LRUMap (OpenJPA 0.9.7-incubating API)
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org.apache.openjpa.lib.util
Class LRUMap
java.lang.Object
java.util.AbstractMap
org.apache.commons.collections.map.AbstractHashedMap
org.apache.commons.collections.map.AbstractLinkedMap
org.apache.commons.collections.map.LRUMap
org.apache.openjpa.lib.util.LRUMap
All Implemented Interfaces: Serializable, Cloneable, Map, BoundedMap, IterableMap, OrderedMap, SizedMap
public class LRUMapextends LRUMapimplements SizedMap
Extension of the commons LRUMap that can change its
maximum size.
Author:
Abe White
See Also:Serialized Form
Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.commons.collections.map.AbstractLinkedMap
AbstractLinkedMap.EntrySetIterator, AbstractLinkedMap.KeySetIterator, AbstractLinkedMap.LinkEntry, AbstractLinkedMap.LinkIterator, AbstractLinkedMap.LinkMapIterator, AbstractLinkedMap.ValuesIterator
 
Nested classes/interfaces inherited from class org.apache.commons.collections.map.AbstractHashedMap
AbstractHashedMap.EntrySet, AbstractHashedMap.HashEntry, AbstractHashedMap.HashIterator, AbstractHashedMap.HashMapIterator, AbstractHashedMap.KeySet, AbstractHashedMap.Values
 
Nested classes/interfaces inherited from interface java.util.Map
Map.Entry<K,V>
 
Field Summary
 
Fields inherited from class org.apache.commons.collections.map.LRUMap
DEFAULT_MAX_SIZE
 
Fields inherited from class org.apache.commons.collections.map.AbstractLinkedMap
header
 
Fields inherited from class org.apache.commons.collections.map.AbstractHashedMap
data, DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR, DEFAULT_THRESHOLD, entrySet, GETKEY_INVALID, GETVALUE_INVALID, keySet, loadFactor, MAXIMUM_CAPACITY, modCount, NO_NEXT_ENTRY, NO_PREVIOUS_ENTRY, NULL, REMOVE_INVALID, SETVALUE_INVALID, size, threshold, values
 
Constructor Summary
LRUMap()
           
LRUMap(int maxSize)
           
LRUMap(int maxSize,
float loadFactor)
           
LRUMap(Map map)
           
 
Method Summary
protected  void
doReadObject(ObjectInputStream in)
           
protected  void
doWriteObject(ObjectOutputStream out)
           
 int
getMaxSize()
          The maximum number of entries, or Integer.MAX_VALUE for no limit.
 boolean
isFull()
          Whether the map is full.
 int
maxSize()
           
 void
overflowRemoved(Object key,
Object value)
          Overridable callback for when an overflow entry is automatically removed.
protected  boolean
removeLRU(AbstractLinkedMap.LinkEntry entry)
           
 void
setMaxSize(int max)
          The maximum number of entries, or Integer.MAX_VALUE for no limit.
 
Methods inherited from class org.apache.commons.collections.map.LRUMap
addMapping, clone, get, isScanUntilRemovable, moveToMRU, reuseMapping, updateEntry
 
Methods inherited from class org.apache.commons.collections.map.AbstractLinkedMap
addEntry, clear, containsValue, createEntry, createEntrySetIterator, createKeySetIterator, createValuesIterator, entryAfter, entryBefore, firstKey, getEntry, init, lastKey, mapIterator, nextKey, orderedMapIterator, previousKey, removeEntry
 
Methods inherited from class org.apache.commons.collections.map.AbstractHashedMap
calculateNewCapacity, calculateThreshold, checkCapacity, containsKey, convertKey, destroyEntry, ensureCapacity, entryHashCode, entryKey, entryNext, entrySet, entryValue, equals, getEntry, hash, hashCode, hashIndex, isEmpty, isEqualKey, isEqualValue, keySet, put, putAll, remove, removeMapping, reuseEntry, size, toString, values
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface java.util.Map
clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values
 
Constructor Detail
LRUMap
public LRUMap()
LRUMap
public LRUMap(int maxSize)
LRUMap
public LRUMap(int maxSize,
float loadFactor)
LRUMap
public LRUMap(Map map)
Method Detail
getMaxSize
public int getMaxSize()
Description copied from interface: SizedMap
The maximum number of entries, or Integer.MAX_VALUE for no limit.
Specified by:getMaxSize in interface SizedMap
setMaxSize
public void setMaxSize(int max)
Description copied from interface: SizedMap
The maximum number of entries, or Integer.MAX_VALUE for no limit.
Specified by:setMaxSize in interface SizedMap
overflowRemoved
public void overflowRemoved(Object key,
Object value)
Description copied from interface: SizedMap
Overridable callback for when an overflow entry is automatically removed.
Specified by:overflowRemoved in interface SizedMap
maxSize
public int maxSize()
Specified by:maxSize in interface BoundedMapOverrides:maxSize in class LRUMap
isFull
public boolean isFull()
Description copied from interface: SizedMap
Whether the map is full.
Specified by:isFull in interface BoundedMapSpecified by:isFull in interface SizedMapOverrides:isFull in class LRUMap
removeLRU
protected boolean removeLRU(AbstractLinkedMap.LinkEntry entry)
Overrides:removeLRU in class LRUMap
doWriteObject
protected void doWriteObject(ObjectOutputStream out)
throws IOException
Overrides:doWriteObject in class LRUMap
Throws:
IOException
doReadObject
protected void doReadObject(ObjectInputStream in)
throws IOException,
ClassNotFoundException
Overrides:doReadObject in class LRUMap
Throws:
IOException
ClassNotFoundException
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