org.qi4j.entitystore.neo4j
Class NeoEntityStoreUnitOfWork

java.lang.Object
  org.qi4j.entitystore.neo4j.NeoEntityStoreUnitOfWork

All Implemented Interfaces:

EntityStoreUnitOfWork, StateCommitter

public class NeoEntityStoreUnitOfWork
extends Object
implements EntityStoreUnitOfWork, StateCommitter

Method Summary

StateCommitter	applyChanges()
void	cancel()
void	commit()
void	discard()
EntityState	getEntityState(EntityReference anIdentity) Get the EntityState for a given identity.
String	identity()
EntityState	newEntityState(EntityReference anIdentity, EntityDescriptor entityDescriptor) Create new EntityState for a given identity.

Methods inherited from class java.lang.Object

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

Method Detail

applyChanges

public StateCommitter applyChanges()
                            throws EntityStoreException

Specified by:

applyChanges in interface EntityStoreUnitOfWork

Throws:

EntityStoreException

discard

public void discard()

Specified by:

discard in interface EntityStoreUnitOfWork

getEntityState

public EntityState getEntityState(EntityReference anIdentity)
                           throws EntityStoreException,
                                  EntityNotFoundException

Description copied from interface: EntityStoreUnitOfWork

Get the EntityState for a given identity. Throws EntityNotFoundException if the entity with given anIdentity is not found.

Specified by:

getEntityState in interface EntityStoreUnitOfWork

Parameters:

anIdentity - The entity identity. This argument must not be null.

Returns:

Entity state given the composite descriptor and identity.

Throws:

EntityStoreException - thrown if retrieval failed.

EntityNotFoundException - if requested entity does not exist

newEntityState

public EntityState newEntityState(EntityReference anIdentity,
                                  EntityDescriptor entityDescriptor)
                           throws EntityStoreException

Description copied from interface: EntityStoreUnitOfWork

Create new EntityState for a given identity.

This should only create the EntityState and not insert it into any database, since that should occur during the EntityStoreUnitOfWork.applyChanges() call.

Specified by:

newEntityState in interface EntityStoreUnitOfWork

Parameters:

anIdentity - the identity of the entity

entityDescriptor - entity descriptor

Returns:

The new entity state.

Throws:

EntityStoreException - Thrown if creational fails.

cancel

public void cancel()

Specified by:

cancel in interface StateCommitter

commit

public void commit()

Specified by:

commit in interface StateCommitter

identity

public String identity()

Specified by:

identity in interface EntityStoreUnitOfWork