io.crnk.jpa.mapping

Class IdentityMapper<E>

java.lang.Object

io.crnk.jpa.mapping.IdentityMapper<E>

All Implemented Interfaces:

JpaMapper<E,E>

public class IdentityMapper<E>
extends java.lang.Object
implements JpaMapper<E,E>

Method Summary

Modifier and Type	Method and Description
E	map(Tuple tuple) Usually the first tuple entry is the entity and any additonal tuple entries are computed attributes.
static <E> IdentityMapper<E>	newInstance()
E	unmap(E dto) Maps the dto back to the entity.

Methods inherited from class java.lang.Object

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

Method Detail

newInstance

public static final <E> IdentityMapper<E> newInstance()

map

public E map(Tuple tuple)

Description copied from interface: JpaMapper

Usually the first tuple entry is the entity and any additonal tuple entries are computed attributes. However, applications may choose to override this to only fetch a subset of attributes for performance reasons.

Specified by:

map in interface JpaMapper<E,E>

Parameters:

tuple - to map to a DTO. Usually the first entry is the entity. Additional entries are compuated attributes.

Returns:

mapped dto

unmap

public E unmap(E dto)

Description copied from interface: JpaMapper

Maps the dto back to the entity. Make sure to return a managed entity instance to support proper inserts, updates and deletes. An implementation may choose to lookup the entity with the entity manager and create a new instance if it has not been found.

Specified by:

unmap in interface JpaMapper<E,E>

Parameters:

dto - to map to an entity.

Returns:

entity