wt.lifecycle
Class LifeCycleTemplateNameCache

java.lang.Object
  java.rmi.server.RemoteObject
      java.rmi.server.RemoteServer
          wt.util.RMIServer
              wt.cache.CacheManager
                  wt.lifecycle.LifeCycleTemplateNameCache

All Implemented Interfaces:

CacheServer, Remote, Serializable, Unreferenced

public class LifeCycleTemplateNameCache

extends CacheManager

This class implements cache service to store QuerySpec of all Life Cycle template, based on the name of the template. It follows the 2-level cache paradigm. Creation and updates to Life Cycle templates objects must be communicated to the cache by the Life Cycle service.

See Also:

Serialized Form

Nested Class Summary

static class

LifeCycleTemplateNameCache.LifeCycleNameKey

Field Summary

private static int	cacheHits
private static int	cacheSummaryInterval
(package private) Cache	names
(package private) Cache	persistables
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

LifeCycleTemplateNameCache()
Contruct a LifeCycleTemplateName cache.

Method Summary

Object	get(Object key) Key is expected to be an ObjectIdentifier or LifeCycleNameKey The return Object is a Persistable.
int	getDefaultSize() Get desired size of this cache.
protected 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.
protected void	removeEntry(Object key) Protected method which allows subclasses of CacheManager to take some action when a entry is being removed from the local cache.
private void	reportCacheStats()
void	reset() Reset local cache after master reconnect.

Methods inherited from class wt.cache.CacheManager

checkAccess, getDefaultName, getEntry, isCacheHost, overflow, ping, put, putEntry, reference, registerSlave, remove, remove, 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

cacheSummaryInterval

private static int cacheSummaryInterval

cacheHits

private static int cacheHits

names

Cache names

persistables

Cache persistables

Constructor Detail

LifeCycleTemplateNameCache

public LifeCycleTemplateNameCache()
                           throws RemoteException

Contruct a LifeCycleTemplateName cache.

Method Detail

get

public Object get(Object key)

Key is expected to be an ObjectIdentifier or LifeCycleNameKey The return Object is a Persistable.

Overrides:

get in class CacheManager

Parameters:

key - the key object

Returns:

the corresponding cached object or null if not in cache

putEntry

protected 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

removeEntry

protected void removeEntry(Object key)

Description copied from class: CacheManager

Protected method which allows subclasses of CacheManager to take some action when a entry is being removed from the local cache. This method is invoked to remove the entry in the local cache as a result of a local remove call or a call forwarded from a master cache. If this cache has a master cache, the remove 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 remove call.

This method is not called when entries are being removed by the overflow or reset methods.

Supported API: true

Overrides:

removeEntry in class CacheManager

Parameters:

key - the key object (null = clear entire cache)

reportCacheStats

private void reportCacheStats()

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