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
* 
	 * @see org.eclipse.birt.report.engine.api2.IGetParameterDefinitionTask#evaluateDefaults()
	 */
	public void evaluateDefaults( ) throws EngineException
	{
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api.IGetParameterDefinitionTask#getParameterDefn(java.lang.String)
	 */
	public IParameterDefnBase getParameterDefn( String name )
	{
		IParameterDefnBase ret = null;
		if ( name == null )
		{
			return ret;
		}
		ModuleHandle designHandle = executionContext.getDesign( );
		Collection original = getParameters( designHandle, true );
		
		Iterator iter = original.iterator( );
		while ( iter.hasNext( ) )
		{
			ret = getParamDefnBaseByName( (ParameterDefnBase) iter.next( ),
					name );
			if ( ret != null )
				break;
		}