程序包 org.hibernate.collection.internal

类 PersistentIdentifierBag

java.lang.Object

org.hibernate.collection.internal.AbstractPersistentCollection

org.hibernate.collection.internal.PersistentIdentifierBag

所有已实现的接口:

Serializable, Iterable, Collection, List, PersistentCollection

public class PersistentIdentifierBag
extends AbstractPersistentCollection
implements List

An IdentifierBag implements "bag" semantics more efficiently than a regular Bag by adding a synthetic identifier column to the table. This identifier is unique for all rows in the table, allowing very efficient updates and deletes. The value of the identifier is never exposed to the application.

IdentifierBags may not be used for a many-to-one association. Furthermore, there is no reason to use inverse="true".

作者:

Gavin King

另请参阅:

序列化表格

嵌套类概要

从类继承的嵌套类/接口 org.hibernate.collection.internal.AbstractPersistentCollection

AbstractPersistentCollection.AbstractValueDelayedOperation, AbstractPersistentCollection.DelayedOperation, AbstractPersistentCollection.IteratorProxy, AbstractPersistentCollection.LazyInitializationWork<T>, AbstractPersistentCollection.ListIteratorProxy, AbstractPersistentCollection.ListProxy, AbstractPersistentCollection.SetProxy, AbstractPersistentCollection.ValueDelayedOperation

字段概要

字段

修饰符和类型	字段	说明
protected Map<Integer,Object>	identifiers
protected List<Object>	values

从类继承的字段 org.hibernate.collection.internal.AbstractPersistentCollection

elementRemoved, UNKNOWN

构造器概要

构造器

构造器	说明
PersistentIdentifierBag()	Constructs a PersistentIdentifierBag.
PersistentIdentifierBag(SessionImplementor session)	已过时。 PersistentIdentifierBag(SharedSessionContractImplementor) should be used instead.
PersistentIdentifierBag(SessionImplementor session, Collection coll)	已过时。 PersistentIdentifierBag(SharedSessionContractImplementor, Collection) should be used instead.
PersistentIdentifierBag(SharedSessionContractImplementor session)	Constructs a PersistentIdentifierBag.
PersistentIdentifierBag(SharedSessionContractImplementor session, Collection coll)	Constructs a PersistentIdentifierBag.

方法概要

修饰符和类型	方法	说明
void	add(int index, Object element)
boolean	add(Object o)
boolean	addAll(int index, Collection c)
boolean	addAll(Collection c)
void	afterRowInsert(CollectionPersister persister, Object entry, int i)	Called after inserting a row, to fetch the natively generated id
void	beforeInitialize(CollectionPersister persister, int anticipatedSize)	Called before any elements are read into the collection, allowing appropriate initializations to occur.
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection c)
Serializable	disassemble(CollectionPersister persister)	Disassemble the collection to get it ready for the cache
boolean	empty()	Is the collection empty?
Iterator	entries(CollectionPersister persister)	Iterate all collection entries, during update of the database
boolean	entryExists(Object entry, int i)	Does the given element/entry exist in the collection?
boolean	equalsSnapshot(CollectionPersister persister)	Does the current state exactly match the snapshot?
Object	get(int index)
Iterator	getDeletes(CollectionPersister persister, boolean indexIsFormula)	Get all the elements that need deleting
Object	getElement(Object entry)	Get the value of the given collection entry.
Object	getIdentifier(Object entry, int i)	Get the identifier of the given collection entry.
Object	getIndex(Object entry, int i, CollectionPersister persister)	Get the index of the given collection entry
Collection	getOrphans(Serializable snapshot, String entityName)	get all "orphaned" elements
Serializable	getSnapshot(CollectionPersister persister)	Return a new snapshot of the current state of the collection
Object	getSnapshotElement(Object entry, int i)	Get the snapshot value of the given collection entry
int	indexOf(Object o)
void	initializeFromCache(CollectionPersister persister, Serializable disassembled, Object owner)	Read the state of the collection from a disassembled cached value
boolean	isDirectlyProvidedCollection(Object collection)	Was collection provided directly to this PersistentCollection (i.e., provided as an argument to a constructor)?
boolean	isEmpty()
boolean	isSnapshotEmpty(Serializable snapshot)	Is the snapshot empty?
boolean	isWrapper(Object collection)	Is this the wrapper for the given collection instance?
Iterator	iterator()
int	lastIndexOf(Object o)
ListIterator	listIterator()
ListIterator	listIterator(int index)
boolean	needsInserting(Object entry, int i, Type elemType)	Do we need to insert this element?
boolean	needsUpdating(Object entry, int i, Type elemType)	Do we need to update this element?
void	preInsert(CollectionPersister persister)	Called before inserting rows, to ensure that any surrogate keys are fully generated
Object	readFrom(ResultSet rs, CollectionPersister persister, CollectionAliases descriptor, Object owner)	Read a row from the JDBC result set
Object	remove(int index)
boolean	remove(Object o)
boolean	removeAll(Collection c)
boolean	retainAll(Collection c)
Object	set(int index, Object element)
int	size()
List	subList(int fromIndex, int toIndex)
Object[]	toArray()
Object[]	toArray(Object[] a)

从类继承的方法 org.hibernate.collection.internal.AbstractPersistentCollection

afterInitialize, beginRead, clearDirty, clearOperationQueue, dirty, endRead, forceInitialization, getCachedSize, getKey, getOrphans, getOwner, getQueuedOrphans, getRole, getSession, getSnapshot, getStoredSnapshot, getValue, hasQueuedOperations, identityRemove, identityRemove, initialize, isClearQueueEnabled, isConnectedToSession, isDirectlyAccessible, isDirty, isElementRemoved, isInitialized, isInverseCollection, isInverseCollectionNoOrphanDelete, isInverseOneToManyOrNoOrphanDelete, isOperationQueueEnabled, isPutQueueEnabled, isRowUpdatePossible, isUnreferenced, needsRecreate, performQueuedOperations, postAction, prepareForPossibleLoadingOutsideTransaction, queuedAdditionIterator, queueOperation, read, readElementByIndex, readElementExistence, readIndexExistence, readSize, replaceQueuedOperationValues, setCurrentSession, setDirectlyAccessible, setInitialized, setOwner, setSnapshot, unsetSession, wasInitialized, write

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.Collection

parallelStream, removeIf, stream, toArray

从接口继承的方法 java.lang.Iterable

forEach

从接口继承的方法 java.util.List

equals, hashCode, replaceAll, sort, spliterator

字段详细资料

values

protected List<Object> values

identifiers

protected Map<Integer,Object> identifiers

构造器详细资料

PersistentIdentifierBag

public PersistentIdentifierBag()

Constructs a PersistentIdentifierBag. This form needed for SOAP libraries, etc

PersistentIdentifierBag

public PersistentIdentifierBag(SharedSessionContractImplementor session)

Constructs a PersistentIdentifierBag.

参数:

session - The session

PersistentIdentifierBag

@Deprecated
public PersistentIdentifierBag(SessionImplementor session)

已过时。

PersistentIdentifierBag(SharedSessionContractImplementor) should be used instead.

Constructs a PersistentIdentifierBag.

参数:

session - The session

PersistentIdentifierBag

public PersistentIdentifierBag(SharedSessionContractImplementor session,
                               Collection coll)

Constructs a PersistentIdentifierBag.

参数:

session - The session

coll - The base elements

PersistentIdentifierBag

@Deprecated
public PersistentIdentifierBag(SessionImplementor session,
                               Collection coll)

已过时。

PersistentIdentifierBag(SharedSessionContractImplementor, Collection) should be used instead.

Constructs a PersistentIdentifierBag.

参数:

session - The session

coll - The base elements

方法详细资料

initializeFromCache

public void initializeFromCache(CollectionPersister persister,
                                Serializable disassembled,
                                Object owner)
                         throws HibernateException

从接口复制的说明: PersistentCollection

Read the state of the collection from a disassembled cached value

指定者:

initializeFromCache 在接口中 PersistentCollection

参数:

persister - The collection persister

disassembled - The disassembled cached state

owner - The collection owner

抛出:

HibernateException

getIdentifier

public Object getIdentifier(Object entry,
                            int i)

从接口复制的说明: PersistentCollection

Get the identifier of the given collection entry. This refers to the collection identifier, not the identifier of the (possibly) entity elements. This is only valid for invocation on the idbag collection.

指定者:

getIdentifier 在接口中 PersistentCollection

覆盖:

getIdentifier 在类中 AbstractPersistentCollection

参数:

entry - The collection entry/element

i - The assumed identifier (?)

返回:

The identifier value

isWrapper

public boolean isWrapper(Object collection)

从接口复制的说明: PersistentCollection

Is this the wrapper for the given collection instance?

指定者:

isWrapper 在接口中 PersistentCollection

参数:

collection - The collection to check whether this is wrapping it

返回:

true if this is a wrapper around that given collection instance.

isDirectlyProvidedCollection

public boolean isDirectlyProvidedCollection(Object collection)

从接口复制的说明: PersistentCollection

Was collection provided directly to this PersistentCollection (i.e., provided as an argument to a constructor)?

Implementors that can copy elements out of a directly provided collection into the wrapped collection should override this method.

指定者:

isDirectlyProvidedCollection 在接口中 PersistentCollection

参数:

collection - The collection

返回:

true, if collection was provided directly to this PersistentCollection; false, otherwise.

add

public boolean add(Object o)

指定者:

add 在接口中 Collection

指定者:

add 在接口中 List

clear

public void clear()

指定者:

clear 在接口中 Collection

指定者:

clear 在接口中 List

contains

public boolean contains(Object o)

指定者:

contains 在接口中 Collection

指定者:

contains 在接口中 List

containsAll

public boolean containsAll(Collection c)

指定者:

containsAll 在接口中 Collection

指定者:

containsAll 在接口中 List

isEmpty

public boolean isEmpty()

指定者:

isEmpty 在接口中 Collection

指定者:

isEmpty 在接口中 List

iterator

public Iterator iterator()

指定者:

iterator 在接口中 Collection

指定者:

iterator 在接口中 Iterable

指定者:

iterator 在接口中 List

remove

public boolean remove(Object o)

指定者:

remove 在接口中 Collection

指定者:

remove 在接口中 List

removeAll

public boolean removeAll(Collection c)

指定者:

removeAll 在接口中 Collection

指定者:

removeAll 在接口中 List

retainAll

public boolean retainAll(Collection c)

指定者:

retainAll 在接口中 Collection

指定者:

retainAll 在接口中 List

size

public int size()

指定者:

size 在接口中 Collection

指定者:

size 在接口中 List

toArray

public Object[] toArray()

指定者:

toArray 在接口中 Collection

指定者:

toArray 在接口中 List

toArray

public Object[] toArray(Object[] a)

指定者:

toArray 在接口中 Collection

指定者:

toArray 在接口中 List

beforeInitialize

public void beforeInitialize(CollectionPersister persister,
                             int anticipatedSize)

从接口复制的说明: PersistentCollection

Called before any elements are read into the collection, allowing appropriate initializations to occur.

指定者:

beforeInitialize 在接口中 PersistentCollection

参数:

persister - The underlying collection persister.

anticipatedSize - The anticipated size of the collection after initialization is complete.

disassemble

public Serializable disassemble(CollectionPersister persister)
                         throws HibernateException

从接口复制的说明: PersistentCollection

Disassemble the collection to get it ready for the cache

指定者:

disassemble 在接口中 PersistentCollection

参数:

persister - The collection persister

返回:

The disassembled state

抛出:

HibernateException

empty

public boolean empty()

从接口复制的说明: PersistentCollection

Is the collection empty? (don't try to initialize the collection)

指定者:

empty 在接口中 PersistentCollection

指定者:

empty 在类中 AbstractPersistentCollection

返回:

false if the collection is non-empty; true otherwise.

entries

public Iterator entries(CollectionPersister persister)

从接口复制的说明: PersistentCollection

Iterate all collection entries, during update of the database

指定者:

entries 在接口中 PersistentCollection

参数:

persister - The collection persister.

返回:

The iterator

entryExists

public boolean entryExists(Object entry,
                           int i)

从接口复制的说明: PersistentCollection

Does the given element/entry exist in the collection?

指定者:

entryExists 在接口中 PersistentCollection

参数:

entry - The object to check if it exists as a collection element

i - Unused

返回:

true if the given entry is a collection element

equalsSnapshot

public boolean equalsSnapshot(CollectionPersister persister)
                       throws HibernateException

从接口复制的说明: PersistentCollection

Does the current state exactly match the snapshot?

指定者:

equalsSnapshot 在接口中 PersistentCollection

参数:

persister - The collection persister

返回:

true if the current state and the snapshot state match.

抛出:

HibernateException

isSnapshotEmpty

public boolean isSnapshotEmpty(Serializable snapshot)

从接口复制的说明: PersistentCollection

Is the snapshot empty?

指定者:

isSnapshotEmpty 在接口中 PersistentCollection

参数:

snapshot - The snapshot to check

返回:

true if the given snapshot is empty

getDeletes

public Iterator getDeletes(CollectionPersister persister,
                           boolean indexIsFormula)
                    throws HibernateException

从接口复制的说明: PersistentCollection

Get all the elements that need deleting

指定者:

getDeletes 在接口中 PersistentCollection

参数:

persister - The collection persister

indexIsFormula - For indexed collections, tells whether the index is a formula (calculated value) mapping

返回:

An iterator over the elements to delete

抛出:

HibernateException

getIndex

public Object getIndex(Object entry,
                       int i,
                       CollectionPersister persister)

从接口复制的说明: PersistentCollection

Get the index of the given collection entry

指定者:

getIndex 在接口中 PersistentCollection

参数:

entry - The collection entry/element

i - The assumed index

persister - it was more elegant before we added this...

返回:

The index value

getElement

public Object getElement(Object entry)

从接口复制的说明: PersistentCollection

Get the value of the given collection entry. Generally the given entry parameter value will just be returned. Might get a different value for a duplicate entries in a Set.

指定者:

getElement 在接口中 PersistentCollection

参数:

entry - The object instance for which to get the collection element instance.

返回:

The corresponding object that is part of the collection elements.

getSnapshotElement

public Object getSnapshotElement(Object entry,
                                 int i)

从接口复制的说明: PersistentCollection

Get the snapshot value of the given collection entry

指定者:

getSnapshotElement 在接口中 PersistentCollection

参数:

entry - The entry

i - The index

返回:

The snapshot state for that element

needsInserting

public boolean needsInserting(Object entry,
                              int i,
                              Type elemType)
                       throws HibernateException

从接口复制的说明: PersistentCollection

Do we need to insert this element?

指定者:

needsInserting 在接口中 PersistentCollection

参数:

entry - The collection element to check

i - The index (for indexed collections)

elemType - The type for the element

返回:

true if the element needs inserting

抛出:

HibernateException

needsUpdating

public boolean needsUpdating(Object entry,
                             int i,
                             Type elemType)
                      throws HibernateException

从接口复制的说明: PersistentCollection

Do we need to update this element?

指定者:

needsUpdating 在接口中 PersistentCollection

参数:

entry - The collection element to check

i - The index (for indexed collections)

elemType - The type for the element

返回:

true if the element needs updating

抛出:

HibernateException

readFrom

public Object readFrom(ResultSet rs,
                       CollectionPersister persister,
                       CollectionAliases descriptor,
                       Object owner)
                throws HibernateException,
                       SQLException

从接口复制的说明: PersistentCollection

Read a row from the JDBC result set

指定者:

readFrom 在接口中 PersistentCollection

参数:

rs - The JDBC ResultSet

persister - The collection role

descriptor - The aliases used for the columns making up the collection

owner - The collection owner

返回:

The read object

抛出:

HibernateException - Generally indicates a problem resolving data read from the ResultSet

SQLException - Indicates a problem accessing the ResultSet

getSnapshot

public Serializable getSnapshot(CollectionPersister persister)
                         throws HibernateException

从接口复制的说明: PersistentCollection

Return a new snapshot of the current state of the collection

指定者:

getSnapshot 在接口中 PersistentCollection

参数:

persister - The collection persister

返回:

The snapshot

抛出:

HibernateException

getOrphans

public Collection getOrphans(Serializable snapshot,
                             String entityName)
                      throws HibernateException

从接口复制的说明: PersistentCollection

get all "orphaned" elements

指定者:

getOrphans 在接口中 PersistentCollection

指定者:

getOrphans 在类中 AbstractPersistentCollection

参数:

snapshot - The snapshot state

entityName - The name of the entity that are the elements of the collection

返回:

The orphans

抛出:

HibernateException

preInsert

public void preInsert(CollectionPersister persister)
               throws HibernateException

从接口复制的说明: PersistentCollection

Called before inserting rows, to ensure that any surrogate keys are fully generated

指定者:

preInsert 在接口中 PersistentCollection

覆盖:

preInsert 在类中 AbstractPersistentCollection

参数:

persister - The collection persister

抛出:

HibernateException

add

public void add(int index,
                Object element)

指定者:

add 在接口中 List

addAll

public boolean addAll(int index,
                      Collection c)

指定者:

addAll 在接口中 List

get

public Object get(int index)

指定者:

get 在接口中 List

indexOf

public int indexOf(Object o)

指定者:

indexOf 在接口中 List

lastIndexOf

public int lastIndexOf(Object o)

指定者:

lastIndexOf 在接口中 List

listIterator

public ListIterator listIterator()

指定者:

listIterator 在接口中 List

listIterator

public ListIterator listIterator(int index)

指定者:

listIterator 在接口中 List

remove

public Object remove(int index)

指定者:

remove 在接口中 List

set

public Object set(int index,
                  Object element)

指定者:

set 在接口中 List

subList

public List subList(int fromIndex,
                    int toIndex)

指定者:

subList 在接口中 List

addAll

public boolean addAll(Collection c)

指定者:

addAll 在接口中 Collection

指定者:

addAll 在接口中 List

afterRowInsert

public void afterRowInsert(CollectionPersister persister,
                           Object entry,
                           int i)
                    throws HibernateException

从接口复制的说明: PersistentCollection

Called after inserting a row, to fetch the natively generated id

指定者:

afterRowInsert 在接口中 PersistentCollection

覆盖:

afterRowInsert 在类中 AbstractPersistentCollection

参数:

persister - The collection persister

entry - The collection element just inserted

i - The element position/index

抛出:

HibernateException