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turau
 Post subject: Pproblem with cascade="all-delete-orphan"
PostPosted: Thu Sep 11, 2003 6:13 am 
Newbie

Joined: Wed Sep 10, 2003 8:56 am
Posts: 3
I have the following problem, I perform a query and present the result
using the AbstractTableModel of Swing. This is inside a
transaction. This results in a NullPointerException with the following
stack trace:

Code:
[java] Exception occurred during event dispatching:
     [java] java.lang.NullPointerException
     [java]    at net.sf.hibernate.impl.SessionImpl.getPersister(SessionImpl.java:2309)
     [java]    at net.sf.hibernate.impl.SessionImpl.isSaved(SessionImpl.java:2346)
     [java]    at net.sf.hibernate.collection.PersistentCollection.identityRemove(PersistentCollection.java:593)
     [java]    at net.sf.hibernate.collection.PersistentCollection.identityRemoveAll(PersistentCollection.java:587)
     [java]    at net.sf.hibernate.collection.List.getOrphans(List.java:44)
     [java]    at net.sf.hibernate.impl.SessionImpl.getOrphans(SessionImpl.java:2874)
     [java]    at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:305)
     [java]    at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:341)
     [java]    at net.sf.hibernate.impl.SessionImpl.preFlushEntities(SessionImpl.java:2285)
     [java]    at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2015)
     [java]    at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2004)
     [java]    at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:57)
     [java]    at tuhh.aea.mapping.OrderHist.actionPerformed(OrderHist.java:87)



The query is over a list defined by
Code:
<list name="orderlines" inverse="true" cascade="all-delete-orphan">

and involves only a select. The thing is, if I change this to
Code:
<list name="orderlines" inverse="true" cascade="all">

everything works fine with th equery.

Does anybody have a clue what is going on based on this information?

Thanks a lot

volker turau
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gavin
 Post subject:
PostPosted: Thu Sep 11, 2003 7:08 am 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
I've not seen this one before and its in completely new functionality, so it may be a bug. (Actually, an NPE is should probably _always_ be considered a bug.)


Would you please submit a main() method to JIRA, that reproduces this exception, so I can look at it asap.

Thanks.
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robertz
 Post subject:
PostPosted: Tue Sep 16, 2003 9:43 pm 
Newbie

Joined: Wed Aug 27, 2003 9:08 pm
Posts: 5
Following is an error I got when running SchemaExport:

17/09/2003 10:55:43 net.sf.hibernate.util.XMLHelper$ErrorLogger error
SEVERE: Error parsing XML: e:\eclipse\workspace\persist\r1.0\generated\src\com\g
bst\persist\po\UserPOImpl.hbm.xml(72)
org.xml.sax.SAXParseException: Attribute "cascade" with value "all-delete-orphan
" must have a value from the list "none all save-update delete ".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Un
known Source)
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.validateDTDattribute(Unkno
wn Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.addDTDDefaultAttrsAndValid
ate(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleStartElement(Unknown
Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(Unknown Sourc
e)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unkn
own Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContent
Dispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Un
known Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.dom4j.io.SAXReader.read(SAXReader.java:339)
at org.dom4j.io.SAXReader.read(SAXReader.java:219)
at net.sf.hibernate.cfg.Configuration.addFile(Configuration.java:155)
at net.sf.hibernate.tool.hbm2ddl.SchemaExport.main(SchemaExport.java:285
)
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funkiwan
 Post subject: Update problem with cascade="all-delete-orphan"
PostPosted: Fri Oct 10, 2003 4:37 am 
Newbie

Joined: Thu Oct 09, 2003 11:07 pm
Posts: 7
I am having a similar problem to the one listed above using hibernate 2.0.3. The main difference being that I am performing an update via session.saveOrUpdate. If I change my mapping to cascade="all" the update succeeds.

Code:
<bag name="categoryList" lazy="true" inverse="true" cascade="all-delete-orphan">


Using step-through debugging, it appears that this call in SessionImpl getOrphans:
Code:
      
CollectionEntry ce = getCollectionEntry(coll); // SessionImpl.java:2873


returns a null ce (the child collection is not found) and thus the next line:

Code:
return ce.isNew() ? EMPTY : coll.getOrphans( ce.getSnapshot() ); // SessionImpl.java:2874


yields the NullPointerException.

here's the relevant stack trace:

Code:
java.lang.NullPointerException
at net.sf.hibernate.impl.SessionImpl.getOrphans(SessionImpl.java:2874)
at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:305)
at net.sf.hibernate.engine.Cascades.cascade(Cascades.java:341)
at net.sf.hibernate.impl.SessionImpl.preFlushEntities(SessionImpl.java:2285)
at net.sf.hibernate.impl.SessionImpl.flushEverything(SessionImpl.java:2015)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2004)
at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:57)
at com.mandaladesigns.apps.commerce.services.hibernate.HibernatePersistenceServiceImpl.update(HibernatePersistenceServiceImpl.java:58)


Any suggestions on next steps?

Thanks,

Jonathan.
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