I have a set of persistent classes, defined by JPA annotations. My persistence XML from META-INF looks like
<?xml version="1.0" encoding="UTF-8"?>
<persistence
version="1.0"
xmlns:p="http://java.sun.com/xml/ns/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 http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
>
<persistence-unit name="IdentityManagerPOJO" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
</persistence-unit>
</persistence>
<path id="jpatoolslib">
<path location="../3rdParty/Hibernate/Tool/org.hibernate.eclipse.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/bsh-core-2.0b4.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/tools/bsh-2.0b1.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/tools/freemarker.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/tools/hibernate-tools.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/tools/jtidy-r8-20060801.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/antlr-2.7.6.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/asm-attrs.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/asm.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/c3p0-0.9.1.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/cglib-2.1.3.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/commons-collections-2.1.1.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/commons-logging-1.0.4.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/concurrent-1.3.2.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/connector.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/dom4j-1.6.1.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/ehcache-1.2.3.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/hibernate3.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jaas.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/javassist.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jboss-cache.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jboss-common.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jboss-jmx.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jboss-system.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jdbc2_0-stdext.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jgroups-2.2.8.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/jta.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/log4j-1.2.15.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/oscache-2.1.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/proxool-0.8.3.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/hibernate/swarmcache-1.0rc2.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/annotations/ejb3-persistence.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/annotations/hibernate-annotations.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/annotations/hibernate-commons-annotations.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/annotations/hibernate-entitymanager.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/annotations/hibernate-search.jar" />
<path location="../3rdParty/Hibernate/Tool/lib/annotations/lucene-core-2.2.0.jar" />
<path location="./lib/POJODeploymentDeps/ojdbc14.jar" />
<path location="./lib/POJODeploymentDeps/mysql-connector-java-5.1.5-bin.jar" />
<path location="./lib/POJODeploymentDeps/jtds-1.2.2.jar" />
</path>
<taskdef name="hibernatetool"
classname="org.hibernate.tool.ant.HibernateToolTask"
classpathref="jpatoolslib"
/>
<target name="create-schema">
<hibernatetool destdir="./database/ddl/SQLServer">
<classpath>
<path path="./dist/POJO/lib/" />
</classpath>
<property key="hibernate.connection.driver_class" value="net.sourceforge.jtds.jdbc.Driver"/>
<property key="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect"/>
<!-- persistenceunit="IdentityManagerPOJO" -->
<jpaconfiguration />
<!-- list exporters here -->
<hbm2ddl export="false"
update="false"
drop="false"
create="true"
outputfilename="sqlserver.ddl"
delimiter=";"
format="false"
haltonerror="true"
/>
</hibernatetool>
</target>
I'm using only the classes bundled with the recent HibernateTools package (3.2.4.GA) plus a number of jars for database-specific dialect etc.
Now, when I run the create-schema task, the following Exception is raised.
[hibernatetool] An exception occurred while running exporter #2:hbm2ddl (Generates database schema)
[hibernatetool] To get the full stack trace run ant with -verbose
[hibernatetool] Problems in creating a configuration for JPA. Have you remembered to add hibernate EntityManager jars to the classpath ?
[hibernatetool] java.lang.reflect.InvocationTargetException
[hibernatetool] javax.persistence.PersistenceException: [PersistenceUnit: IdentityManagerPOJO] class or package not found
[hibernatetool] java.lang.ClassNotFoundException: com.entity.DataBlockCbeff
[hibernatetool] A class were not found in the classpath of the Ant task.
[hibernatetool] Ensure that the classpath contains the classes needed for Hibernate and your code are in the classpath.
BUILD FAILED
C:\data\svndata\ABIS7\IM20\IMInterface\build\ddlBuild.xml:67: Problems in creating a configuration for JPA. Have you remembered to add hibernate EntityManager jars to the classpath ?
at org.hibernate.tool.ant.JPAConfigurationTask.createConfiguration(JPAConfigurationTask.java:57)
at org.hibernate.tool.ant.ConfigurationTask.getConfiguration(ConfigurationTask.java:54)
at org.hibernate.tool.ant.HibernateToolTask.getConfiguration(HibernateToolTask.java:302)
at org.hibernate.tool.ant.Hbm2DDLExporterTask.createExporter(Hbm2DDLExporterTask.java:51)
at org.hibernate.tool.ant.ExporterTask.execute(ExporterTask.java:39)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:186)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
Caused by: java.lang.reflect.InvocationTargetException
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:597)
at org.hibernate.tool.ant.JPAConfigurationTask.createConfiguration(JPAConfigurationTask.java:43)
... 20 more
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: IdentityManagerPOJO] class or package not found
at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1125)
at org.hibernate.ejb.Ejb3Configuration.addClassesToSessionFactory(Ejb3Configuration.java:905)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:792)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:186)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:246)
... 25 more
Caused by: java.lang.ClassNotFoundException: com.entity.DataBlockCbeff
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1383)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1324)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1072)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:112)
at org.hibernate.ejb.Ejb3Configuration.classForName(Ejb3Configuration.java:1041)
at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1113)
... 29 more
--- Nested Exception ---
java.lang.reflect.InvocationTargetException
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:597)
at org.hibernate.tool.ant.JPAConfigurationTask.createConfiguration(JPAConfigurationTask.java:43)
at org.hibernate.tool.ant.ConfigurationTask.getConfiguration(ConfigurationTask.java:54)
at org.hibernate.tool.ant.HibernateToolTask.getConfiguration(HibernateToolTask.java:302)
at org.hibernate.tool.ant.Hbm2DDLExporterTask.createExporter(Hbm2DDLExporterTask.java:51)
at org.hibernate.tool.ant.ExporterTask.execute(ExporterTask.java:39)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:186)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: IdentityManagerPOJO] class or package not found
at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1125)
at org.hibernate.ejb.Ejb3Configuration.addClassesToSessionFactory(Ejb3Configuration.java:905)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:792)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:186)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:246)
... 25 more
Caused by: java.lang.ClassNotFoundException: com.entity.DataBlockCbeff
at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1383)
at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1324)
at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1072)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:112)
at org.hibernate.ejb.Ejb3Configuration.classForName(Ejb3Configuration.java:1041)
at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1113)
... 29 more
Total time: 907 milliseconds
Obviously, the hibernate tool does not find the class com.entity.DataBlockCbeff, but I do not understand why. DataBlockCbeff is one of the annotated entity classes. Since the program finds out the persistence unit name (IdentityManagerPOJO) which I have not explcitly specified, it must also find the persistence.xml file. And I have verified that it really uses the intended persistence.xml file by introducing some XML syntax error and seeing what happens. So I can expect that the tool find further classes that are at the same class path root. After all, since the name DataBlockCbeff is not specified anywhere and the tool tries to load the class, it must have already accessed its annotations and hence the class itself. This is really strange. I have no clue what I could be doing wrong here and I would appreciate any comments.
I'm not sure if this could matter, but the class in question has-been build time instrumented using org.hibernate.tool.instrument.cglib.InstrumentTask.
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