org.jvnet.substance.utils
Class LazyResettableHashMap<T>

java.lang.Object
  org.jvnet.substance.utils.LazyResettableHashMap<T>

Type Parameters:

T - Class for the stored values.

public class LazyResettableHashMap<T>
extends java.lang.Object

Lazily initialized hash map for caching images. Note that this class is not thread safe. In Substance, it is used only from EDT.

Author:

Kirill Grouchnikov

Constructor Summary

LazyResettableHashMap(java.lang.String displayName)
Creates a new hash map.

Method Summary

boolean	containsKey(HashMapKey key) Checks whether there is a value associated with the specified key.
T	get(HashMapKey key) Returns the value registered for the specified key.
static java.util.List<java.lang.String>	getStats() Returns statistical information of the existing hash maps.
void	put(HashMapKey key, T entry) Puts a new key-value pair in the map.
static void	reset() Resets all existing hash maps.
int	size() Returns the number of key-value pairs of this hash map.

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyResettableHashMap

public LazyResettableHashMap(java.lang.String displayName)

Creates a new hash map.

Parameters:

displayName - Display name of the new hash map.

Method Detail

put

public void put(HashMapKey key,
                T entry)

Puts a new key-value pair in the map.

Parameters:

key - Pair key.

entry - Pair value.

get

public T get(HashMapKey key)

Returns the value registered for the specified key.

Parameters:

key - Key.

Returns:

Registered value or null if none.

containsKey

public boolean containsKey(HashMapKey key)

Checks whether there is a value associated with the specified key.

Parameters:

key - Key.

Returns:

true if there is an associated value, false otherwise.

size

public int size()

Returns the number of key-value pairs of this hash map.

Returns:

The number of key-value pairs of this hash map.

reset

public static void reset()

Resets all existing hash maps.

getStats

public static java.util.List<java.lang.String> getStats()

Returns statistical information of the existing hash maps.

Returns:

Statistical information of the existing hash maps.