jodd.cache

Class TypeCache<T>

java.lang.Object

jodd.cache.TypeCache<T>

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

Types cache. Provides several implementations depending on what you need to be addressed. There are two things you should take care off:

• synchronization - especially on storing items. If not synchronized, one instance of an item may be put more then once into the map. This is usually fine, as it happens only during the initialization and makes not harm if something is created twice
• weak - if your key classes are replaced during the runtime, you should use weak map, in order to automatically remove obsolete keys.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TypeCache.Builder<A>

Method Summary

Modifier and Type	Method and Description
void	clear() Clears complete cache.
static <A> TypeCache.Builder<A>	create() Creates a type cache by using a builder.
static <A> TypeCache<A>	createDefault() Creates default implementation of the type cache.
void	forEachValue(java.util.function.Consumer<? super T> valueConsumer) Iterates all cached values.
T	get(java.lang.Class<?> key) Returns value from the map or null if value does not exist.
<K> T	get(java.lang.Class<K> key, java.util.function.Function<java.lang.Class<K>,? extends T> mappingFunction) Returns existing value or add default supplied one.
boolean	isEmpty() Returns true if cache is empty.
T	put(java.lang.Class<?> type, T value) Add values to the map.
T	remove(java.lang.Class<?> type) Removes element from the type cache.
int	size() Returns cache size.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static <A> TypeCache.Builder<A> create()

Creates a type cache by using a builder.

createDefault

public static <A> TypeCache<A> createDefault()

Creates default implementation of the type cache.

put

public T put(java.lang.Class<?> type,
             T value)

Add values to the map.

get

public T get(java.lang.Class<?> key)

Returns value from the map or null if value does not exist.

get

public <K> T get(java.lang.Class<K> key,
                 java.util.function.Function<java.lang.Class<K>,? extends T> mappingFunction)

Returns existing value or add default supplied one. Use this method instead of get-nullcheck-put block when thread-safety is of importance.

remove

public T remove(java.lang.Class<?> type)

Removes element from the type cache.

clear

public void clear()

Clears complete cache.

size

public int size()

Returns cache size.

isEmpty

public boolean isEmpty()

Returns true if cache is empty.

forEachValue

public void forEachValue(java.util.function.Consumer<? super T> valueConsumer)

Iterates all cached values.