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   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package com.aliyun.odps.mapred.local.function;
  
  import java.io.IOException;
  
  import org.junit.Test;
  
  import com.aliyun.odps.OdpsException;
  import com.aliyun.odps.data.Record;
  import com.aliyun.odps.data.TableInfo;
  import com.aliyun.odps.local.common.WareHouse;
  import com.aliyun.odps.mapred.JobClient;
  import com.aliyun.odps.mapred.MapperBase;
  import com.aliyun.odps.mapred.conf.JobConf;
  import com.aliyun.odps.mapred.local.utils.CommonUtils;
  import com.aliyun.odps.mapred.local.utils.TestUtils;
  import com.aliyun.odps.mapred.utils.InputUtils;
  import com.aliyun.odps.mapred.utils.OutputUtils;
  import com.aliyun.odps.mapred.utils.SchemaUtils;
  
  /**
   * TestLongMinvalue(LONG_MIN+1 ~ LONG_MAX valid, LONG_MIN is null)
   */
  public class LongMinvalue {
  
    public static class Mapper1 extends MapperBase {
  
      @Override
      public void setup(TaskContext context) throws IOException {
        Record result = context.createOutputRecord();
        String tag = context.getJobConf().get("long.value");
        Long val = null;
  
        if (tag.equals("MAX") || tag.equals("max")) {
          val = Long.MAX_VALUE;
        } else if (tag.equals("MIN") || tag.equals("min")) {
          val = Long.MIN_VALUE + 1;
        } else if (tag.equals("NULL") || tag.equals("null")) {
          val = null;
          ;
        } else if (tag.equals("long.min") || tag.equals("LONG.MIN")) {
          val = Long.MIN_VALUE;
        }
  
        result.set(0, val);
  
        context.write(result);
      }
    }
  
    public static class Mapper2 extends MapperBase {
  
      @Override
      public void map(long recordNum, Record record, TaskContext context)
          throws IOException {
        Long col = (Long) record.get(0);
        String tag = context.getJobConf().get("long.value");
        Long val = null;
  
        if (tag.equals("MAX") || tag.equals("max")) {
          val = Long.MAX_VALUE;
        } else if (tag.equals("MIN") || tag.equals("min")) {
          val = Long.MIN_VALUE + 1;
        } else if (tag.equals("NULL") || tag.equals("null")) {
          val = null;
        } else if (tag.equals("long.min") || tag.equals("LONG.MIN")) {
          val = Long.MIN_VALUE;
        }
  
        if ((val == null && col != null) || (val != null && col == null)) {
          throw new IOException("test long value " + val + " failed.");
        } else if (val != null && col != null && !val.equals(col)) {
          throw new IOException("test long value " + val + " failed.");
        }
      }
    }
  
    public static void main(String[] args) throws OdpsException {
      if (args.length != 2) {
        System.out.println("TestLongMinvalue <out_table> <long_value>");
        System.exit(1);
      }
  
      JobConf job1 = new JobConf();
  
      job1.setMapperClass(Mapper1.class);
  
      job1.setNumReduceTasks(0);
  
      job1.set("long.value", args[1]);
  
      InputUtils.addTable(TableInfo.builder().tableName(CommonUtils.GENERAL_INPUT_TABLE).build(), job1);
      OutputUtils.addTable(TableInfo.builder().tableName(args[0]).build(), job1);
  
      job1.setMapOutputKeySchema(SchemaUtils
                                     .fromString(CommonUtils.GENERAL_KEY_ROWSCHEMA));
      job1.setMapOutputValueSchema(SchemaUtils
                                       .fromString(CommonUtils.GENERAL_VALUE_ROWSCHEMA));
  
      JobClient.runJob(job1);
  
      // Job2
      JobConf job2 = new JobConf();
  
      job2.setMapperClass(Mapper2.class);
      job2.setNumReduceTasks(0);
  
      job2.set("long.value", args[1]);
  
      InputUtils.addTable(TableInfo.builder().tableName(args[0]).build(), job2);
  
      job2.setMapOutputKeySchema(SchemaUtils
                                     .fromString(CommonUtils.GENERAL_KEY_ROWSCHEMA));
      job2.setMapOutputValueSchema(SchemaUtils
                                       .fromString(CommonUtils.GENERAL_VALUE_ROWSCHEMA));
  
      JobClient.runJob(job2);
    }
    
    @Test
    public void test() throws Exception {
      WareHouse wareHouse = WareHouse.getInstance();
      String project = TestUtils.odps_test_mrtask;
      String outputTable = "mr_longminvalue_out";
  
      TestUtils.setEnvironment(project);
      
      new LongMinvalue().main(new String[]{outputTable,"null"});
    }
  }
  