Package org.hbase.async

Examples of org.hbase.async.BinaryComparator


    final Scanner binary_scanner = client.newScanner(table);
    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());
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    final Scanner row_scanner = client.newScanner(table);
    row_scanner.setStartKey("cf1");
    row_scanner.setStopKey("cf4");
    row_scanner.setFilter(
        new RowFilter(CompareOp.NOT_EQUAL, new BinaryComparator(Bytes.UTF8("cf2"))));
    final ArrayList<ArrayList<KeyValue>> row_rows =
        row_scanner.nextRows().join();
    assertSizeIs(2, row_rows);
    assertSizeIs(1, row_rows.get(0));
    assertEq("v1", row_rows.get(0).get(0).value());
    assertSizeIs(2, row_rows.get(1));
    assertEq("v3", row_rows.get(1).get(0).value());
    assertEq("v4", row_rows.get(1).get(1).value());

    final Scanner family_scanner = client.newScanner(table);
    family_scanner.setFilter(
        new FamilyFilter(CompareOp.LESS_OR_EQUAL,
            new BinaryComparator(Bytes.UTF8("aSomeOtherFamily"))));
    final ArrayList<ArrayList<KeyValue>> family_rows =
        family_scanner.nextRows().join();
    assertNull(family_rows);

    final Scanner qualifier_scanner = client.newScanner(table);
    qualifier_scanner.setStartKey("cf1");
    qualifier_scanner.setStopKey("cf4");
    qualifier_scanner.setFilter(
        new QualifierFilter(CompareOp.GREATER,
            new BinaryComparator(Bytes.UTF8("b"))));
    final ArrayList<ArrayList<KeyValue>> qualifier_rows =
        qualifier_scanner.nextRows().join();
    assertSizeIs(1, qualifier_rows);
    assertSizeIs(2, qualifier_rows.get(0));
    assertEq("v3", qualifier_rows.get(0).get(0).value());
    assertEq("v4", qualifier_rows.get(0).get(1).value());

    final Scanner value_scanner = client.newScanner(table);
    value_scanner.setStartKey("cf1");
    value_scanner.setStopKey("cf4");
    value_scanner.setFilter(
        new ValueFilter(CompareOp.GREATER_OR_EQUAL,
            new BinaryComparator(Bytes.UTF8("v3"))));
    final ArrayList<ArrayList<KeyValue>> value_rows =
        value_scanner.nextRows().join();
    assertSizeIs(1, value_rows);
    assertSizeIs(2, value_rows.get(0));
    assertEq("v3", value_rows.get(0).get(0).value());
    assertEq("v4", value_rows.get(0).get(1).value());

    final Scanner dependent_scanner = client.newScanner(table);
    dependent_scanner.setMaxNumKeyValues(-1);
    dependent_scanner.setFilter(
        new DependentColumnFilter(Bytes.UTF8(family), Bytes.UTF8("dep")));
    final ArrayList<ArrayList<KeyValue>> dependent_rows =
        dependent_scanner.nextRows().join();
    assertSizeIs(1, dependent_rows);
    assertSizeIs(2, dependent_rows.get(0));
    assertEq("v3", dependent_rows.get(0).get(0).value());
    assertEq("v4", dependent_rows.get(0).get(1).value());

    final Scanner dependent_value_scanner = client.newScanner(table);
    dependent_value_scanner.setMaxNumKeyValues(-1);
    dependent_value_scanner.setFilter(
        new DependentColumnFilter(
            Bytes.UTF8(family),
            Bytes.UTF8("dep"),
            true,
            CompareOp.EQUAL,
            new BinaryComparator(Bytes.UTF8("v4"))));
    final ArrayList<ArrayList<KeyValue>> dependent_value_rows =
        dependent_value_scanner.nextRows().join();
    assertSizeIs(1, dependent_value_rows);
    assertSizeIs(1, dependent_value_rows.get(0));
    assertEq("v3", dependent_value_rows.get(0).get(0).value());
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