List of nextRows() Examples

Examples of nextRows()

org.hbase.async.Scanner.nextRows()
Scans a number of rows. Calling this method is equivalent to:
```
 this. {@link #setMaxNumRows setMaxNumRows}(nrows); this. {@link #nextRows() nextRows}(); 
```
@param nrows The maximum number of rows to retrieve. @return A deferred list of rows. @see #setMaxNumRows @see #nextRows()

Examples of org.hbase.async.Scanner.nextRows()

        case 4: scanner.setStartKey(args[3]);
      }
      LOG.info("Start scanner=" + scanner);
      try {
        ArrayList<ArrayList<KeyValue>> rows;
        while ((rows = scanner.nextRows().joinUninterruptibly()) != null) {
          LOG.info("scanned results=" + rows + " from " + scanner);
        }
      } catch (Exception e) {
        LOG.error("Scan failed", e);
      }

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Examples of org.hbase.async.Scanner.nextRows()

            final KeyValue kv = kvs.get(0);
            assertSizeIs(1, kvs);
            assertEq("s" + n, kv.key());
            assertEq("q", kv.qualifier());
            assertEq("v" + n, kv.value());
            return scanner.nextRows(1).addCallback(this);
          } catch (AssertionError e) {
            // Deferred doesn't catch Errors on purpose, so transform any
            // assertion failure into an Exception.
            throw new RuntimeException("Asynchronous failure", e);
          }

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Examples of org.hbase.async.Scanner.nextRows()

            throw new RuntimeException("Asynchronous failure", e);
          }
        }
      }
      try {
        scanner.nextRows(1).addCallback(new cb()).join();
      } finally {
        scanner.close().join();
      }
    }
  }

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Examples of org.hbase.async.Scanner.nextRows()

    Deferred.group(client.put(put1), client.put(put2),
                   client.put(put3)).join();
    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setQualifiers(new byte[][] { { 'a' }, { 'c' } });
    final ArrayList<ArrayList<KeyValue>> rows = scanner.nextRows(2).join();
    assertSizeIs(1, rows);
    final ArrayList<KeyValue> kvs = rows.get(0);
    assertSizeIs(2, kvs);
    assertEq("val1", kvs.get(0).value());
    assertEq("val3", kvs.get(1).value());

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Examples of org.hbase.async.Scanner.nextRows()

    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey("krf ");
    scanner.setStopKey("krf!");
    scanner.setKeyRegexp("[Aa]ccept(ed)?");
    final ArrayList<ArrayList<KeyValue>> rows = scanner.nextRows().join();
    assertSizeIs(2, rows);
    ArrayList<KeyValue> kvs = rows.get(0);
    assertSizeIs(1, kvs);
    assertEq("krfv1", kvs.get(0).value());
    kvs = rows.get(1);

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Examples of org.hbase.async.Scanner.nextRows()

    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey("cpf1");
    scanner.setStopKey("cpf3");
    scanner.setFilter(new ColumnPrefixFilter("qa"));
    final ArrayList<ArrayList<KeyValue>> rows = scanner.nextRows().join();
    assertSizeIs(2, rows);
    ArrayList<KeyValue> kvs = rows.get(0);
    assertSizeIs(2, kvs);
    assertEq("v1", kvs.get(0).value());
    assertEq("v2", kvs.get(1).value());

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Examples of org.hbase.async.Scanner.nextRows()

    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey("crf1");
    scanner.setStopKey("crf3");
    scanner.setFilter(new ColumnRangeFilter("qb", true, "qd4", false));
    final ArrayList<ArrayList<KeyValue>> rows = scanner.nextRows().join();
    assertSizeIs(2, rows);  // One KV from row "fl1" and one from "fl2".
    ArrayList<KeyValue> kvs = rows.get(0);
    assertSizeIs(1, kvs);
    assertEq("v2", kvs.get(0).value());
    kvs = rows.get(1);

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Examples of org.hbase.async.Scanner.nextRows()

    binary_scanner.setStartKey("fc1");
    binary_scanner.setStopKey("fc4");
    binary_scanner.setFilter(
        new RowFilter(CompareOp.LESS, new BinaryComparator(Bytes.UTF8("fc2"))));
    final ArrayList<ArrayList<KeyValue>> binary_rows =
        binary_scanner.nextRows().join();
    assertSizeIs(1, binary_rows);
    assertSizeIs(1, binary_rows.get(0));
    assertEq("v1", binary_rows.get(0).get(0).value());


    final Scanner prefix_scanner = client.newScanner(table);

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Examples of org.hbase.async.Scanner.nextRows()

    prefix_scanner.setStopKey("fc4");
    prefix_scanner.setFilter(
        new RowFilter(CompareOp.GREATER_OR_EQUAL,
            new BinaryPrefixComparator(Bytes.UTF8("fc2"))));
    final ArrayList<ArrayList<KeyValue>> prefix_rows =
        prefix_scanner.nextRows().join();
    assertSizeIs(2, prefix_rows);
    assertSizeIs(1, prefix_rows.get(0));
    assertEq("v2", prefix_rows.get(0).get(0).value());
    assertSizeIs(1, prefix_rows.get(1));
    assertEq("v3", prefix_rows.get(1).get(0).value());

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Examples of org.hbase.async.Scanner.nextRows()

    bit_scanner.setStopKey("fc4");
    bit_scanner.setFilter(
        new RowFilter(CompareOp.EQUAL,
            new BitComparator(Bytes.UTF8("fc2"), BitComparator.BitwiseOp.XOR)));
    final ArrayList<ArrayList<KeyValue>> bit_rows =
        bit_scanner.nextRows().join();
    assertSizeIs(2, bit_rows);
    assertSizeIs(1, bit_rows.get(0));
    assertEq("v1", bit_rows.get(0).get(0).value());
    assertSizeIs(1, bit_rows.get(1));
    assertEq("v3", bit_rows.get(1).get(0).value());

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