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

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net.sf.hibernate.util
Class IdentityMap

java.lang.Object
  net.sf.hibernate.util.IdentityMap

All Implemented Interfaces:

Map

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public final class IdentityMap

extends Object

implements Map

A Map where keys are compared by object identity, rather than equals().

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Nested Class Summary
static class	IdentityMap.IdentityKey
static class	IdentityMap.IdentityMapEntry

 

Nested classes inherited from class java.util.Map

Map.Entry

 

Method Summary
void	clear()
static List	concurrentEntries(Map map)           Return the map entries (as instances of Map.Entry in a collection that is safe from concurrent modification).
boolean	containsKey(Object key)
boolean	containsValue(Object val)
static Map	deserialize(Object o)           Workaround for a JDK 1.4.1 bug where IdentityHashMaps are not correctly deserialized.
static List	entries(Map map)
List	entryList()
Set	entrySet()
Object	get(Object key)
static Map	instantiate(int size)           Return a new instance of this class, with an undefined iteration order
static Map	instantiateSequenced(int size)           Return a new instance of this class, with iteration order defined by the order that entries were added
boolean	isEmpty()
Iterator	keyIterator()
static Iterator	keyIterator(Map map)
Set	keySet()
Object	put(Object key, Object value)
void	putAll(Map otherMap)
Object	remove(Object key)
static Object	serialize(Map map)           Workaround for a JDK 1.4.1 bug where IdentityHashMaps are not correctly deserialized.
int	size()
Collection	values()

 

Methods inherited from class java.lang.Object

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

 

Methods inherited from interface java.util.Map

equals, hashCode

 

Method Detail

instantiate

public static Map instantiate(int size)

Return a new instance of this class, with an undefined iteration order

Returns:

Map

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instantiateSequenced

public static Map instantiateSequenced(int size)

Return a new instance of this class, with iteration order defined by the order that entries were added

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concurrentEntries

public static List concurrentEntries(Map map)

Return the map entries (as instances of Map.Entry in a collection that is safe from concurrent modification). ie. we may safely add new instances to the underlying Map during iteration of the entries().

Parameters:

map -

Returns:

Collection

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entries

public static List entries(Map map)

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keyIterator

public static Iterator keyIterator(Map map)

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keyIterator

public Iterator keyIterator()

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size

public int size()

Specified by:

size in interface Map

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isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map

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containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map

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containsValue

public boolean containsValue(Object val)

Specified by:

containsValue in interface Map

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get

public Object get(Object key)

Specified by:

get in interface Map

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put

public Object put(Object key,
                  Object value)

Specified by:

put in interface Map

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remove

public Object remove(Object key)

Specified by:

remove in interface Map

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putAll

public void putAll(Map otherMap)

Specified by:

putAll in interface Map

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clear

public void clear()

Specified by:

clear in interface Map

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keySet

public Set keySet()

Specified by:

keySet in interface Map

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values

public Collection values()

Specified by:

values in interface Map

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entrySet

public Set entrySet()

Specified by:

entrySet in interface Map

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entryList

public List entryList()

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serialize

public static Object serialize(Map map)

Workaround for a JDK 1.4.1 bug where IdentityHashMaps are not correctly deserialized.

Parameters:

map -

Returns:

Object

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deserialize

public static Map deserialize(Object o)

Workaround for a JDK 1.4.1 bug where IdentityHashMaps are not correctly deserialized.

Parameters:

o -

Returns:

Map

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