org.apache.openjpa.persistence
Class TupleFactory

java.lang.Object
  org.apache.openjpa.persistence.TupleFactory

All Implemented Interfaces:

ObjectFactory<Tuple>

public class TupleFactory
extends Object
implements ObjectFactory<Tuple>

A factory for tuples such that all instances created by a factory instance share the same TupleElements to save memory consumption.
All Tuple instances created by this factory access the TupleElememts contained in this factory.

Since:

2.0.0

Author:

Pinaki Poddar

Constructor Summary

TupleFactory(List<TupleElement<?>> elems)
A factory of Tuple that shares the given TupleElements.

TupleFactory(Selection<?>... elems)

TupleFactory(TupleElement<?>... elems)

Method Summary

List<TupleElement<?>>	getElements()
int	getIndex(String alias)
int	getIndex(TupleElement<?> e)
TupleImpl	newInstance()

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleFactory

public TupleFactory(List<TupleElement<?>> elems)

A factory of Tuple that shares the given TupleElements.

TupleFactory

public TupleFactory(TupleElement<?>... elems)

TupleFactory

public TupleFactory(Selection<?>... elems)

Method Detail

getElements

public List<TupleElement<?>> getElements()

newInstance

public TupleImpl newInstance()

Specified by:

newInstance in interface ObjectFactory<Tuple>

getIndex

public int getIndex(TupleElement<?> e)

getIndex

public int getIndex(String alias)