MAPREDUCE服务 MRS-HBase应用开发规则:Table实例的创建

时间：2024-04-07 13:45:04

MAPREDUCE服务 MRS HBase

Table实例的创建

public abstract class TableOperationImpl {
  private static Configuration conf = null;
  private static Connection connection = null;
  private static Table table = null;
  private static TableName tableName = TableName.valueOf("sample_table");

  public TableOperationImpl() {
    init();
  }
  public void init() {
    conf = ConfigurationSample.getConfiguration();
    try {
      connection = ConnectionFactory.createConnection(conf);
      table = conn.getTable(tableName);
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  public void close() {
    if (table != null) {
      try {
        table.close();
      } catch (IOException e) {
        System.out.println("Can not close table.");
      } finally {
        table = null;
      }
    }
    if (connection != null) {
      try {
        connection.close();
      } catch (IOException e) {
        System.out.println("Can not close connection.");
      } finally {
        connection = null;
      }
    }
  }
  public void operate() {
    init();
    process();
    close();
  }
}

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