Bug 209451 Default value for Cascading parameter lost.[0705]
Description: Default value for Cascading parameter lost. Build number:2.3.0.v20071112 Steps to reproduce: 1. New sample data source and dataset from CUSTOMERS. 2. New a cascading parameter from COUNTRY, STATE, set default value as USA and CA. 3. Preview. 4. Select other country and then back to USA, check values in state. Expected result: CA in state value list. Actual result: No item for 'CA' Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/actionhandler/BirtGetCascadeParameterActionHandler.java
.findParameterDefinition( paramName );
		String defaultValue = null;
		String defaultLabel = null;
		if ( keepDefValue )
		{
			Object obj = attrBean.getDefaultValues( )
					.get( parameter.getName( ) );
			if ( obj != null )
			{
				defaultValue = DataUtil.getDisplayValue( obj );
				defaultLabel = ParameterValidationUtil.getDisplayValue( null,
						parameter.getPattern( ), obj, attrBean.getLocale( ) );
			}
		}
		
		List selectionList = preHandleCascadeParameterSelectionList( parameter,
				defaultValue, defaultLabel );
		int index = selectionList.size( );
		Collection list = getReportService( )
				.getSelectionListForCascadingGroup( design, groupName,
						groupKeys, options );
		if ( list != null && list.size( ) > 0 )
		{
			Iterator iList = list.iterator( );
			while ( iList != null && iList.hasNext( ) )
			{
				ParameterSelectionChoice item = (ParameterSelectionChoice) iList
						.next( );
				if ( item == null )
					continue;