er.neo4jadaptor.query.neo4j_eval.retrievers

Class ForeignKeyValue

java.lang.Object

er.neo4jadaptor.query.neo4j_eval.retrievers.ForeignKeyValue

All Implemented Interfaces:

HasCost, Retriever<org.neo4j.graphdb.PropertyContainer,Number>

public class ForeignKeyValue
extends Object
implements Retriever<org.neo4j.graphdb.PropertyContainer,Number>

Simulates getting foreign key value. Actually we don't store foreign key values in Neo4J so instead we traverse relationship and return destination ID.

Author:

Jedrzej Sobanski

Constructor Summary

Constructors

Constructor and Description
ForeignKeyValue(EORelationship rel)

Method Summary

Modifier and Type	Method and Description
Cost	getCost()
Iterator<Number>	retrieve(org.neo4j.graphdb.PropertyContainer container)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ForeignKeyValue

public ForeignKeyValue(EORelationship rel)

Method Detail

getCost

public Cost getCost()

Specified by:

getCost in interface HasCost

retrieve

public Iterator<Number> retrieve(org.neo4j.graphdb.PropertyContainer container)

Specified by:

retrieve in interface Retriever<org.neo4j.graphdb.PropertyContainer,Number>

Returns:

set of values retrieved from the given argument

toString

public String toString()

Overrides:

toString in class Object