Package org.apache.hadoop.hbase.KeyValue

Examples of org.apache.hadoop.hbase.KeyValue.KVComparator

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                        .withCompression(compressAlgo)
                        .build();
   
    HFileBlock.FSReader blockReader = new HFileBlock.FSReaderImpl(fsdis, fileSize, meta);
    // Comparator class name is stored in the trailer in version 2.
    KVComparator comparator = trailer.createComparator();
    HFileBlockIndex.BlockIndexReader dataBlockIndexReader =
        new HFileBlockIndex.BlockIndexReader(comparator,
            trailer.getNumDataIndexLevels());
    HFileBlockIndex.BlockIndexReader metaBlockIndexReader =
        new HFileBlockIndex.BlockIndexReader(
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                        .withIncludesTags(useTags)
                        .withHBaseCheckSum(true).build();
    HFileBlock.FSReader blockReader =
        new HFileBlock.FSReaderImpl(fsdis, fileSize, meta);
// Comparator class name is stored in the trailer in version 2.
    KVComparator comparator = trailer.createComparator();
    HFileBlockIndex.BlockIndexReader dataBlockIndexReader =
        new HFileBlockIndex.BlockIndexReader(comparator,
            trailer.getNumDataIndexLevels());
    HFileBlockIndex.BlockIndexReader metaBlockIndexReader =
        new HFileBlockIndex.BlockIndexReader(
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  }

  public void setComparatorClass(Class<? extends KVComparator> klass) {
    // Is the comparator instantiable?
    try {
      KVComparator comp = klass.newInstance();

      // HFile V2 legacy comparator class names.
      if (KeyValue.COMPARATOR.getClass().equals(klass)) {
        comparatorClassName = KeyValue.COMPARATOR.getLegacyKeyComparatorName();
      } else if (KeyValue.META_COMPARATOR.getClass().equals(klass)) {
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  public void testMoreComparisons() throws Exception {
    // Root compares
    long now = System.currentTimeMillis();
    KeyValue a = new KeyValue(Bytes.toBytes(".META.,,99999999999999"), now);
    KeyValue b = new KeyValue(Bytes.toBytes(".META.,,1"), now);
    KVComparator c = new KeyValue.RootComparator();
    assertTrue(c.compare(b, a) < 0);
    KeyValue aa = new KeyValue(Bytes.toBytes(".META.,,1"), now);
    KeyValue bb = new KeyValue(Bytes.toBytes(".META.,,1"),
        Bytes.toBytes("info"), Bytes.toBytes("regioninfo"), 1235943454602L,
        (byte[])null);
    assertTrue(c.compare(aa, bb) < 0);

    // Meta compares
    KeyValue aaa = new KeyValue(
        Bytes.toBytes("TestScanMultipleVersions,row_0500,1236020145502"), now);
    KeyValue bbb = new KeyValue(
        Bytes.toBytes("TestScanMultipleVersions,,99999999999999"), now);
    c = new KeyValue.MetaComparator();
    assertTrue(c.compare(bbb, aaa) < 0);

    KeyValue aaaa = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,,1236023996656"),
        Bytes.toBytes("info"), Bytes.toBytes("regioninfo"), 1236024396271L,
        (byte[])null);
    assertTrue(c.compare(aaaa, bbb) < 0);

    KeyValue x = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,row_0500,1236034574162"),
        Bytes.toBytes("info"), Bytes.toBytes(""), 9223372036854775807L,
        (byte[])null);
    KeyValue y = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,row_0500,1236034574162"),
        Bytes.toBytes("info"), Bytes.toBytes("regioninfo"), 1236034574912L,
        (byte[])null);
    assertTrue(c.compare(x, y) < 0);
    comparisons(new KeyValue.MetaComparator());
    comparisons(new KeyValue.KVComparator());
    metacomparisons(new KeyValue.RootComparator());
    metacomparisons(new KeyValue.MetaComparator());
  }
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    cmp = c.compare(greater,less);
    assertTrue(cmp > 0);
  }

  public void testCompareWithoutRow() {
    final KVComparator c = KeyValue.COMPARATOR;
    byte[] row = Bytes.toBytes("row");
    byte[] fami0 = Bytes.toBytes("fami");
    byte[] fami1 = Bytes.toBytes("fami1");
    byte[] fami2 = Bytes.toBytes("fami2");
    byte[] qual0 = Bytes.toBytes("");
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    // 'fami:qf1' < 'fami1:'
    assertKVLess(c, kv0_1, kv1_0);
  }

  public void testFirstLastOnRow() {
    final KVComparator c = KeyValue.COMPARATOR;
    long ts = 1;

    // These are listed in sort order (ie: every one should be less
    // than the one on the next line).
    final KeyValue firstOnRowA = KeyValue.createFirstOnRow(rowA);
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    }

    @Override
    public int compare(final Cell l, final Cell ignored) {
      assert ignored == null;
      KVComparator comparator = kvBuilder.getKeyValueComparator();
      // row
      int val = comparator.compareRows(l.getRowArray(), l.getRowOffset(),
        l.getRowLength(), row, rowOff, rowLen);
      if (val != 0) {
        return val;
      }
      // family
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  public void testMoreComparisons() throws Exception {
    // Root compares
    long now = System.currentTimeMillis();
    KeyValue a = new KeyValue(Bytes.toBytes(".META.,,99999999999999"), now);
    KeyValue b = new KeyValue(Bytes.toBytes(".META.,,1"), now);
    KVComparator c = new KeyValue.RootComparator();
    assertTrue(c.compare(b, a) < 0);
    KeyValue aa = new KeyValue(Bytes.toBytes(".META.,,1"), now);
    KeyValue bb = new KeyValue(Bytes.toBytes(".META.,,1"),
        Bytes.toBytes("info"), Bytes.toBytes("regioninfo"), 1235943454602L,
        (byte[])null);
    assertTrue(c.compare(aa, bb) < 0);

    // Meta compares
    KeyValue aaa = new KeyValue(
        Bytes.toBytes("TestScanMultipleVersions,row_0500,1236020145502"), now);
    KeyValue bbb = new KeyValue(
        Bytes.toBytes("TestScanMultipleVersions,,99999999999999"), now);
    c = new KeyValue.MetaComparator();
    assertTrue(c.compare(bbb, aaa) < 0);

    KeyValue aaaa = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,,1236023996656"),
        Bytes.toBytes("info"), Bytes.toBytes("regioninfo"), 1236024396271L,
        (byte[])null);
    assertTrue(c.compare(aaaa, bbb) < 0);

    KeyValue x = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,row_0500,1236034574162"),
        Bytes.toBytes("info"), Bytes.toBytes(""), 9223372036854775807L,
        (byte[])null);
    KeyValue y = new KeyValue(Bytes.toBytes("TestScanMultipleVersions,row_0500,1236034574162"),
        Bytes.toBytes("info"), Bytes.toBytes("regioninfo"), 1236034574912L,
        (byte[])null);
    assertTrue(c.compare(x, y) < 0);
    comparisons(new KeyValue.MetaComparator());
    comparisons(new KeyValue.KVComparator());
    metacomparisons(new KeyValue.RootComparator());
    metacomparisons(new KeyValue.MetaComparator());
  }
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    cmp = c.compare(greater,less);
    assertTrue(cmp > 0);
  }

  public void testFirstLastOnRow() {
    final KVComparator c = KeyValue.COMPARATOR;
    long ts = 1;

    // These are listed in sort order (ie: every one should be less
    // than the one on the next line).
    final KeyValue firstOnRowA = KeyValue.createFirstOnRow(rowA);
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                        .withCompression(compressAlgo)
                        .build();
   
    HFileBlock.FSReader blockReader = new HFileBlock.FSReaderV2(fsdis, fileSize, meta);
    // Comparator class name is stored in the trailer in version 2.
    KVComparator comparator = trailer.createComparator();
    HFileBlockIndex.BlockIndexReader dataBlockIndexReader =
        new HFileBlockIndex.BlockIndexReader(comparator,
            trailer.getNumDataIndexLevels());
    HFileBlockIndex.BlockIndexReader metaBlockIndexReader =
        new HFileBlockIndex.BlockIndexReader(
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