setStringProperty( IReportItemModel.TOC_PROP, expression );
if ( StringUtil.isEmpty( expression ) ) { setProperty( IReportItemModel.TOC_PROP, null ); return; } TOCHandle tocHandle = getTOC( ); if ( StringUtil.isBlank( expression ) ) return; if ( tocHandle == null ) { TOC toc = StructureFactory.createTOC( expression ); addTOC( toc ); } else { tocHandle.setExpression( expression ); }
	public void setTocExpression( String expression ) throws SemanticException	{		setStringProperty( IReportItemModel.TOC_PROP, expression );	}