er.neo4jadaptor.query.neo4j_by_pk

Class ByPrimaryKeyFilter<T extends org.neo4j.graphdb.PropertyContainer>

java.lang.Object

er.neo4jadaptor.query.Filter<T>

er.neo4jadaptor.query.neo4j_by_pk.ByPrimaryKeyFilter<T>

Type Parameters:

T -

public class ByPrimaryKeyFilter<T extends org.neo4j.graphdb.PropertyContainer>
extends Filter<T>

Filters nodes being closely related to some set of nodes with known IDs. If it's known that all possible result candidates have relationship to one known node then it is faster to get all of that nodes and evaluate them using even reasonably slow technique rather than performing Lucene search which might be fast but taking around constant time therefore making it not the fastest for small result sets.

Author:

Jedrzej Sobanski

Field Summary

Fields inherited from class er.neo4jadaptor.query.Filter

successor

Constructor Summary

Constructors

Constructor and Description
ByPrimaryKeyFilter()

Method Summary

Modifier and Type	Method and Description
Results<T>	doFilter(org.neo4j.graphdb.GraphDatabaseService db, com.webobjects.eoaccess.EOEntity entity, com.webobjects.eocontrol.EOQualifier qualifier) Perform search.

Methods inherited from class er.neo4jadaptor.query.Filter

setSuccessor

Methods inherited from class java.lang.Object

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

Constructor Detail

ByPrimaryKeyFilter

public ByPrimaryKeyFilter()

Method Detail

doFilter

public Results<T> doFilter(org.neo4j.graphdb.GraphDatabaseService db,
                           com.webobjects.eoaccess.EOEntity entity,
                           com.webobjects.eocontrol.EOQualifier qualifier)

Description copied from class: Filter

Perform search.

Specified by:

doFilter in class Filter<T extends org.neo4j.graphdb.PropertyContainer>

Parameters:

db - database to search in

entity - entity to search records from

qualifier - search criteria

Returns:

records that may match search criteria