-/*
- * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.md.sal.common.api.data;
-
-import org.opendaylight.yangtools.concepts.Path;
-import org.opendaylight.yangtools.yang.common.RpcResult;
-/**
- * Two phase commit handler (cohort) of the two-phase commit protocol of data.
- *
- * <p>
- * The provider should expose the implementation of DataCommitHandler if it's
- * functionality depends on any subset of data stored in data repositories, in
- * order to participate in {@link DataBrokerService#commit(DataStoreIdentifier)
- * operation.
- *
- * <p>
- * Operations of two-phase commit handlers should not change data in data store,
- * this is responsibility of the coordinator (broker or some component of the
- * broker).
- *
- * Commit handlers are responsible for changing the internal state of the
- * provider to reflect the committed changes in data.
- *
- * <h3>Two-phase commit</h3>
- *
- * <h4>Commit Request Phase</h4>
- *
- * <ol>
- * <li> <code>Consumer</code> edits data by invocation of
- * <code>DataBrokerService.editCandidateData(DataStoreIdentifier, DataRoot)</code>
- * <li> <code>Consumer</code> starts a commit by invoking
- * <code>DataBrokerService.commit(DataStoreIdentifier)</code>
- * <li> <code>Broker</code> retrieves a list of all registered
- * <code>DataCommitHandlers</code>
- * <li>For each <code>DataCommitHandler</code>
- * <ol>
- * <li><code>Broker</code> invokes a
- * <code>DataCommitHandler.requestCommit(DataStoreIdentifier)</code> operation.
- * <li><code>DataCommitHandler</code> returns a <code>RpcResult</code> with
- * <code>CommitTransaction</code>
- * <li>If the result was successful, broker adds <code>CommitTransaction</code>
- * to the list of opened transactions. If not, brokers stops a commit request
- * phase and starts a rollback phase.
- * </ol>
- * <li><code>Broker</code> starts a commit finish phase
- * </ol>
- *
- * <h4>Commit Finish Phase</h4>
- *
- * <ol>
- * <li>For each <code>CommitTransaction</code> from Commit Request phase
- * <ol>
- * <li><code>Broker</code> broker invokes a
- * <code>CommitTransaction.finish()</code>
- * <li>The provider finishes a commit (applies the change) and returns an
- * <code>RpcResult</code>.
- * </ol>
- * <li>
- * <ul>
- * <li>If all returned results means successful, the brokers end two-phase
- * commit by returning a success commit result to the Consumer.
- * <li>If error occured, the broker starts a commit rollback phase.
- * </ul>
- * </ol>
- *
- * <h4>Commit Rollback Phase</h4>
- * <li>For each <code>DataCommitTransaction</code> from Commit Request phase
- * <ol>
- * <li><code>Broker</code>
- * broker invokes a {@link DataCommitTransaction#finish()}
- * <li>The provider rollbacks a commit and returns an {@link RpcResult} of
- * rollback. </ol>
- * <li>Broker returns a error result to the consumer.
- *
- * @param <P> Class representing a path
- * @param <D> Superclass from which all data objects are derived from.
- * @deprecated Replaced by {@link AsyncConfigurationCommitHandler}
- */
-@Deprecated
-public interface DataCommitHandler<P extends Path<P>, D> {
-
-
- DataCommitTransaction<P, D> requestCommit(DataModification<P,D> modification);
-
- public interface DataCommitTransaction<P extends Path<P>, D> {
-
- DataModification<P,D> getModification();
-
- /**
- *
- * Finishes a commit.
- *
- * This callback is invoked by commit coordinator to finish commit action.
- *
- * The implementation is required to finish transaction or return unsuccessful
- * rpc result if something went wrong.
- *
- * The provider (commit handler) should apply all changes to its state
- * which are a result of data change-
- *
- * @return
- */
- RpcResult<Void> finish() throws IllegalStateException;
-
- /**
- * Rollbacks a commit.
- *
- * This callback is invoked by commit coordinator to finish commit action.
- *
- * The provider (commit handler) should rollback all changes to its state
- * which were a result of previous request commit.
- *
- * @return
- * @throws IllegalStateException
- * If the method is invoked after {@link #finish()}
- */
- RpcResult<Void> rollback() throws IllegalStateException;
- }
-
-}