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JBoss API: Class NoPassivationCachePolicy
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org.jboss.ejb.plugins
Class NoPassivationCachePolicy

java.lang.Object
  |
  +--org.jboss.ejb.plugins.NoPassivationCachePolicy
All Implemented Interfaces:
CachePolicy, EnterpriseContextCachePolicy, Service
public class NoPassivationCachePolicy
extends java.lang.Object
implements EnterpriseContextCachePolicy

Implementation of a no passivation cache policy.

Version:
$Revision: 1.4 $
Author:
Simone Bordet (simone.bordet@compaq.com)
See Also:
AbstractInstanceCache

Inner classes inherited from class org.jboss.ejb.plugins.EnterpriseContextCachePolicy
EnterpriseContextCachePolicy.Scheduler
 
Fields inherited from interface org.jboss.ejb.plugins.EnterpriseContextCachePolicy
scheduler
 
Constructor Summary
NoPassivationCachePolicy(AbstractInstanceCache eic)
          Creates a no passivation cache policy object given the instance cache that use this policy object, that btw is not used.
 
Method Summary
 void destroy()
           
 void flush()
          Flushes the cached objects from the cache.
 java.lang.Object get(java.lang.Object key)
          Returns the object paired with the specified key if it's present in the cache, otherwise must return null.
 void init()
           
 void insert(java.lang.Object key, java.lang.Object ctx)
          Inserts the specified object into the cache following the implemented policy.
 java.lang.Object peek(java.lang.Object key)
          Returns the object paired with the specified key if it's present in the cache, otherwise must return null.
 void remove(java.lang.Object key)
          Remove the cached object paired with the specified key.
 void start()
           
 void stop()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NoPassivationCachePolicy

public NoPassivationCachePolicy(AbstractInstanceCache eic)
Creates a no passivation cache policy object given the instance cache that use this policy object, that btw is not used.
Method Detail

init

public void init()
          throws java.lang.Exception
Specified by:
init in interface Service

start

public void start()
           throws java.lang.Exception
Specified by:
start in interface Service

stop

public void stop()
Specified by:
stop in interface Service

destroy

public void destroy()
Specified by:
destroy in interface Service

get

public java.lang.Object get(java.lang.Object key)
Description copied from interface: CachePolicy
Returns the object paired with the specified key if it's present in the cache, otherwise must return null.
Implementations of this method must have complexity of order O(1). Differently from CachePolicy.peek(java.lang.Object) this method not only return whether the object is present in the cache or not, but also applies the implemented policy that will "refresh" the cached object in the cache, because this cached object was really requested.
Specified by:
get in interface CachePolicy
Following copied from interface: org.jboss.util.CachePolicy
Parameters:
key - the key paired with the object
See Also:
CachePolicy.peek(java.lang.Object)

peek

public java.lang.Object peek(java.lang.Object key)
Description copied from interface: CachePolicy
Returns the object paired with the specified key if it's present in the cache, otherwise must return null.
Implementations of this method must have complexity of order O(1). This method should not apply the implemented caching policy to the object paired with the given key, so that a client can query if an object is cached without "refresh" its cache status. Real requests for the object must be done using CachePolicy.get(java.lang.Object).
Specified by:
peek in interface CachePolicy
Following copied from interface: org.jboss.util.CachePolicy
Parameters:
key - the key paired with the object
See Also:
CachePolicy.get(java.lang.Object)

insert

public void insert(java.lang.Object key,
                   java.lang.Object ctx)
Description copied from interface: CachePolicy
Inserts the specified object into the cache following the implemented policy.
Implementations of this method must have complexity of order O(1).
Specified by:
insert in interface CachePolicy
Following copied from interface: org.jboss.util.CachePolicy
Parameters:
key - the key paired with the object
object - the object to cache
See Also:
CachePolicy.remove(java.lang.Object)

remove

public void remove(java.lang.Object key)
Description copied from interface: CachePolicy
Remove the cached object paired with the specified key.
Implementations of this method must have complexity of order O(1).
Specified by:
remove in interface CachePolicy
Following copied from interface: org.jboss.util.CachePolicy
Parameters:
key - the key paired with the object
See Also:
CachePolicy.insert(java.lang.Object, java.lang.Object)

flush

public void flush()
Description copied from interface: CachePolicy
Flushes the cached objects from the cache.
Specified by:
flush in interface CachePolicy
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