程序包 org.hibernate.collection.internal

类 PersistentArrayHolder

java.lang.Object

org.hibernate.collection.internal.AbstractPersistentCollection

org.hibernate.collection.internal.PersistentArrayHolder

所有已实现的接口:

Serializable, PersistentCollection

public class PersistentArrayHolder
extends AbstractPersistentCollection

A persistent wrapper for an array. Lazy initialization is NOT supported. Use of Hibernate arrays is not really recommended.

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 Object	array

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
PersistentArrayHolder(SessionImplementor session, Object array)	已过时。 PersistentArrayHolder(SharedSessionContractImplementor, Object) should be used instead.
PersistentArrayHolder(SessionImplementor session, CollectionPersister persister)	已过时。 PersistentArrayHolder(SharedSessionContractImplementor, CollectionPersister) should be used instead.
PersistentArrayHolder(SharedSessionContractImplementor session, Object array)	Constructs a PersistentCollection instance for holding an array.
PersistentArrayHolder(SharedSessionContractImplementor session, CollectionPersister persister)	Constructs a PersistentCollection instance for holding an array.

方法概要

修饰符和类型	方法	说明
void	beforeInitialize(CollectionPersister persister, int anticipatedSize)	Called before any elements are read into the collection, allowing appropriate initializations to occur.
void	beginRead()	Called just before reading any rows from the JDBC result set
Serializable	disassemble(CollectionPersister persister)	Disassemble the collection to get it ready for the cache
Iterator	elements()	Get an iterator over the array elements
boolean	empty()	Is the collection empty?
boolean	endRead()	Called after reading all rows from the JDBC result set
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	getArray()
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	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
Object	getValue()	Return the user-visible collection (or array) instance
void	initializeFromCache(CollectionPersister persister, Serializable disassembled, Object owner)	Read the state of the collection from a disassembled cached value
boolean	isDirectlyAccessible()	Could the application possibly have a direct reference to the underlying collection implementation?
boolean	isSnapshotEmpty(Serializable snapshot)	Is the snapshot empty?
boolean	isWrapper(Object collection)	Is this the wrapper for the given collection instance?
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?
Object	readFrom(ResultSet rs, CollectionPersister persister, CollectionAliases descriptor, Object owner)	Read a row from the JDBC result set

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

afterInitialize, afterRowInsert, clearDirty, clearOperationQueue, dirty, forceInitialization, getCachedSize, getIdentifier, getKey, getOrphans, getOwner, getQueuedOrphans, getRole, getSession, getSnapshot, getStoredSnapshot, hasQueuedOperations, identityRemove, identityRemove, initialize, isClearQueueEnabled, isConnectedToSession, isDirty, isElementRemoved, isInitialized, isInverseCollection, isInverseCollectionNoOrphanDelete, isInverseOneToManyOrNoOrphanDelete, isOperationQueueEnabled, isPutQueueEnabled, isRowUpdatePossible, isUnreferenced, needsRecreate, performQueuedOperations, postAction, preInsert, 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 org.hibernate.collection.spi.PersistentCollection

isDirectlyProvidedCollection

字段详细资料

array

protected Object array

构造器详细资料

PersistentArrayHolder

public PersistentArrayHolder(SharedSessionContractImplementor session,
                             Object array)

Constructs a PersistentCollection instance for holding an array.

参数:

session - The session

array - The array (the persistent "collection").

PersistentArrayHolder

@Deprecated
public PersistentArrayHolder(SessionImplementor session,
                             Object array)

已过时。

PersistentArrayHolder(SharedSessionContractImplementor, Object) should be used instead.

Constructs a PersistentCollection instance for holding an array.

参数:

session - The session

array - The array (the persistent "collection").

PersistentArrayHolder

public PersistentArrayHolder(SharedSessionContractImplementor session,
                             CollectionPersister persister)

Constructs a PersistentCollection instance for holding an array.

参数:

session - The session

persister - The persister for the array

PersistentArrayHolder

@Deprecated
public PersistentArrayHolder(SessionImplementor session,
                             CollectionPersister persister)

已过时。

PersistentArrayHolder(SharedSessionContractImplementor, CollectionPersister) should be used instead.

Constructs a PersistentCollection instance for holding an array.

参数:

session - The session

persister - The persister for the array

方法详细资料

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

参数:

persister - The collection persister

返回:

The snapshot

抛出:

HibernateException

isSnapshotEmpty

public boolean isSnapshotEmpty(Serializable snapshot)

从接口复制的说明: PersistentCollection

Is the snapshot empty?

参数:

snapshot - The snapshot to check

返回:

true if the given snapshot is empty

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

getArray

public Object getArray()

isWrapper

public boolean isWrapper(Object collection)

从接口复制的说明: PersistentCollection

Is this the wrapper for the given collection instance?

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.

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?

参数:

persister - The collection persister

返回:

true if the current state and the snapshot state match.

抛出:

HibernateException

elements

public Iterator elements()

Get an iterator over the array elements

返回:

The iterator

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.

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

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

entries

public Iterator entries(CollectionPersister persister)

从接口复制的说明: PersistentCollection

Iterate all collection entries, during update of the database

参数:

persister - The collection persister.

返回:

The iterator

beginRead

public void beginRead()

从接口复制的说明: PersistentCollection

Called just before reading any rows from the JDBC result set

指定者:

beginRead 在接口中 PersistentCollection

覆盖:

beginRead 在类中 AbstractPersistentCollection

endRead

public boolean endRead()

从接口复制的说明: PersistentCollection

Called after reading all rows from the JDBC result set

指定者:

endRead 在接口中 PersistentCollection

覆盖:

endRead 在类中 AbstractPersistentCollection

返回:

Whether to end the read.

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.

参数:

persister - The underlying collection persister.

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

isDirectlyAccessible

public boolean isDirectlyAccessible()

从接口复制的说明: PersistentCollection

Could the application possibly have a direct reference to the underlying collection implementation?

指定者:

isDirectlyAccessible 在接口中 PersistentCollection

覆盖:

isDirectlyAccessible 在类中 AbstractPersistentCollection

返回:

true indicates that the application might have access to the underlying collection/array.

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

参数:

persister - The collection persister

disassembled - The disassembled cached state

owner - The collection owner

抛出:

HibernateException

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

参数:

persister - The collection persister

返回:

The disassembled state

抛出:

HibernateException

getValue

public Object getValue()

从接口复制的说明: PersistentCollection

Return the user-visible collection (or array) instance

指定者:

getValue 在接口中 PersistentCollection

覆盖:

getValue 在类中 AbstractPersistentCollection

返回:

The underlying collection/array

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

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

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?

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?

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

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

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.

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

参数:

entry - The entry

i - The index

返回:

The snapshot state for that element

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?

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