Examples of org.apache.hadoop.hbase.client.Result

org.apache.hadoop.hbase.client.Result
Single row result of a {@link Get} or {@link Scan} query.
This class is NOT THREAD SAFE.
Convenience methods are available that return various {@link Map}structures and values directly.
To get a complete mapping of all cells in the Result, which can include multiple families and multiple versions, use {@link #getMap()}.
To get a mapping of each family to its columns (qualifiers and values), including only the latest version of each, use {@link #getNoVersionMap()}. To get a mapping of qualifiers to latest values for an individual family use {@link #getFamilyMap(byte[])}.
To get the latest value for a specific family and qualifier use {@link #getValue(byte[],byte[])}. A Result is backed by an array of {@link KeyValue} objects, each representingan HBase cell defined by the row, family, qualifier, timestamp, and value.
The underlying {@link KeyValue} objects can be accessed through the method {@link #listCells()}. Each KeyValue can then be accessed through {@link KeyValue#getRow()}, {@link KeyValue#getFamily()}, {@link KeyValue#getQualifier()}, {@link KeyValue#getTimestamp()}, and {@link KeyValue#getValue()}.
If you need to overwrite a Result with another Result instance -- as in the old 'mapred' RecordReader next invocations -- then create an empty Result with the null constructor and in then use {@link #copyFrom(Result)}

      put.add(fam, qual, HConstants.LATEST_TIMESTAMP, Bytes.toBytes("value"));
      region.put(put);


      // Make sure it shows up with an actual timestamp
      Get get = new Get(row).addColumn(fam, qual);
      Result result = region.get(get);
      assertEquals(1, result.size());
      Cell kv = result.rawCells()[0];
      LOG.info("Got: " + kv);
      assertTrue("LATEST_TIMESTAMP was not replaced with real timestamp",
          kv.getTimestamp() != HConstants.LATEST_TIMESTAMP);


      // Check same with WAL enabled (historically these took different
      // code paths, so check both)
      row = Bytes.toBytes("row2");
      put = new Put(row);
      put.add(fam, qual, HConstants.LATEST_TIMESTAMP, Bytes.toBytes("value"));
      region.put(put);


      // Make sure it shows up with an actual timestamp
      get = new Get(row).addColumn(fam, qual);
      result = region.get(get);
      assertEquals(1, result.size());
      kv = result.rawCells()[0];
      LOG.info("Got: " + kv);
      assertTrue("LATEST_TIMESTAMP was not replaced with real timestamp",
          kv.getTimestamp() != HConstants.LATEST_TIMESTAMP);
    } finally {
      HRegion.closeHRegion(this.region);

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      // ok get:
      Get get = new Get(row);
      get.addColumn(fam1, qual1);


      Result r = region.get(get);
      assertEquals(1, r.size());
      assertArrayEquals(value2, r.getValue(fam1, qual1));


      // next:
      Scan scan = new Scan(row);
      scan.addColumn(fam1, qual1);
      InternalScanner s = region.getScanner(scan);

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      KeyValue kv1 = new KeyValue(row1, fam1, col2);
      KeyValue kv2 = new KeyValue(row1, fam1, col4);
      KeyValue[] expected = { kv1, kv2 };


      // Test
      Result res = region.get(get);
      assertEquals(expected.length, res.size());
      for (int i = 0; i < res.size(); i++) {
        assertTrue(CellUtil.matchingRow(expected[i], res.rawCells()[i]));
        assertTrue(CellUtil.matchingFamily(expected[i], res.rawCells()[i]));
        assertTrue(CellUtil.matchingQualifier(expected[i], res.rawCells()[i]));
      }


      // Test using a filter on a Get
      Get g = new Get(row1);
      final int count = 2;
      g.setFilter(new ColumnCountGetFilter(count));
      res = region.get(g);
      assertEquals(count, res.size());
    } finally {
      HRegion.closeHRegion(this.region);
      this.region = null;
    }
  }

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    String method = this.getName();
    this.region = initHRegion(tableName, method, conf, fam);
    try {
      Get get = new Get(row);
      get.addFamily(fam);
      Result r = region.get(get);


      assertTrue(r.isEmpty());
    } finally {
      HRegion.closeHRegion(this.region);
      this.region = null;
    }
  }

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  private void assertICV(byte[] row, byte[] familiy, byte[] qualifier, int amount)
      throws IOException {
    // run a get and see?
    Get get = new Get(row);
    get.addColumn(familiy, qualifier);
    Result result = region.get(get);
    assertEquals(1, result.size());


    Cell kv = result.rawCells()[0];
    int r = Bytes.toInt(CellUtil.cloneValue(kv));
    assertEquals(amount, r);
  }

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        }
      });
      ctx.startThreads();


      Get get = new Get(Bytes.toBytes("row0"));
      Result result = null;


      int expectedCount = numFamilies * numQualifiers;


      long prevTimestamp = 0L;
      for (int i = 0; i < testCount; i++) {


        boolean previousEmpty = result == null || result.isEmpty();
        result = region.get(get);
        if (!result.isEmpty() || !previousEmpty || i > compactInterval) {
          assertEquals("i=" + i, expectedCount, result.size());
          // TODO this was removed, now what dangit?!
          // search looking for the qualifier in question?
          long timestamp = 0;
          for (Cell kv : result.rawCells()) {
            if (CellUtil.matchingFamily(kv, families[0])
                && CellUtil.matchingQualifier(kv, qualifiers[0])) {
              timestamp = kv.getTimestamp();
            }
          }
          assertTrue(timestamp >= prevTimestamp);
          prevTimestamp = timestamp;
          Cell previousKV = null;


          for (Cell kv : result.rawCells()) {
            byte[] thisValue = CellUtil.cloneValue(kv);
            if (previousKV != null) {
              if (Bytes.compareTo(CellUtil.cloneValue(previousKV), thisValue) != 0) {
                LOG.warn("These two KV should have the same value." + " Previous KV:" + previousKV
                    + "(memStoreTS:" + previousKV.getMvccVersion() + ")" + ", New KV: " + kv

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    flushThread.join();


    Get get = new Get(Incrementer.incRow);
    get.addColumn(Incrementer.family, Incrementer.qualifier);
    get.setMaxVersions(1);
    Result res = this.region.get(get);
    List<Cell> kvs = res.getColumnCells(Incrementer.family, Incrementer.qualifier);


    // we just got the latest version
    assertEquals(kvs.size(), 1);
    Cell kv = kvs.get(0);
    assertEquals(expected, Bytes.toLong(kv.getValueArray(), kv.getValueOffset()));

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    flushThread.join();


    Get get = new Get(Appender.appendRow);
    get.addColumn(Appender.family, Appender.qualifier);
    get.setMaxVersions(1);
    Result res = this.region.get(get);
    List<Cell> kvs = res.getColumnCells(Appender.family, Appender.qualifier);


    // we just got the latest version
    assertEquals(kvs.size(), 1);
    Cell kv = kvs.get(0);
    byte[] appendResult = new byte[kv.getValueLength()];

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    byte[] value = null;
    this.region = initHRegion(tableName, method, conf, family);
    Put put = null;
    Get get = null;
    List<Cell> kvs = null;
    Result res = null;


    put = new Put(row);
    value = Bytes.toBytes("value0");
    put.add(family, qualifier, 1234567l, value);
    region.put(put);
    get = new Get(row);
    get.addColumn(family, qualifier);
    get.setMaxVersions();
    res = this.region.get(get);
    kvs = res.getColumnCells(family, qualifier);
    assertEquals(1, kvs.size());
    assertArrayEquals(Bytes.toBytes("value0"), CellUtil.cloneValue(kvs.get(0)));


    region.flushcache();
    get = new Get(row);
    get.addColumn(family, qualifier);
    get.setMaxVersions();
    res = this.region.get(get);
    kvs = res.getColumnCells(family, qualifier);
    assertEquals(1, kvs.size());
    assertArrayEquals(Bytes.toBytes("value0"), CellUtil.cloneValue(kvs.get(0)));


    put = new Put(row);
    value = Bytes.toBytes("value1");
    put.add(family, qualifier, 1234567l, value);
    region.put(put);
    get = new Get(row);
    get.addColumn(family, qualifier);
    get.setMaxVersions();
    res = this.region.get(get);
    kvs = res.getColumnCells(family, qualifier);
    assertEquals(1, kvs.size());
    assertArrayEquals(Bytes.toBytes("value1"), CellUtil.cloneValue(kvs.get(0)));


    region.flushcache();
    get = new Get(row);
    get.addColumn(family, qualifier);
    get.setMaxVersions();
    res = this.region.get(get);
    kvs = res.getColumnCells(family, qualifier);
    assertEquals(1, kvs.size());
    assertArrayEquals(Bytes.toBytes("value1"), CellUtil.cloneValue(kvs.get(0)));
  }

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      byte[] row = Bytes.toBytes("" + i);
      Get get = new Get(row);
      for (byte[] family : families) {
        get.addColumn(family, qf);
      }
      Result result = newReg.get(get);
      Cell[] raw = result.rawCells();
      assertEquals(families.length, result.size());
      for (int j = 0; j < families.length; j++) {
        assertTrue(CellUtil.matchingRow(raw[j], row));
        assertTrue(CellUtil.matchingFamily(raw[j], families[j]));
        assertTrue(CellUtil.matchingQualifier(raw[j], qf));
      }

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