org.apache.pivot.wtk

Class ApplicationContext.ResourceCacheDictionary

java.lang.Object

org.apache.pivot.wtk.ApplicationContext.ResourceCacheDictionary

All Implemented Interfaces:

Iterable<URL>, Dictionary<URL,Object>

Enclosing class:

ApplicationContext

public static final class ApplicationContext.ResourceCacheDictionary
extends Object
implements Dictionary<URL,Object>, Iterable<URL>

Resource cache dictionary implementation.

Note that this implementation does not have a way to limiting the number of elements to contain, so the cache continues to grow; to keep it small you have to manually remove old elements from it when they are no more necessary.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.pivot.collections.Dictionary

Dictionary.Pair<K,V>

Method Summary

Methods

Modifier and Type	Method and Description
boolean	containsKey(URL key) Tests the existence of a key in the dictionary.
Object	get(URL key) Retrieves the value for the given key.
int	getCount()
Iterator<URL>	iterator()
Object	put(URL key, Object value) Sets the value of the given key, creating a new entry or replacing the existing value.
Object	remove(URL key) Removes a key/value pair from the map.

Methods inherited from class java.lang.Object

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

Method Detail

get

public Object get(URL key)

Description copied from interface: Dictionary

Retrieves the value for the given key.

Specified by:

get in interface Dictionary<URL,Object>

Parameters:

key - The key whose value is to be returned.

Returns:

The value corresponding to key, or null if the key does not exist. Will also return null if the key refers to a null value. Use containsKey() to distinguish between these two cases.

put

public Object put(URL key,
         Object value)

Description copied from interface: Dictionary

Sets the value of the given key, creating a new entry or replacing the existing value.

Specified by:

put in interface Dictionary<URL,Object>

Parameters:

key - The key whose value is to be set.

value - The value to be associated with the given key.

Returns:

The value previously associated with the key.

remove

public Object remove(URL key)

Description copied from interface: Dictionary

Removes a key/value pair from the map.

Specified by:

remove in interface Dictionary<URL,Object>

Parameters:

key - The key whose mapping is to be removed.

Returns:

The value that was removed.

containsKey

public boolean containsKey(URL key)

Description copied from interface: Dictionary

Tests the existence of a key in the dictionary.

Specified by:

containsKey in interface Dictionary<URL,Object>

Parameters:

key - The key whose presence in the dictionary is to be tested.

Returns:

true if the key exists in the dictionary; false, otherwise.

iterator

public Iterator<URL> iterator()

Specified by:

iterator in interface Iterable<URL>

getCount

public int getCount()