Package org.apache.hadoop.hbase.client

Examples of org.apache.hadoop.hbase.client.Scan.addColumn()

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      expected.add(kv12);
      expected.add(kv23);
      expected.add(kv22);

      Scan scan = new Scan(row1);
      scan.addColumn(fam1, qf1);
      scan.addColumn(fam1, qf2);
      scan.setMaxVersions(MAX_VERSIONS);
      List<KeyValue> actual = new ArrayList<KeyValue>();
      InternalScanner scanner = region.getScanner(scan);
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      expected.add(kv23);
      expected.add(kv22);

      Scan scan = new Scan(row1);
      scan.addColumn(fam1, qf1);
      scan.addColumn(fam1, qf2);
      scan.setMaxVersions(MAX_VERSIONS);
      List<KeyValue> actual = new ArrayList<KeyValue>();
      InternalScanner scanner = region.getScanner(scan);

      boolean hasNext = scanner.next(actual);
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      expected.add(kv24);
      expected.add(kv23);
      expected.add(kv22);

      Scan scan = new Scan(row1);
      scan.addColumn(fam1, qf1);
      scan.addColumn(fam1, qf2);
      int versions = 3;
      scan.setMaxVersions(versions);
      List<KeyValue> actual = new ArrayList<KeyValue>();
      InternalScanner scanner = region.getScanner(scan);
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      expected.add(kv23);
      expected.add(kv22);

      Scan scan = new Scan(row1);
      scan.addColumn(fam1, qf1);
      scan.addColumn(fam1, qf2);
      int versions = 3;
      scan.setMaxVersions(versions);
      List<KeyValue> actual = new ArrayList<KeyValue>();
      InternalScanner scanner = region.getScanner(scan);
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      put.add(family, col1, Bytes.toBytes(40L));
      region.put(put);

      Scan scan = new Scan(row3, row4);
      scan.setMaxVersions();
      scan.addColumn(family, col1);
      InternalScanner s = region.getScanner(scan);

      List<KeyValue> results = new ArrayList<KeyValue>();
      assertEquals(false, s.next(results));
      assertEquals(0, results.size());
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  @Test
  public void testMinWithFilter() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    scan.setFilter(f);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    BigDecimal min = null;
    min = aClient.min(TEST_TABLE, ci, scan);
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   */
  @Test
  public void testSumWithValidRange() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    BigDecimal sum = aClient.sum(TEST_TABLE, ci, scan);
    assertEquals(new BigDecimal("190.00"), sum);
  }

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   */
  @Test
  public void testSumWithValidRange2() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    scan.setStartRow(ROWS[5]);
    scan.setStopRow(ROWS[15]);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    BigDecimal sum = aClient.sum(TEST_TABLE, ci, scan);
    assertEquals(new BigDecimal("95.00"), sum);
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   */
  @Test
  public void testAvgWithValidRange() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(9.5, avg, 0);
  }

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   */
  @Test
  public void testAvgWithValidRange2() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    scan.setStartRow(ROWS[5]);
    scan.setStopRow(ROWS[15]);
    final ColumnInterpreter<BigDecimal, BigDecimal> ci = new BigDecimalColumnInterpreter();
    double avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(9.5, avg, 0);
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