Bug 129144 Support suppressDuplicates property on table row in report engine
See 129143 for detail. This only needs to be supported for data item in a detail row of a table.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/DataItemExecutor.java
assert ( dataObj instanceof DataContent );
		IContent parent = context.getContent( );
		context.pushContent( dataObj );
		openResultSet( item );
		accessQuery( item, emitter );
		initializeContent( parent, item, dataObj );
		processAction( item, dataObj );
		processBookmark( item, dataObj );
		processStyle( item, dataObj );
		processVisibility( item, dataObj );
		Object value = context.evaluate( dataItem.getValue( ) );
		dataObj.setValue( value );
		
		processMappingValue( dataItem, dataObj );
		if ( context.isInFactory( ) )
		{
			DataItemScriptExecutor.handleOnCreate( (DataContent) dataObj,
					context );
		}
		startTOCEntry( dataObj );
		
		if ( emitter != null )
		{
			emitter.startData( dataObj );
		}
		finishTOCEntry( );
		closeResultSet( );
		context.popContent( );
	}
}