Bug 182895 Support sort on Level attribute.
Currently in OLAP engine we only support sort on level key value. We should go ahead to support sort on level attribute value.
data/org.eclipse.birt.data.tests/test/org/eclipse/birt/data/engine/olap/api/CubeFeaturesTest.java
}
		else if ( name.equals( "level13" ) )
		{
			return DataType.STRING_TYPE;
		}
		else if ( name.equals( "level21" ) )
		{
			return DataType.STRING_TYPE;
		}
		else if ( name.equals( "measure1" ) )
		{
			return DataType.INTEGER_TYPE;
		}
		return -1;
	}
	public Integer getInteger( int fieldIndex ) throws BirtException
	{
		
		return null;
	}
	public String getString( int fieldIndex ) throws BirtException
	{
		
		return null;
	}
	public Object getValue( int fieldIndex ) throws BirtException
	{
		if ( fieldIndex == 0 )
		{
			return DIM0_L1Col[ptr];