Bug 192829 Aggregation binding filter doesn't work for crosstab
The filter condition on bindings for Crosstab doesn't take effect. Currently Dte hasn't supported this yet.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/aggregation/AggregationResultSet.java
*/
	public int getLevelKeyDataType( DimLevel level, String keyName )
	{
		if ( keyDataTypes == null )
		{
			return DataType.UNKNOWN_TYPE;
		}
		return getLevelKeyDataType( getLevelIndex( level ), keyName );
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.olap.data.api.IAggregationResultSet#getLevelKeyValue(int)
	 */
	public Object[] getLevelKeyValue( int levelIndex )
	{
		if ( resultObject.getLevelMembers( ) == null
				|| levelIndex < 0
				|| levelIndex > resultObject.getLevelMembers( ).length - 1 )
		{
			return null;
		}
		return resultObject.getLevelMembers()[levelIndex].getKeyValues();
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.olap.data.api.IAggregationResultSet#length()
	 */
	public int length( )
	{
		return aggregationResultRows.size( );