Bug 314631 Cann't get correct default values for parameters that with non-constant default value expressions
Steps to reproduce: 1. create a report with a scalar parameter that has non-constant default value expression such as BirtDateTime.today() 2. setup a project to get the default values of the parameter in BIRT runtime Eg. IReportEngine engine = createReportEngine( ); IRunnable runnable = engine.openReportDesign( REPORT_DESIGN ); IGetParamaterDefinitionTask task = engine.createGetParameterDefinitionTask( runnable ); HashMap result = task.getDefaultValues(); Expect result: The result map contains a parameter name and default value pair in which the default value is a Date instance of today. Actural result: The default value is null.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
value = convertToType( value, valueTypes[i] );
				if ( ( value == null && keyValues[i] != null )
						|| ( value != null && !value.equals( keyValues[i] ) ) )
				{
					return false;
				}
			}
			return true;
		}
	}
	
	private IResultIterator getResultSetOfCascadingGroup(
			CascadingParameterGroupHandle parameterGroup )
	{
		if ( parameterGroup == null )
			return null;
		
		
		
		DataSetHandle dataSet = parameterGroup.getDataSet( );
		if ( dataSet != null )
		{
			try
			{
				
				QueryDefinition queryDefn = createQueryDefinition( dataSet );
				DataRequestSession dteSession = createDataSession( dataSet );
				dteSession.getDataSessionContext( )
						.setAppContext( getAppContext( ) );
				Iterator iter = parameterGroup.getParameters( ).iterator( );