org.neo4j.graphdb.index

Class UniqueFactory<T extends PropertyContainer>

java.lang.Object

org.neo4j.graphdb.index.UniqueFactory<T>

Type Parameters:

T - the type of entity created by this UniqueFactory.

Direct Known Subclasses:

UniqueFactory.UniqueNodeFactory, UniqueFactory.UniqueRelationshipFactory

Deprecated.

This API will be removed in next major release. Please consider using schema constraints and the Cypher MERGE clause instead.

@Deprecated
public abstract class UniqueFactory<T extends PropertyContainer>
extends Object

A utility class for creating unique (with regard to a given index) entities. Uses the putIfAbsent() method of the referenced index.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UniqueFactory.UniqueEntity<T extends PropertyContainer> Deprecated.
static class	UniqueFactory.UniqueNodeFactory Deprecated.
static class	UniqueFactory.UniqueRelationshipFactory Deprecated.

Method Summary

Modifier and Type	Method and Description
T	getOrCreate(String key, Object value) Deprecated.
UniqueFactory.UniqueEntity<T>	getOrCreateWithOutcome(String key, Object value) Deprecated.

Methods inherited from class java.lang.Object

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

Method Detail

getOrCreate

@Deprecated
public final T getOrCreate(String key,
                                       Object value)

Deprecated.

Get the indexed entity, creating it (exactly once) if no indexed entity exists.

Parameters:

key - the key to find the entity under in the index.

value - the value the key is mapped to for the entity in the index.

Returns:

the unique entity in the index.

getOrCreateWithOutcome

@Deprecated
public final UniqueFactory.UniqueEntity<T> getOrCreateWithOutcome(String key,
                                                                              Object value)

Deprecated.

Get the indexed entity, creating it (exactly once) if no indexed entity exists. Includes the outcome, i.e. whether the entity was created or not.

Parameters:

key - the key to find the entity under in the index.

value - the value the key is mapped to for the entity in the index.

Returns:

the unique entity in the index as well as whether or not it was created, wrapped in a UniqueFactory.UniqueEntity.