Bug 191637 Empty cube causes error
Comment removed as requested by the submitter - 2007-06-08 droy
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/util/DiskIndex.java
if ( selection.getMax( ) != null
				&& CompareUtil.compare( node.minKeyValue, selection.getMax( ) ) > 0 )
		{
			return false;
		}
		return true;
	}
	
	public void close( ) throws IOException
	{
		if ( documentObject != null )
		{
			documentObject.close( );
			documentObject = null;
		}
		if ( offsetDocumentObject != null )
		{
			offsetDocumentObject.close( );
			offsetDocumentObject = null;
		}
	}
}
class NonLeafNode
{
	int numberOfSon;
	Object[] maxKeyValue;
	Object[] minKeyValue;
	int offset;
}
class NodeSelection implements IStructure