Bug 197261 [2.2.1]The report that contain library xtab and set filter cannot be run
Description: [2.2.1]The report that contain library xtab and set filter cannot be run Step: 1.New a library and add a xtab 2.New a report and use the library 3.Drop the xtab from library explorer into layout 4.Set the filter on the xtab that is in report 5.Preview Actual result: It pop up an error said that the report cannot be run
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
* @see org.eclipse.birt.report.model.elements.ElementVisitor#visitTabularLevel(org.eclipse.birt.report.model.elements.olap.TabularLevel)
	 */
	public void visitTabularLevel( TabularLevel obj )
	{
		writer.startElement( DesignSchemaConstants.TABULAR_LEVEL_TAG );
		super.visitTabularLevel( obj );
		property( obj, ITabularLevelModel.COLUMN_NAME_PROP );
		property( obj, ITabularLevelModel.DISPLAY_COLUMN_NAME_PROP );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitTabularMeasure(org.eclipse.birt.report.model.elements.olap.TabularMeasure)
	 */
	public void visitTabularMeasure( TabularMeasure obj )
	{
		writer.startElement( DesignSchemaConstants.TABULAR_MEASURE_TAG );
		super.visitTabularMeasure( obj );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitTabularMeasureGroup(org.eclipse.birt.report.model.elements.olap.TabularMeasureGroup)
	 */
	public void visitTabularMeasureGroup( TabularMeasureGroup obj )
	{
		writer.startElement( DesignSchemaConstants.TABULAR_MEASURE_GROUP_TAG );
		super.visitTabularMeasureGroup( obj );