Bug 196745 Data Engine implementation of BPS80- Result Set Sharing
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/CacheResultIterator.java
*      org.mozilla.javascript.Scriptable)
	 */
	public IResultIterator getSecondaryIterator( String subQueryName,
			Scriptable scope ) throws BirtException
	{
		throw new UnsupportedOperationException( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getStartingGroupLevel()
	 */
	public int getStartingGroupLevel( ) throws BirtException
	{
		return startingGroupLevel;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getValue(java.lang.String)
	 */
	public Object getValue( String name ) throws BirtException
	{
		return columnValueMap.get( name );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#isEmpty()
	 */