Package org.apache.accumulo.core.client

Examples of org.apache.accumulo.core.client.Scanner.fetchColumn()

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    conn.tableOperations().attachIterator("table1", is);
   
    Scanner scanner = conn.createScanner("table1", Authorizations.EMPTY);
    assertEquals(new HashSet<String>(Arrays.asList("2", "3")), getRows(scanner));

    scanner.fetchColumn(new Text("cf1"), new Text("cq2"));
    assertEquals(new HashSet<String>(Arrays.asList("1", "3")), getRows(scanner));

    scanner.clearColumns();
    scanner.fetchColumn(new Text("cf1"), new Text("cq1"));
    assertEquals(new HashSet<String>(), getRows(scanner));
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    scanner.fetchColumn(new Text("cf1"), new Text("cq2"));
    assertEquals(new HashSet<String>(Arrays.asList("1", "3")), getRows(scanner));

    scanner.clearColumns();
    scanner.fetchColumn(new Text("cf1"), new Text("cq1"));
    assertEquals(new HashSet<String>(), getRows(scanner));

    scanner.setRange(new Range("0", "4"));
    scanner.clearColumns();
    assertEquals(new HashSet<String>(Arrays.asList("2", "3")), getRows(scanner));
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    scanner.clearColumns();
    assertEquals(new HashSet<String>(), getRows(scanner));

    scanner.setRange(new Range("4"));
    scanner.clearColumns();
    scanner.fetchColumn(new Text("cf1"), new Text("cq2"));
    scanner.fetchColumn(new Text("cf1"), new Text("cq4"));
    assertEquals(new HashSet<String>(Arrays.asList("4")), getRows(scanner));
   
  }
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    assertEquals(new HashSet<String>(), getRows(scanner));

    scanner.setRange(new Range("4"));
    scanner.clearColumns();
    scanner.fetchColumn(new Text("cf1"), new Text("cq2"));
    scanner.fetchColumn(new Text("cf1"), new Text("cq4"));
    assertEquals(new HashSet<String>(Arrays.asList("4")), getRows(scanner));
   
  }

  @Test
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    cm5.put("tx", "seq", "3");
    Assert.assertEquals(Status.REJECTED, cw.write(cm5).getStatus());

    // ensure rejected mutations did not write
    Scanner scanner = conn.createScanner(tableName, Authorizations.EMPTY);
    scanner.fetchColumn(new Text("name"), new Text("last"));
    scanner.setRange(new Range("99006"));
    Assert.assertEquals("Doe", scanner.iterator().next().getValue().toString());

    // test w/ two conditions that are met
    ConditionalMutation cm6 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("2"), new Condition("name", "last").setValue("Doe"));
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    Assert.assertEquals(Status.ACCEPTED, cw.write(cm0).getStatus());

    Scanner scanner = conn.createScanner(tableName, auths);
    scanner.setRange(new Range("99006"));
    // TODO verify all columns
    scanner.fetchColumn(new Text("tx"), new Text("seq"));
    Entry<Key,Value> entry = scanner.iterator().next();
    Assert.assertEquals("1", entry.getValue().toString());
    long ts = entry.getKey().getTimestamp();

    // test wrong colf
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    VersioningIterator.setMaxVersions(iterConfig3, 1);

    Scanner scanner = conn.createScanner(tableName, new Authorizations());
    scanner.addScanIterator(iterConfig);
    scanner.setRange(new Range("ACCUMULO-1000"));
    scanner.fetchColumn(new Text("count"), new Text("comments"));

    Assert.assertEquals("3", scanner.iterator().next().getValue().toString());

    ConditionalWriter cw = conn.createConditionalWriter(tableName, new ConditionalWriterConfig());
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    }

    Assert.assertEquals(3, count);

    Scanner scanner = conn.createScanner(tableName, new Authorizations("A"));
    scanner.fetchColumn(new Text("tx"), new Text("seq"));

    for (String row : new String[] {"99006", "59056", "19059"}) {
      scanner.setRange(new Range(row));
      Assert.assertEquals("1", scanner.iterator().next().getValue().toString());
    }
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    scanner.setRange(new Range("99006"));
    Assert.assertEquals("2", scanner.iterator().next().getValue().toString());

    scanner.clearColumns();
    scanner.fetchColumn(new Text("name"), new Text("last"));
    Assert.assertEquals("Doe", scanner.iterator().next().getValue().toString());

    cw.close();
  }
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    }

    Assert.assertEquals(4, rows.size());

    Scanner scanner = conn.createScanner(tableName, new Authorizations("A"));
    scanner.fetchColumn(new Text("tx"), new Text("seq"));

    Iterator<Entry<Key,Value>> iter = scanner.iterator();
    Assert.assertEquals("1", iter.next().getValue().toString());
    Assert.assertFalse(iter.hasNext());
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