[JAVA] Switch from slim3-gen to slim3-gen-jsr269

Motivation to switch to slim3-gen-jsr269

From Java8, apt used in slim3-gen is obsolete /view_bug.do?bug_id=7041249).

Edited part

pom.xml

#Artif related
slim3-gen -> slim3-gen-jsr269

#Switch apt artifacts
org.codehaus.mojo apt-maven-plugin -> com.mysema.maven apt-maven-plugin

#Delete apt related description

Source output destination

By default, the sources are output to target / generated-sources / annotations. To change this to $ {generated.src}, set as follows.

pom.xml

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.7.0</version>
        <configuration>
          <!-- Need to disable default annotation processing since apt-maven-plugin takes over -->
          <compilerArgument>-proc:none</compilerArgument>
        </configuration>
      </plugin>
      <plugin>
        <groupId>com.mysema.maven</groupId>
        <artifactId>apt-maven-plugin</artifactId>
        <version>1.1.3</version>
        <executions>
          <execution>
            <goals>
              <goal>process</goal>
            </goals>
            <configuration>
              <outputDirectory>${generated.src}</outputDirectory>
              <processors>
                <processor>org.slim3.gen.processor.ModelProcessor</processor>
              </processors>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <version>3.0.0</version>
        <executions>
          <execution>
            <!-- Need to ensure the generated source folder is added to the project classpath -->
            <id>add-source</id>
            <phase>generate-sources</phase>
            <goals>
              <goal>add-source</goal>
            </goals>
            <configuration>
              <sources>
                <source>${generated.src}</source>
              </sources>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

Reference material

https://github.com/redhat-developer/vscode-java/wiki/Annotation-Processing-support-for-Maven-projects