2 * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.dom.api;
10 import com.google.common.util.concurrent.FluentFuture;
11 import javax.annotation.Nonnull;
12 import javax.annotation.Nullable;
13 import org.eclipse.jdt.annotation.NonNull;
14 import org.opendaylight.mdsal.common.api.CommitInfo;
15 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
16 import org.opendaylight.yangtools.concepts.Identifiable;
19 * Write transaction that provides cursor's with write access to the data tree.
21 public interface DOMDataTreeCursorAwareTransaction extends DOMDataTreeCursorProvider, Identifiable<Object> {
24 * Create a {@link DOMDataTreeWriteCursor} anchored at the specified path.
25 * There can only be one cursor open at a time.
27 * @param path Path at which the cursor is to be anchored
28 * @return write cursor at the desired location.
29 * @throws IllegalStateException when there's an open cursor, or this transaction is closed already.
32 @Nullable DOMDataTreeWriteCursor createCursor(@Nonnull DOMDataTreeIdentifier path);
35 * Cancels the transaction.
36 * A transaction can only be cancelled if it was not yet committed.
37 * Invoking cancel() on a failed or already canceled will have no effect, and transaction is
38 * considered cancelled.
39 * Invoking cancel() on a finished transaction (future returned by {@link #commit()} already
40 * successfully completed will always fail (return false).
42 * @return <tt>false</tt> if the task could not be cancelled, typically because it has already
43 * completed normally; <tt>true</tt> otherwise
49 * Submits this transaction to be asynchronously applied to update the logical data tree. The
50 * returned CheckedFuture conveys the result of applying the data changes.
53 * <b>Note:</b> It is strongly recommended to process the CheckedFuture result in an
54 * asynchronous manner rather than using the blocking get() method.
55 * This call logically seals the transaction, which prevents the client from further changing
56 * data tree using this transaction's cursor. Any subsequent calls to
57 * <code>createCursorCursor(DOMDataTreeIdentifier</code>
58 * or any of the cursor's methods will fail with {@link IllegalStateException}.
59 * The transaction is marked as submitted and enqueued into the shard back-end for
62 * @return a FluentFuture containing the result of the commit information. The Future blocks until the commit
63 * operation is complete. A successful commit returns nothing. On failure, the Future will fail with a
64 * {@link TransactionCommitFailedException} or an exception derived from TransactionCommitFailedException.
66 FluentFuture<? extends @NonNull CommitInfo> commit();