[news.eclipse.rt.eclipselink] Re: MergeChangeSetCommand NullPointerExcep

[amodmudholkar@xxxxxxxxx ( arm)]

Hi James,

Thanks a lot for your reply.

I didn't include full mapping for 1:m relationshoip. Parent descriptor 
uses Map container policy for containing child collection.
Is it a bug related to Map container policy? 

Here are the mappings.

Parent Descriptor

DirectToFieldMapping idMapping = new DirectToFieldMapping();
idMapping.setAttributeName("id");
idMapping.setFieldName("t_Parent.id");
descriptor.addMapping(idMapping);

OneToManyMapping childsMapping = new OneToManyMapping();
childsMapping.setAttributeName("childs");
childsMapping.setReferenceClass(Child.class);
childsMapping.setRelationshipPartnerAttributeName("parent");
childsMapping.privateOwnedRelationship();
childsMapping.useBasicIndirection();
childsMapping.useMapClass(java.util.HashMap.class, "getAnotherid"); 
childsMapping.addTargetForeignKeyFieldName("t_Child.parent_id", 
"t_Parent.id");
descriptor.addMapping(childsMapping);


Child Descriptor

DirectToFieldMapping idMapping = new DirectToFieldMapping();
idMapping.setAttributeName("id");
idMapping.setFieldName("t_Child.id");
descriptor.addMapping(idMapping);

DirectToFieldMapping anotheridMapping = new DirectToFieldMapping();
anotheridMapping.setAttributeName("anotherid");
anotheridMapping.setFieldName("t_Child.anotherid");
descriptor.addMapping(anotheridMapping);
	
DirectToFieldMapping parentIdMapping = new DirectToFieldMapping();
parentIdMapping.setAttributeName("parentId");
parentIdMapping.setFieldName("t_Child.parent_id");
parentIdMapping.readOnly();
descriptor.addMapping(parentIdMapping);
	
OneToOneMapping parentMapping = new OneToOneMapping();
parentMapping.setAttributeName("parent");
parentMapping.setReferenceClass(Parent.class);
parentMapping.setRelationshipPartnerAttributeName("childs");
parentMapping.useBasicIndirection();
parentMapping.addForeignKeyFieldName("t_Child.parent_id", "t_Parent.id");
descriptor.addMapping(parentMapping);

Thanks a lot for any help.

Regards