io.requery

Interface EntityCache

All Known Implementing Classes:

EmptyEntityCache, LayeredEntityCache, SerializableEntityCache, WeakEntityCache

public interface EntityCache

Cache of entity objects.

Method Summary

Modifier and Type	Method and Description
void	clear() Evict all references from the cache.
boolean	contains(Class<?> type, Object key) Check if a reference to an entity exists.
<T> T	get(Class<T> type, Object key) Retrieve an existing entity if it exists in the cache.
void	invalidate(Class<?> type) Removes all references for the given type from the cache.
void	invalidate(Class<?> type, Object key) Remove a reference to an entity from the cache.
<T> void	put(Class<T> type, Object key, T value) Put a reference to an entity.

Method Detail

get

<T> T get(Class<T> type,
          Object key)

Retrieve an existing entity if it exists in the cache.

Type Parameters:

T - entity type

Parameters:

type - entity class

key - entity key

Returns:

the cached entity or null.

put

<T> void put(Class<T> type,
             Object key,
             T value)

Put a reference to an entity.

Type Parameters:

T - entity type

Parameters:

type - entity class

key - entity key

value - entity reference

contains

boolean contains(Class<?> type,
                 Object key)

Check if a reference to an entity exists.

Parameters:

type - entity class

key - entity key

Returns:

true if a reference exists false otherwise.

invalidate

void invalidate(Class<?> type)

Removes all references for the given type from the cache.

Parameters:

type - entity class

invalidate

void invalidate(Class<?> type,
                Object key)

Remove a reference to an entity from the cache.

Parameters:

type - entity class

key - entity key

clear

void clear()

Evict all references from the cache.