Bug 196894 BIRT Cross tab, Cube - Time dimension enhancements
There were a couple of time dimension related enhancments planned post BIRT 2.2. This entry is to track those. This enhancments also includes - supporting additional predefined data time formats, that could make it easier to define data time dimension and use it in data items.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
{
			ContentElement tmpElement = (ContentElement) values.get( i );
			tmpElement.apply( this );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitJointDataSet(org.eclipse.birt.report.model.elements.JointDataSet)
	 */
	public void visitJointDataSet( JointDataSet obj )
	{
		writer.startElement( DesignSchemaConstants.JOINT_DATA_SET_TAG );
		super.visitJointDataSet( obj );
		writeStructureList( obj, IDataSetModel.PARAMETERS_PROP );
		writeStructureList( obj, IDataSetModel.RESULT_SET_PROP );
		writeSimplePropertyList( obj, IJointDataSetModel.DATA_SETS_PROP );
		writeStructureList( obj, IJointDataSetModel.JOIN_CONDITONS_PROP );
		writer.endElement( );
	}
	/**
	 * Visits the designer state of the oda data set.
	 * 
	 * @param obj
	 *            the oda data set to traverse
	 */
	private void writeOdaDesignerState( DesignElement obj, String propName )
	{
		OdaDesignerState designerState = (OdaDesignerState) obj
				.getLocalProperty( getModule( ), propName );