@Override
 public boolean accept(
     K key,
     Object oldValue,
     Metadata oldMetadata,
     Object newValue,
     Metadata newMetadata,
     EventType eventType) {
   return filter.accept(key);
 }
Beispiel #2
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  @Override
  public void process(
      KeyFilter<? super K> filter,
      final CacheLoaderTask<K, V> task,
      Executor executor,
      final boolean fetchValue,
      final boolean fetchMetadata) {
    filter = PersistenceUtil.notNull(filter);
    ArrayList<KeyValuePair<K, FileEntry>> keysToLoad = new ArrayList<>(entries.size());
    synchronized (entries) {
      for (Map.Entry<K, FileEntry> e : entries.entrySet()) {
        if (filter.accept(e.getKey())) keysToLoad.add(new KeyValuePair<>(e.getKey(), e.getValue()));
      }
      Collections.sort(
          keysToLoad,
          new Comparator<KeyValuePair<K, FileEntry>>() {
            @Override
            public int compare(KeyValuePair<K, FileEntry> o1, KeyValuePair<K, FileEntry> o2) {
              long offset1 = o1.getValue().offset;
              long offset2 = o2.getValue().offset;
              return offset1 < offset2 ? -1 : offset1 == offset2 ? 0 : 1;
            }
          });
      // keysToLoad values (i.e. FileEntries) must not be used past this point
    }

    ExecutorAllCompletionService eacs = new ExecutorAllCompletionService(executor);

    final TaskContextImpl taskContext = new TaskContextImpl();
    for (KeyValuePair<K, FileEntry> e : keysToLoad) {
      if (taskContext.isStopped()) break;

      final K key = e.getKey();
      eacs.submit(
          new Callable<Void>() {
            @Override
            public Void call() throws Exception {
              try {
                final MarshalledEntry marshalledEntry = _load(key, fetchValue, fetchMetadata);
                if (marshalledEntry != null) {
                  task.processEntry(marshalledEntry, taskContext);
                }
                return null;
              } catch (Exception e) {
                log.errorExecutingParallelStoreTask(e);
                throw e;
              }
            }
          });
    }
    eacs.waitUntilAllCompleted();
    if (eacs.isExceptionThrown()) {
      throw new PersistenceException("Execution exception!", eacs.getFirstException());
    }
  }
  @Override
  public void executeTask(
      final KeyFilter<? super K> filter,
      final BiConsumer<? super K, InternalCacheEntry<K, V>> action)
      throws InterruptedException {
    if (filter == null) throw new IllegalArgumentException("No filter specified");
    if (action == null) throw new IllegalArgumentException("No action specified");

    entries.forEach(
        (K key, InternalCacheEntry<K, V> value) -> {
          if (filter.accept(key)) {
            action.accept(key, value);
          }
        });
    // TODO figure out the way how to do interruption better (during iteration)
    if (Thread.currentThread().isInterrupted()) {
      throw new InterruptedException();
    }
  }