false;
+    }
+
+    @Retention(RetentionPolicy.SOURCE)
+    @Target(ElementType.ANNOTATION_TYPE)
+    @Inherited
+    @interface Template {
+        RecordBuilder.Options options();
+    }
 }

record-builder-core/src/main/java/io/soabase/recordbuilder/core/RecordBuilderMetaData.java

@@ -1,144 +0,0 @@
-/**
- * Copyright 2019 Jordan Zimmerman
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.soabase.recordbuilder.core;
-
-public interface RecordBuilderMetaData {
-    /**
-     * If you want to use your own meta data instance:
-     * <ul>
-     *     <li>create a class that implements {@code RecordBuilderMetaData}</li>
-     *     <li>When compiling, make sure that compiled class is in the processor path</li>
-     *     <li>Add a "metaDataClass" compiler option with the class name. E.g. {@code javac ... -AmetaDataClass=foo.bar.MyMetaData}</li>
-     * </ul>
-     */
-    String JAVAC_OPTION_NAME = "metaDataClass";
-
-    /**
-     * The default meta data instance
-     */
-    RecordBuilderMetaData DEFAULT = new RecordBuilderMetaData() {};
-
-    /**
-     * The builder class name will be the name of the record (prefixed with any enclosing class) plus this suffix. E.g.
-     * if the record name is "Foo", the builder will be named "FooBuilder".
-     *
-     * @return suffix
-     */
-    default String suffix() {
-        return "Builder";
-    }
-
-    /**
-     * Used by {@code RecordInterface}. The generated record will have the same name as the annotated interface
-     * plus this suffix. E.g. if the interface name is "Foo", the record will be named "FooRecord".
-     *
-     * @return suffix
-     */
-    default String interfaceSuffix() {
-        return "Record";
-    }
-
-    /**
-     * The name to use for the copy builder
-     *
-     * @return copy builder name
-     */
-    default String copyMethodName() {
-        return builderMethodName();
-    }
-
-    /**
-     * The name to use for the builder
-     *
-     * @return builder name
-     */
-    default String builderMethodName() {
-        return "builder";
-    }
-
-    /**
-     * The name to use for the build method
-     *
-     * @return build method
-     */
-    default String buildMethodName() {
-        return "build";
-    }
-
-    /**
-     * The name to use for the downcast method
-     *
-     * @return downcast method
-     */
-    default String downCastMethodName() {
-        return "_downcast";
-    }
-
-    /**
-     * The name to use for the method that returns the record components as a stream
-     *
-     * @return build method
-     */
-    default String componentsMethodName() {
-        return "stream";
-    }
-
-    /**
-     * The name to use for the nested With class
-     *
-     * @return with class name
-     */
-    default String withClassName() {
-        return "With";
-    }
-
-    /**
-     * The prefix to use for the methods in the With class
-     *
-     * @return prefix
-     */
-    default String withClassMethodPrefix() {
-        return "with";
-    }
-
-    /**
-     * Return the comment to place at the top of generated files. Return null or an empty string for no comment.
-     *
-     * @return comment or empty
-     */
-    default String fileComment() {
-        return "Auto generated by io.soabase.recordbuilder.core.RecordBuilder: https://github.com/Randgalt/record-builder";
-    }
-
-    /**
-     * Return the file indent to use
-     *
-     * @return file index
-     */
-    default String fileIndent() {
-        return "    ";
-    }
-
-    /**
-     * If the record is declared inside of another class, the outer class's name will
-     * be prefixed to the builder name if this returns true.
-     *
-     * @return true/false
-     */
-    default boolean prefixEnclosingClassNames() {
-        return true;
-    }
-}

record-builder-core/src/main/java/io/soabase/recordbuilder/core/RecordInterface.java

@@ -16,17 +16,20 @@
 package io.soabase.recordbuilder.core;
 
 import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 @Retention(RetentionPolicy.SOURCE)
 @Target(ElementType.TYPE)
+@Inherited
 public @interface RecordInterface {
     boolean addRecordBuilder() default true;
 
     @Target({ElementType.TYPE, ElementType.PACKAGE})
     @Retention(RetentionPolicy.SOURCE)
+    @Inherited
     @interface Include {
         Class<?>[] value();
 

record-builder-processor/pom.xml

@@ -3,12 +3,16 @@
     <parent>
         <groupId>io.soabase.record-builder</groupId>
         <artifactId>record-builder</artifactId>
-        <version>1.19-SNAPSHOT</version>
+        <version>24</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>record-builder-processor</artifactId>
 
+    <properties>
+        <license-file-path>${project.parent.basedir}/src/etc/header.txt</license-file-path>
+    </properties>
+
     <dependencies>
         <dependency>
             <groupId>com.squareup</groupId>

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/ElementUtils.java

@@ -19,11 +19,12 @@ import com.squareup.javapoet.ClassName;
 import com.squareup.javapoet.ParameterizedTypeName;
 import com.squareup.javapoet.TypeName;
 import com.squareup.javapoet.TypeVariableName;
-import io.soabase.recordbuilder.core.RecordBuilderMetaData;
+import io.soabase.recordbuilder.core.RecordBuilder;
 import javax.annotation.processing.ProcessingEnvironment;
 import javax.lang.model.element.AnnotationMirror;
 import javax.lang.model.element.AnnotationValue;
 import javax.lang.model.element.Element;
+import javax.lang.model.element.ElementKind;
 import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.element.RecordComponentElement;
 import javax.lang.model.element.TypeElement;
@@ -107,8 +108,8 @@ public class ElementUtils {
         return new ClassType(ParameterizedTypeName.get(builderClassName, typeNames), builderClassName.simpleName());
     }
 
-    public static ClassType getClassType(RecordComponentElement recordComponent) {
-        return new ClassType(TypeName.get(recordComponent.asType()), recordComponent.getSimpleName().toString());
+    public static RecordClassType getRecordClassType(RecordComponentElement recordComponent, List<? extends AnnotationMirror> accessorAnnotations, List<? extends AnnotationMirror> canonicalConstructorAnnotations) {
+        return new RecordClassType(TypeName.get(recordComponent.asType()), recordComponent.getSimpleName().toString(), accessorAnnotations, canonicalConstructorAnnotations);
     }
 
     public static String getWithMethodName(ClassType component, String prefix) {
@@ -119,12 +120,29 @@ public class ElementUtils {
         return prefix + Character.toUpperCase(name.charAt(0)) + name.substring(1);
     }
 
-    public static String getBuilderName(TypeElement element, RecordBuilderMetaData metaData, ClassType classType, String suffix) {
+    public static String getBuilderName(TypeElement element, RecordBuilder.Options metaData, ClassType classType, String suffix) {
         // generate the class name
         var baseName = classType.name() + suffix;
         return metaData.prefixEnclosingClassNames() ? (getBuilderNamePrefix(element.getEnclosingElement()) + baseName) : baseName;
     }
 
+    public static Optional<? extends Element> findCanonicalConstructor(TypeElement record) {
+        if ( record.getKind() != ElementKind.RECORD ) {
+            return Optional.empty();
+        }
+
+        // based on https://github.com/openjdk/jdk/pull/3556/files#diff-a6270f4b50989abe733607c69038b2036306d13f77276af005d023b7fc57f1a2R2368
+        var componentList = record.getRecordComponents().stream().map(e -> e.asType().toString()).collect(Collectors.toList());
+        return record.getEnclosedElements().stream()
+            .filter(element -> element.getKind() == ElementKind.CONSTRUCTOR)
+            .filter(element -> {
+                var parameters = ((ExecutableElement)element).getParameters();
+                var parametersList = parameters.stream().map(e -> e.asType().toString()).collect(Collectors.toList());
+                return componentList.equals(parametersList);
+            })
+            .findFirst();
+    }
+
     private static String getBuilderNamePrefix(Element element) {
         // prefix enclosing class names if nested in a class
         if (element instanceof TypeElement) {

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/InternalRecordBuilderProcessor.java

@@ -15,26 +15,13 @@
  */
 package io.soabase.recordbuilder.processor;
 
-import com.squareup.javapoet.ClassName;
-import com.squareup.javapoet.CodeBlock;
-import com.squareup.javapoet.FieldSpec;
-import com.squareup.javapoet.MethodSpec;
-import com.squareup.javapoet.ParameterSpec;
-import com.squareup.javapoet.ParameterizedTypeName;
-import com.squareup.javapoet.TypeName;
-import com.squareup.javapoet.TypeSpec;
-import com.squareup.javapoet.TypeVariableName;
-import io.soabase.recordbuilder.core.RecordBuilderMetaData;
+import com.squareup.javapoet.*;
+import io.soabase.recordbuilder.core.RecordBuilder;
 
-import javax.lang.model.element.Modifier;
-import javax.lang.model.element.TypeElement;
-
-import java.util.AbstractMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Optional;
+import javax.lang.model.element.*;
+import java.util.*;
 import java.util.function.Consumer;
+import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
@@ -43,27 +30,33 @@ import static io.soabase.recordbuilder.processor.ElementUtils.getBuilderName;
 import static io.soabase.recordbuilder.processor.ElementUtils.getWithMethodName;
 import static io.soabase.recordbuilder.processor.RecordBuilderProcessor.generatedRecordBuilderAnnotation;
 
-class InternalRecordBuilderProcessor
-{
-    private final RecordBuilderMetaData metaData;
+class InternalRecordBuilderProcessor {
+    private final RecordBuilder.Options metaData;
     private final ClassType recordClassType;
     private final String packageName;
     private final ClassType builderClassType;
     private final List<TypeVariableName> typeVariables;
-    private final List<ClassType> recordComponents;
+    private final List<RecordClassType> recordComponents;
     private final TypeSpec builderType;
     private final TypeSpec.Builder builder;
     private final String uniqueVarName;
+    private final Pattern notNullPattern;
 
-    InternalRecordBuilderProcessor(TypeElement record, RecordBuilderMetaData metaData, Optional<String> packageNameOpt)
-    {
-        this.metaData = metaData;
+    private static final TypeName optionalType = TypeName.get(Optional.class);
+    private static final TypeName optionalIntType = TypeName.get(OptionalInt.class);
+    private static final TypeName optionalLongType = TypeName.get(OptionalLong.class);
+    private static final TypeName optionalDoubleType = TypeName.get(OptionalDouble.class);
+    private static final TypeName validatorTypeName = ClassName.get("io.soabase.recordbuilder.validator", "RecordBuilderValidator");
+
+    InternalRecordBuilderProcessor(TypeElement record, RecordBuilder.Options metaData, Optional<String> packageNameOpt) {
+        this.metaData = getMetaData(record, metaData);
         recordClassType = ElementUtils.getClassType(record, record.getTypeParameters());
         packageName = packageNameOpt.orElseGet(() -> ElementUtils.getPackageName(record));
         builderClassType = ElementUtils.getClassType(packageName, getBuilderName(record, metaData, recordClassType, metaData.suffix()), record.getTypeParameters());
         typeVariables = record.getTypeParameters().stream().map(TypeVariableName::get).collect(Collectors.toList());
-        recordComponents = record.getRecordComponents().stream().map(ElementUtils::getClassType).collect(Collectors.toList());
+        recordComponents = buildRecordComponents(record);
         uniqueVarName = getUniqueVarName();
+        notNullPattern = Pattern.compile(metaData.interpretNotNullsPattern());
 
         builder = TypeSpec.classBuilder(builderClassType.name())
                 .addModifiers(Modifier.PUBLIC)
@@ -87,27 +80,40 @@ class InternalRecordBuilderProcessor
             add1SetterMethod(component);
             add1GetterMethod(component);
         });
-        addStaticDowncastMethod();
         builderType = builder.build();
     }
 
-    String packageName()
-    {
+    String packageName() {
         return packageName;
     }
 
-    ClassType builderClassType()
-    {
+    ClassType builderClassType() {
         return builderClassType;
     }
 
-    TypeSpec builderType()
-    {
+    TypeSpec builderType() {
         return builderType;
     }
 
-    private void addWithNestedClass()
-    {
+    private List<RecordClassType> buildRecordComponents(TypeElement record) {
+        var accessorAnnotations = record.getRecordComponents().stream().map(e -> e.getAccessor().getAnnotationMirrors()).collect(Collectors.toList());
+        var canonicalConstructorAnnotations = ElementUtils.findCanonicalConstructor(record).map(constructor -> ((ExecutableElement) constructor).getParameters().stream().map(Element::getAnnotationMirrors).collect(Collectors.toList())).orElse(List.of());
+        var recordComponents = record.getRecordComponents();
+        return IntStream.range(0, recordComponents.size())
+                .mapToObj(index -> {
+                    var thisAccessorAnnotations = (accessorAnnotations.size() > index) ? accessorAnnotations.get(index) : List.<AnnotationMirror>of();
+                    var thisCanonicalConstructorAnnotations = (canonicalConstructorAnnotations.size() > index) ? canonicalConstructorAnnotations.get(index) : List.<AnnotationMirror>of();
+                    return ElementUtils.getRecordClassType(recordComponents.get(index), thisAccessorAnnotations, thisCanonicalConstructorAnnotations);
+                })
+                .collect(Collectors.toList());
+    }
+
+    private RecordBuilder.Options getMetaData(TypeElement record, RecordBuilder.Options metaData) {
+        var recordSpecificMetaData = record.getAnnotation(RecordBuilder.Options.class);
+        return (recordSpecificMetaData != null) ? recordSpecificMetaData : metaData;
+    }
+
+    private void addWithNestedClass() {
         /*
             Adds a nested interface that adds withers similar to:
 
@@ -122,14 +128,14 @@ class InternalRecordBuilderProcessor
                 .addJavadoc("Add withers to {@code $L}\n", recordClassType.name())
                 .addModifiers(Modifier.PUBLIC)
                 .addTypeVariables(typeVariables);
+        recordComponents.forEach(component -> addWithGetterMethod(classBuilder, component));
         addWithBuilderMethod(classBuilder);
         addWithSuppliedBuilderMethod(classBuilder);
         IntStream.range(0, recordComponents.size()).forEach(index -> add1WithMethod(classBuilder, recordComponents.get(index), index));
         builder.addType(classBuilder.build());
     }
 
-    private void addWithSuppliedBuilderMethod(TypeSpec.Builder classBuilder)
-    {
+    private void addWithSuppliedBuilderMethod(TypeSpec.Builder classBuilder) {
         /*
             Adds a method that returns a pre-filled copy builder similar to:
 
@@ -156,19 +162,18 @@ class InternalRecordBuilderProcessor
         classBuilder.addMethod(methodSpec);
     }
 
-    private void addWithBuilderMethod(TypeSpec.Builder classBuilder)
-    {
+    private void addWithBuilderMethod(TypeSpec.Builder classBuilder) {
         /*
             Adds a method that returns a pre-filled copy builder similar to:
 
             default MyRecordBuilder with() {
-                MyRecord r = _downcast(this);
                 return MyRecordBuilder.builder(r);
             }
          */
         var codeBlockBuilder = CodeBlock.builder()
-                .add("$T $L = $L(this);\n", recordClassType.typeName(), uniqueVarName, metaData.downCastMethodName())
-                .add("return $L.$L($L);", builderClassType.name(), metaData.copyMethodName(), uniqueVarName);
+                .add("return new $L(", builderClassType.name());
+        addComponentCallsAsArguments(-1, codeBlockBuilder);
+        codeBlockBuilder.add(");");
         var methodSpec = MethodSpec.methodBuilder(metaData.withClassMethodPrefix())
                 .addAnnotation(generatedRecordBuilderAnnotation)
                 .addJavadoc("Return a new record builder using the current values")
@@ -179,35 +184,55 @@ class InternalRecordBuilderProcessor
         classBuilder.addMethod(methodSpec);
     }
 
-    private String getUniqueVarName()
-    {
+    private String getUniqueVarName() {
         return getUniqueVarName("");
     }
 
-    private String getUniqueVarName(String prefix)
-    {
+    private String getUniqueVarName(String prefix) {
         var name = prefix + "r";
         var alreadyExists = recordComponents.stream()
-            .map(ClassType::name)
-            .anyMatch(n -> n.equals(name));
+                .map(ClassType::name)
+                .anyMatch(n -> n.equals(name));
         return alreadyExists ? getUniqueVarName(prefix + "_") : name;
     }
 
-    private void add1WithMethod(TypeSpec.Builder classBuilder, ClassType component, int index)
-    {
+    private void add1WithMethod(TypeSpec.Builder classBuilder, RecordClassType component, int index) {
         /*
             Adds a with method for the component similar to:
 
             default MyRecord withName(String name) {
-                MyRecord r = _downcast(this);
                 return new MyRecord(name, r.age());
             }
          */
         var codeBlockBuilder = CodeBlock.builder();
-        if (recordComponents.size() > 1) {
-            codeBlockBuilder.add("$T $L = $L(this);\n", recordClassType.typeName(), uniqueVarName, metaData.downCastMethodName());
+        addNullCheckCodeBlock(codeBlockBuilder, index);
+        codeBlockBuilder.add("$[return ");
+        if (metaData.useValidationApi()) {
+            codeBlockBuilder.add("$T.validate(", validatorTypeName);
         }
-        codeBlockBuilder.add("return new $T(", recordClassType.typeName());
+        codeBlockBuilder.add("new $T(", recordClassType.typeName());
+        addComponentCallsAsArguments(index, codeBlockBuilder);
+        codeBlockBuilder.add(")");
+        if (metaData.useValidationApi()) {
+            codeBlockBuilder.add(")");
+        }
+        codeBlockBuilder.add(";$]");
+
+        var methodName = getWithMethodName(component, metaData.withClassMethodPrefix());
+        var parameterSpecBuilder = ParameterSpec.builder(component.typeName(), component.name());
+        component.getCanonicalConstructorAnnotations().forEach(annotationMirror -> parameterSpecBuilder.addAnnotation(AnnotationSpec.get(annotationMirror)));
+        var methodSpec = MethodSpec.methodBuilder(methodName)
+                .addAnnotation(generatedRecordBuilderAnnotation)
+                .addJavadoc("Return a new instance of {@code $L} with a new value for {@code $L}\n", recordClassType.name(), component.name())
+                .addModifiers(Modifier.PUBLIC, Modifier.DEFAULT)
+                .addParameter(parameterSpecBuilder.build())
+                .addCode(codeBlockBuilder.build())
+                .returns(recordClassType.typeName())
+                .build();
+        classBuilder.addMethod(methodSpec);
+    }
+
+    private void addComponentCallsAsArguments(int index, CodeBlock.Builder codeBlockBuilder) {
         IntStream.range(0, recordComponents.size()).forEach(parameterIndex -> {
             if (parameterIndex > 0) {
                 codeBlockBuilder.add(", ");
@@ -215,28 +240,13 @@ class InternalRecordBuilderProcessor
             ClassType parameterComponent = recordComponents.get(parameterIndex);
             if (parameterIndex == index) {
                 codeBlockBuilder.add(parameterComponent.name());
-            }
-            else {
-                codeBlockBuilder.add("$L.$L()", uniqueVarName, parameterComponent.name());
+            } else {
+                codeBlockBuilder.add("$L()", parameterComponent.name());
             }
         });
-        codeBlockBuilder.add(");");
-
-        var methodName = getWithMethodName(component, metaData.withClassMethodPrefix());
-        var parameterSpec = ParameterSpec.builder(component.typeName(), component.name()).build();
-        var methodSpec = MethodSpec.methodBuilder(methodName)
-                .addAnnotation(generatedRecordBuilderAnnotation)
-                .addJavadoc("Return a new instance of {@code $L} with a new value for {@code $L}\n", recordClassType.name(), component.name())
-                .addModifiers(Modifier.PUBLIC, Modifier.DEFAULT)
-                .addParameter(parameterSpec)
-                .addCode(codeBlockBuilder.build())
-                .returns(recordClassType.typeName())
-                .build();
-        classBuilder.addMethod(methodSpec);
     }
 
-    private void addDefaultConstructor()
-    {
+    private void addDefaultConstructor() {
         /*
             Adds a default constructor similar to:
 
@@ -250,8 +260,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(constructor);
     }
 
-    private void addStaticBuilder()
-    {
+    private void addStaticBuilder() {
         /*
             Adds an static builder similar to:
 
@@ -266,13 +275,38 @@ class InternalRecordBuilderProcessor
                 .addModifiers(Modifier.PUBLIC, Modifier.STATIC)
                 .addAnnotation(generatedRecordBuilderAnnotation)
                 .returns(recordClassType.typeName())
-                .addStatement(codeBlock);
-        recordComponents.forEach(component -> builder.addParameter(component.typeName(), component.name()));
+                .addCode(codeBlock);
+        recordComponents.forEach(component -> {
+            var parameterSpecBuilder = ParameterSpec.builder(component.typeName(), component.name());
+            component.getCanonicalConstructorAnnotations().forEach(annotationMirror -> parameterSpecBuilder.addAnnotation(AnnotationSpec.get(annotationMirror)));
+            builder.addParameter(parameterSpecBuilder.build());
+        });
         this.builder.addMethod(builder.build());
     }
 
-    private void addAllArgsConstructor()
-    {
+    private void addNullCheckCodeBlock(CodeBlock.Builder builder) {
+        if (metaData.interpretNotNulls()) {
+            for (int i = 0; i < recordComponents.size(); ++i) {
+                addNullCheckCodeBlock(builder, i);
+            }
+        }
+    }
+
+    private void addNullCheckCodeBlock(CodeBlock.Builder builder, int index) {
+        if (metaData.interpretNotNulls()) {
+            var component = recordComponents.get(index);
+            if (!component.typeName().isPrimitive() && isNullAnnotated(component)) {
+                builder.addStatement("$T.requireNonNull($L, $S)", Objects.class, component.name(), component.name() + " is required");
+            }
+        }
+    }
+
+    private boolean isNullAnnotated(RecordClassType component) {
+        return component.getCanonicalConstructorAnnotations().stream()
+                .anyMatch(annotation -> notNullPattern.matcher(annotation.getAnnotationType().asElement().getSimpleName().toString()).matches());
+    }
+
+    private void addAllArgsConstructor() {
         /*
             Adds an all-args constructor similar to:
 
@@ -293,8 +327,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(constructorBuilder.build());
     }
 
-    private void addToStringMethod()
-    {
+    private void addToStringMethod() {
         /*
             add a toString() method similar to:
 
@@ -323,8 +356,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 
-    private void addHashCodeMethod()
-    {
+    private void addHashCodeMethod() {
         /*
             add a hashCode() method similar to:
 
@@ -352,8 +384,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 
-    private void addEqualsMethod()
-    {
+    private void addEqualsMethod() {
         /*
             add an equals() method similar to:
 
@@ -371,8 +402,7 @@ class InternalRecordBuilderProcessor
             String name = recordComponent.name();
             if (recordComponent.typeName().isPrimitive()) {
                 codeBuilder.add("\n&& ($L == $L.$L)", name, uniqueVarName, name);
-            }
-            else {
+            } else {
                 codeBuilder.add("\n&& $T.equals($L, $L.$L)", Objects.class, name, uniqueVarName, name);
             }
         });
@@ -389,8 +419,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 
-    private void addBuildMethod()
-    {
+    private void addBuildMethod() {
         /*
             Adds the build method that generates the record similar to:
 
@@ -404,7 +433,7 @@ class InternalRecordBuilderProcessor
                 .addModifiers(Modifier.PUBLIC)
                 .addAnnotation(generatedRecordBuilderAnnotation)
                 .returns(recordClassType.typeName())
-                .addStatement(codeBlock)
+                .addCode(codeBlock)
                 .build();
         builder.addMethod(methodSpec);
     }
@@ -414,7 +443,13 @@ class InternalRecordBuilderProcessor
             Builds the code block for allocating the record from its parts
         */
 
-        var codeBuilder = CodeBlock.builder().add("return new $T(", recordClassType.typeName());
+        var codeBuilder = CodeBlock.builder();
+        addNullCheckCodeBlock(codeBuilder);
+        codeBuilder.add("$[return ");
+        if (metaData.useValidationApi()) {
+            codeBuilder.add("$T.validate(", validatorTypeName);
+        }
+        codeBuilder.add("new $T(", recordClassType.typeName());
         IntStream.range(0, recordComponents.size()).forEach(index -> {
             if (index > 0) {
                 codeBuilder.add(", ");
@@ -422,11 +457,14 @@ class InternalRecordBuilderProcessor
             codeBuilder.add("$L", recordComponents.get(index).name());
         });
         codeBuilder.add(")");
+        if (metaData.useValidationApi()) {
+            codeBuilder.add(")");
+        }
+        codeBuilder.add(";$]");
         return codeBuilder.build();
     }
 
-    private void addStaticCopyBuilderMethod()
-    {
+    private void addStaticCopyBuilderMethod() {
         /*
             Adds a copy builder method that pre-fills the builder with existing values similar to:
 
@@ -455,8 +493,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 
-    private void addStaticDefaultBuilderMethod()
-    {
+    private void addStaticDefaultBuilderMethod() {
         /*
             Adds a the default builder method similar to:
 
@@ -475,8 +512,7 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 
-    private void addStaticComponentsMethod()
-    {
+    private void addStaticComponentsMethod() {
         /*
             Adds a static method that converts a record instance into a stream of its component parts
 
@@ -510,51 +546,55 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 
-    private void addStaticDowncastMethod()
-    {
-        /*
-            Adds a method that downcasts to the record type
-
-            private static MyRecord _downcast(Object this) {
-                return (MyRecord)this;
-            }
-         */
-        var codeBlockBuilder = CodeBlock.builder()
-            .add("try {\n")
-            .indent()
-            .add("return ($T)obj;\n", recordClassType.typeName())
-            .unindent()
-            .add("}\n")
-            .add("catch (ClassCastException dummy) {\n")
-            .indent()
-            .add("throw new RuntimeException($S);\n", builderClassType.name() + "." + metaData.withClassName() + " can only be implemented by " + recordClassType.name())
-            .unindent()
-            .add("}");
-        var methodSpec = MethodSpec.methodBuilder(metaData.downCastMethodName())
-            .addAnnotation(generatedRecordBuilderAnnotation)
-            .addJavadoc("Downcast to {@code $L}\n", recordClassType.name())
-            .addModifiers(Modifier.PRIVATE, Modifier.STATIC)
-            .addParameter(Object.class, "obj")
-            .addTypeVariables(typeVariables)
-            .returns(recordClassType.typeName())
-            .addCode(codeBlockBuilder.build())
-            .build();
-        builder.addMethod(methodSpec);
-    }
-
-    private void add1Field(ClassType component)
-    {
+    private void add1Field(ClassType component) {
         /*
             For a single record component, add a field similar to:
 
             private T p;
          */
-        var fieldSpec = FieldSpec.builder(component.typeName(), component.name(), Modifier.PRIVATE).build();
-        builder.addField(fieldSpec);
+        var fieldSpecBuilder = FieldSpec.builder(component.typeName(), component.name(), Modifier.PRIVATE);
+        if (metaData.emptyDefaultForOptional()) {
+            TypeName thisOptionalType = null;
+            if (isOptional(component)) {
+                thisOptionalType = optionalType;
+            } else if (component.typeName().equals(optionalIntType)) {
+                thisOptionalType = optionalIntType;
+            } else if (component.typeName().equals(optionalLongType)) {
+                thisOptionalType = optionalLongType;
+            } else if (component.typeName().equals(optionalDoubleType)) {
+                thisOptionalType = optionalDoubleType;
+            }
+            if (thisOptionalType != null) {
+                var codeBlock = CodeBlock.builder().add("$T.empty()", thisOptionalType).build();
+                fieldSpecBuilder.initializer(codeBlock);
+            }
+        }
+        builder.addField(fieldSpecBuilder.build());
     }
 
-    private void add1GetterMethod(ClassType component)
-    {
+    private boolean isOptional(ClassType component) {
+        if (component.typeName().equals(optionalType)) {
+            return true;
+        }
+        return (component.typeName() instanceof ParameterizedTypeName parameterizedTypeName) && parameterizedTypeName.rawType.equals(optionalType);
+    }
+
+    private void addWithGetterMethod(TypeSpec.Builder classBuilder, RecordClassType component) {
+        /*
+            For a single record component, add a getter similar to:
+
+            T p();
+         */
+        var methodSpecBuilder = MethodSpec.methodBuilder(component.name())
+                .addJavadoc("Return the current value for the {@code $L} record component in the builder\n", component.name())
+                .addModifiers(Modifier.ABSTRACT, Modifier.PUBLIC)
+                .addAnnotation(generatedRecordBuilderAnnotation)
+                .returns(component.typeName());
+        component.getAccessorAnnotations().forEach(annotationMirror -> methodSpecBuilder.addAnnotation(AnnotationSpec.get(annotationMirror)));
+        classBuilder.addMethod(methodSpecBuilder.build());
+    }
+
+    private void add1GetterMethod(RecordClassType component) {
         /*
             For a single record component, add a getter similar to:
 
@@ -562,18 +602,17 @@ class InternalRecordBuilderProcessor
                 return p;
             }
          */
-        var methodSpec = MethodSpec.methodBuilder(component.name())
+        var methodSpecBuilder = MethodSpec.methodBuilder(component.name())
                 .addJavadoc("Return the current value for the {@code $L} record component in the builder\n", component.name())
                 .addModifiers(Modifier.PUBLIC)
                 .addAnnotation(generatedRecordBuilderAnnotation)
                 .returns(component.typeName())
-                .addStatement("return $L", component.name())
-                .build();
-        builder.addMethod(methodSpec);
+                .addStatement("return $L", component.name());
+        component.getAccessorAnnotations().forEach(annotationMirror -> methodSpecBuilder.addAnnotation(AnnotationSpec.get(annotationMirror)));
+        builder.addMethod(methodSpecBuilder.build());
     }
 
-    private void add1SetterMethod(ClassType component)
-    {
+    private void add1SetterMethod(RecordClassType component) {
         /*
             For a single record component, add a setter similar to:
 
@@ -582,12 +621,14 @@ class InternalRecordBuilderProcessor
                 return this;
             }
          */
-        var parameterSpec = ParameterSpec.builder(component.typeName(), component.name()).build();
+        var parameterSpecBuilder = ParameterSpec.builder(component.typeName(), component.name());
+        component.getCanonicalConstructorAnnotations().forEach(annotationMirror -> parameterSpecBuilder.addAnnotation(AnnotationSpec.get(annotationMirror)));
+
         var methodSpec = MethodSpec.methodBuilder(component.name())
                 .addJavadoc("Set a new value for the {@code $L} record component in the builder\n", component.name())
                 .addModifiers(Modifier.PUBLIC)
                 .addAnnotation(generatedRecordBuilderAnnotation)
-                .addParameter(parameterSpec)
+                .addParameter(parameterSpecBuilder.build())
                 .returns(builderClassType.typeName())
                 .addStatement("this.$L = $L", component.name(), component.name())
                 .addStatement("return this")
@@ -595,3 +636,4 @@ class InternalRecordBuilderProcessor
         builder.addMethod(methodSpec);
     }
 }
+

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/InternalRecordInterfaceProcessor.java

@@ -22,7 +22,6 @@ import com.squareup.javapoet.TypeSpec;
 import com.squareup.javapoet.TypeVariableName;
 import io.soabase.recordbuilder.core.IgnoreDefaultMethod;
 import io.soabase.recordbuilder.core.RecordBuilder;
-import io.soabase.recordbuilder.core.RecordBuilderMetaData;
 import javax.annotation.processing.ProcessingEnvironment;
 import javax.lang.model.element.ElementKind;
 import javax.lang.model.element.ExecutableElement;
@@ -59,7 +58,7 @@ class InternalRecordInterfaceProcessor {
 
     private record Component(ExecutableElement element, Optional<String> alternateName){}
 
-    InternalRecordInterfaceProcessor(ProcessingEnvironment processingEnv, TypeElement iface, boolean addRecordBuilder, RecordBuilderMetaData metaData, Optional<String> packageNameOpt) {
+    InternalRecordInterfaceProcessor(ProcessingEnvironment processingEnv, TypeElement iface, boolean addRecordBuilder, RecordBuilder.Options metaData, Optional<String> packageNameOpt) {
         this.processingEnv = processingEnv;
         packageName = packageNameOpt.orElseGet(() -> ElementUtils.getPackageName(iface));
         recordComponents = getRecordComponents(iface);

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/OptionBasedRecordBuilderMetaData.java

@@ -1,175 +0,0 @@
-/**
- * Copyright 2019 Jordan Zimmerman
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.soabase.recordbuilder.processor;
-
-import io.soabase.recordbuilder.core.RecordBuilderMetaData;
-
-import java.util.Map;
-
-public class OptionBasedRecordBuilderMetaData implements RecordBuilderMetaData {
-    /**
-     * @see #suffix()
-     */
-    public static final String OPTION_SUFFIX = "suffix";
-
-    /**
-     * @see #interfaceSuffix()
-     */
-    public static final String OPTION_INTERFACE_SUFFIX = "interfaceSuffix";
-
-    /**
-     * @see #copyMethodName()
-     */
-    public static final String OPTION_COPY_METHOD_NAME = "copyMethodName";
-
-    /**
-     * @see #builderMethodName()
-     */
-    public static final String OPTION_BUILDER_METHOD_NAME = "builderMethodName";
-
-    /**
-     * @see #buildMethodName()
-     */
-    public static final String OPTION_BUILD_METHOD_NAME = "buildMethodName";
-
-    /**
-     * @see #downCastMethodName()
-     */
-    public static final String OPTION_DOWN_CAST_METHOD_NAME = "downCastMethodName";
-
-    /**
-     * @see #componentsMethodName()
-     */
-    public static final String OPTION_COMPONENTS_METHOD_NAME = "componentsMethodName";
-
-    /**
-     * @see #fileComment()
-     */
-    public static final String OPTION_FILE_COMMENT = "fileComment";
-
-    /**
-     * @see #fileIndent()
-     */
-    public static final String OPTION_FILE_INDENT = "fileIndent";
-
-    /**
-     * @see #prefixEnclosingClassNames()
-     */
-    public static final String OPTION_PREFIX_ENCLOSING_CLASS_NAMES = "prefixEnclosingClassNames";
-
-    /**
-     * @see #withClassName()
-     */
-    public static final String OPTION_WITH_CLASS_NAME = "withClassName";
-
-    /**
-     * @see #withClassMethodPrefix()
-     */
-    public static final String OPTION_WITH_CLASS_METHOD_PREFIX = "withClassMethodPrefix";
-
-    private final String suffix;
-    private final String interfaceSuffix;
-    private final String copyMethodName;
-    private final String builderMethodName;
-    private final String buildMethodName;
-    private final String downCastMethodName;
-    private final String componentsMethodName;
-    private final String withClassName;
-    private final String withClassMethodPrefix;
-    private final String fileComment;
-    private final String fileIndent;
-    private final boolean prefixEnclosingClassNames;
-
-    public OptionBasedRecordBuilderMetaData(Map<String, String> options) {
-        suffix = options.getOrDefault(OPTION_SUFFIX, DEFAULT.suffix());
-        interfaceSuffix = options.getOrDefault(OPTION_INTERFACE_SUFFIX, DEFAULT.interfaceSuffix());
-        builderMethodName = options.getOrDefault(OPTION_BUILDER_METHOD_NAME, DEFAULT.builderMethodName());
-        copyMethodName = options.getOrDefault(OPTION_COPY_METHOD_NAME, DEFAULT.copyMethodName());
-        buildMethodName = options.getOrDefault(OPTION_BUILD_METHOD_NAME, DEFAULT.buildMethodName());
-        downCastMethodName = options.getOrDefault(OPTION_DOWN_CAST_METHOD_NAME, DEFAULT.downCastMethodName());
-        componentsMethodName = options.getOrDefault(OPTION_COMPONENTS_METHOD_NAME, DEFAULT.componentsMethodName());
-        withClassName = options.getOrDefault(OPTION_WITH_CLASS_NAME, DEFAULT.withClassName());
-        withClassMethodPrefix = options.getOrDefault(OPTION_WITH_CLASS_METHOD_PREFIX, DEFAULT.withClassMethodPrefix());
-        fileComment = options.getOrDefault(OPTION_FILE_COMMENT, DEFAULT.fileComment());
-        fileIndent = options.getOrDefault(OPTION_FILE_INDENT, DEFAULT.fileIndent());
-        String prefixenclosingclassnamesopt = options.getOrDefault(OPTION_PREFIX_ENCLOSING_CLASS_NAMES, String.valueOf(DEFAULT.prefixEnclosingClassNames()));
-        if (prefixenclosingclassnamesopt == null) {
-            prefixEnclosingClassNames = true;
-        } else {
-            prefixEnclosingClassNames = Boolean.parseBoolean(prefixenclosingclassnamesopt);
-        }
-    }
-
-    @Override
-    public String suffix() {
-        return suffix;
-    }
-
-    @Override
-    public String copyMethodName() {
-        return copyMethodName;
-    }
-
-    @Override
-    public String builderMethodName() {
-        return builderMethodName;
-    }
-
-    @Override
-    public String buildMethodName() {
-        return buildMethodName;
-    }
-
-    @Override
-    public String downCastMethodName() {
-        return downCastMethodName;
-    }
-
-    @Override
-    public String componentsMethodName() {
-        return componentsMethodName;
-    }
-
-    @Override
-    public String withClassName() {
-        return withClassName;
-    }
-
-    @Override
-    public String withClassMethodPrefix() {
-        return withClassMethodPrefix;
-    }
-
-    @Override
-    public String fileComment() {
-        return fileComment;
-    }
-
-    @Override
-    public String fileIndent() {
-        return fileIndent;
-    }
-
-    @Override
-    public boolean prefixEnclosingClassNames() {
-        return prefixEnclosingClassNames;
-    }
-
-    @Override
-    public String interfaceSuffix() {
-        return interfaceSuffix;
-    }
-}

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/RecordBuilderMetaDataLoader.java

@@ -1,53 +0,0 @@
-/**
- * Copyright 2019 Jordan Zimmerman
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.soabase.recordbuilder.processor;
-
-import io.soabase.recordbuilder.core.RecordBuilderMetaData;
-
-import java.lang.reflect.InvocationTargetException;
-import java.util.Map;
-import java.util.function.Consumer;
-
-import javax.annotation.processing.ProcessingEnvironment;
-
-class RecordBuilderMetaDataLoader {
-    private final RecordBuilderMetaData metaData;
-
-    RecordBuilderMetaDataLoader(ProcessingEnvironment processingEnv, Consumer<String> logger) {
-        Map<String, String> options = processingEnv.getOptions();
-        String metaDataClassName = options.get(RecordBuilderMetaData.JAVAC_OPTION_NAME);
-        if ((metaDataClassName != null) && !metaDataClassName.isEmpty()) {
-            RecordBuilderMetaData loadedMetaData = null;
-            try {
-                Class<?> clazz = Class.forName(metaDataClassName);
-                loadedMetaData = (RecordBuilderMetaData) clazz.getDeclaredConstructor().newInstance();
-                logger.accept("Found meta data: " + clazz);
-            } catch (InvocationTargetException e) {
-                // log the thrown exception instead of the invocation target exception
-                logger.accept("Could not load meta data: " + metaDataClassName + " - " + e.getCause());
-            } catch (Exception e) {
-                logger.accept("Could not load meta data: " + metaDataClassName + " - " + e);
-            }
-            metaData = (loadedMetaData != null) ? loadedMetaData : RecordBuilderMetaData.DEFAULT;
-        } else {
-            metaData = new OptionBasedRecordBuilderMetaData(options);
-        }
-    }
-
-    RecordBuilderMetaData getMetaData() {
-        return metaData;
-    }
-}

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/RecordBuilderOptions.java

@@ -0,0 +1,65 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.processor;
+
+import io.soabase.recordbuilder.core.RecordBuilder;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+import java.util.HashMap;
+import java.util.Map;
+
+class RecordBuilderOptions {
+    private static final Map<String, Object> defaultValues = buildDefaultValues();
+
+    static RecordBuilder.Options build(Map<String, String> options) {
+        return (RecordBuilder.Options)Proxy.newProxyInstance(RecordBuilderOptions.class.getClassLoader(), new Class[]{RecordBuilder.Options.class}, (proxy, method, args) -> {
+            var name = method.getName();
+            var defaultValue = defaultValues.get(name);
+            var option = options.get(name);
+            if (option != null) {
+                if (defaultValue instanceof String) {
+                    return option;
+                }
+                if (defaultValue instanceof Boolean) {
+                    return Boolean.parseBoolean(option);
+                }
+                if (defaultValue instanceof Integer) {
+                    return Integer.parseInt(option);
+                }
+                if (defaultValue instanceof Long) {
+                    return Long.parseLong(option);
+                }
+                if (defaultValue instanceof Double) {
+                    return Double.parseDouble(option);
+                }
+                throw new IllegalArgumentException("Unhandled option type: " + defaultValue.getClass());
+            }
+            return defaultValue;
+        });
+    }
+
+    private static Map<String, Object> buildDefaultValues() {
+        var workMap = new HashMap<String, Object>();
+        for ( Method method : RecordBuilder.Options.class.getDeclaredMethods()) {
+            workMap.put(method.getName(), method.getDefaultValue());
+        }
+        workMap.put("toString", "Generated RecordBuilder.Options");
+        return Map.copyOf(workMap);
+    }
+
+    private RecordBuilderOptions() {
+    }
+}

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/RecordBuilderProcessor.java

@@ -19,8 +19,8 @@ import com.squareup.javapoet.AnnotationSpec;
 import com.squareup.javapoet.JavaFile;
 import com.squareup.javapoet.TypeSpec;
 import io.soabase.recordbuilder.core.RecordBuilder;
-import io.soabase.recordbuilder.core.RecordBuilderMetaData;
 import io.soabase.recordbuilder.core.RecordInterface;
+
 import javax.annotation.processing.AbstractProcessor;
 import javax.annotation.processing.Filer;
 import javax.annotation.processing.Generated;
@@ -32,13 +32,16 @@ import javax.lang.model.element.TypeElement;
 import javax.lang.model.type.TypeMirror;
 import javax.tools.Diagnostic;
 import javax.tools.JavaFileObject;
+
 import java.io.IOException;
 import java.io.Writer;
 import java.util.Optional;
 import java.util.Set;
 import java.util.function.Function;
 
-public class RecordBuilderProcessor extends AbstractProcessor {
+public class RecordBuilderProcessor
+        extends AbstractProcessor
+{
     private static final String RECORD_BUILDER = RecordBuilder.class.getName();
     private static final String RECORD_BUILDER_INCLUDE = RecordBuilder.Include.class.getName().replace('$', '.');
     private static final String RECORD_INTERFACE = RecordInterface.class.getName();
@@ -48,18 +51,21 @@ public class RecordBuilderProcessor extends AbstractProcessor {
     static final AnnotationSpec generatedRecordInterfaceAnnotation = AnnotationSpec.builder(Generated.class).addMember("value", "$S", RecordInterface.class.getName()).build();
 
     @Override
-    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
+    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv)
+    {
         annotations.forEach(annotation -> roundEnv.getElementsAnnotatedWith(annotation).forEach(element -> process(annotation, element)));
-        return true;
+        return false;
     }
 
     @Override
-    public Set<String> getSupportedAnnotationTypes() {
-        return Set.of(RECORD_BUILDER, RECORD_BUILDER_INCLUDE, RECORD_INTERFACE, RECORD_INTERFACE_INCLUDE);
+    public Set<String> getSupportedAnnotationTypes()
+    {
+        return Set.of("*");
     }
 
     @Override
-    public SourceVersion getSupportedSourceVersion() {
+    public SourceVersion getSupportedSourceVersion()
+    {
         // we don't directly return RELEASE_14 as that may 
         // not exist in prior releases
         // if we're running on an older release, returning latest()
@@ -67,66 +73,57 @@ public class RecordBuilderProcessor extends AbstractProcessor {
         return SourceVersion.latest();
     }
 
-    private void process(TypeElement annotation, Element element) {
-        var metaData = new RecordBuilderMetaDataLoader(processingEnv, s -> processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, s)).getMetaData();
-
+    private void process(TypeElement annotation, Element element)
+    {
         String annotationClass = annotation.getQualifiedName().toString();
-        if ( annotationClass.equals(RECORD_BUILDER) )
-        {
-            processRecordBuilder((TypeElement)element, metaData, Optional.empty());
+        if (annotationClass.equals(RECORD_BUILDER)) {
+            var metaData = RecordBuilderOptions.build(processingEnv.getOptions());
+            processRecordBuilder((TypeElement) element, metaData, Optional.empty());
         }
-        else if ( annotationClass.equals(RECORD_INTERFACE) )
-        {
-            processRecordInterface((TypeElement)element, element.getAnnotation(RecordInterface.class).addRecordBuilder(), metaData, Optional.empty());
+        else if (annotationClass.equals(RECORD_INTERFACE)) {
+            var metaData = RecordBuilderOptions.build(processingEnv.getOptions());
+            processRecordInterface((TypeElement) element, element.getAnnotation(RecordInterface.class).addRecordBuilder(), metaData, Optional.empty());
         }
-        else if ( annotationClass.equals(RECORD_BUILDER_INCLUDE) || annotationClass.equals(RECORD_INTERFACE_INCLUDE) )
-        {
+        else if (annotationClass.equals(RECORD_BUILDER_INCLUDE) || annotationClass.equals(RECORD_INTERFACE_INCLUDE)) {
+            var metaData = RecordBuilderOptions.build(processingEnv.getOptions());
             processIncludes(element, metaData, annotationClass);
-        }
-        else
-        {
-            throw new RuntimeException("Unknown annotation: " + annotation);
+        } else {
+            var recordBuilderTemplate = annotation.getAnnotation(RecordBuilder.Template.class);
+            if (recordBuilderTemplate != null) {
+                processRecordBuilder((TypeElement) element, recordBuilderTemplate.options(), Optional.empty());
+            }
         }
     }
 
-    private void processIncludes(Element element, RecordBuilderMetaData metaData, String annotationClass) {
+    private void processIncludes(Element element, RecordBuilder.Options metaData, String annotationClass)
+    {
         var annotationMirrorOpt = ElementUtils.findAnnotationMirror(processingEnv, element, annotationClass);
-        if ( annotationMirrorOpt.isEmpty() )
-        {
+        if (annotationMirrorOpt.isEmpty()) {
             processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Could not get annotation mirror for: " + annotationClass, element);
         }
-        else
-        {
+        else {
             var values = processingEnv.getElementUtils().getElementValuesWithDefaults(annotationMirrorOpt.get());
             var classes = ElementUtils.getAnnotationValue(values, "value");
-            if ( classes.isEmpty() )
-            {
+            if (classes.isEmpty()) {
                 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Could not get annotation value for: " + annotationClass, element);
             }
-            else
-            {
+            else {
                 var packagePattern = ElementUtils.getStringAttribute(ElementUtils.getAnnotationValue(values, "packagePattern").orElse(null), "*");
                 var classesMirrors = ElementUtils.getClassesAttribute(classes.get());
-                for ( TypeMirror mirror : classesMirrors )
-                {
-                    TypeElement typeElement = (TypeElement)processingEnv.getTypeUtils().asElement(mirror);
-                    if ( typeElement == null )
-                    {
+                for (TypeMirror mirror : classesMirrors) {
+                    TypeElement typeElement = (TypeElement) processingEnv.getTypeUtils().asElement(mirror);
+                    if (typeElement == null) {
                         processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Could not get element for: " + mirror, element);
                     }
-                    else
-                    {
+                    else {
                         var packageName = buildPackageName(packagePattern, element, typeElement);
-                        if (packageName != null)
-                        {
-                            if ( annotationClass.equals(RECORD_INTERFACE_INCLUDE) )
-                            {
+                        if (packageName != null) {
+                            if (annotationClass.equals(RECORD_INTERFACE_INCLUDE)) {
                                 var addRecordBuilderOpt = ElementUtils.getAnnotationValue(values, "addRecordBuilder");
                                 var addRecordBuilder = addRecordBuilderOpt.map(ElementUtils::getBooleanAttribute).orElse(true);
                                 processRecordInterface(typeElement, addRecordBuilder, metaData, Optional.of(packageName));
                             }
-                            else
-                            {
+                            else {
                                 processRecordBuilder(typeElement, metaData, Optional.of(packageName));
                             }
                         }
@@ -136,50 +133,51 @@ public class RecordBuilderProcessor extends AbstractProcessor {
         }
     }
 
-    private String buildPackageName(String packagePattern, Element builderElement, TypeElement includedClass) {
+    private String buildPackageName(String packagePattern, Element builderElement, TypeElement includedClass)
+    {
         PackageElement includedClassPackage = findPackageElement(includedClass, includedClass);
         if (includedClassPackage == null) {
             return null;
         }
         String replaced = packagePattern.replace("*", includedClassPackage.getQualifiedName().toString());
         if (builderElement instanceof PackageElement) {
-            return replaced.replace("@", ((PackageElement)builderElement).getQualifiedName().toString());
+            return replaced.replace("@", ((PackageElement) builderElement).getQualifiedName().toString());
         }
-        return replaced.replace("@", ((PackageElement)builderElement.getEnclosingElement()).getQualifiedName().toString());
+        return replaced.replace("@", ((PackageElement) builderElement.getEnclosingElement()).getQualifiedName().toString());
     }
 
-    private PackageElement findPackageElement(Element actualElement, Element includedClass) {
+    private PackageElement findPackageElement(Element actualElement, Element includedClass)
+    {
         if (includedClass == null) {
             processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Element has not package", actualElement);
             return null;
         }
         if (includedClass.getEnclosingElement() instanceof PackageElement) {
-            return (PackageElement)includedClass.getEnclosingElement();
+            return (PackageElement) includedClass.getEnclosingElement();
         }
         return findPackageElement(actualElement, includedClass.getEnclosingElement());
     }
 
-    private void processRecordInterface(TypeElement element, boolean addRecordBuilder, RecordBuilderMetaData metaData, Optional<String> packageName) {
-        if ( !element.getKind().isInterface() )
-        {
+    private void processRecordInterface(TypeElement element, boolean addRecordBuilder, RecordBuilder.Options metaData, Optional<String> packageName)
+    {
+        if (!element.getKind().isInterface()) {
             processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "RecordInterface only valid for interfaces.", element);
             return;
         }
         var internalProcessor = new InternalRecordInterfaceProcessor(processingEnv, element, addRecordBuilder, metaData, packageName);
-        if ( !internalProcessor.isValid() )
-        {
+        if (!internalProcessor.isValid()) {
             return;
         }
         writeRecordInterfaceJavaFile(element, internalProcessor.packageName(), internalProcessor.recordClassType(), internalProcessor.recordType(), metaData, internalProcessor::toRecord);
     }
 
-    private void processRecordBuilder(TypeElement record, RecordBuilderMetaData metaData, Optional<String> packageName) {
+    private void processRecordBuilder(TypeElement record, RecordBuilder.Options metaData, Optional<String> packageName)
+    {
         // we use string based name comparison for the element kind,
         // as the ElementKind.RECORD enum doesn't exist on JRE releases
         // older than Java 14, and we don't want to throw unexpected
         // NoSuchFieldErrors
-        if ( !"RECORD".equals(record.getKind().name()) )
-        {
+        if (!"RECORD".equals(record.getKind().name())) {
             processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "RecordBuilder only valid for records.", record);
             return;
         }
@@ -187,26 +185,25 @@ public class RecordBuilderProcessor extends AbstractProcessor {
         writeRecordBuilderJavaFile(record, internalProcessor.packageName(), internalProcessor.builderClassType(), internalProcessor.builderType(), metaData);
     }
 
-    private void writeRecordBuilderJavaFile(TypeElement record, String packageName, ClassType builderClassType, TypeSpec builderType, RecordBuilderMetaData metaData) {
+    private void writeRecordBuilderJavaFile(TypeElement record, String packageName, ClassType builderClassType, TypeSpec builderType, RecordBuilder.Options metaData)
+    {
         // produces the Java file
         JavaFile javaFile = javaFileBuilder(packageName, builderType, metaData);
         Filer filer = processingEnv.getFiler();
-        try
-        {
+        try {
             String fullyQualifiedName = packageName.isEmpty() ? builderClassType.name() : (packageName + "." + builderClassType.name());
             JavaFileObject sourceFile = filer.createSourceFile(fullyQualifiedName);
-            try (Writer writer = sourceFile.openWriter())
-            {
+            try (Writer writer = sourceFile.openWriter()) {
                 javaFile.writeTo(writer);
             }
         }
-        catch ( IOException e )
-        {
+        catch (IOException e) {
             handleWriteError(record, e);
         }
     }
 
-    private void writeRecordInterfaceJavaFile(TypeElement element, String packageName, ClassType classType, TypeSpec type, RecordBuilderMetaData metaData, Function<String, String> toRecordProc) {
+    private void writeRecordInterfaceJavaFile(TypeElement element, String packageName, ClassType classType, TypeSpec type, RecordBuilder.Options metaData, Function<String, String> toRecordProc)
+    {
         JavaFile javaFile = javaFileBuilder(packageName, type, metaData);
 
         String classSourceCode = javaFile.toString();
@@ -214,35 +211,32 @@ public class RecordBuilderProcessor extends AbstractProcessor {
         String recordSourceCode = toRecordProc.apply(classSourceCode);
 
         Filer filer = processingEnv.getFiler();
-        try
-        {
+        try {
             String fullyQualifiedName = packageName.isEmpty() ? classType.name() : (packageName + "." + classType.name());
             JavaFileObject sourceFile = filer.createSourceFile(fullyQualifiedName);
-            try (Writer writer = sourceFile.openWriter())
-            {
+            try (Writer writer = sourceFile.openWriter()) {
                 writer.write(recordSourceCode);
             }
         }
-        catch ( IOException e )
-        {
+        catch (IOException e) {
             handleWriteError(element, e);
         }
     }
 
-    private JavaFile javaFileBuilder(String packageName, TypeSpec type, RecordBuilderMetaData metaData) {
+    private JavaFile javaFileBuilder(String packageName, TypeSpec type, RecordBuilder.Options metaData)
+    {
         var javaFileBuilder = JavaFile.builder(packageName, type).skipJavaLangImports(true).indent(metaData.fileIndent());
         var comment = metaData.fileComment();
-        if ( (comment != null) && !comment.isEmpty() )
-        {
+        if ((comment != null) && !comment.isEmpty()) {
             javaFileBuilder.addFileComment(comment);
         }
         return javaFileBuilder.build();
     }
 
-    private void handleWriteError(TypeElement element, IOException e) {
+    private void handleWriteError(TypeElement element, IOException e)
+    {
         String message = "Could not create source file";
-        if ( e.getMessage() != null )
-        {
+        if (e.getMessage() != null) {
             message = message + ": " + e.getMessage();
         }
         processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, message, element);

record-builder-processor/src/main/java/io/soabase/recordbuilder/processor/RecordClassType.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.processor;
+
+import com.squareup.javapoet.TypeName;
+
+import javax.lang.model.element.AnnotationMirror;
+import java.util.List;
+
+public class RecordClassType extends ClassType {
+    private final List<? extends AnnotationMirror> accessorAnnotations;
+    private final List<? extends AnnotationMirror> canonicalConstructorAnnotations;
+
+    public RecordClassType(TypeName typeName, String name, List<? extends AnnotationMirror> accessorAnnotations, List<? extends AnnotationMirror> canonicalConstructorAnnotations) {
+        super(typeName, name);
+        this.accessorAnnotations = accessorAnnotations;
+        this.canonicalConstructorAnnotations = canonicalConstructorAnnotations;
+    }
+
+    public List<? extends AnnotationMirror> getAccessorAnnotations() {
+        return accessorAnnotations;
+    }
+
+    public List<? extends AnnotationMirror> getCanonicalConstructorAnnotations() {
+        return canonicalConstructorAnnotations;
+    }
+}

record-builder-test/pom.xml

@@ -3,19 +3,45 @@
     <parent>
         <groupId>io.soabase.record-builder</groupId>
         <artifactId>record-builder</artifactId>
-        <version>1.19-SNAPSHOT</version>
+        <version>24</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
     <artifactId>record-builder-test</artifactId>
 
+    <properties>
+        <license-file-path>${project.parent.basedir}/src/etc/header.txt</license-file-path>
+    </properties>
+
     <dependencies>
+        <dependency>
+            <groupId>javax.validation</groupId>
+            <artifactId>validation-api</artifactId>
+        </dependency>
+
         <dependency>
             <groupId>io.soabase.record-builder</groupId>
             <artifactId>record-builder-core</artifactId>
             <scope>provided</scope>
         </dependency>
 
+        <dependency>
+            <groupId>io.soabase.record-builder</groupId>
+            <artifactId>record-builder-validator</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.hibernate.validator</groupId>
+            <artifactId>hibernate-validator</artifactId>
+            <scope>provided</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.glassfish</groupId>
+            <artifactId>javax.el</artifactId>
+            <scope>provided</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>

record-builder-test/src/main/java/io/soabase/recordbuilder/test/Annotated.java

@@ -0,0 +1,26 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import io.soabase.recordbuilder.core.RecordBuilder;
+import javax.validation.constraints.Max;
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Null;
+
+@RecordBuilder
+public record Annotated(@NotNull @Null String hey, @Min(10) @Max(100) int i, double d) {
+}

record-builder-test/src/main/java/io/soabase/recordbuilder/test/MyTemplate.java

@@ -0,0 +1,26 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import io.soabase.recordbuilder.core.RecordBuilder;
+
+@RecordBuilder.Template(options = @RecordBuilder.Options(
+        fileComment = "This is a test",
+        withClassName = "Com"
+))
+public @interface MyTemplate
+{
+}

record-builder-test/src/main/java/io/soabase/recordbuilder/test/RecordWithOptional.java

@@ -0,0 +1,27 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import io.soabase.recordbuilder.core.RecordBuilder;
+
+import java.util.Optional;
+import java.util.OptionalDouble;
+import java.util.OptionalInt;
+import java.util.OptionalLong;
+
+@RecordBuilder.Options(emptyDefaultForOptional = true)
+@RecordBuilder
+public record RecordWithOptional(Optional<String> value, Optional raw, OptionalInt i, OptionalLong l, OptionalDouble d) {}

record-builder-test/src/main/java/io/soabase/recordbuilder/test/RequiredRecord.java

@@ -0,0 +1,25 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import io.soabase.recordbuilder.core.RecordBuilder;
+
+import javax.validation.constraints.NotNull;
+
+@RecordBuilder.Options(interpretNotNulls = true)
+@RecordBuilder
+public record RequiredRecord(@NotNull String hey, @NotNull int i) implements RequiredRecordBuilder.With {
+}

record-builder-test/src/main/java/io/soabase/recordbuilder/test/RequiredRecord2.java

@@ -0,0 +1,25 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import io.soabase.recordbuilder.core.RecordBuilder;
+
+import javax.validation.constraints.NotNull;
+
+@RecordBuilder.Options(useValidationApi = true)
+@RecordBuilder
+public record RequiredRecord2(@NotNull String hey, @NotNull int i) implements RequiredRecord2Builder.With {
+}

record-builder-test/src/main/java/io/soabase/recordbuilder/test/SimpleRecord.java

@@ -18,5 +18,6 @@ package io.soabase.recordbuilder.test;
 import io.soabase.recordbuilder.core.RecordBuilder;
 
 @RecordBuilder
+@RecordBuilder.Options(prefixEnclosingClassNames = false)
 public record SimpleRecord(int i, String s) {
 }

record-builder-test/src/main/java/io/soabase/recordbuilder/test/TemplateTest.java

@@ -0,0 +1,23 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import java.time.Instant;
+
+@MyTemplate
+public record TemplateTest(String text, Instant date) implements TemplateTestBuilder.Com
+{
+}

record-builder-test/src/test/java/io/soabase/recordbuilder/test/TestAnnotated.java

@@ -0,0 +1,101 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import javax.validation.constraints.Max;
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Null;
+import java.lang.reflect.AnnotatedElement;
+
+class TestAnnotated {
+    @Test
+    void testStaticConstructor() throws NoSuchMethodException {
+        var method = AnnotatedBuilder.class.getMethod("Annotated", String.class, Integer.TYPE, Double.TYPE);
+        var parameters = method.getParameters();
+        Assertions.assertEquals(3, parameters.length);
+        assertHey(parameters[0]);
+        assertI(parameters[1]);
+        assertD(parameters[2]);
+    }
+
+    @Test
+    void testSetters() throws NoSuchMethodException {
+        var method = AnnotatedBuilder.class.getMethod("hey", String.class);
+        var parameters = method.getParameters();
+        Assertions.assertEquals(1, parameters.length);
+        assertHey(parameters[0]);
+
+        method = AnnotatedBuilder.class.getMethod("i", Integer.TYPE);
+        parameters = method.getParameters();
+        Assertions.assertEquals(1, parameters.length);
+        assertI(parameters[0]);
+
+        method = AnnotatedBuilder.class.getMethod("d", Double.TYPE);
+        parameters = method.getParameters();
+        Assertions.assertEquals(1, parameters.length);
+        assertD(parameters[0]);
+    }
+
+    @Test
+    void testGetters() throws NoSuchMethodException {
+        var method = AnnotatedBuilder.class.getMethod("hey");
+        assertHey(method);
+
+        method = AnnotatedBuilder.class.getMethod("i");
+        assertI(method);
+
+        method = AnnotatedBuilder.class.getMethod("d");
+        assertD(method);
+    }
+
+    @Test
+    void testWitherSetters() throws NoSuchMethodException {
+        var method = AnnotatedBuilder.With.class.getMethod("withHey", String.class);
+        var parameters = method.getParameters();
+        Assertions.assertEquals(1, parameters.length);
+        assertHey(parameters[0]);
+
+        method = AnnotatedBuilder.With.class.getMethod("withI", Integer.TYPE);
+        parameters = method.getParameters();
+        Assertions.assertEquals(1, parameters.length);
+        assertI(parameters[0]);
+
+        method = AnnotatedBuilder.With.class.getMethod("withD", Double.TYPE);
+        parameters = method.getParameters();
+        Assertions.assertEquals(1, parameters.length);
+        assertD(parameters[0]);
+    }
+
+    private void assertD(AnnotatedElement d) {
+        Assertions.assertEquals(0, d.getAnnotations().length);
+    }
+
+    private void assertI(AnnotatedElement i) {
+        Assertions.assertNotNull(i.getAnnotation(Min.class));
+        Assertions.assertEquals(i.getAnnotation(Min.class).value(), 10);
+        Assertions.assertNotNull(i.getAnnotation(Max.class));
+        Assertions.assertEquals(i.getAnnotation(Max.class).value(), 100);
+    }
+
+    private void assertHey(AnnotatedElement hey) {
+        Assertions.assertNotNull(hey.getAnnotation(NotNull.class));
+        Assertions.assertNotNull(hey.getAnnotation(Null.class));
+    }
+}

record-builder-test/src/test/java/io/soabase/recordbuilder/test/TestOptional.java

@@ -0,0 +1,36 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Optional;
+import java.util.OptionalDouble;
+import java.util.OptionalInt;
+import java.util.OptionalLong;
+
+class TestOptional {
+    @Test
+    void testDefaultEmpty() {
+        var record = RecordWithOptionalBuilder.builder();
+        Assertions.assertEquals(Optional.empty(), record.value());
+        Assertions.assertEquals(Optional.empty(), record.raw());
+        Assertions.assertEquals(OptionalInt.empty(), record.i());
+        Assertions.assertEquals(OptionalLong.empty(), record.l());
+        Assertions.assertEquals(OptionalDouble.empty(), record.d());
+    }
+}

record-builder-test/src/test/java/io/soabase/recordbuilder/test/TestTemplate.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.time.Instant;
+
+class TestTemplate {
+    @Test
+    void testTemplate() {
+        var t = TemplateTestBuilder.TemplateTest("one", Instant.MIN);
+        var w = t.withText("other");
+        Assertions.assertEquals("one", t.text());
+        Assertions.assertEquals("other", w.text());
+    }
+}

record-builder-test/src/test/java/io/soabase/recordbuilder/test/TestValidation.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.test;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import javax.validation.ValidationException;
+
+class TestValidation {
+    @Test
+    void testNotNulls() {
+        Assertions.assertThrows(NullPointerException.class, () -> RequiredRecordBuilder.builder().build());
+    }
+
+    @Test
+    void testValidation() {
+        Assertions.assertThrows(ValidationException.class, () -> RequiredRecord2Builder.builder().build());
+    }
+
+    @Test
+    void testNotNullsWithNewProperty() {
+        var valid = RequiredRecordBuilder.builder().hey("hey").i(1).build();
+        Assertions.assertThrows(NullPointerException.class, () -> valid.withHey(null));
+    }
+
+    @Test
+    void testValidationWithNewProperty() {
+        var valid = RequiredRecord2Builder.builder().hey("hey").i(1).build();
+        Assertions.assertThrows(ValidationException.class, () -> valid.withHey(null));
+    }
+}

record-builder-test/src/test/java/io/soabase/recordbuilder/test/TestWithers.java

@@ -59,11 +59,4 @@ class TestWithers {
         Assertions.assertEquals(20, r3.i());
         Assertions.assertEquals("twenty", r3.s());
     }
-
-    private static class BadSubclass implements PersonRecordBuilder.With {}
-
-    @Test
-    void testBadWithSubclass() {
-        Assertions.assertThrows(RuntimeException.class, () -> new BadSubclass().withAge(10));
-    }
 }

record-builder-validator/pom.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>io.soabase.record-builder</groupId>
+        <artifactId>record-builder</artifactId>
+        <version>24</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>record-builder-validator</artifactId>
+
+    <properties>
+        <license-file-path>${project.parent.basedir}/src/etc/header.txt</license-file-path>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>io.soabase.recordbuilder.validator</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

record-builder-validator/src/main/java/io/soabase/recordbuilder/validator/RecordBuilderValidator.java

@@ -0,0 +1,80 @@
+/**
+ * Copyright 2019 Jordan Zimmerman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.soabase.recordbuilder.validator;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.Set;
+
+// complete Java Validation via reflection to avoid dependencies
+public class RecordBuilderValidator {
+    private static final Object validator;
+    private static final Method validationMethod;
+    private static final Constructor<?> constraintViolationExceptionCtor;
+    private static final Class<?>[] emptyGroups = new Class<?>[0];
+
+    private static final boolean PRINT_ERROR_STACKTRACE = Boolean.getBoolean("record_builder_validator_errors");
+
+    static {
+        Object localValidator = null;
+        Method localValidationMethod = null;
+        Constructor<?> localConstraintViolationExceptionCtor = null;
+        try {
+            var validationClass = Class.forName("javax.validation.Validation");
+            var factoryClass = validationClass.getDeclaredMethod("buildDefaultValidatorFactory");
+            var factory = factoryClass.invoke(null);
+            var getValidatorMethod = factory.getClass().getMethod("getValidator");
+            var constraintViolationExceptionClass = Class.forName("javax.validation.ConstraintViolationException");
+            localValidator = getValidatorMethod.invoke(factory);
+            localValidationMethod = localValidator.getClass().getMethod("validate", Object.class, Class[].class);
+            localConstraintViolationExceptionCtor = constraintViolationExceptionClass.getConstructor(Set.class);
+        } catch (Exception e) {
+            if (PRINT_ERROR_STACKTRACE) {
+                e.printStackTrace();
+            }
+        }
+        validator = localValidator;
+        validationMethod = localValidationMethod;
+        constraintViolationExceptionCtor = localConstraintViolationExceptionCtor;
+    }
+
+    public static <T> T validate(T o) {
+        if ((validator != null) && (validationMethod != null)) {
+            try {
+                var violations = validationMethod.invoke(validator, o, emptyGroups);
+                if (!((Collection<?>) violations).isEmpty()) {
+                    throw (RuntimeException) constraintViolationExceptionCtor.newInstance(violations);
+                }
+            } catch (IllegalAccessException | InstantiationException e) {
+                throw new RuntimeException(e);
+            } catch (InvocationTargetException e) {
+                if (e.getCause() != null) {
+                    if (e.getCause() instanceof RuntimeException) {
+                        throw (RuntimeException) e.getCause();
+                    }
+                    throw new RuntimeException(e.getCause());
+                }
+                throw new RuntimeException(e);
+            }
+        }
+        return o;
+    }
+
+    private RecordBuilderValidator() {
+    }
+}