Bug 172618 [smoke]Cascading parameter cannot retrieve correct values.[0705]
Description: Cascading parameter cannot retrieve correct values. Build number:2.1.2.v20070202. 2.2.0.v20070131 Steps to reproduce: 1. New sample data source and dataset from OFFICES. 2. New a cascading group, first parameter from COUNTRY, second from STATE 3. Preview. Expected result: Select a country value, then corresponding state value will display. e.g. select France, then only paris in second list. Actual result: Select France, you will see paris, NYC and San Francisco in second list. Error log:N/A
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
*/
	private RDSaveHelper getRdSaveHelper( )
	{
		if ( this.rdSaveHelper == null )
		{
			rdSaveHelper = new RDSaveHelper( this.context,
					this.resultService.getQueryDefn( ),
					this.odiResult,
					new IDInfo( this.resultService.getQueryResults( ).getID( ) ) );
		}
		
		return this.rdSaveHelper;
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getValue(java.lang.String)
	 */
	public Object getValue( String exprName ) throws BirtException
	{
		checkStarted( );
		
		logger.logp( Level.FINER,
				ResultIterator.class.getName( ),
				"getValue",
				"get of value binding column: " + LogUtil.toString( exprName ) );
		
		if ( this.resultService.getBindingExpr( exprName ) == null
				&& this.resultService.getAutoBindingExpr( exprName ) == null )
			throw new DataException( ResourceConstants.INVALID_BOUND_COLUMN_NAME,
					exprName );