wt.cache
Class DirtyCache

java.lang.Object
  java.util.AbstractMap
      wt.util.Cache
          wt.cache.DirtyCache

All Implemented Interfaces:

Map

Deprecated. Replaced by wt.cache.DirtyMap

Supported API: false

Extendable: false

public class DirtyCache

extends Cache

putLater and removeLater maintain thread-local caches of modifications until the current transaction is completed.

addListener and removeListener allow DirtyCacheListeners to receive notifications of puts and removes.

Nested Class Summary

static interface	DirtyCache.DirtyCacheListener Deprecated. Notified by putLater, putAllLater, remoteLater, and removeAllLater when changes to mappings are commited to the shared cache.
static class	DirtyCache.DirtyCacheListenerAdapter Deprecated. Convenience base class for listener implementations.
(package private) static class	DirtyCache.DirtyMapListenerAdapter Deprecated.

Nested classes inherited from class wt.util.Cache

Cache.CacheEntry

Nested classes inherited from class java.util.AbstractMap

Nested classes inherited from class java.util.Map

Map.Entry

Field Summary

private DirtyMap

dirtyMap Deprecated.

Fields inherited from class wt.util.Cache

agedOut, cacheSize, count, hashCodes, hits, keys, misses, modCount, tableSize, values

Constructor Summary

DirtyCache(int size)
Deprecated. Constructs a cache with a private context key

DirtyCache(int size, Object context_key)
Deprecated.

Method Summary

void	addListener(DirtyCache.DirtyCacheListener listener) Deprecated.
Object	getDirty(Object key) Deprecated. Check thread-local cache.
void	putAllLater(Map mappings, Object placeholder) Deprecated. Puts all the mappings in the given map into the cache, following the same semantics as putLater(Object,Object,Object).
void	putLater(Object key, Object value, Object placeholder) Deprecated. Keeps change in thread-local cache until the current transaction commits.
void	removeAll(Collection keys) Deprecated. Convenience method that removes all the mappings for the keys in the given collection
void	removeAllLater(Collection keys) Deprecated. Removes all the keys in the given set, following the semantics of removeLater(Object)
void	removeLater(Object key) Deprecated. Overridden to keep change in thread-local cache until the current transaction commits
void	removeListener(DirtyCache.DirtyCacheListener listener) Deprecated.

Methods inherited from class wt.util.Cache

clear, containsKey, containsValue, createEntry, entries, entrySet, find, get, getAndRemove, getAndReplace, getKeys, keySet, link, overflow, print, put, remove, size, toString, touch

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode, isEmpty, putAll, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

dirtyMap

private DirtyMap dirtyMap

Deprecated.

Constructor Detail

DirtyCache

public DirtyCache(int size)

Deprecated.

Constructs a cache with a private context key

DirtyCache

public DirtyCache(int size,
                  Object context_key)

Deprecated.

Method Detail

getDirty

public Object getDirty(Object key)

Deprecated.

Check thread-local cache. If that does not contain the key, then check global cache.

Returns:

The object that maps to the given key

putLater

public void putLater(Object key,
                     Object value,
                     Object placeholder)
              throws WTException

Deprecated.

Keeps change in thread-local cache until the current transaction commits. If placeholder is non-null, then only modifies the cache if the key still maps to the local placeholder. This allows for the detection of concurrent modification of the key by another thread.

Warning: This method must be called from within an active transaction

Throws:

WTException

putAllLater

public void putAllLater(Map mappings,
                        Object placeholder)
                 throws WTException

Deprecated.

Puts all the mappings in the given map into the cache, following the same semantics as putLater(Object,Object,Object). The implementation assumes that each key in the given map is cuurrently assigned to the placeholder parameter.

Parameters:

mappings - The mappings that should be added to the cache

placeholder - The placeholder to use

Throws:

WTException

removeAll

public void removeAll(Collection keys)

Deprecated.

Convenience method that removes all the mappings for the keys in the given collection

Parameters:

keys - The keys to remove mappings for

removeLater

public void removeLater(Object key)
                 throws WTException

Deprecated.

Overridden to keep change in thread-local cache until the current transaction commits

Warning: This method must be called from within an active transaction

Throws:

WTException

removeAllLater

public void removeAllLater(Collection keys)
                    throws WTException

Deprecated.

Removes all the keys in the given set, following the semantics of removeLater(Object)

Throws:

WTException

addListener

public void addListener(DirtyCache.DirtyCacheListener listener)

Deprecated.

removeListener

public void removeListener(DirtyCache.DirtyCacheListener listener)

Deprecated.