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https://issues.apache.org/jira/browse/OPENJPA-572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12605009#action_12605009
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Fay Wang commented on OPENJPA-572:
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Hi, This problem could be reproduced in openjpa 1.2 before Patrick checked in
VersionAttachStrategy (r666896) for JIRA-245. As you said, the merge for
IdClass failed, but works for embedded class. After Patrick's fix, the merge
for IdClass works fine, but embedded id class now failed for merge. I did some
investigation, and found that in your test case, you have both generatedValue
annotation and EmbeddedId annotation, which makes openjpa think the detached
object is a new entity. If I commented out the GeneratedValue annotation, your
test case works fine when merging the entity with embedded id. .
@Entity
@Table(name = "cvss_vector")
public class CvssVector
implements Serializable
{
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "cvss_vector_id", nullable = false, unique = true, updatable =
false)
private Long id = null;
@EmbeddedId
private CvssVectorId emId = null;
> Merge operation fails with IdClass composite key
> ------------------------------------------------
>
> Key: OPENJPA-572
> URL: https://issues.apache.org/jira/browse/OPENJPA-572
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 1.0.2
> Environment: Windows XP Pro, MySQL 5.1x, Java JDK 1.5
> Libraries:
> commons:
> - Collections
> - DBCP
> - Lang
> - Logging
> - Pool
> Geronimo
> - jpa_ 3.0_spec-1.0
> - jta_1.1_spec-1.1
> OpenJpa 1.0.2
> Serp
> MySQL Connector/J (latest)
> Reporter: Chadwick M Baatz
> Fix For: 1.0.3
>
> Attachments: test.zip
>
>
> I've tried to use composite keys through the IdClass annotation, but the
> merge operation fails with the following error. I used the ApplicationIdTool
> to generate the IdClass object. What's odd is that I can take that exact
> same code and just switch the logic to use the Embeddable/EmbeddedId
> annotations and the merge command works.
> Exception in thread "main" <openjpa-1.0.2-r420667:627158 nonfatal user error>
> org.apache.openjpa.persistence.ArgumentException: The given value
> "idclass.CvssVector-1.0::Base" cannot be converted into an identity for
> "class idclass.CvssVector". The value is the wrong type
> (org.apache.openjpa.util.ObjectId).
> at
> org.apache.openjpa.kernel.BrokerImpl.newObjectId(BrokerImpl.java:1094)
> at
> org.apache.openjpa.kernel.VersionAttachStrategy.findFromDatabase(VersionAttachStrategy.java:372)
> at
> org.apache.openjpa.kernel.VersionAttachStrategy.attach(VersionAttachStrategy.java:77)
> at
> org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:241)
> at
> org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:101)
> at org.apache.openjpa.kernel.BrokerImpl.attach(BrokerImpl.java:3160)
> at
> org.apache.openjpa.kernel.DelegatingBroker.attach(DelegatingBroker.java:1142)
> at
> org.apache.openjpa.persistence.EntityManagerImpl.merge(EntityManagerImpl.java:665)
> at idclass.TestSave.main(TestSave.java:41)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
> Caused by: java.lang.ClassCastException: org.apache.openjpa.util.ObjectId
> at idclass.CvssVector.pcCopyKeyFieldsToObjectId(CvssVector.java)
> at
> org.apache.openjpa.enhance.PCRegistry.copyKeyFieldsToObjectId(PCRegistry.java:160)
> at
> org.apache.openjpa.util.ApplicationIds.fromPKValues(ApplicationIds.java:195)
> at
> org.apache.openjpa.kernel.BrokerImpl.newObjectId(BrokerImpl.java:1087)
> ... 13 more
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