Java Doc for PassivationMap.java in  » Database-JDBC-Connection-Pool » Space4J » org » space4j » passivation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database JDBC Connection Pool » Space4J » org.space4j.passivation   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.space4j.passivation.PassivationMap PassivationMap public class PassivationMap implements Map,Runnable,Serializable(Code) The PassivationMap stores its values in PassivationObjs. It creates a PassivationObj for all objects it receives through the put method. PassivationMap returns PassivationObjs through its get method. It is able to passivate objects to save memory based on its last access time. This will be useful when you have too many objects and there is not enough RAM. Let's say you have 3 million registered users for your application. It's not a good idea to keep all 3 million users in memory. Among these 3 million users, how many are ACTIVE users ??? The goal of the PassivationMap is to keep only active objects in memory. Note: Passivation does not generate commands and it is only reflected by snapshots. Field Summary final static  String DIR      final static  String PV_PREFIX      Constructor Summary public   PassivationMap(Space4J space4j)      public   PassivationMap(Space4J space4j, int sleeptime, int mininterval)      Creates a PassivationMap with sleeptime and mininterval. public   PassivationMap(Space4J space4j, Map map)      Creates a PassivationMap. Method Summary public synchronized  void clear()      public synchronized  boolean containsKey(Object key)      public  boolean containsValue(Object value)      public  Set entrySet()      public  boolean equals(Object obj)      public synchronized  Object get(Object key)      This will only return PassivationObjs. public synchronized  Iterator getSafeKeyIterator()      Return a thread-safe Iterator with the keys of this Map. public  int hashCode()      public synchronized  boolean isEmpty()      public synchronized  Set keySet()      public synchronized  Object put(Object key, Object value)      Every object put here will become a PassivationObj. public  void putAll(Map m)      Every object put here will become a PassivationObj. public synchronized  Object remove(Object key)      public  void run()      public synchronized  int size()      public  Collection values()      Field Detail DIR final static String DIR(Code) PV_PREFIX final static String PV_PREFIX(Code) Constructor Detail PassivationMap public PassivationMap(Space4J space4j)(Code) Creates a PassivationMap Parameters:   space4j - The space4j containing this map. PassivationMap public PassivationMap(Space4J space4j, int sleeptime, int mininterval)(Code) Creates a PassivationMap with sleeptime and mininterval. Parameters:   space4j - The space4j containing this map. Parameters:   sleeptime - The monitor will wake up every sleeptime. Parameters:   mininterval - The min interval before an object can be passivated. PassivationMap public PassivationMap(Space4J space4j, Map map)(Code) Creates a PassivationMap. Parameters:   space4j - The space4j containing this map. Parameters:   map - The internal map to use. Method Detail clear public synchronized void clear()(Code) containsKey public synchronized boolean containsKey(Object key)(Code) containsValue public boolean containsValue(Object value)(Code) entrySet public Set entrySet()(Code) equals public boolean equals(Object obj)(Code) get public synchronized Object get(Object key)(Code) This will only return PassivationObjs. getSafeKeyIterator public synchronized Iterator getSafeKeyIterator()(Code) Return a thread-safe Iterator with the keys of this Map. Thread-safe iterator with keys. hashCode public int hashCode()(Code) isEmpty public synchronized boolean isEmpty()(Code) keySet public synchronized Set keySet()(Code) put public synchronized Object put(Object key, Object value)(Code) Every object put here will become a PassivationObj. putAll public void putAll(Map m)(Code) Every object put here will become a PassivationObj. remove public synchronized Object remove(Object key)(Code) run public void run()(Code) size public synchronized int size()(Code) values public Collection values()(Code) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)