org.springframework.datastore.engine
Class EntityPersister

java.lang.Object
  org.springframework.datastore.engine.EntityPersister

All Implemented Interfaces:

EntityInterceptorAware, Persister

Direct Known Subclasses:

LockableEntityPersister

public abstract class EntityPersister
extends Object
implements Persister, EntityInterceptorAware

A Persister specificly for persisting PersistentEntity instances

Since:

1.0

Field Summary

protected List<EntityInterceptor>	interceptors
protected ProxyFactory	proxyFactory
protected Session	session

Constructor Summary

EntityPersister(MappingContext mappingContext, PersistentEntity entity, Session session)

Method Summary

void	addEntityInterceptor(EntityInterceptor interceptor) Adds an EntityInterceptor
protected EntityAccess	createEntityAccess(PersistentEntity persistentEntity, Object obj)
void	delete(Iterable objects) Deletes one or many objects
void	delete(Object obj) Deletes a single object
protected abstract void	deleteEntities(PersistentEntity persistentEntity, Iterable objects)
protected abstract void	deleteEntity(PersistentEntity persistentEntity, Object obj)
MappingContext	getMappingContext()
Serializable	getObjectIdentifier(Object obj) Obtains an objects identifer
PersistentEntity	getPersistentEntity()
ProxyFactory	getProxyFactory()
Class	getType() The type this persister persists
List<Serializable>	persist(Iterable objs) Persists a number of objects at the same time and returns their keys in the order specified by the objs parameter
Serializable	persist(Object obj) Persists an object returning the identifier
protected abstract List<Serializable>	persistEntities(PersistentEntity persistentEntity, Iterable objs)
protected abstract Serializable	persistEntity(PersistentEntity persistentEntity, Object obj) Persist the given persistent entity
Object	retrieve(Serializable key) Retrieves an object for the given context and Key
List<Object>	retrieveAll(Iterable<Serializable> keys) Batch retrieve several objects in one go
List<Object>	retrieveAll(Serializable[] keys) Batch retrieve several objects in one go
protected abstract List<Object>	retrieveAllEntities(PersistentEntity persistentEntity, Iterable<Serializable> keys)
protected abstract List<Object>	retrieveAllEntities(PersistentEntity persistentEntity, Serializable[] keys)
protected abstract Object	retrieveEntity(PersistentEntity persistentEntity, Serializable key) Retrieve a PersistentEntity for the given mappingContext and key
void	setEntityInterceptors(List<EntityInterceptor> interceptors)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.datastore.engine.Persister

createQuery, proxy, refresh

Field Detail

interceptors

protected List<EntityInterceptor> interceptors

session

protected Session session

proxyFactory

protected ProxyFactory proxyFactory

Constructor Detail

EntityPersister

public EntityPersister(MappingContext mappingContext,
                       PersistentEntity entity,
                       Session session)

Method Detail

getProxyFactory

public ProxyFactory getProxyFactory()

addEntityInterceptor

public void addEntityInterceptor(EntityInterceptor interceptor)

Description copied from interface: EntityInterceptorAware

Adds an EntityInterceptor

Specified by:

addEntityInterceptor in interface EntityInterceptorAware

Parameters:

interceptor - The interceptor to add

setEntityInterceptors

public void setEntityInterceptors(List<EntityInterceptor> interceptors)

Specified by:

setEntityInterceptors in interface EntityInterceptorAware

Parameters:

interceptors - A list of entity interceptors

getMappingContext

public MappingContext getMappingContext()

Returns:

The MappingContext instance

getPersistentEntity

public PersistentEntity getPersistentEntity()

Returns:

The PersistentEntity instance

getType

public Class getType()

Description copied from interface: Persister

The type this persister persists

Specified by:

getType in interface Persister

Returns:

The class this persisters persists

getObjectIdentifier

public Serializable getObjectIdentifier(Object obj)

Obtains an objects identifer

Parameters:

obj - The object

Returns:

The identifier or null if it doesn't have one

persist

public final Serializable persist(Object obj)

Persists an object returning the identifier

Specified by:

persist in interface Persister

Parameters:

obj - The object to persist

Returns:

The identifer

persist

public List<Serializable> persist(Iterable objs)

Description copied from interface: Persister

Persists a number of objects at the same time and returns their keys in the order specified by the objs parameter

Specified by:

persist in interface Persister

Parameters:

objs - The objects

Returns:

A list of keys

retrieveAll

public List<Object> retrieveAll(Iterable<Serializable> keys)

Description copied from interface: Persister

Batch retrieve several objects in one go

Specified by:

retrieveAll in interface Persister

Parameters:

keys - The keys

Returns:

The objects in a list in the same order as the specified keys

retrieveAll

public List<Object> retrieveAll(Serializable[] keys)

Description copied from interface: Persister

Batch retrieve several objects in one go

Specified by:

retrieveAll in interface Persister

Parameters:

keys - The keys

Returns:

The objects in a list in the same order as the specified keys

retrieveAllEntities

protected abstract List<Object> retrieveAllEntities(PersistentEntity persistentEntity,
                                                    Serializable[] keys)

retrieveAllEntities

protected abstract List<Object> retrieveAllEntities(PersistentEntity persistentEntity,
                                                    Iterable<Serializable> keys)

persistEntities

protected abstract List<Serializable> persistEntities(PersistentEntity persistentEntity,
                                                      Iterable objs)

retrieve

public final Object retrieve(Serializable key)

Description copied from interface: Persister

Retrieves an object for the given context and Key

Specified by:

retrieve in interface Persister

Parameters:

key - The key

Returns:

The object in question

retrieveEntity

protected abstract Object retrieveEntity(PersistentEntity persistentEntity,
                                         Serializable key)

Retrieve a PersistentEntity for the given mappingContext and key

Parameters:

persistentEntity - The entity

key - The key

Returns:

The object or null if it doesn't exist

persistEntity

protected abstract Serializable persistEntity(PersistentEntity persistentEntity,
                                              Object obj)

Persist the given persistent entity

Parameters:

persistentEntity - The PersistentEntity

obj -

Returns:

The generated key

delete

public final void delete(Iterable objects)

Description copied from interface: Persister

Deletes one or many objects

Specified by:

delete in interface Persister

Parameters:

objects - The objects to delete. Must all be of the same type or an exception will be thrown.

delete

public void delete(Object obj)

Description copied from interface: Persister

Deletes a single object

Specified by:

delete in interface Persister

Parameters:

obj - The object

deleteEntity

protected abstract void deleteEntity(PersistentEntity persistentEntity,
                                     Object obj)

deleteEntities

protected abstract void deleteEntities(PersistentEntity persistentEntity,
                                       Iterable objects)

createEntityAccess

protected EntityAccess createEntityAccess(PersistentEntity persistentEntity,
                                          Object obj)