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EntityLoader (Hibernate API Documentation) - Hibernate 2.1.8 正式版 API 英文文档

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net.sf.hibernate.loader
Class EntityLoader

java.lang.Object
  net.sf.hibernate.loader.Loader
      net.sf.hibernate.loader.OuterJoinLoader
          net.sf.hibernate.loader.AbstractEntityLoader
              net.sf.hibernate.loader.EntityLoader

All Implemented Interfaces:

UniqueEntityLoader

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public class EntityLoader

extends AbstractEntityLoader

implements UniqueEntityLoader

Load an entity using outerjoin fetching to fetch associated entities.
The ClassPersister must implement Loadable. For other entities, create a customized subclass of Loader.

Author:

Gavin King

See Also:

SimpleEntityLoader

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Nested Class Summary

 

Nested classes inherited from class net.sf.hibernate.loader.OuterJoinLoader

OuterJoinLoader.OuterJoinableAssociation

 

Field Summary

 

Fields inherited from class net.sf.hibernate.loader.OuterJoinLoader

AUTO, classPersisters, EAGER, LAZY, lockModeArray, owners, sql, suffixes

 

Fields inherited from class net.sf.hibernate.loader.Loader

NO_SUFFIX

 

Constructor Summary

EntityLoader(OuterJoinLoadable persister, int batchSize, SessionFactoryImplementor factory)

EntityLoader(OuterJoinLoadable persister, String[] uniqueKey, Type uniqueKeyType, int batchSize, SessionFactoryImplementor factory)

 

Method Summary
protected  Object	getResultColumnOrRow(Object[] row, ResultSet rs, SessionImplementor session)           Get the actual object that is returned in the user-visible result list.
protected  boolean	isSingleRowLoader()           Return false is this loader is a batch entity loader
Object	load(SessionImplementor session, Serializable id, Object optionalObject)           Load an entity instance.
Object	loadByUniqueKey(SessionImplementor session, Serializable id)

 

Methods inherited from class net.sf.hibernate.loader.AbstractEntityLoader

addAllToPropertySpaces, addToPropertySpaces, getAlias, getCollectionOwner, getCollectionPersister, getEntityAliases, getPersister, getWhereFragment, initClassPersisters, initStatementString, isJoinedFetchEnabled, renderStatement, setAlias, toString

 

Methods inherited from class net.sf.hibernate.loader.OuterJoinLoader

containsCollectionPersister, countClassPersisters, createLockModeArray, generateRootAlias, generateTableAlias, getJoinType, getLockModes, getOwners, getPersisters, getSQLString, getSuffixes, isJoinedFetchEnabledByDefault, mergeOuterJoins, selectString, toOwner, walkCollectionTree, walkTree, whereString

 

Methods inherited from class net.sf.hibernate.loader.Loader

applyLocks, bindNamedParameters, bindPositionalParameters, doList, generateAlias, generateSuffixes, getResultList, getResultSet, list, loadCollection, loadCollectionBatch, loadEntity, loadEntityBatch, loadSingleRow, postInstantiate, prepareQueryStatement, upgradeLocks

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

EntityLoader

public EntityLoader(OuterJoinLoadable persister,
                    int batchSize,
                    SessionFactoryImplementor factory)
             throws MappingException

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EntityLoader

public EntityLoader(OuterJoinLoadable persister,
                    String[] uniqueKey,
                    Type uniqueKeyType,
                    int batchSize,
                    SessionFactoryImplementor factory)
             throws MappingException

Method Detail

load

public Object load(SessionImplementor session,
                   Serializable id,
                   Object optionalObject)
            throws HibernateException,
                   SQLException

Description copied from interface: UniqueEntityLoader

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

Specified by:

load in interface UniqueEntityLoader

Throws:

HibernateException

SQLException

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loadByUniqueKey

public Object loadByUniqueKey(SessionImplementor session,
                              Serializable id)
                       throws HibernateException,
                              SQLException

Throws:

HibernateException

SQLException

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getResultColumnOrRow

protected Object getResultColumnOrRow(Object[] row,
                                      ResultSet rs,
                                      SessionImplementor session)
                               throws SQLException,
                                      HibernateException

Description copied from class: Loader

Get the actual object that is returned in the user-visible result list. This empty implementation merely returns its first argument. This is overridden by some subclasses.

Overrides:

getResultColumnOrRow in class Loader

Throws:

SQLException

HibernateException

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isSingleRowLoader

protected boolean isSingleRowLoader()

Description copied from class: Loader

Return false is this loader is a batch entity loader

Overrides:

isSingleRowLoader in class Loader

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