Level1Cache (DataNucleus Core 5.2.8 API)

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 extends Object,V extends Object>

Field Summary

Fields
Modifier and Type Field Description

static String NONE_NAME

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	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

- Field Detail
  - NONE_NAME
```
static final String NONE_NAME
```
    See Also:
    
    Constant Field 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