Revert "BAEL-4134"

patterns/cqrs-es/pom.xml

@@ -1,30 +1,36 @@
 <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">	
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <artifactId>cqrs-es</artifactId>
     <version>1.0-SNAPSHOT</version>
     <name>cqrs-es</name>
+    
     <parent>
         <groupId>com.baeldung</groupId>
         <artifactId>patterns</artifactId>
         <version>1.0.0-SNAPSHOT</version>
     </parent>
-    <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-    </properties>
+    
     <dependencies>
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>1.18.12</version>
+            <version>${lombok.version}</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.13</version>
+            <version>${junit.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
+
+    <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <junit.version>4.13</junit.version>
+        <lombok.version>1.18.12</lombok.version>
+    </properties>
+
 </project>

patterns/solid/README.md

@@ -2,4 +2,4 @@
 
 - [A Solid Guide to Solid Principles](https://www.baeldung.com/solid-principles)
 - [Single Responsibility Principle in Java](https://www.baeldung.com/java-single-responsibility-principle)
-
+- [Open/Closed Principle in Java](https://www.baeldung.com/java-open-closed-principle)

patterns/solid/src/main/java/com/baeldung/i/fixed/Bank.java

@@ -0,0 +1,5 @@
+package com.baeldung.i.fixed;
+
+public interface Bank extends Payment {
+    void initiatePayments();
+}

patterns/solid/src/main/java/com/baeldung/i/fixed/BankPayment.java

@@ -0,0 +1,21 @@
+package com.baeldung.i.fixed;
+
+import java.util.List;
+
+public class BankPayment implements Bank {
+
+    @Override
+    public void initiatePayments() {
+
+    }
+
+    @Override
+    public Object status() {
+        return null;
+    }
+
+    @Override
+    public List<Object> getPayments() {
+        return null;
+    }
+}

patterns/solid/src/main/java/com/baeldung/i/fixed/Loan.java

@@ -0,0 +1,6 @@
+package com.baeldung.i.fixed;
+
+public interface Loan extends Payment {
+    void intiateLoanSettlement();
+    void initiateRePayment();
+}

patterns/solid/src/main/java/com/baeldung/i/fixed/LoanPayment.java

@@ -0,0 +1,26 @@
+package com.baeldung.i.fixed;
+
+import java.util.List;
+
+public class LoanPayment implements Loan {
+
+    @Override
+    public void intiateLoanSettlement() {
+
+    }
+
+    @Override
+    public void initiateRePayment() {
+
+    }
+
+    @Override
+    public Object status() {
+        return null;
+    }
+
+    @Override
+    public List<Object> getPayments() {
+        return null;
+    }
+}

patterns/solid/src/main/java/com/baeldung/i/fixed/Payment.java

@@ -0,0 +1,8 @@
+package com.baeldung.i.fixed;
+
+import java.util.List;
+
+public interface Payment {
+    Object status();
+    List<Object> getPayments();
+}

patterns/solid/src/main/java/com/baeldung/i/polluted/BankPayment.java

@@ -0,0 +1,32 @@
+package com.baeldung.i.polluted;
+
+import java.util.Collections;
+import java.util.List;
+
+public class BankPayment implements Payment {
+
+    @Override
+    public void initiatePayments() {
+
+    }
+
+    @Override
+    public Object status() {
+        return null;
+    }
+
+    @Override
+    public List<Object> getPayments() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public void intiateLoanSettlement() {
+        throw new UnsupportedOperationException("This is not a loan payment");
+    }
+
+    @Override
+    public void initiateRePayment() {
+        throw new UnsupportedOperationException("This is not a loan payment");
+    }
+}

patterns/solid/src/main/java/com/baeldung/i/polluted/LoanPayment.java

@@ -0,0 +1,31 @@
+package com.baeldung.i.polluted;
+
+import java.util.List;
+
+public class LoanPayment implements Payment {
+
+    @Override
+    public void initiatePayments() {
+
+    }
+
+    @Override
+    public Object status() {
+        return null;
+    }
+
+    @Override
+    public List<Object> getPayments() {
+        return null;
+    }
+
+    @Override
+    public void intiateLoanSettlement() {
+
+    }
+
+    @Override
+    public void initiateRePayment() {
+
+    }
+}

patterns/solid/src/main/java/com/baeldung/i/polluted/Payment.java

@@ -0,0 +1,13 @@
+package com.baeldung.i.polluted;
+
+import java.util.List;
+
+public interface Payment {
+    void initiatePayments();
+    Object status();
+    List<Object> getPayments();
+
+    //Loan related methods
+    void intiateLoanSettlement();
+    void initiateRePayment();
+}