working example

2021-08-08 12:36:07 +02:00
parent ff3b1dd161
commit 4a3a9923ef
27 changed files with 1414 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
--- a/.mvn/wrapper/MavenWrapperDownloader.java
+++ b/.mvn/wrapper/MavenWrapperDownloader.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * 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
+ *
+ *      https://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.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}
--- a/.mvn/wrapper/maven-wrapper.jar
+++ b/.mvn/wrapper/maven-wrapper.jar
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.1/apache-maven-3.8.1-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -0,0 +1,18 @@
+version: '3'
+services:
+  api-db:
+    image: postgres:alpine3.14
+    container_name: blog-db
+    ports:
+      - "5432:5432"
+    environment:
+      - POSTGRES_PASSWORD=postgres
+      - POSTGRES_USER=postgres
+  pg-admin:
+    container_name: hello
+    image: dpage/pgadmin4:5.5
+    environment:
+      - PGADMIN_DEFAULT_EMAIL=postgres@cpatrut.ro
+      - PGADMIN_DEFAULT_PASSWORD=postgres
+    ports:
+      - "3000:80"
--- a/310
+++ b/310
@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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
+#
+#    https://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.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
--- a/mvnw.cmd
+++ b/mvnw.cmd
@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%
--- a/pom.xml
+++ b/pom.xml
@@ -0,0 +1,106 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.5.2</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>dev.enblng</groupId>
+    <artifactId>api</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>api</name>
+    <description>API Guide with postgres database and API Specifications</description>
+    <properties>
+        <java.version>16</java.version>
+        <swagger.version>3.0.0</swagger.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.flywaydb</groupId>
+            <artifactId>flyway-core</artifactId>
+        </dependency>
+        <!--        TODO: delete-->
+        <dependency>
+            <groupId>org.modelmapper</groupId>
+            <artifactId>modelmapper</artifactId>
+            <version>2.3.6</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.20</version>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.springfox</groupId>
+            <artifactId>springfox-boot-starter</artifactId>
+            <version>3.0.0</version>
+        </dependency>
+        <dependency>
+            <groupId>io.springfox</groupId>
+            <artifactId>springfox-swagger-ui</artifactId>
+            <version>3.0.0</version>
+
+        </dependency>
+        <dependency>
+            <groupId>io.springfox</groupId>
+            <artifactId>springfox-bean-validators</artifactId>
+            <version>3.0.0</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
--- a/src/main/java/dev/enblng/api/ApiApplication.java
+++ b/src/main/java/dev/enblng/api/ApiApplication.java
@@ -0,0 +1,27 @@
+package dev.enblng.api;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.bind.annotation.RestController;
+import springfox.documentation.builders.PathSelectors;
+import springfox.documentation.builders.RequestHandlerSelectors;
+import springfox.documentation.spi.DocumentationType;
+import springfox.documentation.spring.web.plugins.Docket;
+
+@SpringBootApplication
+public class ApiApplication {
+
+    public static void main(final String[] args) {
+        SpringApplication.run(ApiApplication.class, args);
+    }
+
+    @Bean
+    public Docket api() {
+        return new Docket(DocumentationType.SWAGGER_2)
+                .select()
+                .apis(RequestHandlerSelectors.withClassAnnotation(RestController.class))
+                .paths(PathSelectors.any())
+                .build();
+    }
+}
--- a/src/main/java/dev/enblng/api/api/CommentController.java
+++ b/src/main/java/dev/enblng/api/api/CommentController.java
@@ -0,0 +1,59 @@
+package dev.enblng.api.api;
+
+import dev.enblng.api.dto.CommentTO;
+import dev.enblng.api.services.CommentService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+import javax.validation.constraints.NotNull;
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping(CommentController.PATH)
+@Slf4j
+public class CommentController {
+    static final String PATH = "comments";
+    private final CommentService commentService;
+
+    @Autowired
+    public CommentController(final CommentService commentService) {
+        this.commentService = commentService;
+    }
+
+    @PostMapping
+    public ResponseEntity<CommentTO> save(@Valid @RequestBody final CommentTO comment) {
+        log.debug("saving comment: " + comment);
+        return new ResponseEntity<>(commentService.save(comment), HttpStatus.CREATED);
+    }
+
+    @PutMapping
+    public ResponseEntity<Void> update(@Valid @RequestBody final CommentTO comment) {
+        log.debug("updating comment" + comment);
+        commentService.update(comment);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+
+    @GetMapping
+    public ResponseEntity<List<CommentTO>> getComments(@NotNull @RequestParam("postId") final UUID postId,
+                                                       @NotNull @RequestParam("page") final int page,
+                                                       @NotNull @RequestParam("size") final int size) {
+        log.debug("getting comments");
+        return new ResponseEntity<>(
+                commentService.getByPostId(postId, PageRequest.of(page, size)),
+                HttpStatus.OK
+        );
+    }
+
+    @DeleteMapping
+    public ResponseEntity<Void> delete(@NotNull @RequestParam("id") final UUID id) {
+        log.debug("deleting comment: " + id);
+        commentService.delete(id);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+}
--- a/src/main/java/dev/enblng/api/api/PostController.java
+++ b/src/main/java/dev/enblng/api/api/PostController.java
@@ -0,0 +1,58 @@
+package dev.enblng.api.api;
+
+import dev.enblng.api.dto.PostTO;
+import dev.enblng.api.services.PostService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+import javax.validation.constraints.NotNull;
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping(PostController.PATH)
+@Slf4j
+public class PostController {
+
+    final static String PATH = "posts";
+
+    private final PostService postService;
+
+    public PostController(final PostService postService) {
+        this.postService = postService;
+    }
+
+    @PostMapping
+    public ResponseEntity<PostTO> save(@Valid @RequestBody final PostTO post) {
+        log.debug("saving  post: " + post);
+        return new ResponseEntity<>(postService.save(post), HttpStatus.CREATED);
+    }
+
+    @PutMapping
+    public ResponseEntity<Void> update(@Valid @RequestBody final PostTO post) {
+        log.debug("updating post: " + post);
+        postService.update(post);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+
+    @GetMapping
+    public ResponseEntity<PostTO> getById(@NotNull @RequestParam("id") final UUID id) {
+        return new ResponseEntity<>(postService.getById(id), HttpStatus.OK);
+    }
+
+    @GetMapping("/all")
+    public ResponseEntity<List<PostTO>> getAll(@NotNull @RequestParam("page") final int page,
+                                               @NotNull @RequestParam("size") final int size) {
+        return new ResponseEntity<>(postService.findAll(PageRequest.of(page, size)), HttpStatus.OK);
+    }
+
+    @DeleteMapping
+    public ResponseEntity<Void> delete(@NotNull @RequestParam("id") final UUID id) {
+        postService.delete(id);
+        return new ResponseEntity<>(HttpStatus.OK);
+    }
+}
--- a/src/main/java/dev/enblng/api/config/BeanConfig.java
+++ b/src/main/java/dev/enblng/api/config/BeanConfig.java
@@ -0,0 +1,21 @@
+package dev.enblng.api.config;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+//TODO: delete
+@Configuration
+public class BeanConfig {
+    @Bean
+    public ModelMapper modelMapper() {
+        final ModelMapper modelMapper = new ModelMapper();
+
+        modelMapper.getConfiguration()
+                .setFieldMatchingEnabled(true)
+                .setFieldAccessLevel(org.modelmapper.config.Configuration.AccessLevel.PRIVATE);
+        return modelMapper;
+    }
+
+
+}
--- a/src/main/java/dev/enblng/api/dto/ApiModelPropertyValues.java
+++ b/src/main/java/dev/enblng/api/dto/ApiModelPropertyValues.java
@@ -0,0 +1,7 @@
+package dev.enblng.api.dto;
+
+public interface ApiModelPropertyValues {
+    String ONLY_FOR_GET_MESSAGE = "Used only for get operations";
+    String UUID_MESSAGE = "UUID values, must be populated for update & delete operations ";
+    String FOREIGN_KEY_MESSAGE = "Foreign key, must be used for update and post operations";
+}
--- a/src/main/java/dev/enblng/api/dto/CommentTO.java
+++ b/src/main/java/dev/enblng/api/dto/CommentTO.java
@@ -0,0 +1,59 @@
+package dev.enblng.api.dto;
+
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Value;
+
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+import java.util.UUID;
+
+import static dev.enblng.api.dto.ApiModelPropertyValues.*;
+
+
+@ApiModel(description = "Class representing a post on the blog")
+@Value
+@AllArgsConstructor
+public class CommentTO {
+
+    @ApiModelProperty(value = UUID_MESSAGE)
+    UUID id;
+
+    @ApiModelProperty(position = 1, required = true)
+    @Size(min = 5, max = 255)
+    String title;
+
+    @ApiModelProperty(position = 2, value = ONLY_FOR_GET_MESSAGE)
+    @NotNull
+    String author;
+
+    @ApiModelProperty(position = 3, required = true)
+    @Size(min = 10)
+    @NotNull
+    String content;
+
+    @ApiModelProperty(position = 5, value = ONLY_FOR_GET_MESSAGE)
+    String updateTime;
+
+    @ApiModelProperty(position = 4, value = ONLY_FOR_GET_MESSAGE)
+    String creationTime;
+
+    @ApiModelProperty(position = 6, value = FOREIGN_KEY_MESSAGE)
+    UUID postId;
+
+    @Builder
+    private static CommentTO newPostTo(final UUID id,
+                                       final String title,
+                                       final String author,
+                                       final String content,
+                                       final String updateTime,
+                                       final String creationTime,
+                                       final UUID postId
+    ) {
+        return new CommentTO(id, title, author, content, updateTime, creationTime, postId);
+    }
+
+}
--- a/src/main/java/dev/enblng/api/dto/PostTO.java
+++ b/src/main/java/dev/enblng/api/dto/PostTO.java
@@ -0,0 +1,56 @@
+package dev.enblng.api.dto;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Value;
+
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Null;
+import javax.validation.constraints.Size;
+import java.util.UUID;
+
+import static dev.enblng.api.dto.ApiModelPropertyValues.ONLY_FOR_GET_MESSAGE;
+import static dev.enblng.api.dto.ApiModelPropertyValues.UUID_MESSAGE;
+
+@ApiModel(description = "Class representing a post on the blog")
+@Value
+@AllArgsConstructor
+public class PostTO {
+
+    @ApiModelProperty(value = UUID_MESSAGE)
+    UUID id;
+
+    @ApiModelProperty(position = 1, required = true)
+    @Size(min = 5, max = 255)
+    @NotNull
+    String title;
+
+    @ApiModelProperty(value = ONLY_FOR_GET_MESSAGE, position = 2)
+    String author;
+
+    @ApiModelProperty(position = 3, required = true)
+    @Size(min = 10)
+    @NotNull
+    String content;
+
+    @ApiModelProperty(value = ONLY_FOR_GET_MESSAGE, position = 5)
+    @Null
+    String updateTime;
+
+    @ApiModelProperty(value = ONLY_FOR_GET_MESSAGE, position = 4)
+    @Null
+    String creationTime;
+
+    @Builder
+    private static PostTO newPostTo(final UUID id,
+                                    final String title,
+                                    final String author,
+                                    final String content,
+                                    final String updateTime,
+                                    final String creationTime
+    ) {
+        return new PostTO(id, title, author, content, updateTime, creationTime);
+    }
+}
--- a/src/main/java/dev/enblng/api/entities/CommentEntity.java
+++ b/src/main/java/dev/enblng/api/entities/CommentEntity.java
@@ -0,0 +1,40 @@
+package dev.enblng.api.entities;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.UpdateTimestamp;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.time.ZonedDateTime;
+import java.util.UUID;
+
+@Entity
+@Table(schema = "blog", name = "comments")
+@Getter
+@Setter
+public class CommentEntity {
+    @Id
+    @Column(name = "id", nullable = false)
+    private UUID id;
+
+    @Column(name = "title", nullable = false)
+    private String title;
+
+    @Column(name = "content", nullable = false)
+    private String content;
+
+    @Column(name = "update_time")
+    @UpdateTimestamp
+    private ZonedDateTime updateTime;
+
+    @Column(name = "creation_time", nullable = false)
+    @CreationTimestamp
+    private ZonedDateTime creationTime;
+
+    @Column(name = "post_id", nullable = false, updatable = false)
+    private UUID postId;
+}
--- a/src/main/java/dev/enblng/api/entities/PostEntity.java
+++ b/src/main/java/dev/enblng/api/entities/PostEntity.java
@@ -0,0 +1,42 @@
+package dev.enblng.api.entities;
+
+import lombok.Getter;
+import lombok.Setter;
+import org.hibernate.annotations.CreationTimestamp;
+import org.hibernate.annotations.UpdateTimestamp;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import java.time.ZonedDateTime;
+import java.util.UUID;
+
+@Entity
+@Table(schema = "blog", name = "posts")
+@Getter
+@Setter
+public class PostEntity {
+    @Id
+    @Column(name = "id", nullable = false)
+    private UUID id;
+
+    @Column(name = "title", nullable = false)
+    private String title;
+
+    @Column(name = "author", nullable = false)
+    private String author;
+
+
+    @Column(name = "content", nullable = false)
+    private String content;
+
+    @Column(name = "update_time")
+    @UpdateTimestamp
+    private ZonedDateTime updateTime;
+
+    @Column(name = "creation_time", nullable = false)
+    @CreationTimestamp
+    private ZonedDateTime creationTime;
+
+}
--- a/src/main/java/dev/enblng/api/repositories/BlogRepository.java
+++ b/src/main/java/dev/enblng/api/repositories/BlogRepository.java
@@ -0,0 +1,14 @@
+package dev.enblng.api.repositories;
+
+import org.springframework.data.repository.NoRepositoryBean;
+import org.springframework.data.repository.Repository;
+
+import java.io.Serializable;
+import java.util.Optional;
+
+@NoRepositoryBean
+public interface BlogRepository<T, ID extends Serializable> extends Repository<T, ID> {
+    Optional<T> getById(ID id);
+
+    <S extends T> S save(S entity);
+}
--- a/src/main/java/dev/enblng/api/repositories/CommentRepository.java
+++ b/src/main/java/dev/enblng/api/repositories/CommentRepository.java
@@ -0,0 +1,29 @@
+package dev.enblng.api.repositories;
+
+import dev.enblng.api.entities.CommentEntity;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+
+import javax.transaction.Transactional;
+import java.time.ZonedDateTime;
+import java.util.UUID;
+import java.util.stream.Stream;
+
+public interface CommentRepository extends BlogRepository<CommentEntity, UUID> {
+
+    @Transactional
+    Stream<CommentEntity> findAllByPostIdOrderByCreationTime(final UUID postId, Pageable pageable);
+
+    @Transactional
+    @Modifying
+    @Query("update CommentEntity c  set" +
+            " c.title=?1, c.content=?2, c.updateTime=?3 where  c.id=?4")
+    int updateComment(final String title,
+                      final String content,
+                      final ZonedDateTime updateTime,
+                      final UUID id);
+
+
+    int deleteById(UUID id);
+}
--- a/src/main/java/dev/enblng/api/repositories/PostRepository.java
+++ b/src/main/java/dev/enblng/api/repositories/PostRepository.java
@@ -0,0 +1,32 @@
+package dev.enblng.api.repositories;
+
+import dev.enblng.api.entities.PostEntity;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+
+import javax.transaction.Transactional;
+import java.time.ZonedDateTime;
+import java.util.UUID;
+
+public interface PostRepository extends BlogRepository<PostEntity, UUID> {
+
+    @Transactional
+    Page<PostEntity> findAll(Pageable pageable);
+
+    @Transactional
+    @Modifying
+    @Query("update PostEntity p set p.title = ?1, p.content = ?2, p.author = ?3" +
+            ",p.updateTime =?4  where p.id = ?5")
+    int updatePost(final String title,
+                   final String author,
+                   final String content,
+                   final ZonedDateTime updateTime,
+                   final UUID postId);
+
+    @Modifying
+    @Transactional
+    @Query("delete from PostEntity p where p.id=?1")
+    int deleteById(final UUID id);
+}
--- a/src/main/java/dev/enblng/api/services/CommentService.java
+++ b/src/main/java/dev/enblng/api/services/CommentService.java
@@ -0,0 +1,17 @@
+package dev.enblng.api.services;
+
+import dev.enblng.api.dto.CommentTO;
+import org.springframework.data.domain.Pageable;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface CommentService {
+    CommentTO save(final CommentTO comment);
+
+    List<CommentTO> getByPostId(final UUID postId, Pageable pageable);
+
+    void update(final CommentTO comment);
+
+    void delete(final UUID id);
+}
--- a/src/main/java/dev/enblng/api/services/PostService.java
+++ b/src/main/java/dev/enblng/api/services/PostService.java
@@ -0,0 +1,19 @@
+package dev.enblng.api.services;
+
+import dev.enblng.api.dto.PostTO;
+import org.springframework.data.domain.Pageable;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface PostService {
+    PostTO save(final PostTO post);
+
+    PostTO getById(final UUID id);
+
+    List<PostTO> findAll(final Pageable pageable);
+
+    void update(final PostTO post);
+
+    void delete(final UUID id);
+}
--- a/src/main/java/dev/enblng/api/services/impl/CommentServiceImpl.java
+++ b/src/main/java/dev/enblng/api/services/impl/CommentServiceImpl.java
@@ -0,0 +1,57 @@
+package dev.enblng.api.services.impl;
+
+import dev.enblng.api.dto.CommentTO;
+import dev.enblng.api.entities.CommentEntity;
+import dev.enblng.api.repositories.CommentRepository;
+import dev.enblng.api.services.CommentService;
+import org.modelmapper.ModelMapper;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+import java.time.ZonedDateTime;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+@Service
+public class CommentServiceImpl implements CommentService {
+
+    private final ModelMapper modelMapper;
+    private final CommentRepository commentRepository;
+
+    public CommentServiceImpl(final ModelMapper modelMapper, final CommentRepository commentRepository) {
+        this.modelMapper = modelMapper;
+        this.commentRepository = commentRepository;
+    }
+
+    @Override
+    public CommentTO save(final CommentTO comment) {
+        final CommentEntity entity = modelMapper.map(comment, CommentEntity.class);
+        entity.setId(UUID.randomUUID());
+        return modelMapper.map(commentRepository.save(entity), CommentTO.CommentTOBuilder.class).build();
+    }
+
+    @Override
+    @Transactional
+    public List<CommentTO> getByPostId(final UUID id, final Pageable pageable) {
+        return commentRepository.findAllByPostIdOrderByCreationTime(id, pageable)
+                .map(commentEntity -> modelMapper.map(commentEntity,
+                        CommentTO.CommentTOBuilder.class).build())
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public void update(final CommentTO comment) {
+        commentRepository.updateComment(comment.getTitle(),
+                comment.getContent(),
+                ZonedDateTime.now(),
+                comment.getId()
+        );
+    }
+
+    @Override
+    public void delete(final UUID id) {
+        commentRepository.deleteById(id);
+    }
+}
--- a/src/main/java/dev/enblng/api/services/impl/PostServiceImpl.java
+++ b/src/main/java/dev/enblng/api/services/impl/PostServiceImpl.java
@@ -0,0 +1,64 @@
+package dev.enblng.api.services.impl;
+
+import dev.enblng.api.dto.PostTO;
+import dev.enblng.api.entities.PostEntity;
+import dev.enblng.api.repositories.PostRepository;
+import dev.enblng.api.services.PostService;
+import org.modelmapper.ModelMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+
+import javax.persistence.EntityNotFoundException;
+import java.time.ZonedDateTime;
+import java.util.List;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+@Service
+public class PostServiceImpl implements PostService {
+    private final PostRepository postRepository;
+    private final ModelMapper modelMapper;
+
+    @Autowired
+    public PostServiceImpl(final ModelMapper modelMapper, final PostRepository postRepository) {
+        this.modelMapper = modelMapper;
+        this.postRepository = postRepository;
+    }
+
+    @Override
+    public PostTO save(final PostTO post) {
+        final PostEntity entity = modelMapper.map(post, PostEntity.class);
+        entity.setId(UUID.randomUUID());
+        return modelMapper.map(postRepository.save(entity), PostTO.PostTOBuilder.class)
+                .build();
+    }
+
+    @Override
+    public PostTO getById(final UUID id) {
+        final PostEntity entity = postRepository.getById(id)
+                .orElseThrow(EntityNotFoundException::new);
+        return modelMapper.map(entity, PostTO.PostTOBuilder.class).build();
+    }
+
+    @Override
+    public List<PostTO> findAll(final Pageable pageable) {
+        return postRepository.findAll(pageable).get()
+                .map(postEntity -> modelMapper.map(postEntity, PostTO.PostTOBuilder.class).build())
+                .collect(Collectors.toList());
+    }
+
+    @Override
+    public void update(final PostTO post) {
+        postRepository.updatePost(post.getTitle(),
+                post.getAuthor(),
+                post.getContent(),
+                ZonedDateTime.now(),
+                post.getId());
+    }
+
+    @Override
+    public void delete(final UUID id) {
+        postRepository.deleteById(id);
+    }
+}
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -0,0 +1,10 @@
+server.port=8080
+logging.level.org=info
+spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
+spring.datasource.username=postgres
+spring.datasource.password=postgres
+spring.datasource.driver-class-name=org.postgresql.Driver
+spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation=true
+spring.flyway.enabled=true
+spring.jpa.open-in-view=false
+spring.transaction.default-timeout=10
--- a/src/main/resources/db/migration/V1__init.sql
+++ b/src/main/resources/db/migration/V1__init.sql
@@ -0,0 +1,22 @@
+create schema if not exists blog;
+
+create table if not exists blog.posts
+(
+    id            uuid primary key,
+    title         varchar(255) not null,
+    author         varchar(255) not null,
+    content       text         not null,
+    creation_time timestamp    not null,
+    update_time   timestamp
+);
+
+create table if not exists blog.comments
+(
+    id            uuid primary key,
+    title         varchar(255) not null,
+    content       text         not null,
+    approved      boolean default false,
+    creation_time timestamp    not null,
+    update_time   timestamp,
+    post_id       uuid         not null references blog.posts
+);
--- a/src/test/java/dev/enblng/api/ApiApplicationTests.java
+++ b/src/test/java/dev/enblng/api/ApiApplicationTests.java
@@ -0,0 +1,13 @@
+package dev.enblng.api;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ApiApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}