001/*
002 * Copyright (c) 2016-2017 Chris K Wensel <chris@wensel.net>. All Rights Reserved.
003 * Copyright (c) 2007-2017 Xplenty, Inc. All Rights Reserved.
004 *
005 * Project and contact information: http://www.cascading.org/
006 *
007 * This file is part of the Cascading project.
008 *
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *     http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 */
021
022package cascading.tap;
023
024/**
025 * Enum SinkMode identifies supported modes a Tap may utilize when used as a sink.
026 * <p>
027 * Mode KEEP is the default. Typically a failure will result if the resource exists and there is an attempt to
028 * write to it.
029 * <p>
030 * Mode REPLACE will delete/remove the resource before any attempts to write.
031 * <p>
032 * Mode UPDATE will attempt to re-use to the resource, if supported, and update data in place.
033 */
034public enum SinkMode
035  {
036    KEEP,
037    REPLACE,
038    UPDATE
039  }