org.datanucleus.cache

Interface Level1Cache

All Superinterfaces:

Map<Object,ObjectProvider>

All Known Implementing Classes:

SoftRefCache, StrongRefCache, WeakRefCache

public interface Level1Cache
extends Map<Object,ObjectProvider>

Provides an interface for Level 1 caches. Currently we just require a Map, but interfacing this provides the flexibility to being able to add requirements in the future.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
ObjectProvider	getUnique(CacheUniqueKey key) Method to retrieve the ObjectProvider for the specified unique key.
Object	putUnique(CacheUniqueKey key, ObjectProvider op) Method to store an ObjectProvider for this unique key.

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Method Detail

getUnique

ObjectProvider getUnique(CacheUniqueKey key)

Method to retrieve the ObjectProvider for the specified unique key.

Parameters:

key - Unique key

Returns:

The ObjectProvider if one is cached for this unique key

putUnique

Object putUnique(CacheUniqueKey key,
                 ObjectProvider op)

Method to store an ObjectProvider for this unique key.

Parameters:

key - The unique key

op - The ObjectProvider

Returns:

The previous ObjectProvider for this unique key if one was present, otherwise null