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

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net.sf.hibernate.collection
Class Map

java.lang.Object
  net.sf.hibernate.collection.PersistentCollection
      net.sf.hibernate.collection.Map

All Implemented Interfaces:

org.odmg.DMap, Map, Serializable

Direct Known Subclasses:

SortedMap

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public class Map

extends PersistentCollection

implements Map, org.odmg.DMap

A persistent wrapper for a java.util.Map. Underlying collection is a HashMap.

Author:

Gavin King

See Also:

HashMap, Serialized Form

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Nested Class Summary

 

Nested classes inherited from class java.util.Map

Map.Entry

 

Constructor Summary

Map()

Map(SessionImplementor session)

Map(SessionImplementor session, Map map)

 

Method Summary
void	beforeInitialize(CollectionPersister persister)           Called before any elements are read into the collection, allowing appropriate initializations to occur.
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Serializable	disassemble(CollectionPersister persister)           Disassemble the collection, ready for the cache
boolean	empty()           Is the initialized collection empty?
Iterator	entries()           Iterate all collection entries, during update of the database
boolean	entryExists(Object entry, int i)           Does an element exist at this entry in the collection?
Set	entrySet()
boolean	equals(Object other)
boolean	equalsSnapshot(Type elementType)           Does the current state exactly match the snapshot?
Object	get(Object key)
Iterator	getDeletes(Type elemType)           Get all the elements that need deleting
Object	getIndex(Object entry, int i)           Get the index of the given collection entry
Collection	getOrphans(Serializable snapshot)           get all "orphaned" elements
int	hashCode()
void	initializeFromCache(CollectionPersister persister, Serializable disassembled, Object owner)           Read the state of the collection from a disassembled cached value
boolean	isEmpty()
boolean	isWrapper(Object collection)           Is this the wrapper for the given underlying collection instance?
Set	keySet()
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	put(Object key, Object value)
void	putAll(Map puts)
Object	readFrom(ResultSet rs, CollectionPersister persister, Object owner)           Read a row from the JDBC result set
Object	remove(Object key)
int	size()
protected  Serializable	snapshot(CollectionPersister persister)           Return a new snapshot of the current state
String	toString()
Collection	values()
void	writeTo(PreparedStatement st, CollectionPersister persister, Object entry, int i, boolean writeOrder)           Write a row to the JDBC prepared statement

 

Methods inherited from class net.sf.hibernate.collection.PersistentCollection

afterRowInsert, beginRead, delayedAddAll, endRead, forceInitialization, getCollectionSnapshot, getOrphans, getSession, getSnapshot, getSnapshot, getValue, hasQueuedAdditions, initialize, isDirectlyAccessible, needsRecreate, postFlush, preInsert, queueAdd, queueAddAll, queuedAdditionIterator, read, setCollectionSnapshot, setCurrentSession, setDirectlyAccessible, setInitialized, unsetSession, wasInitialized, write

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

Map

public Map(SessionImplementor session)

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Map

public Map()

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Map

public Map(SessionImplementor session,
           Map map)

Method Detail

snapshot

protected Serializable snapshot(CollectionPersister persister)
                         throws HibernateException

Description copied from class: PersistentCollection

Return a new snapshot of the current state

Specified by:

snapshot in class PersistentCollection

Throws:

HibernateException

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getOrphans

public Collection getOrphans(Serializable snapshot)
                      throws HibernateException

Description copied from class: PersistentCollection

get all "orphaned" elements

Specified by:

getOrphans in class PersistentCollection

Throws:

HibernateException

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equalsSnapshot

public boolean equalsSnapshot(Type elementType)
                       throws HibernateException

Description copied from class: PersistentCollection

Does the current state exactly match the snapshot?

Specified by:

equalsSnapshot in class PersistentCollection

Throws:

HibernateException

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isWrapper

public boolean isWrapper(Object collection)

Description copied from class: PersistentCollection

Is this the wrapper for the given underlying collection instance?

Specified by:

isWrapper in class PersistentCollection

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beforeInitialize

public void beforeInitialize(CollectionPersister persister)

Description copied from class: PersistentCollection

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

Specified by:

beforeInitialize in class PersistentCollection

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size

public int size()

Specified by:

size in interface Map

See Also:

Map.size()

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isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map

See Also:

Map.isEmpty()

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containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map

See Also:

Map.containsKey(Object)

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containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map

See Also:

Map.containsValue(Object)

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get

public Object get(Object key)

Specified by:

get in interface Map

See Also:

Map.get(Object)

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put

public Object put(Object key,
                  Object value)

Specified by:

put in interface Map

See Also:

Map.put(Object, Object)

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remove

public Object remove(Object key)

Specified by:

remove in interface Map

See Also:

Map.remove(Object)

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putAll

public void putAll(Map puts)

Specified by:

putAll in interface Map

See Also:

Map.putAll(java.util.Map puts)

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clear

public void clear()

Specified by:

clear in interface Map

See Also:

Map.clear()

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keySet

public Set keySet()

Specified by:

keySet in interface Map

See Also:

Map.keySet()

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values

public Collection values()

Specified by:

values in interface Map

See Also:

Map.values()

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entrySet

public Set entrySet()

Specified by:

entrySet in interface Map

See Also:

Map.entrySet()

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empty

public boolean empty()

Description copied from class: PersistentCollection

Is the initialized collection empty?

Specified by:

empty in class PersistentCollection

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toString

public String toString()

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writeTo

public void writeTo(PreparedStatement st,
                    CollectionPersister persister,
                    Object entry,
                    int i,
                    boolean writeOrder)
             throws HibernateException,
                    SQLException

Description copied from class: PersistentCollection

Write a row to the JDBC prepared statement

Specified by:

writeTo in class PersistentCollection

Throws:

HibernateException

SQLException

See Also:

PersistentCollection.writeTo(PreparedStatement, CollectionPersister, Object, int, boolean)

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readFrom

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

Description copied from class: PersistentCollection

Read a row from the JDBC result set

Specified by:

readFrom in class PersistentCollection

Throws:

HibernateException

SQLException

See Also:

PersistentCollection.readFrom(ResultSet, CollectionPersister, Object)

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entries

public Iterator entries()

Description copied from class: PersistentCollection

Iterate all collection entries, during update of the database

Specified by:

entries in class PersistentCollection

See Also:

PersistentCollection.entries()

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initializeFromCache

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

Description copied from class: PersistentCollection

Read the state of the collection from a disassembled cached value

Specified by:

initializeFromCache in class PersistentCollection

Throws:

HibernateException

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disassemble

public Serializable disassemble(CollectionPersister persister)
                         throws HibernateException

Description copied from class: PersistentCollection

Disassemble the collection, ready for the cache

Specified by:

disassemble in class PersistentCollection

Throws:

HibernateException

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getDeletes

public Iterator getDeletes(Type elemType)
                    throws HibernateException

Description copied from class: PersistentCollection

Get all the elements that need deleting

Specified by:

getDeletes in class PersistentCollection

Throws:

HibernateException

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needsInserting

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

Description copied from class: PersistentCollection

Do we need to insert this element?

Specified by:

needsInserting in class PersistentCollection

Throws:

HibernateException

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needsUpdating

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

Description copied from class: PersistentCollection

Do we need to update this element?

Specified by:

needsUpdating in class PersistentCollection

Throws:

HibernateException

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getIndex

public Object getIndex(Object entry,
                       int i)

Description copied from class: PersistentCollection

Get the index of the given collection entry

Specified by:

getIndex in class PersistentCollection

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equals

public boolean equals(Object other)

Specified by:

equals in interface Map

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hashCode

public int hashCode()

Specified by:

hashCode in interface Map

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entryExists

public boolean entryExists(Object entry,
                           int i)

Description copied from class: PersistentCollection

Does an element exist at this entry in the collection?

Specified by:

entryExists in class PersistentCollection

See Also:

PersistentCollection.entryExists(java.lang.Object, int)

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