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
{
		String label;
		Object value;
		SelectionChoice( String label, Object value )
		{
			this.label = label;
			this.value = value;
		}
		public String getLabel( )
		{
			return this.label;
		}
		public Object getValue( )
		{
			return this.value;
		}
		
		public boolean equals( Object obj )
		{
			if ( obj == this )
			{
				return true;
			}
			if ( !(obj instanceof SelectionChoice ) )
			{
				return false;