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
}
			SelectionChoice choice = (SelectionChoice)obj;
			if ( value == null )
			{
				return choice.value == null;
			}
			return value.equals( choice.value );
		}
	}
	
	static class CascadingParameterSelectionChoice extends SelectionChoice
			implements
				ICascadingParameterSelectionChoice
	{
		Collection children;
		public CascadingParameterSelectionChoice( String label, Object value )
		{
			super( label, value );
		}
		public void setChildren( Collection children )
		{
			this.children = children;
		}
		
		public Collection getChildSelectionList( )
		{
			return children;
		}
		public boolean equals( Object obj )
		{