Bug 135790 ClassCastException in RowData.
ClassCastException is thrown in RowData line 81(IBaseExpression expr = ( IBaseExpression ) valueExpressions.get( index - 1 );).
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/parser/EngineIRVisitor.java
currentElement = extendedItem;
	}
	public void visitTemplateReportItem( TemplateReportItemHandle obj )
	{
		TemplateDesign template = new TemplateDesign( );
		setupReportElement( template, obj );
		template.setPromptText( obj.getDescription( ) );
		template.setPromptTextKey( obj.getDescriptionKey( ) );
		template.setAllowedType( obj.getAllowedType( ) );
		
		currentElement = template;
	}
	protected void setupGroup( GroupDesign group, GroupHandle handle )
	{
		
		group.setName( handle.getName( ) );
		String pageBreakBefore = handle
				.getStringProperty( StyleHandle.PAGE_BREAK_BEFORE_PROP );
		String pageBreakAfter = handle
				.getStringProperty( StyleHandle.PAGE_BREAK_AFTER_PROP );
		group.setPageBreakBefore( pageBreakBefore );
		group.setPageBreakAfter( pageBreakAfter );
	}
	/**
	 * create a table band using the items in slot.
	 * 
	 * @param elements
	 *            items in DE's IR
	 * @return TableBand.