content: /*
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.pgasync;
  
  import java.util.concurrent.CompletableFuture;
  
  /**
   * A unit of work. Transactions must be committed or rolled back, otherwise a
   * connection left is a stale state. A rollback is automatically performed after
   * backend error.
   *
   * @author Antti Laisi
   */
  public interface Transaction extends QueryExecutor {
  
      /**
       * Commits a transaction
       */
      CompletableFuture<Void> commit();
  
      /**
       * Rollbacks a transaction.
       */
      CompletableFuture<Void> rollback();
  
      /**
       * Commits a transaction and rollbacks it if an error occurs.
       */
      CompletableFuture<Void> close();
  
      /**
       * Returns a connection, this transaction belongs to.
       */
      Connection getConnection();
  
  }
  