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
}
	/**
	 * 
	 * @return
	 * @throws IOException
	 */
	private IndexKey readKeyObject( ) throws IOException
	{
		IndexKey keyObject = new IndexKey( );
		keyObject.setDimensionPos( documentObject.readInt( ) );
		
		keyObject.setKey( DocumentObjectUtil.readValue( documentObject,
				keyDataType ) );
		keyObject.setOffset( documentObject.readInt( ) );
		
		return keyObject;
	}
	/**
	 * 
	 * @throws IOException
	 * @throws DataException 
	 */
	private void createDocumentObject( ) throws IOException, DataException
	{
		documentObject = documentManager.createDocumentObject( name );
		if ( documentObject == null )
		{