Method read

src/java/org/apache/nutch/host/HostDbReader.java:44–71

(String key)

      .getLogger(MethodHandles.lookup().lookupClass());

  private void read(String key) throws ClassNotFoundException, IOException,
      Exception {

    DataStore<String, Host> datastore = StorageUtils.createWebStore(getConf(),
        String.class, Host.class);

    Query<String, Host> query = datastore.newQuery();
    // possibly add a contraint to the query
    if (key != null) {
      query.setKey(TableUtil.reverseUrl(key));
    }
    // query.setFields(Host._ALL_FIELDS);
    Result<String, Host> result = datastore.execute(query);

    while (result.next()) {
      String hostName = null;
      try {
        hostName = TableUtil.unreverseUrl(result.getKey());
        Host host = result.get();
        System.out.println(hostName);
        System.out.println(host);
      } catch (Exception e) {
        LOG.error("Failed to get host from hostname {}: {}", hostName, e.getMessage());
      }
    }
    result.close();
    datastore.close();
  }

  public static void main(String[] args) throws Exception {
    int res = ToolRunner.run(NutchConfiguration.create(), new HostDbReader(),