Package org.apache.accumulo.core.client

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

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          scanner.setRange(range);
        }
        if (opts.columns != null) {
          for (ScanColumn col : opts.columns) {
            if (col.isSetColQualifier())
              scanner.fetchColumn(ByteBufferUtil.toText(col.colFamily), ByteBufferUtil.toText(col.colQualifier));
            else
              scanner.fetchColumnFamily(ByteBufferUtil.toText(col.colFamily));
          }
        }
      }
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    conn.tableOperations().attachIterator("table1", is);

    Scanner scanner = conn.createScanner("table1", Constants.NO_AUTHS);
    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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      // setup a scanner within the bounds of this split
      for (Pair<Text,Text> c : columns) {
        if (c.getSecond() != null) {
          log.debug("Fetching column " + c.getFirst() + ":" + c.getSecond());
          scanner.fetchColumn(c.getFirst(), c.getSecond());
        } else {
          log.debug("Fetching column family " + c.getFirst());
          scanner.fetchColumnFamily(c.getFirst());
        }
      }
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          scanner.setRange(range);
        }
        if (opts.columns != null) {
          for (ScanColumn col : opts.columns) {
            if (col.isSetColQualifier())
              scanner.fetchColumn(ByteBufferUtil.toText(col.colFamily), ByteBufferUtil.toText(col.colQualifier));
            else
              scanner.fetchColumnFamily(ByteBufferUtil.toText(col.colFamily));
          }
        }
      }
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      // setup a scanner within the bounds of this split
      for (Pair<Text,Text> c : columns) {
        if (c.getSecond() != null) {
          log.debug("Fetching column " + c.getFirst() + ":" + c.getSecond());
          scanner.fetchColumn(c.getFirst(), c.getSecond());
        } else {
          log.debug("Fetching column family " + c.getFirst());
          scanner.fetchColumnFamily(c.getFirst());
        }
      }
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      // setup a scanner within the bounds of this split
      for (Pair<Text,Text> c : columns) {
        if (c.getSecond() != null) {
          log.debug("Fetching column " + c.getFirst() + ":" + c.getSecond());
          scanner.fetchColumn(c.getFirst(), c.getSecond());
        } else {
          log.debug("Fetching column family " + c.getFirst());
          scanner.fetchColumnFamily(c.getFirst());
        }
      }
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    conn.tableOperations().attachIterator("table1", is);

    Scanner scanner = conn.createScanner("table1", Constants.NO_AUTHS);
    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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