Bug 180190 Some unnecessary error log is shown in charting
When a chart in a report has no data, or there is no SWT interactivity notifier hooked to the engine, an warning or error are logged. Those are normal conditions of execution and should only log with a INFO level.
chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemPresentationImpl.java
}
		else
		{
			return "image"; 
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#getOutputContent()
	 */
	public Object getOutputContent( )
	{
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.extension.IReportItemPresentation#onRowSets(org.eclipse.birt.report.engine.extension.IRowSet[])
	 */
	public Object onRowSets( IRowSet[] irsa ) throws BirtException
	{
		
		if ( irsa == null || irsa.length != 1 || irsa[0] == null )
		{
			
			
			logger.log( new ChartException( ChartReportItemPlugin.ID,
					ChartException.GENERATION,
					"ChartReportItemPresentationImpl.error.NoData",