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Hello,
I got problems in hbm2java with many-to-many associations. The Mapping are added hereafter. Using hbm2ddl everything works as exspected but with hbm2java I get an error indicating ClassCastExceptions org.hibernate.mapping.ManyToOne ... which I do not use explicitely.
I used an extented version with lazy="true" and cascade="save-update" but the error remains the same.
Best regards
Oliver-Arne
Hibernate version:
From Hibernate-Tools 3.1 alpha 5
Mapping documents:
Code:
<hibernate-mapping package="de.oc.shipment.entities">
<class name="N" table="N" lazy="true">
<id name="id" type="long" column="N_ID">
<generator class="native"/>
</id>
<set
name="ms"
table="M_N">
<key column="N_ID"/>
<many-to-many
class="de.oc.shipment.entities.M"
column="M_ID">
</many-to-many>
</set>
</class>
</hibernate-mapping>
and
Code:
<hibernate-mapping package="de.oc.shipment.entities">
<class name="M" table="M" lazy="true">
<id name="id" type="long" column="M_ID">
<generator class="native"/>
</id>
<set
name="ns"
table="M_N"
inverse="true">
<key column="M_ID"/>
<many-to-many
class="de.oc.shipment.entities.N"
column="N_ID">
</many-to-many>
</set>
</class>
</hibernate-mapping>
Full stack trace of any exception that occurs:Extracted from calling ant -debug hbm2java
Code:
Finding class org.apache.velocity.util.introspection.UberspectImpl$VelGetterImpl
Loaded from C:\Dokumente und Einstellungen\oah\workspace\Cargo-Shipment\lib\velocity-1.4.jar org/apache/velocity/util/introspection/UberspectImpl$VelGetterImpl.class
Class org.apache.velocity.util.introspection.UberspectImpl$VelGetterImpl loaded from ant loader (parentFirst)
[hibernatetool] java.lang.ClassCastException: org.hibernate.mapping.ManyToOne
[hibernatetool] at org.hibernate.tool.hbm2x.Cfg2JavaTool.getRawTypeName(Cfg2JavaTool.java:572)
[hibernatetool] at org.hibernate.tool.hbm2x.Cfg2JavaTool.getJavaTypeName(Cfg2JavaTool.java:488)
[hibernatetool] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[hibernatetool] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[hibernatetool] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[hibernatetool] at java.lang.reflect.Method.invoke(Method.java:585)
[hibernatetool] at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:267)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:197)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:175)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:327)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:128)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:175)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:220)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:55)
[hibernatetool] at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:166)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:55)
[hibernatetool] at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:70)
[hibernatetool] at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
[hibernatetool] at org.apache.velocity.Template.merge(Template.java:256)
[hibernatetool] at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:450)
[hibernatetool] at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:419)
[hibernatetool] at org.hibernate.tool.hbm2x.TemplateHelper.processTemplate(TemplateHelper.java:82)
[hibernatetool] at org.hibernate.tool.hbm2x.POJOExporter.runVelocity(POJOExporter.java:79)
[hibernatetool] at org.hibernate.tool.hbm2x.POJOExporter.exportPersistentClass(POJOExporter.java:61)
[hibernatetool] at org.hibernate.tool.hbm2x.POJOExporter.start(POJOExporter.java:111)
[hibernatetool] at org.hibernate.tool.ant.GeneratorTask.execute(GeneratorTask.java:32)
[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.executeTarget(Project.java:1214)
[hibernatetool] at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
[hibernatetool] at org.apache.tools.ant.Main.runBuild(Main.java:673)
[hibernatetool] at org.apache.tools.ant.Main.startAnt(Main.java:188)
[hibernatetool] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
[hibernatetool] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)
[hibernatetool] 16:42:07,386 ERROR template:94 - Method getJavaTypeName threw exception for reference $c2j in template pojo/javaclass.vm at [37,55]
[hibernatetool] 16:42:07,386 ERROR template:94 - Method getJavaTypeName threw exception for reference $c2j in template pojo/javaclass.vm at [37,36]
Name and version of the database you are using:Oracle 10g R1
[/code]
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