org.apache.jackrabbit.core.query.lucene.join
Class DescendantPathNodeJoin

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.join.AbstractCondition
      org.apache.jackrabbit.core.query.lucene.join.DescendantPathNodeJoin

All Implemented Interfaces:

Condition

public class DescendantPathNodeJoin
extends AbstractCondition

DescendantPathNodeJoin implements a descendant path node join condition.

Field Summary

Fields inherited from class org.apache.jackrabbit.core.query.lucene.join.AbstractCondition

inner

Constructor Summary

DescendantPathNodeJoin(MultiColumnQueryHits context, Name contextSelectorName, Path relPath, HierarchyManager hmgr)
Creates a new descendant path node join condition.

Method Summary

ScoreNode[][]

getMatchingScoreNodes(ScoreNode descendant) Returns the matching inner score nodes for the given outer score node sn.

Methods inherited from class org.apache.jackrabbit.core.query.lucene.join.AbstractCondition

close, getIndex, getInnerSelectorNames

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DescendantPathNodeJoin

public DescendantPathNodeJoin(MultiColumnQueryHits context,
                              Name contextSelectorName,
                              Path relPath,
                              HierarchyManager hmgr)
                       throws IOException

Creates a new descendant path node join condition.

Parameters:

context - the inner query hits.

contextSelectorName - the selector name for the inner query hits.

relPath - the relative path of the join condition.

hmgr - the hierarchy manager.

Throws:

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

Method Detail

getMatchingScoreNodes

public ScoreNode[][] getMatchingScoreNodes(ScoreNode descendant)
                                    throws IOException

Returns the matching inner score nodes for the given outer score node sn.

The outer query hits loop contains the descendant nodes.

Parameters:

descendant - the current score nodes of the outer source.

Returns:

the matching score nodes in the inner source.

Throws:

IOException - if an error occurs while evaluating the condition.