org.springframework.datastore.engine
Interface Persister

All Known Implementing Classes:

AbstractKeyValueEntityPesister, EntityPersister, LockableEntityPersister, RedisEntityPersister

public interface Persister

A Persister is responsible for persisting and retrieving an object.

Since:

1.0

Method Summary

Query	createQuery() Creates a query for the entity
void	delete(Iterable objects) Deletes one or many objects
void	delete(Object obj) Deletes a single object
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) Persist an object using the given mapping context
Object	proxy(Serializable key) Creates a proxy for the given key
Serializable	refresh(Object o) Refreshes the given objects state
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

Method Detail

getType

Class getType()

The type this persister persists

Returns:

The class this persisters persists

persist

Serializable persist(Object obj)

Persist an object using the given mapping context

Parameters:

obj - The object

Returns:

A generated Key

persist

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

Parameters:

objs - The objects

Returns:

A list of keys

retrieve

Object retrieve(Serializable key)

Retrieves an object for the given context and Key

Parameters:

key - The key

Returns:

The object in question

proxy

Object proxy(Serializable key)

Creates a proxy for the given key

Parameters:

key - The key

Returns:

The proxy

delete

void delete(Iterable objects)

Deletes one or many objects

Parameters:

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

retrieveAll

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

Batch retrieve several objects in one go

Parameters:

keys - The keys

Returns:

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

delete

void delete(Object obj)

Deletes a single object

Parameters:

obj - The object

createQuery

Query createQuery()

Creates a query for the entity

Returns:

The Query object

retrieveAll

List<Object> retrieveAll(Serializable[] keys)

Batch retrieve several objects in one go

Parameters:

keys - The keys

Returns:

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

refresh

Serializable refresh(Object o)

Refreshes the given objects state

Parameters:

o - The object to refresh

Returns:

The objects id