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
selectionList.add( index++, new SelectItemChoice( "", "" ) ); 
		}
		else
		{
			selectionList.add( index++, new SelectItemChoice( "", "" ) ); 
		}
		return selectionList;
	}
	/**
	 * Returns the cascading parameter selection list
	 * 
	 * @param paramName
	 * @param design
	 * @param groupName
	 * @param groupKeys
	 * @param options
	 * @param attrBean
	 * @param keepDefValue
	 * @return
	 * @throws RemoteException
	 * @throws ReportServiceException
	 */
	private List doQueryCascadeParameterSelectionList( String paramName,
			IViewerReportDesignHandle design, String groupName,
			Object[] groupKeys, InputOptions options,
			ViewerAttributeBean attrBean, boolean keepDefValue )
			throws RemoteException, ReportServiceException
	{
		
		ParameterDefinition parameter = attrBean