Bug 182061 Data engine changes to support result set sharing
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
{
		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 );