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chuck113
 Post subject: hbm2hbmxml ExporterException for Set<Integer>
PostPosted: Mon Jul 14, 2008 9:55 am 
Newbie

Joined: Mon Jul 14, 2008 9:04 am
Posts: 1
I'm using tools version 3.2.2 Beta.

I'm trying to generate Hibernate mapping files from classes with mapping annotations and an getting an exception when a class has a Set of Integers. My class is:

Code:
@Entity
public class IntegerHolder {

   @Id @GeneratedValue
   private Long id = null;
   
   @org.hibernate.annotations.CollectionOfElements
   @JoinTable(
      name = "HOLDER_INT",
      joinColumns = @JoinColumn(name = "HOLDER_ID")
                     
   )
   private Set<Integer> ints = null;

   // ...
}


Which works fine when persisting. When running it through hbm2hbmxml an exception occours (full trace and end of post):

Code:
org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: ck.IntegerHolder with template hbm/hibernate-mapping.hbm.ftl

The root cause appears to be:

Code:
Caused by: freemarker.core.InvalidReferenceException: Expression property.getValue().getElement().getReferencedEntityName is undefined on line 24, column 41 in hbm/set.hbm.ftl.


It looks like the template can't work out the type of my Set from the code, is this correct? How should I make it work?

Thanks


Full trace:
Code:
[hibernatetool] org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: ck.IntegerHolder with template hbm/hibernate-mapping.hbm.ftl
[hibernatetool] freemarker.core.InvalidReferenceException: Expression property.getValue().getElement().getReferencedEntityName is undefined on line 24, column 41 in hbm/set.hbm.ftl.

BUILD FAILED
C:\eclipse\eclipse-3-3\workspace\com.enigmatec.ems.platform-hibernate-exp\generate-xml-mappings-build.xml:22: org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: ck.IntegerHolder with template hbm/hibernate-mapping.hbm.ftl
   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:288)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:585)
   at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
   at org.apache.tools.ant.Task.perform(Task.java:348)
   at org.apache.tools.ant.Target.execute(Target.java:357)
   at org.apache.tools.ant.Target.performTasks(Target.java:385)
   at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
   at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
   at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
   at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
   at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
   at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
   at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
Caused by: org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: ck.IntegerHolder with template hbm/hibernate-mapping.hbm.ftl
   at org.hibernate.tool.hbm2x.TemplateHelper.processTemplate(TemplateHelper.java:261)
   at org.hibernate.tool.hbm2x.TemplateProducer.produceToString(TemplateProducer.java:67)
   at org.hibernate.tool.hbm2x.TemplateProducer.produce(TemplateProducer.java:28)
   at org.hibernate.tool.hbm2x.TemplateProducer.produce(TemplateProducer.java:103)
   at org.hibernate.tool.hbm2x.GenericExporter.exportPOJO(GenericExporter.java:148)
   at org.hibernate.tool.hbm2x.GenericExporter.exportPersistentClass(GenericExporter.java:137)
   at org.hibernate.tool.hbm2x.GenericExporter$2.process(GenericExporter.java:43)
   at org.hibernate.tool.hbm2x.GenericExporter.doStart(GenericExporter.java:128)
   at org.hibernate.tool.hbm2x.HibernateMappingExporter.doStart(HibernateMappingExporter.java:34)
   at org.hibernate.tool.hbm2x.AbstractExporter.start(AbstractExporter.java:95)
   at org.hibernate.tool.ant.ExporterTask.execute(ExporterTask.java:40)
   at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:186)
   ... 16 more
Caused by: freemarker.core.InvalidReferenceException: Expression property.getValue().getElement().getReferencedEntityName is undefined on line 24, column 41 in hbm/set.hbm.ftl.
   at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
   at freemarker.core.TemplateObject.invalidTypeException(TemplateObject.java:134)
   at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:114)
   at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
   at freemarker.core.Expression.getStringValue(Expression.java:93)
   at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.IfBlock.accept(IfBlock.java:82)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.Environment.include(Environment.java:1375)
   at freemarker.core.Include.accept(Include.java:155)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:160)
   at freemarker.core.Environment.visit(Environment.java:351)
   at freemarker.core.IteratorBlock.accept(IteratorBlock.java:95)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.Environment.include(Environment.java:1375)
   at freemarker.core.Include.accept(Include.java:155)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.Environment.process(Environment.java:176)
   at freemarker.template.Template.process(Template.java:232)
   at org.hibernate.tool.hbm2x.TemplateHelper.processTemplate(TemplateHelper.java:255)
   ... 27 more
--- Nested Exception ---
org.hibernate.tool.hbm2x.ExporterException: Error while processing Entity: ck.IntegerHolder with template hbm/hibernate-mapping.hbm.ftl
   at org.hibernate.tool.hbm2x.TemplateHelper.processTemplate(TemplateHelper.java:261)
   at org.hibernate.tool.hbm2x.TemplateProducer.produceToString(TemplateProducer.java:67)
   at org.hibernate.tool.hbm2x.TemplateProducer.produce(TemplateProducer.java:28)
   at org.hibernate.tool.hbm2x.TemplateProducer.produce(TemplateProducer.java:103)
   at org.hibernate.tool.hbm2x.GenericExporter.exportPOJO(GenericExporter.java:148)
   at org.hibernate.tool.hbm2x.GenericExporter.exportPersistentClass(GenericExporter.java:137)
   at org.hibernate.tool.hbm2x.GenericExporter$2.process(GenericExporter.java:43)
   at org.hibernate.tool.hbm2x.GenericExporter.doStart(GenericExporter.java:128)
   at org.hibernate.tool.hbm2x.HibernateMappingExporter.doStart(HibernateMappingExporter.java:34)
   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)
   at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:585)
   at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
   at org.apache.tools.ant.Task.perform(Task.java:348)
   at org.apache.tools.ant.Target.execute(Target.java:357)
   at org.apache.tools.ant.Target.performTasks(Target.java:385)
   at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
   at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
   at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
   at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
   at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
   at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
   at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
Caused by: freemarker.core.InvalidReferenceException: Expression property.getValue().getElement().getReferencedEntityName is undefined on line 24, column 41 in hbm/set.hbm.ftl.
   at freemarker.core.TemplateObject.assertNonNull(TemplateObject.java:124)
   at freemarker.core.TemplateObject.invalidTypeException(TemplateObject.java:134)
   at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:114)
   at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
   at freemarker.core.Expression.getStringValue(Expression.java:93)
   at freemarker.core.DollarVariable.accept(DollarVariable.java:76)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.IfBlock.accept(IfBlock.java:82)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.Environment.include(Environment.java:1375)
   at freemarker.core.Include.accept(Include.java:155)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:160)
   at freemarker.core.Environment.visit(Environment.java:351)
   at freemarker.core.IteratorBlock.accept(IteratorBlock.java:95)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.Environment.include(Environment.java:1375)
   at freemarker.core.Include.accept(Include.java:155)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.MixedContent.accept(MixedContent.java:92)
   at freemarker.core.Environment.visit(Environment.java:196)
   at freemarker.core.Environment.process(Environment.java:176)
   at freemarker.template.Template.process(Template.java:232)
   at org.hibernate.tool.hbm2x.TemplateHelper.processTemplate(TemplateHelper.java:255)
   ... 27 more
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Thunderstorm
 Post subject:
PostPosted: Wed Aug 06, 2008 5:36 am 
Newbie

Joined: Thu Jul 05, 2007 6:09 am
Posts: 3
Having exactly the same issue here. Is there a workaround available for this behaviour?

Code:
   @CollectionOfElements
   @JoinTable(
      name="my_join_table",
           joinColumns=@JoinColumn(name="element_id")
   )


When deleting these lines the hbm.xml files get generated correctly.

I put this issue in Jira
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