Package org.pushingpixels.radiance.theming.internal.utils

Class LazyResettableHashMap<T>

java.lang.Object

org.pushingpixels.radiance.theming.internal.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.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LazyResettableHashMap.Key

Field Summary

Fields

Modifier and Type	Field	Description
private static java.util.List<LazyResettableHashMap<?>>	all	List of all existing maps.
private java.util.Map<LazyResettableHashMap.Key,T>	cache	The delegate cache.
private java.lang.String	displayName	Display name of this hash map.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(LazyResettableHashMap.Key key)	Checks whether there is a value associated with the specified key.
private void	createIfNecessary()	Creates the delegate cache if necessary.
T	get(LazyResettableHashMap.Key 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(LazyResettableHashMap.Key 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

Field Detail

all

private static java.util.List<LazyResettableHashMap<?>> all

List of all existing maps.

cache

private java.util.Map<LazyResettableHashMap.Key,T> cache

The delegate cache.

displayName

private java.lang.String displayName

Display name of this hash map. Is used for tracking the statistics.

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

createIfNecessary

private void createIfNecessary()

Creates the delegate cache if necessary.

put

public void put(LazyResettableHashMap.Key key,
                T entry)

Puts a new key-value pair in the map.

Parameters:

key - Pair key.

entry - Pair value.

get

public T get(LazyResettableHashMap.Key key)

Returns the value registered for the specified key.

Parameters:

key - Key.

Returns:

Registered value or null if none.

containsKey

public boolean containsKey(LazyResettableHashMap.Key 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.