Sachin Handiekar
Sachin Handiekar's Blog


Sachin Handiekar's Blog


OpenJPA Entity Enhancement in OSGI container

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Sachin Handiekar
·Aug 7, 2013·

1 min read


In this example we will see how to enhance the JPA entities before usage in OSGi container.

Let’s assume we got an entity called Person.


import javax.persistence.Entity;
import javax.persistence.Id;

public class Person implements Serializable {
    private static final long serialVersionUID = 1L;

    private long id;

    private String name;

    public long getId() {
        return id;

    public void setId(long id) { = id;

    public String getName() {
        return name;

    public void setName(String name) { = name;


Maven Dependencies



Maven Plugin

     <path id="enhance.path.ref">
      <fileset dir="${}">
       <include name="Person.class" />
     <pathconvert property="enhance.files" refid="enhance.path.ref"
         pathsep=" " />
     <java classname="org.apache.openjpa.enhance.PCEnhancer">
      <arg line="-p persistence.xml" />
      <arg line="${enhance.files}" />
       <path refid="maven.dependency.classpath" />
       <path refid="maven.compile.classpath" />
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