Hibernate version: 3.1beta3
Hibernate Annotations version: 3.1beta5
Hibernate Tools version: 3.1.0alpha5
Database version: MySQL 5.0.12

I've persistent classes with Hibernate Annotations. The classes are declared in hibernate.cfg.xml, and everything works fine.

Now, I want to generate DDL statements using Ant and <hbm2ddl> and get an exception (see below). Any hint is appreciated!

Extract of build.xml for Ant:
<taskdef name="hibernatetool"
classname="org.hibernate.tool.ant.HibernateToolTask"
classpathref="hibernateToolTask.classpath"/>

<hibernatetool destdir="${gen.dir}">
<annotationconfiguration propertyFile="${hibernate.properties}"
configurationfile="${hibernate.cfg.xml}"/>
<hbm2ddl drop="false" outputfilename="createTables.sql"/>
</hibernatetool>

Stack trace:
[hibernatetool] Executing Hibernate Tool with a Hibernate Annotation/EJB3 Configuration
[hibernatetool] 1. task: hbm2ddl (Generates database schema)
[hibernatetool] FATAL connection.DatasourceConnectionProvider - Could not find datasource: java:comp/env/jdbc/demodb
[hibernatetool] javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
[hibernatetool] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
[hibernatetool] at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
[hibernatetool] at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:284)
[hibernatetool] at javax.naming.InitialContext.lookup(InitialContext.java:351)
[hibernatetool] at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:52)
[hibernatetool] at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124)
[hibernatetool] at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56)
[hibernatetool] at org.hibernate.tool.hbm2ddl.SchemaExport$ProviderConnectionHelper.getConnection(SchemaExport.java:453)
[hibernatetool] at org.hibernate.tool.hbm2ddl.SchemaExport.execute(SchemaExport.java:181)
[hibernatetool] at org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:133)
[hibernatetool] at org.hibernate.tool.ant.Hbm2DDLGeneratorTask.execute(Hbm2DDLGeneratorTask.java:48)
[hibernatetool] at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:122)
[hibernatetool] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
[hibernatetool] at org.apache.tools.ant.Task.perform(Task.java:364)
[hibernatetool] at org.apache.tools.ant.Target.execute(Target.java:341)
[hibernatetool] at org.apache.tools.ant.Target.performTasks(Target.java:369)
[hibernatetool] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
[hibernatetool] at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
[hibernatetool] at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
[hibernatetool] at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[hibernatetool] at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
[hibernatetool] at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[hibernatetool] at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
[hibernatetool] ERROR hbm2ddl.SchemaExport - schema export unsuccessful
[hibernatetool] org.hibernate.HibernateException: Could not find datasource
[hibernatetool] at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:56)
[hibernatetool] at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124)
[hibernatetool] at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56)
[hibernatetool] at org.hibernate.tool.hbm2ddl.SchemaExport$ProviderConnectionHelper.getConnection(SchemaExport.java:453)
[hibernatetool] at org.hibernate.tool.hbm2ddl.SchemaExport.execute(SchemaExport.java:181)
[hibernatetool] at org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:133)
[hibernatetool] at org.hibernate.tool.ant.Hbm2DDLGeneratorTask.execute(Hbm2DDLGeneratorTask.java:48)
[hibernatetool] at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:122)
[hibernatetool] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
[hibernatetool] at org.apache.tools.ant.Task.perform(Task.java:364)
[hibernatetool] at org.apache.tools.ant.Target.execute(Target.java:341)
[hibernatetool] at org.apache.tools.ant.Target.performTasks(Target.java:369)
[hibernatetool] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
[hibernatetool] at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
[hibernatetool] at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
[hibernatetool] at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[hibernatetool] at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
[hibernatetool] at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[hibernatetool] at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
[hibernatetool] Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
[hibernatetool] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)
[hibernatetool] at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
[hibernatetool] at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:284)
[hibernatetool] at javax.naming.InitialContext.lookup(InitialContext.java:351)
[hibernatetool] at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:52)
[hibernatetool] ... 18 more

may i ask how you think hibernate ant toolsset should get a connection from the Datasource you have told it to get the connection from ? ;)

you need to use DriverconnectionManager when using from ant.

Hallo,

can you please explain how you configure this DriverconnectionManager in the ant task. I use ant inside maven build and cannot get it to export the schema to the Database. When I set export=true it overwrites the output files and they are empty after that. Where should the DB Information(url, username, password, DriverClass, Dialect) be? This information is in my configuration in the persistence.xml.

Here is my ant task in the pom.xml:

Thanks in advice.
Anton