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
protected Collection parameterDefns = null;
	
	protected static Logger log = Logger
			.getLogger( GetParameterDefinitionTask.class.getName( ) );
	/**
	 * @param engine
	 *            reference to the report engine
	 * @param runnable
	 *            the runnable report design
	 */
	public GetParameterDefinitionTask( ReportEngine engine,
			ReportRunnable runnable )
	{
		super( engine, runnable, IEngineTask.TASK_GETPARAMETERDEFINITION);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.api2.IGetParameterDefinitionTask#getParameterDefns(boolean)
	 */
	public Collection getParameterDefns( boolean includeParameterGroups )
	{
		ModuleHandle designHandle = executionContext.getDesign( );
		Collection original = getParameters( designHandle, includeParameterGroups );
		Iterator iter = original.iterator( );