org.hibernate.loader.entity
Class BatchingEntityLoader

java.lang.Object
  org.hibernate.loader.entity.BatchingEntityLoader

All Implemented Interfaces:

UniqueEntityLoader

public class BatchingEntityLoader
extends Object
implements UniqueEntityLoader

"Batch" loads entities, using multiple primary key values in the SQL where clause.

Author:

Gavin King

See Also:

EntityLoader

Constructor Summary

BatchingEntityLoader(EntityPersister persister, int[] batchSizes, Loader[] loaders)

Method Summary

static UniqueEntityLoader	createBatchingEntityLoader(OuterJoinLoadable persister, int maxBatchSize, LockMode lockMode, SessionFactoryImplementor factory, LoadQueryInfluencers loadQueryInfluencers)
static UniqueEntityLoader	createBatchingEntityLoader(OuterJoinLoadable persister, int maxBatchSize, LockOptions lockOptions, SessionFactoryImplementor factory, LoadQueryInfluencers loadQueryInfluencers)
Object	load(Serializable id, Object optionalObject, SessionImplementor session) Load an entity instance.
Object	load(Serializable id, Object optionalObject, SessionImplementor session, LockOptions lockOptions) Load an entity instance by id.

Methods inherited from class java.lang.Object

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

Constructor Detail

BatchingEntityLoader

public BatchingEntityLoader(EntityPersister persister,
                            int[] batchSizes,
                            Loader[] loaders)

Method Detail

load

public Object load(Serializable id,
                   Object optionalObject,
                   SessionImplementor session)

Load an entity instance. If optionalObject is supplied, load the entity state into the given (uninitialized) object.

Specified by:

load in interface UniqueEntityLoader

load

public Object load(Serializable id,
                   Object optionalObject,
                   SessionImplementor session,
                   LockOptions lockOptions)

Description copied from interface: UniqueEntityLoader

Load an entity instance by id. If optionalObject is supplied (non-null, the entity state is loaded into that object instance instead of instantiating a new one.

Specified by:

load in interface UniqueEntityLoader

Parameters:

id - The id to be loaded

optionalObject - The (optional) entity instance in to which to load the state

session - The session from which the request originated

lockOptions - The lock options.

Returns:

The loaded entity

createBatchingEntityLoader

public static UniqueEntityLoader createBatchingEntityLoader(OuterJoinLoadable persister,
                                                            int maxBatchSize,
                                                            LockMode lockMode,
                                                            SessionFactoryImplementor factory,
                                                            LoadQueryInfluencers loadQueryInfluencers)
                                                     throws MappingException

Throws:

MappingException

createBatchingEntityLoader

public static UniqueEntityLoader createBatchingEntityLoader(OuterJoinLoadable persister,
                                                            int maxBatchSize,
                                                            LockOptions lockOptions,
                                                            SessionFactoryImplementor factory,
                                                            LoadQueryInfluencers loadQueryInfluencers)
                                                     throws MappingException

Throws:

MappingException