Hi,
I have a bridging table (for a M-N relation). The table consist of two
integer id's.
To join two tables I create a new object for this table and after adding the
respective id's I call the save() method.
The problem is that the generated code in the buildCriteria method looks
like this:
Criteria criteria = new Criteria();
if ( !obj.isNew() )
criteria.add( ERESOURCE_ID, obj.getEresourceId() );
if ( !obj.isNew() )
criteria.add( RESOURCE_FIELD_ID, obj.getResourceFieldId() );
criteria.add( AVALUE, obj.getAvalue() );
return criteria;
Therefore none of the new id's is added to the criteria object and I get a
database exception.
If I remove the primary key - the table now has no primary key and only two
integer values. I get:
Exception: java.lang.NullPointerException
Stack Trace follows:
java.lang.NullPointerException
at org.apache.turbine.om.peer.BasePeer.doInsert(BasePeer.java:718)
at org.apache.turbine.om.peer.BasePeer.doInsert(BasePeer.java:614)
at
za.co.opticode.infoportal.db.peer.FieldValuePeer.doInsert(FieldValuePeer.jav
a:46)
at
za.co.opticode.infoportal.db.peer.FieldValuePeer.doInsert(FieldValuePeer.jav
a:186)
at
za.co.opticode.infoportal.om.peer.EresourcePeer.setEresourceFields(Eresource
Peer.java:156)
It seems that if a table has no Primary keys that the BasePeer code stops
working. Any ideas how I can get my bridging table to work?
~ Leon
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