Examples of org.apache.hadoop.zebra.io.TableScanner.advance()

Class org.apache.hadoop.zebra.io.TableScanner

Examples of org.apache.hadoop.zebra.io.TableScanner.advance()

org.apache.hadoop.zebra.io.TableScanner.advance()
Advance cursor to the next Row. @return true if the cursor is moved. It will return true when the scannermoves the cursor from the last row to the end position. @throws IOException

    Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals("hello world 1", RowValue.get(0));
    Assert.assertEquals(true, RowValue.get(1));


    scanner.advance();


    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals("hello world 2", RowValue.get(0));

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    if (projection != null) {
      reader.setProjection(projection);
    }
    int totalRows = 0;
    TableScanner scanner = reader.getScanner(null, true);
    for (; !scanner.atEnd(); scanner.advance()) {
      ++totalRows;
    }
    scanner.close();
    return totalRows;
  }

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    scanner.getValue(RowValue);
    System.out.println("rowvalue size:"+RowValue.size());
    System.out.println("read a : " + RowValue.get(0).toString());
    System.out.println("read string: " + RowValue.get(1).toString());
  
    scanner.advance();
    if(!scanner.atEnd()) {
      scanner.getValue(RowValue);
      System.out.println("read float in 2nd row: "+ RowValue.get(1).toString());
      System.out.println("done insert table");
    }

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    scanner.getValue(RowValue);
    System.out.println("rowvalue size:"+RowValue.size());
    System.out.println("read a : " + RowValue.get(7).toString());
    System.out.println("read string: " + RowValue.get(6).toString());
   
    scanner.advance();
    if(!scanner.atEnd()) {
      scanner.getValue(RowValue);
      System.out.println("read float in 2nd row: "+ RowValue.get(6).toString());
      System.out.println("done insert table");
    }

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    scanner.getValue(RowValue);
    Assert.assertEquals(false, RowValue.isNull());
    Assert.assertEquals(null, RowValue.get(0));
    Assert.assertEquals(1, RowValue.size());


    scanner.advance();
    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(false, RowValue.isNull());
    Assert.assertEquals(null, RowValue.get(0));

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    scanner.getValue(RowValue);
    Assert.assertEquals(1, RowValue.get(0));
    Long expected = 1001L;
    Assert.assertEquals(expected, RowValue.get(1));


    scanner.advance();
    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(2, RowValue.get(0));
    expected = 1002L;

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    scanner.getValue(RowValue);
    Assert.assertEquals(1, ((Map) (RowValue.get(0))).get("a"));
    Assert.assertEquals(2, ((Map) RowValue.get(0)).get("b"));
    Assert.assertEquals(1.3F, ((Map<String, Float>) RowValue.get(1)).get("x"));


    scanner.advance();
    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(null, ((Map) RowValue.get(0)).get("a"));
    Assert.assertEquals(null, ((Map) RowValue.get(0)).get("b"));

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    Assert.assertEquals(key, new BytesWritable("k11".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(1, RowValue.get(0));
    Assert.assertEquals(1.3F, ((Map<String, Float>) RowValue.get(1)).get("x"));


    scanner.advance();


    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(2, RowValue.get(0));

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    tmp = 2;
    Assert.assertEquals(tmp, f4.get("b"));
    tmp = 3;
    Assert.assertEquals(tmp, f4.get("c"));


    scanner.advance();


    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);
    Assert.assertEquals(2, ((Tuple) RowValue.get(0)).get(0));

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    Assert.assertEquals(tmp, f4.get("b"));
    tmp = 3;
    Assert.assertEquals(tmp, f4.get("c"));
    Assert.assertEquals(null, f4.get("x"));


    scanner.advance();


    scanner.getKey(key);
    Assert.assertEquals(key, new BytesWritable("k12".getBytes()));
    scanner.getValue(RowValue);

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