org.neo4j.graphdb.index

Interface ReadableRelationshipIndex

All Superinterfaces:

ReadableIndex<Relationship>

All Known Subinterfaces:

RelationshipIndex

public interface ReadableRelationshipIndex
extends ReadableIndex<Relationship>

Extends the ReadableIndex interface with additional get/query methods which are specific to Relationships. Each of ReadableIndex.get(String, Object), ReadableIndex.query(String, Object) and ReadableIndex.query(Object) have an additional method which allows efficient filtering on start/end node of the relationships.

Author:

Mattias Persson

Method Summary

Modifier and Type	Method and Description
IndexHits<Relationship>	get(String key, Object valueOrNull, Node startNodeOrNull, Node endNodeOrNull) Returns exact matches from this index, given the key/value pair.
IndexHits<Relationship>	query(Object queryOrQueryObjectOrNull, Node startNodeOrNull, Node endNodeOrNull) Returns matches from this index based on the supplied query object, which can be a query string or an implementation-specific query object.
IndexHits<Relationship>	query(String key, Object queryOrQueryObjectOrNull, Node startNodeOrNull, Node endNodeOrNull) Returns matches from this index based on the supplied key and query object, which can be a query string or an implementation-specific query object.

Methods inherited from interface org.neo4j.graphdb.index.ReadableIndex

get, getEntityType, getGraphDatabase, getName, isWriteable, query, query

Method Detail

get

IndexHits<Relationship> get(String key,
                            Object valueOrNull,
                            Node startNodeOrNull,
                            Node endNodeOrNull)

Returns exact matches from this index, given the key/value pair. Matches will be for key/value pairs just as they were added by the Index.add(org.neo4j.graphdb.PropertyContainer, String, Object) method.

Parameters:

key - the key in the key/value pair to match.

valueOrNull - the value in the key/value pair to match.

startNodeOrNull - filter so that only Relationships with that given start node will be returned.

endNodeOrNull - filter so that only Relationships with that given end node will be returned.

Returns:

the result wrapped in an IndexHits object. If the entire result set isn't looped through, IndexHits.close() must be called before disposing of the result.

query

IndexHits<Relationship> query(String key,
                              Object queryOrQueryObjectOrNull,
                              Node startNodeOrNull,
                              Node endNodeOrNull)

Returns matches from this index based on the supplied key and query object, which can be a query string or an implementation-specific query object.

Parameters:

key - the key in this query.

queryOrQueryObjectOrNull - the query for the key to match.

startNodeOrNull - filter so that only Relationships with that given start node will be returned.

endNodeOrNull - filter so that only Relationships with that given end node will be returned.

Returns:

the result wrapped in an IndexHits object. If the entire result set isn't looped through, IndexHits.close() must be called before disposing of the result.

query

IndexHits<Relationship> query(Object queryOrQueryObjectOrNull,
                              Node startNodeOrNull,
                              Node endNodeOrNull)

Returns matches from this index based on the supplied query object, which can be a query string or an implementation-specific query object.

Parameters:

queryOrQueryObjectOrNull - the query to match.

startNodeOrNull - filter so that only Relationships with that given start node will be returned.

endNodeOrNull - filter so that only Relationships with that given end node will be returned.

Returns:

the result wrapped in an IndexHits object. If the entire result set isn't looped through, IndexHits.close() must be called before disposing of the result.