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Java Source Code / Java Documentation » Search Engine » Jofti » com.jofti.cache   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.jofti.cache.BaseAdaptor All known Subclasses:   com.jofti.cache.adapter.ObjectGridListenerAdapter,  com.jofti.cache.adapter.OSCacheAdapter,  com.jofti.cache.adapter.EhCacheListenerAdapter,  com.jofti.cache.adapter.OSCacheListenerAdapter,  com.jofti.cache.adapter.CoherenceListenerAdapter,  com.jofti.cache.adapter.MapAdapter,  com.jofti.cache.adapter.JBossCacheAdapter,  com.jofti.cache.adapter.EhCachePre1_2Adapter,  com.jofti.cache.adapter.MockAdapter,  com.jofti.cache.adapter.EhCacheAdapter, BaseAdaptor abstract public class BaseAdaptor implements IBaseAdaptor(Code) The base class for the adapters. The locking is used to allow a reasonable amount of concurrency in the cache. There are 31 locks that are obtained as a mod 31 of the Object's hashcode. The premise is that a lock can be obtained on methods that modify or access the cache. The objective is to prevent concurrent modification for identical keys . However, it is also desirable to allow concurrent usage of the cache and the index as both should be multi-threaded. Although that is reliant on the implementation. author:    Steve Woodcock Field Summary protected  String MUTABLE_VALUES      protected  Object[] cacheLocks      protected  boolean checkMutable      protected  InternalIndex index       int queries       int updates      Method Summary public  void acquireQueryLock()      public  void acquireUpdateLock()      protected  Object checkMutable(Object key, Object result)      Checks the multability of a Cache value retrieved from the Cache instance in the adapter. public  Object decorateKey(Object key)      public  Object getCacheLock(Object key)      abstract protected  Object getCacheValue(Object key)      Returns the value from the Cache for the key. public  Map getCacheValues(Map col, IParsedQuery query, ClassIntrospector introspector)      abstract public  InternalIndex getIndex()      public  Map limitResults(Map temp, int startResult, int maxResults)      public  IndexQuery processQuery(IndexQuery query, ParserManager manager)      public  Map query(IndexQuery query)      public  void releaseQueryLock()      public  void releaseUpdateLock()      public  Object stripKey(Object key)      public  void warnOutOfDate(Object key)      Field Detail MUTABLE_VALUES protected String MUTABLE_VALUES(Code) cacheLocks protected Object[] cacheLocks(Code) checkMutable protected boolean checkMutable(Code) index protected InternalIndex index(Code) queries int queries(Code) updates int updates(Code) Method Detail acquireQueryLock public void acquireQueryLock() throws JoftiException(Code) acquireUpdateLock public void acquireUpdateLock() throws JoftiException(Code) checkMutable protected Object checkMutable(Object key, Object result)(Code) Checks the multability of a Cache value retrieved from the Cache instance in the adapter. Each adapter is responsible for providing the implementation. Parameters:   key - Parameters:   result - The value from the Cache or Null if the value has changed after it was indexed decorateKey public Object decorateKey(Object key)(Code) getCacheLock public Object getCacheLock(Object key)(Code) getCacheValue abstract protected Object getCacheValue(Object key)(Code) Returns the value from the Cache for the key. Each adpter is responsible for the specific implementation of this, as the Cache retrieval mechanism will probably be different for each Cache. Parameters:   key - getCacheValues public Map getCacheValues(Map col, IParsedQuery query, ClassIntrospector introspector) throws JoftiException(Code) getIndex abstract public InternalIndex getIndex()(Code) limitResults public Map limitResults(Map temp, int startResult, int maxResults)(Code) processQuery public IndexQuery processQuery(IndexQuery query, ParserManager manager) throws JoftiException(Code) query public Map query(IndexQuery query) throws JoftiException(Code) releaseQueryLock public void releaseQueryLock()(Code) releaseUpdateLock public void releaseUpdateLock()(Code) stripKey public Object stripKey(Object key)(Code) warnOutOfDate public void warnOutOfDate(Object key)(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)