    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.planner;
    022
    023import cascading.flow.FlowStep;
    024import cascading.flow.planner.process.FlowNodeFactory;
    025import cascading.flow.planner.process.FlowStepFactory;
    026import cascading.tap.Tap;
    027import cascading.util.Util;
    028
    029/**
    030 *
    031 */
    032public abstract class BaseFlowStepFactory<Config> implements FlowStepFactory<Config>
    033  {
    034  FlowNodeFactory flowNodeFactory;
    035
    036  protected BaseFlowStepFactory()
    037    {
    038    }
    039
    040  public BaseFlowStepFactory( FlowNodeFactory flowNodeFactory )
    041    {
    042    this.flowNodeFactory = flowNodeFactory;
    043    }
    044
    045  public String makeFlowStepName( FlowStep flowStep, int numSteps, int stepNum )
    046    {
    047    Tap sink = Util.getFirst( flowStep.getSinkTaps() );
    048
    049    stepNum++; // number more sensical (5/5)
    050
    051    if( sink == null || sink.isTemporary() )
    052      return String.format( "(%d/%d)", stepNum, numSteps );
    053
    054    String identifier = sink.getIdentifier();
    055
    056    if( Util.isEmpty( identifier ) )
    057      return String.format( "(%d/%d)", stepNum, numSteps );
    058
    059    if( identifier.length() > 25 )
    060      identifier = String.format( "...%25s", identifier.substring( identifier.length() - 25 ) );
    061
    062    return String.format( "(%d/%d) %s", stepNum, numSteps, identifier );
    063    }
    064
    065  @Override
    066  public FlowNodeFactory getFlowNodeFactory()
    067    {
    068    return flowNodeFactory;
    069    }
    070  }