Using table-generator in XML descriptor results in ClassCastException
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Key: OPENJPA-940
URL: https://issues.apache.org/jira/browse/OPENJPA-940
Project: OpenJPA
Issue Type: Bug
Affects Versions: 1.2.0, 2.0.0
Environment: Windows XP
Java SE 6 Update 11
Reporter: Ulrich Hermsen
Priority: Critical
Defining a table generator in the XML descriptor leads to a class cast
exception. The reason is a probably unintentional fall through of a switch/case
block in class XMLPersistenceMetaDataSerializer line 502:
...
switch (type) {
case TYPE_META:
serializeClass((ClassMetaData) obj, fieldAccess
&& propertyAccess);
break;
case TYPE_SEQ:
if (isMappingMode())
serializeSequence((SequenceMetaData) obj);
// HERE SHOULD BE A break;
case TYPE_QUERY:
serializeQuery((QueryMetaData) obj);
break;
...
As a result I get the following stack:
219 testPU INFO [main] openjpa.Runtime - Starting OpenJPA 1.2.0
688 testPU INFO [main] openjpa.jdbc.JDBC - Using dictionary class
"org.apache.openjpa.jdbc.sql.DerbyDictionary".
3329 testPU WARN [main] openjpa.MetaData - Found duplicate generator
"tableGen" in "class com.daimler.tss.lab.jpa.pojo.Slave". Ignoring.
3830 testPU INFO [main] openjpa.MetaData - Writing to file
"C:\Uli\Workspaces\TSS_ganymede_2\OpenJPA
Test\build\classes\META-INF\test-orm.xml".
3986 testPU INFO [main] openjpa.MetaData - Writing sequence "tableGen".
Exception in thread "main" <openjpa-1.2.0-r422266:683325 nonfatal general
error> org.apache.openjpa.persistence.PersistenceException:
org.apache.openjpa.jdbc.meta.SequenceMapping cannot be cast to
org.apache.openjpa.meta.QueryMetaData
at
org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:196)
at
org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:56)
at
com.daimler.tss.lab.jpa.test.RelationshipManagementTest.createMaster(RelationshipManagementTest.java:47)
at
com.daimler.tss.lab.jpa.test.RelationshipManagementTest.main(RelationshipManagementTest.java:39)
Caused by: java.lang.ClassCastException:
org.apache.openjpa.jdbc.meta.SequenceMapping cannot be cast to
org.apache.openjpa.meta.QueryMetaData
at
org.apache.openjpa.persistence.XMLPersistenceMetaDataSerializer.serialize(XMLPersistenceMetaDataSerializer.java:504)
at
org.apache.openjpa.lib.meta.XMLMetaDataSerializer.serialize(XMLMetaDataSerializer.java:257)
at
org.apache.openjpa.lib.meta.XMLMetaDataSerializer.serialize(XMLMetaDataSerializer.java:121)
at
org.apache.openjpa.lib.meta.XMLMetaDataSerializer.serialize(XMLMetaDataSerializer.java:90)
at
org.apache.openjpa.meta.AbstractCFMetaDataFactory.serialize(AbstractCFMetaDataFactory.java:479)
at
org.apache.openjpa.meta.AbstractCFMetaDataFactory.store(AbstractCFMetaDataFactory.java:234)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:538)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:453)
at
org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:159)
at
org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:119)
at
org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:189)
... 6 more
May I suggest to run findBugs on your source code. That would have found this
section for sure. Does anyone test the XML descriptor stuff?
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