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A new issue has been created in JIRA.
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View the issue:
http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-328
Here is an overview of the issue:
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Key: HB-328
Summary: NullPointerException from buildSessionFactory
Type: Bug
Status: Unassigned
Priority: Major
Project: Hibernate2
Components:
core
Versions:
2.0.2
Assignee:
Reporter: Loren Rosen
Created: Fri, 12 Sep 2003 11:52 AM
Updated: Fri, 12 Sep 2003 11:52 AM
Environment: MacOS X 10.1.5 JDK 1.3
Description:
I got a NullPointerException with this stack trace:
Exception in thread "main" java.lang.NullPointerException
at net.sf.hibernate.collection.CollectionPersister.<init>(CollectionPersister.java:191)
at net.sf.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:216)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:627)
at com.loren.Report.startHibernate(Report.java:44)
at com.loren.Report.main(Report.java:88)
Turned out the problem was a missing 'index' attribute on a 'map' in a hibernate mapping file:
<map name="documentAuthors" table="document_author" sort="com.loren.DocumentAuthorComparator" inverse="true" lazy="true">
<key column="document"/>
<index column="place" type="int"/>
<one-to-many class="com.loren.DocumentAuthor"/>
</map>
(This is the corrected version.)
Hibernate should give a specific error message in this situation.
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