Entity enhancement fails while using EmbeddedId on a MappedSuperclass
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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
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 {
}
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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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