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.flow;
023
024/**
025 * Constants to be used as key in {@link FlowStep#getFlowStepDescriptor}.
026 * <p>
027 * See also {@link FlowDescriptors}.
028 */
029public interface FlowNodeDescriptors
030  {
031  /** String that can be used as a record separator. */
032  String VALUE_SEPARATOR = "\u001E";
033
034  /** Briefly describes the current FlowStep * */
035  String DESCRIPTION = "description";
036
037  /** Code or line numbers to identify the code this node is executing */
038  String TRACE = "trace";
039
040  /** Id of the FlowStep in an external system * */
041  String EXTERNAL_ID = "external_id";
042
043  /** Name of the FlowStep in an external system * */
044  String EXTERNAL_NAME = "external_name";
045
046  /** URL of the FlowStep in an external system * */
047  String EXTERNAL_URL = "external_url";
048  }