org.apache.jackrabbit.core.query.lucene
Interface HierarchyResolver

All Known Implementing Classes:

CachingMultiReader, SearchIndex.CombinedIndexReader

public interface HierarchyResolver

HierarchyResolver extends an IndexReader with the ability to resolve a JCR hierarchy.

Method Summary

int	getParent(int n) Returns the document number of the parent of n or -1 if n does not have a parent (n is the root node).

Method Detail

getParent

public int getParent(int n)
              throws IOException

Returns the document number of the parent of n or -1 if n does not have a parent (n is the root node).

Parameters:

n - the document number.

Returns:

the document number of n's parent.

Throws:

IOException - if an error occurs while reading from the index.