Examples of ChangeDispatcher

org.apache.jackrabbit.oak.plugins.observation.ChangeDispatcher

A {@code ChangeDispatcher} instance records changes to a {@link NodeStore}and dispatches them to interested parties.

The {@link #newHook(ContentSession)} method registers a hook forreporting changes. Actual changes are reported by calling {@link Hook#contentChanged(NodeState,NodeState)}. Such changes are considered to have occurred on the local cluster node and are recorded as such. Changes that occurred in-between calls to any hook registered with a change processor are considered to have occurred on a different cluster node and are recorded as such.

The {@link #newListener()} registers a listener for receiving changes reportedinto a change dispatcher by any of its hooks.

org.apache.jackrabbit.oak.spi.commit.ChangeDispatcher

A {@code ChangeDispatcher} instance dispatches content changesto registered {@link Observer}s.

Changes are reported by calling {@link #contentChanged(NodeState,CommitInfo)}.

The {@link #addObserver(Observer)} method registers an {@link Observer} for receivingnotifications for all changes reported to this instance.

    private static final int COMMITS_PER_WRITER = 100;


    @Test
    public void concurrentCommits() throws Exception {
        final MongoNodeStore store = new MongoMK.Builder().getNodeStore();
        ChangeDispatcher dispatcher = new ChangeDispatcher(store.getRoot());
        AtomicBoolean running = new AtomicBoolean(true);
        final CommitQueue queue = new CommitQueue(store, dispatcher);
        final List<Exception> exceptions = Collections.synchronizedList(new ArrayList<Exception>());


        Closeable observer = dispatcher.addObserver(new Observer() {
            private Revision before = new Revision(0, 0, store.getClusterId());


            @Override
            public void contentChanged(@Nonnull NodeState root, @Nullable CommitInfo info) {
                MongoNodeState after = (MongoNodeState) root;

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Examples of ChangeDispatcher

Examples of org.apache.jackrabbit.oak.spi.commit.ChangeDispatcher