content: package com.alibaba.datax.plugin.reader.gaussdbreader;
  
  import com.alibaba.datax.common.exception.DataXException;
  import com.alibaba.datax.common.plugin.RecordSender;
  import com.alibaba.datax.common.spi.Reader;
  import com.alibaba.datax.common.util.Configuration;
  import com.alibaba.datax.plugin.rdbms.reader.CommonRdbmsReader;
  import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
  import com.alibaba.datax.plugin.rdbms.util.DataBaseType;
  
  import java.util.List;
  
  public class GaussDbReader extends Reader {
  
      private static final DataBaseType DATABASE_TYPE = DataBaseType.GaussDB;
  
      public static class Job extends Reader.Job {
  
          private Configuration originalConfig;
          private CommonRdbmsReader.Job commonRdbmsReaderMaster;
  
          @Override
          public void init() {
              this.originalConfig = super.getPluginJobConf();
              int fetchSize = this.originalConfig.getInt(com.alibaba.datax.plugin.rdbms.reader.Constant.FETCH_SIZE,
                      Constant.DEFAULT_FETCH_SIZE);
              if (fetchSize < 1) {
                  throw DataXException.asDataXException(DBUtilErrorCode.REQUIRED_VALUE,
                          String.format("您配置的fetchSize有误，根据DataX的设计，fetchSize : [%d] 设置值不能小于 1.", fetchSize));
              }
              this.originalConfig.set(com.alibaba.datax.plugin.rdbms.reader.Constant.FETCH_SIZE, fetchSize);
  
              this.commonRdbmsReaderMaster = new CommonRdbmsReader.Job(DATABASE_TYPE);
              this.commonRdbmsReaderMaster.init(this.originalConfig);
          }
  
          @Override
          public List<Configuration> split(int adviceNumber) {
              return this.commonRdbmsReaderMaster.split(this.originalConfig, adviceNumber);
          }
  
          @Override
          public void post() {
              this.commonRdbmsReaderMaster.post(this.originalConfig);
          }
  
          @Override
          public void destroy() {
              this.commonRdbmsReaderMaster.destroy(this.originalConfig);
          }
  
      }
  
      public static class Task extends Reader.Task {
  
          private Configuration readerSliceConfig;
          private CommonRdbmsReader.Task commonRdbmsReaderSlave;
  
          @Override
          public void init() {
              this.readerSliceConfig = super.getPluginJobConf();
              this.commonRdbmsReaderSlave = new CommonRdbmsReader.Task(DATABASE_TYPE,super.getTaskGroupId(), super.getTaskId());
              this.commonRdbmsReaderSlave.init(this.readerSliceConfig);
          }
  
          @Override
          public void startRead(RecordSender recordSender) {
              int fetchSize = this.readerSliceConfig.getInt(com.alibaba.datax.plugin.rdbms.reader.Constant.FETCH_SIZE);
  
              this.commonRdbmsReaderSlave.startRead(this.readerSliceConfig, recordSender,
                      super.getTaskPluginCollector(), fetchSize);
          }
  
          @Override
          public void post() {
              this.commonRdbmsReaderSlave.post(this.readerSliceConfig);
          }
  
          @Override
          public void destroy() {
              this.commonRdbmsReaderSlave.destroy(this.readerSliceConfig);
          }
  
      }
  
  }
  