Пример #1
0
  /**
   * 遍历多行
   *
   * @param tableName 表名
   * @param start_rowkey 开始行键
   * @param stop_rowkey 结束行键
   * @return 行列表
   */
  public ArrayList<HbaseRow> scanRows(String tableName, String start_rowkey, String stop_rowkey) {
    ResultScanner rowstmp = null;
    ArrayList<HbaseRow> rows = null;

    try {
      Scan scan = new Scan();
      scan.setStartRow(Bytes.toBytes(start_rowkey));
      scan.setStopRow(Bytes.toBytes(stop_rowkey));
      HTable table = new HTable(conf, Bytes.toBytes(tableName));
      rowstmp = table.getScanner(scan);
      rows = new ArrayList<>();

      for (Result rowtmp : rowstmp) {
        HbaseRow row = new HbaseRow();
        row.rowkey = Bytes.toString(rowtmp.getRow());
        for (Cell cell : rowtmp.listCells()) {
          HbaseColumn col = new HbaseColumn(cell);
          row.cols.add(col);
        }
        rows.add(row);
      }
    } catch (Exception e) {
      logger.error("scanRows failed", e);
    } finally {
      rowstmp.close();
    }
    return rows;
  }
Пример #2
0
  /**
   * 查询单行
   *
   * @param tableName 表名
   * @param rowKey 行键名
   * @return 行
   */
  public HbaseRow getRow(String tableName, String rowKey) {
    HbaseRow row = null;

    try {
      Get get = new Get(Bytes.toBytes(rowKey));
      HTable table = new HTable(conf, Bytes.toBytes(tableName)); // 获取表
      Result rowtmp = table.get(get);
      row = new HbaseRow();

      row.rowkey = Bytes.toString(rowtmp.getRow());
      for (Cell cell : rowtmp.listCells()) {
        HbaseColumn col = new HbaseColumn(cell);
        row.cols.add(col);
      }
    } catch (Exception e) {
      logger.error("getRow failed", e);
    }
    return row;
  }