Bug 209450 [regression]Duplicate values display in Cascading parameter list[0705]
Descripption: Duplicate values display in Cascading parameter list 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 AND CITY fields. 3. Preview. Expected result: Values in three parameter list aren't duplicated. Actual result: Duplicate values show in parameter list. Error log:n/a
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
public SlotHandle getParameters( )
	{
		ReportDesignHandle report = (ReportDesignHandle) runnable
				.getDesignHandle( );
		return report.getParameters( );
	}
	public ParameterHandle getParameter( String name )
	{
		ReportDesignHandle report = (ReportDesignHandle) runnable
				.getDesignHandle( );
		return report.findParameter( name );
	}
	public HashMap getDefaultValues( )
	{
		
		usingParameterValues( );
		final HashMap values = new HashMap( );
		
		new ParameterVisitor( ) {
			boolean visitScalarParameter( ScalarParameterHandle param,
					Object userData )
			{
				String name = param.getName( );
				String expr = param.getDefaultValue( );
				String type = param.getDataType( );
				Object value = convertToType( expr, type );
				values.put( name, value );
				return true;
			}
			boolean visitParameterGroup( ParameterGroupHandle group,