Bug 173836 NPE was thrown when click "Preview " button quickly twice[00]
NPE was thrown when click "Preview " button quickly twice[00] Build number: 2.2.0.v20070212-0630 Steps to reproduce: 1.open attached report 2.click "Preview" button quickly twice Expected result: Report can be previewed properly Actual result: NPE was thrown in second preview Error log: see screen shot
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/BaseAttributeBean.java
*/
	public boolean isRtl( )
	{
		return rtl;
	}
	/**
	 * Override default finalizer.
	 * 
	 * @exception Throwable
	 * @return
	 */
	protected void finalize( ) throws Throwable
	{
		try
		{
			__finalize( );
		}
		finally
		{
			super.finalize( );
		}
	}
	protected Map getParsedParameters( IViewerReportDesignHandle design,
			Collection parameterList, HttpServletRequest request,
			InputOptions options ) throws ReportServiceException
	{
		Map params = new HashMap( );
		for ( Iterator iter = parameterList.iterator( ); iter.hasNext( ); )
		{
			ParameterDefinition parameterObj = (ParameterDefinition) iter