er.neo4jadaptor.query.neo4j_eval.retrievers

Class PrimaryKeyRetriever<T>

java.lang.Object

er.neo4jadaptor.query.neo4j_eval.retrievers.PrimaryKeyRetriever<T>

Type Parameters:

T -

All Implemented Interfaces:

HasCost, Retriever<T,Number>

public abstract class PrimaryKeyRetriever<T>
extends Object
implements Retriever<T,Number>

Retrieves object ID.

Author:

Jedrzej Sobanski

Constructor Summary

Constructors

Constructor and Description
PrimaryKeyRetriever(EOAttribute att)

Method Summary

Modifier and Type	Method and Description
static PrimaryKeyRetriever<? extends org.neo4j.graphdb.PropertyContainer>	create(EOEntity entity)
Cost	getCost()
protected abstract long	getId(T t)
Iterator<Number>	retrieve(T t)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

PrimaryKeyRetriever

public PrimaryKeyRetriever(EOAttribute att)

Method Detail

getId

protected abstract long getId(T t)

retrieve

public Iterator<Number> retrieve(T t)

Specified by:

retrieve in interface Retriever<T,Number>

Returns:

set of values retrieved from the given argument

toString

public String toString()

Overrides:

toString in class Object

getCost

public Cost getCost()

Specified by:

getCost in interface HasCost

create

public static PrimaryKeyRetriever<? extends org.neo4j.graphdb.PropertyContainer> create(EOEntity entity)