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EnumeratedMap (jbpm-3.1.3) - JBoss JBPM 3.1.3 API 英文版文档

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org.jbpm.jpdl.el.impl
Class EnumeratedMap

java.lang.Object
  org.jbpm.jpdl.el.impl.EnumeratedMap

All Implemented Interfaces:

java.util.Map

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public abstract class EnumeratedMap
extends java.lang.Object
implements java.util.Map

This is a Map implementation driven by a data source that only provides an enumeration of keys and a getValue(key) method. This class must be subclassed to implement those methods.

Some of the methods may incur a performance penalty that involves enumerating the entire data source. In these cases, the Map will try to save the results of that enumeration, but only if the underlying data source is immutable.

Version:

$Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: tombaeyens $

Author:

Nathan Abramson - Art Technology Group

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Nested Class Summary

 

Nested classes/interfaces inherited from interface java.util.Map
java.util.Map.Entry<K,V>

 

Constructor Summary
EnumeratedMap()

 

Method Summary
void	clear()
boolean	containsKey(java.lang.Object pKey)
boolean	containsValue(java.lang.Object pValue)
java.util.Set	entrySet()
abstract  java.util.Enumeration	enumerateKeys()           Returns an enumeration of the keys
java.lang.Object	get(java.lang.Object pKey)
java.util.Map	getAsMap()           Converts the MapSource to a Map.
abstract  java.lang.Object	getValue(java.lang.Object pKey)           Returns the value associated with the given key, or null if not found.
boolean	isEmpty()
abstract  boolean	isMutable()           Returns true if it is possible for this data source to change
java.util.Set	keySet()
java.lang.Object	put(java.lang.Object pKey, java.lang.Object pValue)
void	putAll(java.util.Map pMap)
java.lang.Object	remove(java.lang.Object pKey)
int	size()
java.util.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

 

Constructor Detail

EnumeratedMap

public EnumeratedMap()

Method Detail

clear

public void clear()

Specified by:

clear in interface java.util.Map

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containsKey

public boolean containsKey(java.lang.Object pKey)

Specified by:

containsKey in interface java.util.Map

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containsValue

public boolean containsValue(java.lang.Object pValue)

Specified by:

containsValue in interface java.util.Map

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entrySet

public java.util.Set entrySet()

Specified by:

entrySet in interface java.util.Map

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get

public java.lang.Object get(java.lang.Object pKey)

Specified by:

get in interface java.util.Map

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isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map

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keySet

public java.util.Set keySet()

Specified by:

keySet in interface java.util.Map

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put

public java.lang.Object put(java.lang.Object pKey,
                            java.lang.Object pValue)

Specified by:

put in interface java.util.Map

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putAll

public void putAll(java.util.Map pMap)

Specified by:

putAll in interface java.util.Map

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remove

public java.lang.Object remove(java.lang.Object pKey)

Specified by:

remove in interface java.util.Map

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size

public int size()

Specified by:

size in interface java.util.Map

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values

public java.util.Collection values()

Specified by:

values in interface java.util.Map

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enumerateKeys

public abstract java.util.Enumeration enumerateKeys()

Returns an enumeration of the keys

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isMutable

public abstract boolean isMutable()

Returns true if it is possible for this data source to change

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getValue

public abstract java.lang.Object getValue(java.lang.Object pKey)

Returns the value associated with the given key, or null if not found.

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getAsMap

public java.util.Map getAsMap()

Converts the MapSource to a Map. If the map is not mutable, this is cached

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Version : jbpm-3.1.3