EntityListener that modify property value of a entity, causes invalid state
exception
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Key: OPENJPA-327
URL: https://issues.apache.org/jira/browse/OPENJPA-327
Project: OpenJPA
Issue Type: Bug
Components: jpa
Affects Versions: 1.0.0
Environment: windows xp, jdk 5
code was build time enhanced
Reporter: Henry Lai
entitylistener callback that modifies property value of the entity throws
exception
The following test code produces the following exception
<1.0.0-SNAPSHOT-SNAPSHOT fatal user error>
org.apache.openjpa.persistence.InvalidStateException: Attempt to set column
"T1ENTITY.VER_ID" to two different values: (class java.lang.Integer)"2", (class
java.lang.Integer)"3" This can occur when you fail to set both sides of a
two-sided relation between objects, or when you map different fields to the
same column, but you do not keep the values of these fields in synch.
at org.apache.openjpa.jdbc.sql.PrimaryRow.setObject(PrimaryRow.java:338)
at org.apache.openjpa.jdbc.sql.RowImpl.setObject(RowImpl.java:505)
/**
* for entity with version field, and if the lifecycle listener such as
* pre-persist, post-persist handler modifies the entity
* then when flush is invoke, results in optimistic lock exception
*
* this test failes in openjpa 0.9.6
* this test failes in openjpa 0.9.7
* this test failes in openjpa 1.0.0
*
* This test case will past with either of following changes
* 1) comment out em.flush();
* 2) uncomment <post-update method-name="postUpdate"/> in the orm.xml
file
*
*/
public void testMultipleInsertWithEntityListener(){
PersistenceProviderImpl openJPA = new PersistenceProviderImpl();
EntityManagerFactory factory =
openJPA.createEntityManagerFactory("test",
"ptp/test/issue1/persistence.xml",
System.getProperties() );
EntityManager em = factory.createEntityManager();
em.getTransaction().begin();
T1Entity e1 = new T1Entity();
T1Entity e2 = new T1Entity();
e1.setName("Mickey");
e2.setName("Goofy");
em.persist(e1);
em.flush(); // works if this line is commented out
em.persist(e2);
em.getTransaction().commit();
em.close();
}
package ptp.test.issue1;
import java.sql.Timestamp;
public class T1EntityListener {
static int count;
int instNum;
public T1EntityListener() {
instNum = count++;
System.out.println("T1EntityListener=" + this + ", instance=" + instNum );
}
public void preUpdate(Object entity) {
audit( "preUpdate", entity);
}
public void postUpdate(Object entity) {
audit( "postUpdate", entity);
}
public void prePersist(Object entity) {
audit( "prePersist", entity);
}
public void postPersist(Object entity) {
audit( "postPersist", entity);
}
public void audit(String eventName, Object entity) {
if (entity instanceof IAudit) {
IAudit auditEntity = (IAudit) entity;
System.out.println("****T1EntityListener inst=" + instNum + ", event=" +
eventName + ", entity=" + auditEntity + ", ver=" + auditEntity.getVerId());
try {
auditEntity.setModifyDateTime(createTimeStamp());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
private Timestamp createTimeStamp() {
return new Timestamp(System.currentTimeMillis());
}
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