Package org.apache.accumulo.core.iterators

Examples of org.apache.accumulo.core.iterators.SortedMapIterator

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  public void testSetInterrupt() throws Exception {

    TreeMap<Key,Value> tm1 = new TreeMap<Key,Value>();
    put(tm1, "r1", "cf1", "cq1", 5, "v1");

    SortedMapIterator smi = new SortedMapIterator(tm1);
    TestDataSource tds = new TestDataSource(smi);
    SourceSwitchingIterator ssi = new SourceSwitchingIterator(tds, false);

    AtomicBoolean flag = new AtomicBoolean();
    ssi.setInterruptFlag(flag);
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  }
 
  private synchronized static SortedKeyValueIterator<Key,Value> createIteratorStack(int numRows, int numDocsPerRow, Text[] columnFamilies,
      Text[] otherColumnFamilies, HashSet<Text> docs, Text[] negatedColumns) throws IOException {
    TreeMap<Key,Value> inMemoryMap = createSortedMap(numRows, numDocsPerRow, columnFamilies, otherColumnFamilies, docs, negatedColumns);
    return new SortedMapIterator(inMemoryMap);
  }
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    public synchronized InterruptibleIterator skvIterator() {
      if (map == null)
        throw new IllegalStateException();
     
      return new SortedMapIterator(map);
    }
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    put(tm1, "2;m", Constants.METADATA_BULKFILE_COLUMN_FAMILY, "/t1/file5", "8");
    put(tm1, "2<", Constants.METADATA_BULKFILE_COLUMN_FAMILY, "/t2/file9", "8");
    put(tm1, "2<", Constants.METADATA_BULKFILE_COLUMN_FAMILY, "/t2/fileA", "2");
   
    TestMetadataBulkLoadFilter iter = new TestMetadataBulkLoadFilter();
    iter.init(new SortedMapIterator(tm1), new HashMap<String,String>(), new IteratorEnvironment() {
     
      @Override
      public SortedKeyValueIterator<Key,Value> reserveMapFileReader(String mapFileName) throws IOException {
        // TODO Auto-generated method stub
        return null;
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    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, SummingCombiner.Type.VARLEN);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("2")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("4", encoder.decode(ai.getTopValue().get()).toString());
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    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, VarLenEncoder.class);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("cf001")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("9", encoder.decode(ai.getTopValue().get()).toString());
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    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, FixedLenEncoder.class.getName());
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("cf001")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("9", encoder.decode(ai.getTopValue().get()).toString());
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    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, FixedLenEncoder.class.getName());
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("cf001")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
   
    SortedKeyValueIterator<Key,Value> ai2 = ai.deepCopy(null);
    SortedKeyValueIterator<Key,Value> ai3 = ai.deepCopy(null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
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    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, SummingCombiner.Type.STRING);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("cf001")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(0, 0, 1, 1), ai.getTopKey());
    assertEquals("7", encoder.decode(ai.getTopValue().get()).toString());
   
    ai.next();
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("9", encoder.decode(ai.getTopValue().get()).toString());
   
    ai.next();
   
    assertTrue(ai.hasTop());
    assertEquals(nk(2, 2, 1, 2), ai.getTopKey());
    assertEquals("3", encoder.decode(ai.getTopValue().get()).toString());
   
    ai.next();
   
    assertTrue(ai.hasTop());
    assertEquals(nk(2, 2, 1, 1), ai.getTopKey());
    assertEquals("2", encoder.decode(ai.getTopValue().get()).toString());
   
    ai.next();
   
    assertFalse(ai.hasTop());
   
    // seek test
    ai.seek(nr(0, 0, 1, 0), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("9", encoder.decode(ai.getTopValue().get()).toString());
   
    ai.next();
   
    assertTrue(ai.hasTop());
    assertEquals(nk(2, 2, 1, 2), ai.getTopKey());
    assertEquals("3", encoder.decode(ai.getTopValue().get()).toString());
   
    // seek after key that aggregates
    ai.seek(nr(1, 1, 1, 2), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(2, 2, 1, 2), ai.getTopKey());
    assertEquals("3", encoder.decode(ai.getTopValue().get()).toString());
   
    // combine all columns
   
    is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, SummingCombiner.Type.STRING);
    Combiner.setCombineAllColumns(is, true);
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(0, 0, 1, 1), ai.getTopKey());
    assertEquals("7", encoder.decode(ai.getTopValue().get()).toString());
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    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, StringEncoder.class);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("cf001")));
   
    List<SortedKeyValueIterator<Key,Value>> sources = new ArrayList<SortedKeyValueIterator<Key,Value>>(3);
    sources.add(new SortedMapIterator(tm1));
    sources.add(new SortedMapIterator(tm2));
    sources.add(new SortedMapIterator(tm3));
   
    MultiIterator mi = new MultiIterator(sources, true);
    ai.init(mi, is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
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Related Classes of org.apache.accumulo.core.iterators.SortedMapIterator

  • org.apache.accumulo.core.client.mock.MockBatchScanner
  • org.apache.accumulo.core.client.mock.MockScanner
  • org.apache.accumulo.core.data.Key
  • org.apache.accumulo.core.data.Range
  • org.apache.accumulo.core.iterators.AggregatingIteratorTest
  • org.apache.accumulo.core.iterators.ColumnFamilySkippingIteratorTest
  • org.apache.accumulo.core.iterators.DeletingIteratorTest
  • org.apache.accumulo.core.iterators.FilteringIteratorTest
  • org.apache.accumulo.core.iterators.IntersectingIteratorTest
  • org.apache.accumulo.core.iterators.IterUtilTest
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