NullSafeConcurrentHashMap (OpenJPA Parent POM 2.4.0 API)

java.lang.Object
- java.util.AbstractMap<K,V>
- - java.util.concurrent.ConcurrentHashMap
  - - org.apache.openjpa.lib.util.concurrent.NullSafeConcurrentHashMap

All Implemented Interfaces:

Serializable, ConcurrentMap, Map

Direct Known Subclasses:

SizedConcurrentHashMap

Deprecated.
In Java 8, java.util.ConcurrentHashMap received an overhauled and this extension was not updated. This class will fail to compile on Java 8. If it is compiled at a lower level and run on Java 8 it will not work properly. For more information: https://issues.apache.org/jira/browse/OPENJPA-2441
```
@Deprecated
public class NullSafeConcurrentHashMap
extends ConcurrentHashMap
```
A subclass of ConcurrentHashMap that allows null keys and values. In exchange, it weakens the contract of putIfAbsent(java.lang.Object, java.lang.Object) and the other concurrent methods added in #ConcurrentHashMap.

Since:

1.1.0

See Also:
Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static interface NullSafeConcurrentHashMap.KeyFilter
Deprecated.
- Nested classes/interfaces inherited from class java.util.AbstractMap
  AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K,V>

Nested Classes
Modifier and Type	Class and Description
`static interface`	`NullSafeConcurrentHashMap.KeyFilter` Deprecated.

Constructor Summary

Constructors
Constructor and Description
`NullSafeConcurrentHashMap()` Deprecated.
`NullSafeConcurrentHashMap(int size, float load, int concurrencyLevel)` Deprecated.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`contains(Object value)` Deprecated.
`boolean`	`containsKey(Object key)` Deprecated.
`boolean`	`containsValue(Object value)` Deprecated.
`Enumeration`	`elements()` Deprecated.
`Set`	`entrySet()` Deprecated.
`Object`	`get(Object key)` Deprecated.
`Enumeration`	`keys()` Deprecated.
`Object`	`put(Object key, Object value)` Deprecated.
`Object`	`putIfAbsent(Object key, Object value)` Deprecated.
`Iterator<Map.Entry>`	`randomEntryIterator()` Deprecated. The returned data structure should not be shared among multiple threads.
`Object`	`remove(Object key)` Deprecated.
`boolean`	`remove(Object key, Object value)` Deprecated.
`Map.Entry`	`removeRandom()` Deprecated.
`Object`	`replace(Object key, Object value)` Deprecated.
`boolean`	`replace(Object key, Object oldValue, Object newValue)` Deprecated.
`Collection`	`values()` Deprecated.

Methods inherited from class java.util.concurrent.ConcurrentHashMap
clear, isEmpty, keySet, putAll, size

Methods inherited from class java.util.AbstractMap
clone, equals, hashCode, toString

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
equals, hashCode

- Constructor Detail
  - NullSafeConcurrentHashMap
```
public NullSafeConcurrentHashMap(int size,
                         float load,
                         int concurrencyLevel)
```
    Deprecated.
  - NullSafeConcurrentHashMap
```
public NullSafeConcurrentHashMap()
```
    Deprecated.
- Method Detail
  - removeRandom
```
public Map.Entry removeRandom()
```
    Deprecated.
  - randomEntryIterator
```
public Iterator<Map.Entry> randomEntryIterator()
```
    Deprecated.
    
    The returned data structure should not be shared among multiple threads.
  - remove
```
public Object remove(Object key)
```
    Deprecated.
    
    Specified by:
    
    remove in interface Map
    
    Overrides:
    
    remove in class ConcurrentHashMap
  - remove
```
public boolean remove(Object key,
             Object value)
```
    Deprecated.
    
    Specified by:
    
    remove in interface ConcurrentMap
    
    Overrides:
    
    remove in class ConcurrentHashMap
  - replace
```
public boolean replace(Object key,
              Object oldValue,
              Object newValue)
```
    Deprecated.
    
    Specified by:
    
    replace in interface ConcurrentMap
    
    Overrides:
    
    replace in class ConcurrentHashMap
  - replace
```
public Object replace(Object key,
             Object value)
```
    Deprecated.
    
    Specified by:
    
    replace in interface ConcurrentMap
    
    Overrides:
    
    replace in class ConcurrentHashMap
  - putIfAbsent
```
public Object putIfAbsent(Object key,
                 Object value)
```
    Deprecated.
    
    Specified by:
    
    putIfAbsent in interface ConcurrentMap
    
    Overrides:
    
    putIfAbsent in class ConcurrentHashMap
  - put
```
public Object put(Object key,
         Object value)
```
    Deprecated.
    
    Specified by:
    
    put in interface Map
    
    Overrides:
    
    put in class ConcurrentHashMap
  - get
```
public Object get(Object key)
```
    Deprecated.
    
    Specified by:
    
    get in interface Map
    
    Overrides:
    
    get in class ConcurrentHashMap
  - containsKey
```
public boolean containsKey(Object key)
```
    Deprecated.
    
    Specified by:
    
    containsKey in interface Map
    
    Overrides:
    
    containsKey in class ConcurrentHashMap
  - containsValue
```
public boolean containsValue(Object value)
```
    Deprecated.
    
    Specified by:
    
    containsValue in interface Map
    
    Overrides:
    
    containsValue in class ConcurrentHashMap
  - contains
```
public boolean contains(Object value)
```
    Deprecated.
    
    Overrides:
    
    contains in class ConcurrentHashMap
  - elements
```
public Enumeration elements()
```
    Deprecated.
    
    Overrides:
    
    elements in class ConcurrentHashMap
  - entrySet
```
public Set entrySet()
```
    Deprecated.
    
    Specified by:
    
    entrySet in interface Map
    
    Overrides:
    
    entrySet in class ConcurrentHashMap
  - keys
```
public Enumeration keys()
```
    Deprecated.
    
    Overrides:
    
    keys in class ConcurrentHashMap
  - values
```
public Collection values()
```
    Deprecated.
    
    Specified by:
    
    values in interface Map
    
    Overrides:
    
    values in class ConcurrentHashMap

Class NullSafeConcurrentHashMap

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

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

Constructor Summary

Method Summary

Methods inherited from class java.util.concurrent.ConcurrentHashMap

Methods inherited from class java.util.AbstractMap

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Constructor Detail

NullSafeConcurrentHashMap

NullSafeConcurrentHashMap

Method Detail

removeRandom

randomEntryIterator

remove

remove

replace

replace

putIfAbsent

put

get

containsKey

containsValue

contains

elements

entrySet

keys

values