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alphamanic
 Post subject: Versioning in a subclass
PostPosted: Thu Jun 12, 2008 12:14 pm 
Newbie

Joined: Thu Jun 12, 2008 11:50 am
Posts: 2
Is there any way to apply versioning concepts to a subclass. We have 3rd party application that uses hibernate which I can extend from but cannot modify (mapping files are hidden away in a jar file). In order to extend I've created the below mapping file:
Code:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<subclass name="customepackaging.versioningTest" extends="XXXXXXXXXXXXXXXXXXXXXXXX" discriminator-value="myVersioning">
<join table="CustomVersioning">
<key>
   <column name="ID"/>
</key>
</join>
<version name="myVersioning" column="version" type="int"/>
</subclass>
</hibernate-mapping>


the above file generates the following exception:
Code:
Caused by: org.xml.sax.SAXParseException: The content of element type "subclass" must match "(meta*,tuplizer*,synchronize*,(property|many-to-one|one-to-one|component|dynamic-component|any|map|set|list|bag|idbag|array|primitive-array)*,join*,subclass*,loader?,sql-insert?,sql-update?,sql-delete?,resultset*,(query|sql-query)*)".
   at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown 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.handleEndElement(Unknown Source)
   at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(Unknown Source)
   at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
   at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
   at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
   at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
   at org.apache.xerces.parsers.XML11Configuration.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:465)
   at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:422)


Is there any way to apply versioning on my subclass without modifying the actual 3rd party hbm file where the subclass extends from?

Many thanks!
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edbras
 Post subject:
PostPosted: Thu Jun 12, 2008 5:05 pm 
Regular
Regular

Joined: Thu Aug 28, 2003 2:42 pm
Posts: 77
Location: The Netherlands
Why don't you implement it yourself ?
Have a look at the documentation or better even the hibernate bible. The versioning has many options these days
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alphamanic
 Post subject:
PostPosted: Fri Jun 13, 2008 4:57 am 
Newbie

Joined: Thu Jun 12, 2008 11:50 am
Posts: 2
I did look at the documentation before I posted this issue here. The problem is that I don't have access to the src or the hbm files where the actual classes are kept (they are jared up as 3rd party app).

All the documentation/tutorials that I looked at suggested either using a class file or hbm. I can put a tigger in database and let the trigger control the versioning but it's not very elagent.

All I can do is to extend the base class and provide mapping but then I can't use VERSION element.

Is there any other way?
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