10:14 a.m.
Saemmy - [https://community.jboss.org/people/saemmy2011] created the discussion
"HibernateException: Dialect class not found in HBM2DDL ant task"
To view the discussion, visit: https://community.jboss.org/message/763934#763934
--------------------------------------------------------------
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?
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11:43 a.m.
New subject: [JBoss Tools] - Re: HibernateException: Dialect class not found in HBM2DDL ant task
Max Rydahl Andersen [https://community.jboss.org/people/maxandersen] created the
discussion
"Re: HibernateException: Dialect class not found in HBM2DDL ant task"
To view the discussion, visit: https://community.jboss.org/message/763947#763947
--------------------------------------------------------------
does things work if you use the Oracle dialect bundled with Hibernate 4 ?
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3:16 a.m.
New subject: [JBoss Tools] - Re: HibernateException: Dialect class not found in HBM2DDL ant task
Saemmy - [https://community.jboss.org/people/saemmy2011] created the discussion
"Re: HibernateException: Dialect class not found in HBM2DDL ant task"
To view the discussion, visit: https://community.jboss.org/message/764035#764035
--------------------------------------------------------------
Yes, works fine with org.hibernate.dialect.Oracle10gDialect:
[hibernatetool] 2012-10-10 10:08:23,250 INFO [Version.<clinit>(15)] : Hibernate
Tools 4.0.0
[hibernatetool] 2012-10-10 10:08:23,328 WARN
[ConnectionProviderInitiator.initiateService(143)] : HHH000181: No appropriate connection
provider encountered, assuming application will be supplying connections
[hibernatetool] 2012-10-10 10:08:23,421 INFO [Dialect.<init>(122)] : HHH000400:
Using dialect: org.hibernate.dialect.Oracle10gDialect
[hibernatetool] 2012-10-10 10:08:23,437 INFO
[LobCreatorBuilder.useContextualLobCreation(85)] : HHH000422: Disabling contextual LOB
creation as connection was null
[hibernatetool] 2012-10-10 10:08:23,640 INFO [SchemaExport.execute(343)] : HHH000227:
Running hbm2ddl schema export
But with my own dialect, schema exports throws exception. The hibernate.cfg.xml and all my
mapping files could be read, but not the dialect. And both are on classpath:
[hibernatetool] Executing Hibernate Tool with a Standard Configuration
[hibernatetool] 1. task: hbm2ddl (Generates database schema)
[hibernatetool] 2012-10-10 10:11:16,421 INFO [Version.<clinit>(37)] : HCANN000001:
Hibernate Commons Annotations {4.0.1.Final}
[hibernatetool] 2012-10-10 10:11:16,453 INFO [Version.logVersion(41)] : HHH000412:
Hibernate Core {4.1.4.Final}
[hibernatetool] 2012-10-10 10:11:16,468 INFO [Environment.<clinit>(239)] :
HHH000206: hibernate.properties not found
[hibernatetool] 2012-10-10 10:11:16,468 INFO [Environment.buildBytecodeProvider(342)] :
HHH000021: Bytecode provider name : javassist
[hibernatetool] 2012-10-10 10:11:16,515 INFO [Configuration.configure(1985)] : HHH000042:
Configuring from file: hibernate.cfg.xml
[hibernatetool] 2012-10-10 10:11:16,656 INFO [Configuration.addResource(718)] :
HHH000221: Reading mappings from resource:
com/mycompany/myproduct/common/model/hbm/BusinessDivision.hbm.xml
[hibernatetool] 2012-10-10 10:11:17,000 INFO [Configuration.addResource(718)] :
HHH000221: Reading mappings from resource:
com/mycompany/myproduct/common/model/hbm/CommodityCode.hbm.xml
[hibernatetool] 2012-10-10 10:11:17,015 INFO [Configuration.addResource(718)] :
HHH000221: Reading mappings from resource:
com/mycompany/myproduct/common/model/hbm/CompanyCode.hbm.xml
[hibernatetool] 2012-10-10 10:11:17,062 INFO [Configuration.addResource(718)] :
HHH000221: Reading mappings from resource:
com/mycompany/myproduct/common/model/hbm/Country.hbm.xml
[hibernatetool] 2012-10-10 10:11:17,171 INFO [Configuration.addResource(718)] :
HHH000221: Reading mappings from resource:
com/mycompany/myproduct/common/model/hbm/Customer.hbm.xml
...
[hibernatetool] 2012-10-10 10:11:17,750 INFO [Configuration.doConfigure(2068)] :
HHH000041: Configured SessionFactory: null
[hibernatetool] 2012-10-10 10:11:18,468 INFO [Version.<clinit>(15)] : Hibernate
Tools 4.0.0
[hibernatetool] 2012-10-10 10:11:18,546 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.
--------------------------------------------------------------
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5:02 a.m.
New subject: [JBoss Tools] - Re: HibernateException: Dialect class not found in HBM2DDL ant task
Max Rydahl Andersen [https://community.jboss.org/people/maxandersen] created the
discussion
"Re: HibernateException: Dialect class not found in HBM2DDL ant task"
To view the discussion, visit: https://community.jboss.org/message/764051#764051
--------------------------------------------------------------
if you can create a small testsetup to reproduce this that would be great!
its very weird if it can actually load your user classes referenced in your hbm.xml files
but can't load your hibernate dialect...
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5:43 a.m.
New subject: [JBoss Tools] - Re: HibernateException: Dialect class not found in HBM2DDL ant task
Saemmy - [https://community.jboss.org/people/saemmy2011] created the discussion
"Re: HibernateException: Dialect class not found in HBM2DDL ant task"
To view the discussion, visit: https://community.jboss.org/message/774792#774792
--------------------------------------------------------------
Hi Max,
OK, now I have prepared a test case. Please find it in the attached ZIP file. It´s an
Eclipse project with Ant task. You will find the exception, if you run the Ant task.
I think, it´s a bug in the HBM2DLL ant task.
Best regards
Sam
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participants (2)
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Max Rydahl Andersen -
Saemmy -