    001/*
    002 * Copyright (c) 2007-2016 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
    021package cascading.flow;
    022
    023/**
    024 * Constants to be used as key in {@link FlowStep#getFlowStepDescriptor}.
    025 * <p/>
    026 * See also {@link FlowDescriptors}.
    027 */
    028public interface FlowNodeDescriptors
    029  {
    030  /** String that can be used as a record separator. */
    031  String VALUE_SEPARATOR = "\u001E";
    032
    033  /** Briefly describes the current FlowStep * */
    034  String DESCRIPTION = "description";
    035
    036  /** Code or line numbers to identify the code this node is executing */
    037  String TRACE = "trace";
    038
    039  /** Id of the FlowStep in an external system * */
    040  String EXTERNAL_ID = "external_id";
    041
    042  /** Name of the FlowStep in an external system * */
    043  String EXTERNAL_NAME = "external_name";
    044
    045  /** URL of the FlowStep in an external system * */
    046  String EXTERNAL_URL = "external_url";
    047  }