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
DesignSchemaConstants.FOOTER_TAG );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.design.elements.DesignVisitor#visitTableGroup(org.eclipse.birt.report.model.design.elements.TableGroup)
	 */
	public void visitTableGroup( TableGroup obj )
	{
		writer.startElement( DesignSchemaConstants.GROUP_TAG );
		super.visitTableGroup( obj );
		writeContents( obj, IGroupElementModel.HEADER_SLOT,
				DesignSchemaConstants.HEADER_TAG );
		writeContents( obj, IGroupElementModel.FOOTER_SLOT,
				DesignSchemaConstants.FOOTER_TAG );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.design.elements.DesignVisitor#visitColumn(org.eclipse.birt.report.model.design.elements.TableColumn)
	 */
	public void visitColumn( TableColumn obj )
	{
		
		
		writer.startElement( DesignSchemaConstants.COLUMN_TAG );
		markLineNumber( obj );
		writer.attribute( DesignSchemaConstants.ID_ATTRIB, new Long( obj