CustomizationsAwareCache

Class Overview

This is an abstract base class for those Caches whose content can be affected by a customization. Typically, it is used by file-caches like the configuration files or resource bundles caches.

The constructor register this Cache as an observer of the Customizations class. When customization changes (for example, when customizations are added/removed at runtime), the Customization class will inform to all its observers about the change through the update(Observable, Object) method. If the observed object has changed, the cache will simply be cleared.

Summary

[Expand] Inherited Constants

From class com.microstrategy.utils.cache.CacheBase int DEFAULT_FILE_REFRESH_TIME Refresh time constant indicating that default file refreshing time from the CacheRegistry shall be used for this cache. int DEFAULT_REFRESH_TIME Refresh time constant indicating that default refresh time from the CacheRegistry shall be used for this cache. int DEFAULT_STATISTIC_TIME Statistic time constant indicating that default statistic time from the CacheRegistry shall be used for this cache. int DEFAULT_SYS_TIMEOUT int DEFAULT_USER_TIMEOUT Timeout constant indicating that default timeout value from the CacheRegistry shall be used for this cache. int NO_REFRESH Refresh time constant indicating that cache members are never automatically reloaded. int NO_STATISTIC Statistic time constant indicating that cache shall not automatically log statistic. int NO_TIMEOUT Timeout constant indicating that cache members shall never timeout.

[Expand] Inherited Fields
From class com.microstrategy.utils.cache.CacheBase public static final Object NO_KEY This constant is returned from getKey(CacheHint) if the hint object does not contain enough information to build the key but it is still possible to load the object from the persistent storage. public String alias Cache alias.

[Expand] Inherited Methods
From class com.microstrategy.utils.cache.CacheBase boolean canUpdate(CacheHint hint) Overridable. synchronized void clear() Clears the cache - all entries are removed. void close() Un-register cache from the cache registry. synchronized void configure(Properties prop) boolean contains(CacheHint hint) void delete(CacheHint hint) Removes object from the cache and persistent storage Object get(CacheHint hint) Finds and returns cached object based on the hint. abstract Object getKey(CacheHint hint) Overridable. String getName() Returns cache name. synchronized int getRefreshTime() Returns cache refresh time in seconds. synchronized int getStatisticTime() Returns the statistic frequency in seconds. synchronized int getTimeout() Returns cache timeout in seconds. abstract Object load(CacheHint hint) Overridable. void logStatistic() Writes cache statistic message to the log. void onHintClose(CacheHint hint) This method is supposed to be called by the hint object when it is closed. void onTimer() This method is periodically called by the cache registry. void put(CacheHint hint, Object ob) Puts the object in the cache. Object reLoad(CacheHint hint, Object ob) Overridable. Object refresh(CacheHint hint) Re-loads object from the persistent storage void remove(CacheHint hint) Removes an object from the cache. void save(CacheHint hint, Object ob) Puts the object in the cache and stores it in the memory. synchronized void setRefreshTime(int value) Sets cache refresh time in seconds. synchronized void setStatisticTime(int value) Sets the statistic frequency in seconds. synchronized void setTimeout(int value) Sets cache timeout in seconds. synchronized int size() Returns cache size. void store(CacheHint hint, Object ob) Overridable. void unLoad(CacheHint hint) Overridable.
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()
From interface com.microstrategy.utils.cache.Cache abstract void clear() Clears the cache - all entries are removed. abstract void close() Un-register cache from the cache registry. abstract boolean contains(CacheHint hint) abstract void delete(CacheHint hint) Removes object from the cache and persistent storage abstract Object get(CacheHint hint) Finds and returns cached object based on the hint. abstract String getName() Returns cache name. abstract void onHintClose(CacheHint hint) This method is supposed to be called by the hint object when it is closed. abstract void put(CacheHint hint, Object ob) Puts the object in the cache. abstract Object refresh(CacheHint hint) Re-loads object from the persistent storage abstract void remove(CacheHint hint) Removes an object from the cache. abstract void save(CacheHint hint, Object ob) Puts the object in the cache and stores it in the memory.
From interface java.util.Observer abstract void update(Observable arg0, Object arg1)