Hello,

My Setup :
1> Eclipse Java EE IDE for Web Developers. ( Version: Indigo Service Release 2 Build id: 20120216-1857 )
contains Hibernate Tools 3.4.0.v20120504-2121-H72-Beta3 org.hibernate.eclipse.feature.feature.group JBoss by Red Hat

I had downloaded eclipse indigo mentioned above and had got jboss tools installed over it from update site (http://download.jboss.org/jbosstools/up ... nt/indigo/)
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I had created Hibernate Console Configuration and could see the tables in eclipse which were created in postgreSQL database.
Now i wish to generate the .java, .hbm.xml, DAO files using Hibernate Code generation Configurations.
When i run the code generation, it gives me following error.

java.lang.IllegalStateException: zip file closed
at java.util.zip.ZipFile.ensureOpen(Unknown Source)
at java.util.zip.ZipFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getEntry(Unknown Source)
at java.util.jar.JarFile.getJarEntry(Unknown Source)
at sun.misc.URLClassPath$JarLoader.getResource(Unknown Source)
at sun.misc.URLClassPath.getResource(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at org.jboss.tools.hibernate3_6.HibernateExtension3_6$5$1.findClass(HibernateExtension3_6.java:157)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jboss.tools.hibernate3_6.HibernateExtension3_6$5$1.loadClass(HibernateExtension3_6.java:168)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jboss.tools.hibernate3_6.HibernateExtension3_6$5$1.loadClass(HibernateExtension3_6.java:176)
at org.postgresql.Driver.getDefaultProperties(Driver.java:85)
at org.postgresql.Driver.connect(Driver.java:231)
at org.jboss.tools.hibernate3_6.FakeDelegatingDriver.connect(FakeDelegatingDriver.java:31)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:133)
at org.hibernate.cfg.reveng.dialect.AbstractMetaDataDialect.getConnection(AbstractMetaDataDialect.java:121)
at org.hibernate.cfg.reveng.dialect.AbstractMetaDataDialect.getMetaData(AbstractMetaDataDialect.java:60)
at org.hibernate.cfg.reveng.dialect.AbstractMetaDataDialect.caseForSearch(AbstractMetaDataDialect.java:163)
at org.hibernate.cfg.reveng.dialect.JDBCMetaDataDialect.getTables(JDBCMetaDataDialect.java:22)
at org.hibernate.cfg.reveng.JDBCReader.processTables(JDBCReader.java:476)
at org.hibernate.cfg.reveng.JDBCReader.readDatabaseSchema(JDBCReader.java:74)
at org.hibernate.cfg.reveng.JDBCReader.readDatabaseSchema(JDBCReader.java:860)
at org.hibernate.cfg.JDBCBinder.readDatabaseSchema(JDBCBinder.java:120)
at org.hibernate.cfg.JDBCBinder.readFromDatabase(JDBCBinder.java:93)
at org.hibernate.cfg.JDBCMetaDataConfiguration.readFromJDBC(JDBCMetaDataConfiguration.java:43)
at org.jboss.tools.hibernate3_6.console.ConsoleExtension3_6$3.execute(ConsoleExtension3_6.java:271)
at org.hibernate.console.execution.DefaultExecutionContext.execute(DefaultExecutionContext.java:63)
at org.jboss.tools.hibernate3_6.HibernateExtension3_6.execute(HibernateExtension3_6.java:201)
at org.jboss.tools.hibernate3_6.console.ConsoleExtension3_6.buildConfiguration(ConsoleExtension3_6.java:239)
at org.jboss.tools.hibernate3_6.console.ConsoleExtension3_6.runExporters(ConsoleExtension3_6.java:169)
at org.jboss.tools.hibernate3_6.console.ConsoleExtension3_6.launchExporters(ConsoleExtension3_6.java:126)
at org.hibernate.eclipse.launch.CodeGenerationLaunchDelegate.launch(CodeGenerationLaunchDelegate.java:270)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:854)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:937)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1141)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Session Data
eclipse.buildId=M20120208-0800
java.version=1.6.0_32
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_IN
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product

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Please suggest possible solutions to this problem.

Thanks.
Vilpesh

Hi, i have exactly the same problem. I found some answers on the internet telling to renitialize Eclipse or change to jdk7 but nothing work for me.
Anyone can help?

I had tried restarting Eclipse Indigo with JBoss Tools but could not get rid of the problem.
So,I then have downloaded Eclipse Helios (Java EE IDE for Web Developers) and installed appropriate JBoss Tools.
Now i don't get this exception since i downgraded to lower version.

Hope that this is fixed sometime in future.

The Hibernate Tools project has been seeing zero development activity for months now.
Today's advice would be to assume the project comatose or dead, and plan accordingly.