Bug 201236 Issue about Allow multiple and duplicate values in Layout preview[0705]
Description: Issue about Allow multiple and duplicate values in Layout preview Build number:2.2.1.v20070827 Steps to reproduce: 1. New sample data source and dataset from CUSTOMERS. 2. New a parameter p1, listbox, dynamic, value field COUNTRY, tick on allow duplicate value, tick on allow multiple values. 3. Insert a data item to Layout, set expression as var values=""; for (i=0;i<params["p1"].value.length;i++) values=values+params["p1"].value[i]+"."; values; 4. In Layout, click Preview and select France. Expected result: Display one France. Actual result: Display several France. I tried the same action but preview in Web viewer and extenal html, the result is only one France. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
if ( lastModifiedOfDesign != -1L && reportDocFile != null
				&& reportDocFile.exists( ) && reportDocFile.isFile( ) )
		{
			if ( lastModifiedOfDesign > reportDocFile.lastModified( )
					|| ParameterAccessor.isOverwrite( request ) )
			{
				reportDocFile.delete( );
			}
		}
	}
	/**
	 * Returns lastModified of report design file. If file doesn't exist, return
	 * -1L;
	 * 
	 * @param request
	 * @return
	 */
	protected long getLastModifiedOfDesign( HttpServletRequest request )
	{
		String designFile = ParameterAccessor.getParameter( request,
				ParameterAccessor.PARAM_REPORT );
		if ( designFile == null )
			return -1L;
		
		File file = new File( this.reportDesignName );
		if ( file != null && file.exists( ) )
		{
			if ( file.isFile( ) )
				return file.lastModified( );
		}