001    /*
002     * Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
003     *
004     * Project and contact information: http://www.cascading.org/
005     *
006     * This file is part of the Cascading project.
007     *
008     * Licensed under the Apache License, Version 2.0 (the "License");
009     * you may not use this file except in compliance with the License.
010     * You may obtain a copy of the License at
011     *
012     *     http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing, software
015     * distributed under the License is distributed on an "AS IS" BASIS,
016     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017     * See the License for the specific language governing permissions and
018     * limitations under the License.
019     */
020    
021    package cascading.tap;
022    
023    /**
024     * Enum SinkMode identifies supported modes a Tap may utilize when used as a sink.
025     * <p/>
026     * Mode KEEP is the default. Typically a failure will result if the resource exists and there is an attempt to
027     * write to it.
028     * <p/>
029     * Mode REPLACE will delete/remove the resource before any attempts to write.
030     * <p/>
031     * Mode UPDATE will attempt to re-use to the resource, if supported, and update data in place.
032     */
033    public enum SinkMode
034      {
035        KEEP,
036        REPLACE,
037        UPDATE
038      }