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

    regex_scanner.setStartKey("fc1");
    regex_scanner.setStopKey("fc4");
    regex_scanner.setFilter(
        new RowFilter(CompareOp.EQUAL, new RegexStringComparator("fc2")));
    final ArrayList<ArrayList<KeyValue>> regex_rows =
        regex_scanner.nextRows().join();
    assertSizeIs(1, regex_rows);
    assertSizeIs(1, regex_rows.get(0));
    assertEq("v2", regex_rows.get(0).get(0).value());


    final Scanner substring_scanner = client.newScanner(table);

View Full Code Here

    substring_scanner.setStartKey("fc1");
    substring_scanner.setStopKey("fc4");
    substring_scanner.setFilter(
        new RowFilter(CompareOp.EQUAL, new SubstringComparator("2")));
    final ArrayList<ArrayList<KeyValue>> substring_rows =
        substring_scanner.nextRows().join();
    assertSizeIs(1, substring_rows);
    assertSizeIs(1, substring_rows.get(0));
    assertEq("v2", substring_rows.get(0).get(0).value());
  }

View Full Code Here

    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());

View Full Code Here

    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");

View Full Code Here

    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());

View Full Code Here

    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());

View Full Code Here

    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());

View Full Code Here

            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());
  }

View Full Code Here

    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey("fl0");
    scanner.setStopKey("fl9");
    scanner.setFilter(new FilterList(filters));
    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);   // KV from "fl1":
    assertEq("v2", kvs.get(0).value());
    kvs = rows.get(1);

View Full Code Here

    final Scanner scanner = client.newScanner(table);
    scanner.setFamily(family);
    scanner.setStartKey(Bytes.UTF8("tf"));
    scanner.setStopKey(Bytes.UTF8("tf4"));
    scanner.setFilter(new TimestampsFilter(1L, 3L));
    final ArrayList<ArrayList<KeyValue>> rows = scanner.nextRows().join();
    assertSizeIs(2, rows);
    assertSizeIs(1, rows.get(0));
    assertEq("v1", rows.get(0).get(0).value());
    assertSizeIs(1, rows.get(1));
    assertEq("v3", rows.get(1).get(0).value());

View Full Code Here

0 1 2 3

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.