Lucas Smith created OPENJPA-2184:
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Summary: Exception when <exclude-unlisted-classes> element is used
within persistence.xml
Key: OPENJPA-2184
URL: https://issues.apache.org/jira/browse/OPENJPA-2184
Project: OpenJPA
Issue Type: Bug
Components: jpa
Affects Versions: 2.2.0
Environment: JavaSE
Reporter: Lucas Smith
Here is my persistence.xml content:
{code:xml}
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd";>
<persistence-unit name="derbyPU" transaction-type="RESOURCE_LOCAL">
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="openjpa.ConnectionDriverName"
value="org.apache.derby.jdbc.ClientDriver" />
<property name="openjpa.ConnectionURL"
value="jdbc:derby://localhost:1527/hibernate;create=true" />
<property name="openjpa.ConnectionUserName" value="hibernate" />
<property name="openjpa.ConnectionPassword" value="hibernate" />
<property name="openjpa.jdbc.SynchronizeMappings"
value="buildSchema(SchemaAction='drop,add,deleteTableContents',IgnoreErrors=true)"
/>
<property name="openjpa.Log" value="DefaultLevel=WARN,SQL=TRACE" />
<property name="openjpa.jdbc.DBDictionary"
value="derby(NextSequenceQuery=VALUES NEXT VALUE FOR {0})"/>
</properties>
</persistence-unit>
</persistence>
{code}
Such configuration produses the following exception:
Exception in thread "main" java.lang.LinkageError: loader (instance of
sun/misc/Launcher$AppClassLoader): attempted duplicate class definition for
name: "org/apache/openjpa/jdbc/identifier/DBIdentifier$DBIdentifierType"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at
org.apache.openjpa.jdbc.sql.DBDictionary.configureNamingRules(DBDictionary.java:506)
at
org.apache.openjpa.jdbc.sql.DBDictionary.setConfiguration(DBDictionary.java:4633)
at
org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:486)
at
org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:443)
at
org.apache.openjpa.jdbc.sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:199)
at
org.apache.openjpa.jdbc.sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:66)
at
org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:579)
at
org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1510)
at
org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:518)
at
org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:443)
at
org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:104)
at
org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
at
org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
at
org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:968)
at
org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:959)
at
org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:638)
at
org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:203)
at
org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:156)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:227)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:154)
at
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:60)
I have already used java 5, 6 and 7 compilers. They all give the same exception.
However, when I delete
<exclude-unlisted-classes>false</exclude-unlisted-classes> element and declare
classes explicitly (using <class> elements) everything works like a charm.
I am using Open JPA in Java SE environment. I have 'openjpa-all-2.2.0.jar' in
my class and build paths.
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