Hi,
I am using <hbm2ddl> ant task for exporting DDL schema. My ant script worked fine for Hibernate 3.6 and Hibernate Tools 3.x.
After upgading to Hibernate 4 and Hibernate Tools 4 I get the following exception:
[hibernatetool] 2012-10-09 15:54:32,327 INFO [Version.<clinit>(15)] : Hibernate Tools 4.0.0
[hibernatetool] 2012-10-09 15:54:32,390 WARN [ConnectionProviderInitiator.initiateService(143)] : HHH000181: No appropriate connection provider encountered, assuming application will be supplying connections
[hibernatetool] An exception occurred while running exporter #2:hbm2ddl (Generates database schema)
[hibernatetool] To get the full stack trace run ant with -verbose
[hibernatetool] org.hibernate.HibernateException: Dialect class not found: com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect
[hibernatetool] org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect]
[hibernatetool] java.lang.ClassNotFoundException: Could not load requested class : com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect
[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:\Projekte\MyProduct\workspace-sts-trunk\MyProductWeb-dev\build.xml:143: org.hibernate.HibernateException: Dialect class not found: com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect
at org.hibernate.tool.ant.HibernateToolTask.reportException(HibernateToolTask.java:226)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:189)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.GeneratedMethodAccessor4.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:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:392)
at org.apache.tools.ant.Target.performTasks(Target.java:413)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.eclipse.ant.internal.launching.remote.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.eclipse.ant.internal.launching.remote.InternalAntRunner.run(InternalAntRunner.java:424)
at org.eclipse.ant.internal.launching.remote.InternalAntRunner.main(InternalAntRunner.java:138)
Caused by: org.hibernate.HibernateException: Dialect class not found: com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:76)
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:64)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:174)
at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)
at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:113)
at org.hibernate.tool.hbm2x.Hbm2DDLExporter.doStart(Hbm2DDLExporter.java:164)
at org.hibernate.tool.hbm2x.AbstractExporter.start(AbstractExporter.java:95)
at org.hibernate.tool.ant.ExporterTask.execute(ExporterTask.java:40)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:186)
... 15 more
Caused by: org.hibernate.service.classloading.spi.ClassLoadingException: Unable to load class [com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect]
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:141)
at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:73)
... 25 more
Caused by: java.lang.ClassNotFoundException: Could not load requested class : com.mycompany.myproduct.integration.dao.hibernate.Oracle10nDialect
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl$1.findClass(ClassLoaderServiceImpl.java:99)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.hibernate.service.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:138)
... 26 more
Here is the part of my ant script:
<target name="schemaexport" depends="clean, compile">
<taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask" classpathref="build.classpath" />
<mkdir dir="${target.dir}/sql"/>
<hibernatetool destdir="${target.dir}/sql">
<classpath>
<path location="${build.dir}"/>
</classpath>
<configuration configurationfile="${build.dir}/hibernate.cfg.xml"/>
<hbm2ddl
export="false"
drop="true"
outputfilename="DB-create.sql"
delimiter=";"
format="true"
/>
</hibernatetool>
</target>
The build.dir includes all class files, including the Oracle 10 dialect.
Did something change in the configuration of hbm2dll in Hibernate Tools 4? Or is this a bug in Hibernate Tools 4?