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https://issues.apache.org/jira/browse/OPENJPA-146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gokhan Ergul reopened OPENJPA-146:
----------------------------------
> Entity enhancement fails while using EmbeddedId on a MappedSuperclass
> ---------------------------------------------------------------------
>
> Key: OPENJPA-146
> URL: https://issues.apache.org/jira/browse/OPENJPA-146
> Project: OpenJPA
> Issue Type: Bug
> Components: kernel
> Environment: openjpa 0.9.6
> Reporter: Gokhan Ergul
> Attachments: test-case.zip
>
>
> Both buildtime and runtime class enhancement fail with the following error:
> ...
> 1339 TRACE [main] openjpa.Enhance - Enhancing type "class test.B".
> Exception in thread "main" <0|false|0.9.6-incubating>
> org.apache.openjpa.util.GeneralException: null
> at org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:350)
> at org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:3711)
> at org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:3661)
> at org.apache.openjpa.enhance.PCEnhancer.main(PCEnhancer.java:3633)
> Caused by: java.lang.NullPointerException
> at
> org.apache.openjpa.enhance.PCEnhancer.enhanceObjectId(PCEnhancer.java:2745)
> at org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:338)
> ... 3 more
> Test code as follows:
> test/A.java:
> --------------
> package test;
> import javax.persistence.*;
> import java.io.Serializable;
> @MappedSuperclass
> abstract public class A {
> @Embeddable
> public static class A_PK implements Serializable {
> @Basic
> protected int id1;
>
> @Basic
> protected String id2;
>
> public boolean equals (Object other) {
> return false;
> }
> public int hashCode () {
> return 0;
> }
> }
> @EmbeddedId
> protected A_PK pk;
> @Basic
> protected String val;
> }
> --------------
> test/B.java:
> --------------
> package test;
> import javax.persistence.Entity;
> @Entity
> public class B extends A {
> }
> --------------
> META-INF/persistence.xml:
> --------------
> <persistence xmlns="http://java.sun.com/xml/ns/persistence";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm
> http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd";
> version="1.0">
> <persistence-unit name="TestService" transaction-type="RESOURCE_LOCAL">
> <class>test.A$A_PK</class>
> <class>test.A</class>
> <class>test.B</class>
> <properties>
> <property name="openjpa.Log" value="DefaultLevel=TRACE"/>
> <property name="openjpa.ConnectionUserName" value="test"/>
> <property name="openjpa.ConnectionPassword" value="test"/>
> <property name="openjpa.ConnectionURL"
> value="jdbc:mysql://localhost:3306/oam?useServerPrepStmts=false"/>
> <property name="openjpa.ConnectionDriverName"
> value="com.mysql.jdbc.Driver"/>
> </properties>
> </persistence-unit>
> </persistence>
> --------------
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