com.gigaspaces.internal.classloader

Class ClassLoaderCache

java.lang.Object

com.gigaspaces.internal.classloader.ClassLoaderCache

All Implemented Interfaces:

SelfCleaningTable.ICleanerListener<Long>

public class ClassLoaderCache
extends Object
implements SelfCleaningTable.ICleanerListener<Long>

A class loaders cache, each class loader is associated with a long key value All the class loader are kept as weak references and can be explicitly removed

Since:

7.0.1

Author:

eitany

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ClassLoaderCache(long removedRelevantWindow)

Method Summary

Modifier and Type	Method and Description
static ClassLoaderCache	getCache() Gets the singleton cache instance
ClassLoader	getClassLoader(Long key) Gets class loader by key
Long	getClassLoaderKey(ClassLoader classLoader) Gets the key for the specified class loader
Long	putClassLoader(ClassLoader classLoader) Add new class loader to the cache, if the class loader is already present, the existing key will be returned
void	registerCacheStateListener(IClassLoaderCacheStateListener listener) Register for cache state changed events, the listener is kept as weak reference, all subscribers must keep a strong reference to the listener to keep this notification active, this will trigger history events of at most last 100 removed class loader
boolean	registerClassLoaderStateListener(Long classLoaderKey, IClassLoaderCacheStateListener listener) Register for a specified class loader key state events, the listener is kept as weak reference, all subscribers must keep a strong reference to the listener to keep this notification active
void	removeClassLoader(ClassLoader classLoader) Remove the specified class loader
void	removeClassLoaderStateListener(Long classLoaderKey, IClassLoaderCacheStateListener listener) Remove a specific listener from a specific class listener
void	shutdown()
void	weakEntryRemoved(Long value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClassLoaderCache

protected ClassLoaderCache(long removedRelevantWindow)

Method Detail

getCache

public static ClassLoaderCache getCache()

Gets the singleton cache instance

shutdown

public void shutdown()

putClassLoader

public Long putClassLoader(ClassLoader classLoader)

Add new class loader to the cache, if the class loader is already present, the existing key will be returned

Returns:

identifier key for the specified class loader

getClassLoader

public ClassLoader getClassLoader(Long key)

Gets class loader by key

Returns:

null if none associated to the given key

removeClassLoader

public void removeClassLoader(ClassLoader classLoader)

Remove the specified class loader

weakEntryRemoved

public void weakEntryRemoved(Long value)

Specified by:

weakEntryRemoved in interface SelfCleaningTable.ICleanerListener<Long>

getClassLoaderKey

public Long getClassLoaderKey(ClassLoader classLoader)

Gets the key for the specified class loader

registerCacheStateListener

public void registerCacheStateListener(IClassLoaderCacheStateListener listener)

Register for cache state changed events, the listener is kept as weak reference, all subscribers must keep a strong reference to the listener to keep this notification active, this will trigger history events of at most last 100 removed class loader

registerClassLoaderStateListener

public boolean registerClassLoaderStateListener(Long classLoaderKey,
                                                IClassLoaderCacheStateListener listener)

Register for a specified class loader key state events, the listener is kept as weak reference, all subscribers must keep a strong reference to the listener to keep this notification active

Returns:

true if registration successful, which means the specified class loader key exists in the cache

removeClassLoaderStateListener

public void removeClassLoaderStateListener(Long classLoaderKey,
                                           IClassLoaderCacheStateListener listener)

Remove a specific listener from a specific class listener