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
{
			IndexKey indexKey = readKeyObject( );
			if ( CompareUtil.compare( indexKey.getKey(), key ) == 0 )
			{
				return indexKey;
			}
		}
		return null;
	}
	
	/**
	 * 
	 * @param node
	 * @param key
	 * @return
	 */
	private boolean isBetween( NonLeafNode node, Object[] key )
	{
		if ( CompareUtil.compare( node.minKeyValue, key ) > 0
				|| CompareUtil.compare( node.maxKeyValue, key ) < 0 )
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	/**
	 *