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OuterJoinLoader (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.loader
Class OuterJoinLoader

java.lang.Object
  org.hibernate.loader.Loader
      org.hibernate.loader.BasicLoader
          org.hibernate.loader.OuterJoinLoader

Direct Known Subclasses:

AbstractEntityLoader, CollectionElementLoader, CollectionLoader, CriteriaLoader

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public abstract class OuterJoinLoader

extends BasicLoader

Implements logic for walking a tree of associated classes. Generates an SQL select string containing all properties of those classes. Tables are joined using an ANSI-style left outer join.

Author:

Gavin King

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Field Summary
protected  String[]	aliases
protected  int[]	collectionOwners
protected  CollectionPersister[]	collectionPersisters
protected  String[]	collectionSuffixes
protected  LockMode[]	lockModeArray
protected  EntityType[]	ownerAssociationTypes
protected  int[]	owners
protected  Loadable[]	persisters
protected  String	sql
protected  String[]	suffixes

 

Fields inherited from class org.hibernate.loader.BasicLoader

NO_SUFFIX

 

Constructor Summary

OuterJoinLoader(SessionFactoryImplementor factory, Map enabledFilters)

 

Method Summary
protected  String[]	getAliases()           Get the SQL table aliases of entities whose associations are subselect-loadable, returning null if this loader does not support subselect loading
protected  int[]	getCollectionOwners()           Get the index of the entity that owns the collection, or -1 if there is no owner in the query results (ie.
protected  CollectionPersister[]	getCollectionPersisters()           An (optional) persister for a collection to be initialized; only collection loaders return a non-null value
protected  String[]	getCollectionSuffixes()
protected  Dialect	getDialect()
Map	getEnabledFilters()
protected  Loadable[]	getEntityPersisters()           An array of persisters of entity classes contained in each row of results; implemented by all subclasses
protected  LockMode[]	getLockModes(Map lockModes)           What lock mode does this load entities with?
protected  EntityType[]	getOwnerAssociationTypes()           An array of the owner types corresponding to the getOwners() returns.
protected  int[]	getOwners()           An array of indexes of the entity that owns a one-to-one association to the entity at the given index (-1 if there is no "owner").
protected  String	getSQLString()           The SQL query string to be called; implemented by all subclasses
protected  String[]	getSuffixes()
protected  void	initFromWalker(JoinWalker walker)

 

Methods inherited from class org.hibernate.loader.BasicLoader

generateSuffixes, generateSuffixes, getCollectionAliases, getEntityAliases, postInstantiate

 

Methods inherited from class org.hibernate.loader.Loader

applyLocks, autoDiscoverTypes, bindNamedParameters, bindParameterValues, bindPositionalParameters, checkScrollability, doList, getEntityEagerPropertyFetches, getFactory, getNamedParameterLocs, getQueryIdentifier, getResultColumnOrRow, getResultList, getResultSet, hasSubselectLoadableCollections, isSingleRowLoader, isSubselectLoadingEnabled, list, loadCollection, loadCollectionBatch, loadCollectionSubselect, loadEntity, loadEntity, loadEntityBatch, loadSequentialRowsForward, loadSequentialRowsReverse, loadSingleRow, needsFetchingScroll, prepareQueryStatement, preprocessSQL, processFilters, scroll, toString, upgradeLocks

 

Methods inherited from class java.lang.Object

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

 

Field Detail

persisters

protected Loadable[] persisters

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collectionPersisters

protected CollectionPersister[] collectionPersisters

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collectionOwners

protected int[] collectionOwners

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aliases

protected String[] aliases

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lockModeArray

protected LockMode[] lockModeArray

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owners

protected int[] owners

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ownerAssociationTypes

protected EntityType[] ownerAssociationTypes

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sql

protected String sql

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suffixes

protected String[] suffixes

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collectionSuffixes

protected String[] collectionSuffixes

Constructor Detail

OuterJoinLoader

public OuterJoinLoader(SessionFactoryImplementor factory,
                       Map enabledFilters)

Method Detail

getDialect

protected final Dialect getDialect()

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getSuffixes

protected String[] getSuffixes()

Specified by:

getSuffixes in class BasicLoader

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getCollectionSuffixes

protected String[] getCollectionSuffixes()

Specified by:

getCollectionSuffixes in class BasicLoader

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getSQLString

protected final String getSQLString()

Description copied from class: Loader

The SQL query string to be called; implemented by all subclasses

Specified by:

getSQLString in class Loader

Returns:

The sql command this loader should use to get its ResultSet.

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getEntityPersisters

protected final Loadable[] getEntityPersisters()

Description copied from class: Loader

An array of persisters of entity classes contained in each row of results; implemented by all subclasses

Specified by:

getEntityPersisters in class Loader

Returns:

The entity persisters.

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getOwners

protected int[] getOwners()

Description copied from class: Loader

An array of indexes of the entity that owns a one-to-one association to the entity at the given index (-1 if there is no "owner"). The indexes contained here are relative to the result of Loader.getEntityPersisters().

Overrides:

getOwners in class Loader

Returns:

The owner indicators (see discussion above).

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getOwnerAssociationTypes

protected EntityType[] getOwnerAssociationTypes()

Description copied from class: Loader

An array of the owner types corresponding to the Loader.getOwners() returns. Indices indicating no owner would be null here.

Overrides:

getOwnerAssociationTypes in class Loader

Returns:

The types for the owners.

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getLockModes

protected LockMode[] getLockModes(Map lockModes)

Description copied from class: Loader

What lock mode does this load entities with?

Specified by:

getLockModes in class Loader

Parameters:

lockModes - a collection of lock modes specified dynamically via the Query interface

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getEnabledFilters

public Map getEnabledFilters()

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getAliases

protected final String[] getAliases()

Description copied from class: Loader

Get the SQL table aliases of entities whose associations are subselect-loadable, returning null if this loader does not support subselect loading

Overrides:

getAliases in class Loader

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getCollectionPersisters

protected final CollectionPersister[] getCollectionPersisters()

Description copied from class: Loader

An (optional) persister for a collection to be initialized; only collection loaders return a non-null value

Overrides:

getCollectionPersisters in class Loader

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getCollectionOwners

protected final int[] getCollectionOwners()

Description copied from class: Loader

Get the index of the entity that owns the collection, or -1 if there is no owner in the query results (ie. in the case of a collection initializer) or no collection.

Overrides:

getCollectionOwners in class Loader

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initFromWalker

protected void initFromWalker(JoinWalker walker)

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