Package mondrian.rolap.cache

Class SmartCacheImpl<K,V>

java.lang.Object
mondrian.rolap.cache.SmartCacheImpl<K,V>
All Implemented Interfaces:
SmartCache<K,V>
Direct Known Subclasses:
HardSmartCache, SoftSmartCache
public abstract class SmartCacheImpl<K,V> extends Object implements SmartCache<K,V>
A base implementation of the SmartCache interface which enforces synchronization with a ReadWrite lock.

  • Constructor Details

    • SmartCacheImpl

      public SmartCacheImpl()

  • Method Details

    • iteratorImpl

      protected abstract Iterator<Map.Entry<K,V>> iteratorImpl()
      Must provide an iterator on the contents of the cache. It does not need to be thread safe because we will handle that in SmartCacheImpl.

    • putImpl

      protected abstract V putImpl(K key, V value)

    • getImpl

      protected abstract V getImpl(K key)

    • removeImpl

      protected abstract V removeImpl(K key)

    • clearImpl

      protected abstract void clearImpl()

    • sizeImpl

      protected abstract int sizeImpl()

    • put

      public V put(K key, V value)
      Description copied from interface: SmartCache
      Places a key/value pair into the cache.
      Specified by:
      put in interface SmartCache<K,V>
      Parameters:
      key - Key
      value - Value
      Returns:
      the previous value of key or null

    • get

      public V get(K key)
      Description copied from interface: SmartCache
      Looks up and returns a cache value according to a given key. If the cache does not correspond an entry corresponding to the key, null is returned.
      Specified by:
      get in interface SmartCache<K,V>

    • remove

      public V remove(K key)
      Description copied from interface: SmartCache
      Removes a key from the cache.
      Specified by:
      remove in interface SmartCache<K,V>
      Parameters:
      key - Key
      Returns:
      Previous value associated with the key

    • clear

      public void clear()
      Description copied from interface: SmartCache
      Clears the contents of this cache.
      Specified by:
      clear in interface SmartCache<K,V>

    • size

      public int size()
      Description copied from interface: SmartCache
      Returns the number of elements in cache.
      Specified by:
      size in interface SmartCache<K,V>

    • execute

      public void execute(SmartCache.SmartCacheTask<K,V> task)
      Description copied from interface: SmartCache
      Executes a task over the contents of the cache and guarantees exclusive write access while processing.
      Specified by:
      execute in interface SmartCache<K,V>
      Parameters:
      task - The task to execute.