wt.org
Class WTDirKeyCache

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          wt.util.RMIServer
              wt.cache.CacheManager
                  wt.org.WTDirKeyCache

All Implemented Interfaces:

CacheServer, Remote, Serializable, Unreferenced

public class WTDirKeyCache

extends CacheManager

See Also:

Serialized Form

Field Summary

protected static boolean	STACKTRACE
protected static boolean	VERBOSE

Fields inherited from class wt.cache.CacheManager

MASTER

Fields inherited from class wt.util.RMIServer

csf, ssf

Fields inherited from class java.rmi.server.RemoteServer

Fields inherited from class java.rmi.server.RemoteObject

ref

Fields inherited from interface wt.cache.CacheServer

versionID

Constructor Summary

WTDirKeyCache()

Method Summary

int	getDefaultSize() Get desired size of this cache.
Object	getEntry(Object key) Remote method for getting a cache entry.
void	putEntry(Object key, Object value) Protected method which allows subclasses of CacheManager to take some action when a new entry is being put into the local cache.
void	reset() Reset local cache after master reconnect.

Methods inherited from class wt.cache.CacheManager

checkAccess, get, getDefaultName, isCacheHost, overflow, ping, put, putEntry, reference, registerSlave, remove, remove, removeEntry, removeEntry, unreferenced, update, updateEntry, updateEntry

Methods inherited from class wt.util.RMIServer

clone, exportObject, exportObject, exportObject, getClientSocketFactory, getPort, getServerSocketFactory, getStub, isHostInList, isLocalHost, setPort, writeReplace

Methods inherited from class java.rmi.server.RemoteServer

getClientHost, getLog, setLog

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

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

Field Detail

VERBOSE

protected static boolean VERBOSE

STACKTRACE

protected static boolean STACKTRACE

Constructor Detail

WTDirKeyCache

public WTDirKeyCache()
              throws RemoteException

Method Detail

getEntry

public Object getEntry(Object key)

Description copied from class: CacheManager

Remote method for getting a cache entry.

Supported API: false

Specified by:

getEntry in interface CacheServer

Overrides:

getEntry in class CacheManager

putEntry

public void putEntry(Object key,
                     Object value)

Description copied from class: CacheManager

Protected method which allows subclasses of CacheManager to take some action when a new entry is being put into the local cache. This method is invoked to put the entry in the local cache as a result of a local put call or a call forwarded from a slave cache or when a local get call downloads the entry from a master cache. If this cache has a master cache, the put call will already be forwarded to the master before this method is invoked. Slave caches will be notified to remove their entries after this method returns. This method must not cause a recursive put call.

Supported API: true

Overrides:

putEntry in class CacheManager

Parameters:

key - the key object

value - the value object

reset

public void reset()
           throws RemoteException

Description copied from class: CacheManager

Reset local cache after master reconnect. Called after recovery from communication failure when a connection to a new master has been established. The current cache contents are cleared and the local cache is registered as a slave of the new master.

NOTE: This may be called as a result of calling other cache updating operations since that is when the disconnect and reconnect may take place. When this happens, this method is called before the other methods return.

Supported API: true

Overrides:

reset in class CacheManager

Throws:

RemoteException

getDefaultSize

public int getDefaultSize()

Description copied from class: CacheManager

Get desired size of this cache. This method attemps to find a size property called wt.cache.size.CacheName where cacheName is the name of this cache. Subclasses can override this method to control cache size in some other way. If no property is found, the default size is 100.

Supported API: true

Overrides:

getDefaultSize in class CacheManager