Bug 141255 No error for the incompatible parameter value
Steps to reproduce: 1.New a decimal parameter, set the default value to "aaa" 2.Preview the report by "Preview" tab Expected result: Error to say the incompatible parameter value Actual result: Parameter request page keeps poping up till input the decimal value Note: if preview in Web Viewer, error will be thrown out, but no exception description.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtCacheParameterActionHandler.java
configFile.delete( );
			}
			
			ReportDesignHandle handle = sessionHandle.createDesign( );
			
			IReportRunnable runnable = (IReportRunnable) attrBean
					.getReportDesignHandle( context.getRequest( ) )
					.getDesignObject( );
			ModuleHandle model = runnable.getDesignHandle( ).getModuleHandle( );
			
			Oprand[] op = this.operation.getOprand( );
			if ( op != null )
			{
				Iterator paramIr = null;
				if ( attrBean.getParameterList( ) != null )
					paramIr = attrBean.getParameterList( ).iterator( );
				for ( int i = 0; i < op.length; i++ )
				{
					ConfigVariable configVar = new ConfigVariable( );
					String paramName = op[i].getName( );
					String paramValue = op[i].getValue( );
					
					ParameterHandle parameterHandle = model
							.findParameter( paramName );
					if ( parameterHandle != null && paramValue != null
							&& paramIr != null )
					{
						while ( paramIr.hasNext( ) )
						{
							ParameterDefinition parameterObj = (ParameterDefinition) paramIr