com.triactive.jdo.util
Class SoftValueMap
java.lang.Object
com.triactive.jdo.util.ReferenceValueMap
com.triactive.jdo.util.SoftValueMap
- All Implemented Interfaces:
- java.lang.Cloneable, java.util.Map
- public class SoftValueMap
- extends ReferenceValueMap
A java.util.Map
implementation with soft values.
The values are stored as soft references. If map entry value object is not
actively being used, i.e. no other object has a strong reference to it, it may
become garbage collected at the discretion of the garbage collector (typically if
the VM is low on memory). If this happens, the entry in the SoftValueMap
corresponding to the value object will also be removed.
- Author:
- Mike Martin
- See Also:
SoftReference
Nested classes inherited from class java.util.Map |
java.util.Map.Entry |
Methods inherited from class com.triactive.jdo.util.ReferenceValueMap |
clear, clone, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, reap, remove, size, values |
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
SoftValueMap
public SoftValueMap()
SoftValueMap
public SoftValueMap(int initialCapacity)
SoftValueMap
public SoftValueMap(int initialCapacity,
float loadFactor)
SoftValueMap
public SoftValueMap(java.util.Map m)
newValueReference
protected ReferenceValueMap.ValueReference newValueReference(java.lang.Object key,
java.lang.Object value,
java.lang.ref.ReferenceQueue queue)
- Description copied from class:
ReferenceValueMap
- Returns a new
Reference
object to be inserted into the map.
Subclasses must implement this method to construct Reference
objects of the desired type (e.g. SoftReference
, etc.).
- Specified by:
newValueReference
in class ReferenceValueMap
- Parameters:
key
- The key that will be inserted.value
- The associated value to be referenced.queue
- The ReferenceQueue
with which to register the
new Reference
object.
Copyright © 2001 TriActive, Inc. All Rights Reserved.