Bug 152830 Need model's support to add jar files
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
getTagByPropertyType( propDefn ), propDefn
									.getName( ), cdata );
			}
			writer.endElement( ); // end ��ref-entry��
		}
		writer.endElement( ); // end ��Overridden-values��
	}
	/*
	 * (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, DataSet.RESULT_SET_PROP );
		writeSimplePropertyList( obj, JointDataSet.DATA_SETS_PROP );
		writeStructureList( obj, JointDataSet.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