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

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

All Implemented Interfaces:

Condition

public class AncestorPathNodeJoin
extends AbstractCondition

AncestorPathNodeJoin implements an ancestor path node join condition.

Field Summary

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

inner

Constructor Summary

AncestorPathNodeJoin(MultiColumnQueryHits context, Name contextSelectorName, Path relPath, HierarchyManager hmgr)
Creates an ancestor path node join.

Method Summary

ScoreNode[][]

getMatchingScoreNodes(ScoreNode ancestor) 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

AncestorPathNodeJoin

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

Creates an ancestor path node join.

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 of the workspace.

Throws:

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

Method Detail

getMatchingScoreNodes

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

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

The outer query hits loop contains the ancestor nodes.

Parameters:

ancestor - 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.