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PersistentSet (Hibernate API Documentation) - Hibernate 3.2.3 正式版 API 英文文档

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org.hibernate.collection
Class PersistentSet

java.lang.Object
  org.hibernate.collection.AbstractPersistentCollection
      org.hibernate.collection.PersistentSet

All Implemented Interfaces:

Collection, PersistentCollection, Serializable, Set

Direct Known Subclasses:

PersistentSortedSet

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public class PersistentSet

extends AbstractPersistentCollection

implements Set

A persistent wrapper for a java.util.Set. The underlying collection is a HashSet.

Author:

Gavin King

See Also:

HashSet, Serialized Form

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Nested Class Summary

 

Nested classes inherited from class org.hibernate.collection.AbstractPersistentCollection

AbstractPersistentCollection.DelayedOperation

 

Field Summary
protected  Set	set
protected  List	tempList

 

Fields inherited from class org.hibernate.collection.AbstractPersistentCollection

UNKNOWN

 

Constructor Summary

PersistentSet()           Empty constructor.

PersistentSet(SessionImplementor session)           Constructor matching super.

PersistentSet(SessionImplementor session, Set set)           Instantiates a non-lazy set (the underlying set is constructed from the incoming set reference).

 

Method Summary
boolean	add(Object value)
boolean	addAll(Collection coll)
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
void	clear()
boolean	contains(Object object)
boolean	containsAll(Collection coll)
Serializable	disassemble(CollectionPersister persister)           Disassemble the collection, ready for the cache
boolean	empty()           Is the initialized 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 key, int i)           Does an element exist at this entry in the collection?
boolean	equals(Object other)
boolean	equalsSnapshot(CollectionPersister persister)           Does the current state exactly match the snapshot?
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
int	hashCode()
void	initializeFromCache(CollectionPersister persister, Serializable disassembled, Object owner)           Read the state of the collection from a disassembled cached value
boolean	isEmpty()
boolean	isRowUpdatePossible()
boolean	isSnapshotEmpty(Serializable snapshot)           Is the snapshot empty?
boolean	isWrapper(Object collection)           Is this the wrapper for the given underlying collection instance?
Iterator	iterator()
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
boolean	remove(Object value)
boolean	removeAll(Collection coll)
boolean	retainAll(Collection coll)
int	size()
Object[]	toArray()
Object[]	toArray(Object[] array)
String	toString()

 

Methods inherited from class org.hibernate.collection.AbstractPersistentCollection

afterInitialize, afterRowInsert, clearDirty, dirty, forceInitialization, getCachedSize, getIdentifier, getKey, getOrphans, getOwner, getQueuedOrphans, getRole, getSession, getSnapshot, getStoredSnapshot, getValue, hasQueuedOperations, initialize, isClearQueueEnabled, isDirectlyAccessible, isDirty, isOperationQueueEnabled, isPutQueueEnabled, isUnreferenced, needsRecreate, performQueuedOperations, postAction, preInsert, queuedAdditionIterator, queueOperation, read, readElementByIndex, readElementExistence, readIndexExistence, readSize, setCurrentSession, setDirectlyAccessible, setInitialized, setOwner, setSnapshot, unsetSession, wasInitialized, write

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

set

protected Set set

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tempList

protected transient List tempList

Constructor Detail

PersistentSet

public PersistentSet()

Empty constructor.

Note: this form is not ever ever ever used by Hibernate; it is, however, needed for SOAP libraries and other such marshalling code.

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PersistentSet

public PersistentSet(SessionImplementor session)

Constructor matching super. Instantiates a lazy set (the underlying set is un-initialized).

Parameters:

session - The session to which this set will belong.

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PersistentSet

public PersistentSet(SessionImplementor session,
                     Set set)

Instantiates a non-lazy set (the underlying set is constructed from the incoming set reference).

Parameters:

session - The session to which this set will belong.

set - The underlying set data.

Method Detail

getSnapshot

public Serializable getSnapshot(CollectionPersister persister)
                         throws HibernateException

Description copied from interface: PersistentCollection

Return a new snapshot of the current state of the collection

Specified by:

getSnapshot in interface PersistentCollection

Throws:

HibernateException

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getOrphans

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

Description copied from class: AbstractPersistentCollection

get all "orphaned" elements

Specified by:

getOrphans in interface PersistentCollection

Specified by:

getOrphans in class AbstractPersistentCollection

Throws:

HibernateException

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equalsSnapshot

public boolean equalsSnapshot(CollectionPersister persister)
                       throws HibernateException

Description copied from interface: PersistentCollection

Does the current state exactly match the snapshot?

Specified by:

equalsSnapshot in interface PersistentCollection

Throws:

HibernateException

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isSnapshotEmpty

public boolean isSnapshotEmpty(Serializable snapshot)

Description copied from interface: PersistentCollection

Is the snapshot empty?

Specified by:

isSnapshotEmpty in interface PersistentCollection

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beforeInitialize

public void beforeInitialize(CollectionPersister persister,
                             int anticipatedSize)

Description copied from interface: PersistentCollection

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

Specified by:

beforeInitialize in interface PersistentCollection

Parameters:

persister - The underlying collection persister.

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

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initializeFromCache

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

Description copied from interface: PersistentCollection

Read the state of the collection from a disassembled cached value

Specified by:

initializeFromCache in interface PersistentCollection

Throws:

HibernateException

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empty

public boolean empty()

Description copied from class: AbstractPersistentCollection

Is the initialized collection empty?

Specified by:

empty in interface PersistentCollection

Specified by:

empty in class AbstractPersistentCollection

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size

public int size()

Specified by:

size in interface Set

See Also:

Set.size()

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isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Set

See Also:

Set.isEmpty()

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contains

public boolean contains(Object object)

Specified by:

contains in interface Set

See Also:

Set.contains(Object)

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iterator

public Iterator iterator()

Specified by:

iterator in interface Set

See Also:

Set.iterator()

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toArray

public Object[] toArray()

Specified by:

toArray in interface Set

See Also:

Set.toArray()

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toArray

public Object[] toArray(Object[] array)

Specified by:

toArray in interface Set

See Also:

Set.toArray(Object[])

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add

public boolean add(Object value)

Specified by:

add in interface Set

See Also:

Set.add(Object)

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remove

public boolean remove(Object value)

Specified by:

remove in interface Set

See Also:

Set.remove(Object)

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containsAll

public boolean containsAll(Collection coll)

Specified by:

containsAll in interface Set

See Also:

Set.containsAll(Collection)

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addAll

public boolean addAll(Collection coll)

Specified by:

addAll in interface Set

See Also:

Set.addAll(Collection)

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retainAll

public boolean retainAll(Collection coll)

Specified by:

retainAll in interface Set

See Also:

Set.retainAll(Collection)

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removeAll

public boolean removeAll(Collection coll)

Specified by:

removeAll in interface Set

See Also:

Set.removeAll(Collection)

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clear

public void clear()

Specified by:

clear in interface Set

See Also:

Set.clear()

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toString

public String toString()

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readFrom

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

Description copied from interface: PersistentCollection

Read a row from the JDBC result set

Specified by:

readFrom in interface PersistentCollection

Throws:

HibernateException

SQLException

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beginRead

public void beginRead()

Description copied from class: AbstractPersistentCollection

Called just before reading any rows from the JDBC result set

Specified by:

beginRead in interface PersistentCollection

Overrides:

beginRead in class AbstractPersistentCollection

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endRead

public boolean endRead()

Description copied from class: AbstractPersistentCollection

Called after reading all rows from the JDBC result set

Specified by:

endRead in interface PersistentCollection

Overrides:

endRead in class AbstractPersistentCollection

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entries

public Iterator entries(CollectionPersister persister)

Description copied from interface: PersistentCollection

Iterate all collection entries, during update of the database

Specified by:

entries in interface PersistentCollection

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disassemble

public Serializable disassemble(CollectionPersister persister)
                         throws HibernateException

Description copied from interface: PersistentCollection

Disassemble the collection, ready for the cache

Specified by:

disassemble in interface PersistentCollection

Throws:

HibernateException

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getDeletes

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

Description copied from interface: PersistentCollection

Get all the elements that need deleting

Specified by:

getDeletes in interface PersistentCollection

Throws:

HibernateException

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needsInserting

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

Description copied from interface: PersistentCollection

Do we need to insert this element?

Specified by:

needsInserting in interface PersistentCollection

Throws:

HibernateException

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needsUpdating

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

Description copied from interface: PersistentCollection

Do we need to update this element?

Specified by:

needsUpdating in interface PersistentCollection

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isRowUpdatePossible

public boolean isRowUpdatePossible()

Specified by:

isRowUpdatePossible in interface PersistentCollection

Overrides:

isRowUpdatePossible in class AbstractPersistentCollection

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getIndex

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

Description copied from interface: PersistentCollection

Get the index of the given collection entry

Specified by:

getIndex in interface PersistentCollection

Parameters:

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

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getElement

public Object getElement(Object entry)

Description copied from interface: PersistentCollection

Get the value of the given collection entry

Specified by:

getElement in interface PersistentCollection

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getSnapshotElement

public Object getSnapshotElement(Object entry,
                                 int i)

Description copied from interface: PersistentCollection

Get the snapshot value of the given collection entry

Specified by:

getSnapshotElement in interface PersistentCollection

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equals

public boolean equals(Object other)

Specified by:

equals in interface Set

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hashCode

public int hashCode()

Specified by:

hashCode in interface Set

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entryExists

public boolean entryExists(Object key,
                           int i)

Description copied from interface: PersistentCollection

Does an element exist at this entry in the collection?

Specified by:

entryExists in interface PersistentCollection

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isWrapper

public boolean isWrapper(Object collection)

Description copied from interface: PersistentCollection

Is this the wrapper for the given underlying collection instance?

Specified by:

isWrapper in interface PersistentCollection

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