7:36 a.m.
UserCollectionType: add support for ParameterizedTypes and typedef'ed types to the
collection-type attribute for a collection mapping
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Key: HHH-2336
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2336
Project: Hibernate3
Type: Improvement
Components: core
Versions: 3.2.1
Environment: Hibernate 3.2.1, independent of database platform
Reporter: Holger Brands
Attachments: usercollectionwithparameters.zip
Currently, it's required to specify a class name as value for the collection-type
attribute of a collection mapping.
Therefore you can't use a typedef'ed type as collection-type and consequently you
can't pass parameters to a custom collection type.
Please enhance the support for custom collection types such that you can do something like
this:
<typedef name="MyEventListType"
class="ca.odell.glazedlists.hibernate.EventListType">
<param name="category">Test</param>
</typedef>
<class name="User" table="`USERS`">
<id name="userName" column="USERNAME"/>
<!-- mapping a value collection -->
<list name="nickNames" table="USER_NICKNAMES"
collection-type="MyEventListType">
<key column="USER_ID"/>
<list-index column="DISPLAY_ORDER"/>
<element column="NAME" type="string"
length="50"/>
</list>
</class>
Currently this mapping fails with this exception:
org.hibernate.MappingException: user colllection type class not found: MyEventListType
at org.hibernate.type.TypeFactory.customCollection(TypeFactory.java:267)
at org.hibernate.mapping.Collection.getCollectionType(Collection.java:348)
at org.hibernate.mapping.Collection.getType(Collection.java:340)
at org.hibernate.tuple.PropertyFactory.buildStandardProperty(PropertyFactory.java:120)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:163)
at
org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:425)
at
org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:109)
at
org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:226)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1291)
at
ca.odell.glazedlists.hibernate.AbstractHibernateTestCase.buildSessionFactory(AbstractHibernateTestCase.java:133)
at
ca.odell.glazedlists.hibernate.AbstractHibernateTestCase.setUp(AbstractHibernateTestCase.java:167)
at junit.framework.TestCase.runBare(TestCase.java:125)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.lang.ClassNotFoundException: MyEventListType
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:100)
at org.hibernate.type.TypeFactory.customCollection(TypeFactory.java:264)
... 24 more
Also see the coresponding forum entry for details:
http://forum.hibernate.org/viewtopic.php?t=969043
Attached is a test case that demonstrates this problem.
It's a modified copy of the existing "usercollection" test case in the
Hibernate 3.2.1 distribution.
Just copy the directory into your org.hibernate.test directory and include it in your
testsuite.
As I'm not familiar enough with the internals of Hibernate, I have no patch at hand,
sorry.
Resolving this issue would enhance mapping flexibility for custom collection types because
you
would be able to pass parameters as it's possible right now for UserTypes and
CompositeUserTypes.
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