Examples of SliceRange

org.apache.cassandra.thrift.SliceRange
A slice range is a structure that stores basic range, ordering and limit information for a query that will return multiple columns. It could be thought of as Cassandra's version of LIMIT and ORDER BY @param start. The column name to start the slice with. This attribute is not required, though there is no default value,and can be safely set to '', i.e., an empty byte array, to start with the first column name. Otherwise, it must a valid value under the rules of the Comparator defined for the given ColumnFamily. @param finish. The column name to stop the slice at. This attribute is not required, though there is no default value,and can be safely set to an empty byte array to not stop until 'count' results are seen. Otherwise, it must also be a valid value to the ColumnFamily Comparator. @param reversed. Whether the results should be ordered in reversed order. Similar to ORDER BY blah DESC in SQL. @param count. How many columns to return. Similar to LIMIT in SQL. May be arbitrarily large, but Thrift willmaterialize the whole result into memory before returning it to the client, so be aware that you may be better served by iterating through slices by passing the last value of one call in as the 'start' of the next instead of increasing 'count' arbitrarily large.

Examples of org.apache.cassandra.thrift.SliceRange

    }


    // get value
    ColumnParent clp = new ColumnParent("Standard1");
    SlicePredicate slicePredicate = new SlicePredicate();
    SliceRange sr = new SliceRange(ByteBuffer.wrap(new byte[0]), ByteBuffer.wrap(new byte[0]), false, 150);
    slicePredicate.setSlice_range(sr);
    Map<ByteBuffer,Integer> counts = keyspace.multigetCount(keys, clp, slicePredicate);
    assertEquals(5,counts.size());
    assertEquals(new Integer(25),counts.entrySet().iterator().next().getValue());


    slicePredicate.setSlice_range(new SliceRange(StringSerializer.get().toByteBuffer(""), 
        StringSerializer.get().toByteBuffer(""), false, 5));
    counts = keyspace.multigetCount(keys, clp, slicePredicate);


    assertEquals(5,counts.size());
    assertEquals(new Integer(5),counts.entrySet().iterator().next().getValue());

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Examples of org.apache.cassandra.thrift.SliceRange

    ConcreteSliceQueury<String, String, String, Rows<String, String, String>> q =
      new ConcreteSliceQueury<String, String, String, Rows<String, String,String>>(ko, se, se, se);
    q.setRange("1", "100", false, 10);
    SlicePredicate p = q.getPredicate();
    assertNull(p.getColumn_names());
    SliceRange range = p.getSlice_range();
    assertNotNull(range);
    assertArrayEquals(bytes("1"), range.getStart());
    assertArrayEquals(bytes("100"), range.getFinish());
    assertEquals(10, range.getCount());
  }

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Examples of org.apache.cassandra.thrift.SliceRange


  @Override
  public SuperColumn getSuperColumn(final ByteBuffer key, final ColumnPath columnPath,
      final boolean reversed, final int size) throws HectorException {
    //valideSuperColumnPath(columnPath);
    final SliceRange sliceRange = new SliceRange(ByteBuffer.wrap(new byte[0]),
        ByteBuffer.wrap(new byte[0]), reversed, size);
    Operation<SuperColumn> op = new Operation<SuperColumn>(OperationType.READ, failoverPolicy,
        keyspaceName, credentials) {


      @Override

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Examples of org.apache.cassandra.thrift.SliceRange


    // only can get supercolumn by multigetSuperSlice
    ColumnParent clp = new ColumnParent(columnPath.getColumn_family());
    clp.setSuper_column(columnPath.getSuper_column());


    SliceRange sr = new SliceRange(ByteBuffer.wrap(new byte[0]), ByteBuffer.wrap(new byte[0]), reversed, size);
    SlicePredicate sp = new SlicePredicate();
    sp.setSlice_range(sr);


    Map<ByteBuffer, List<SuperColumn>> sclist = multigetSuperSlice(keys, clp, sp);

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Examples of org.apache.cassandra.thrift.SliceRange

      }
      pred.setColumn_names(toThriftColumnNames(columnNames));
      break;
    case Range:
      Assert.isTrue(countSet, "Count was not set, neither were column-names set, can't execute");
      SliceRange range = new SliceRange(findBytes(start), findBytes(finish), reversed, count);
      pred.setSlice_range(range);
      break;
    case Unknown:
    default:
      throw new HectorException(

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Examples of org.apache.cassandra.thrift.SliceRange

            final SortedSet<ByteBuffer> columnNameSet = new TreeSet<ByteBuffer>(comparator);
            columnNameSet.addAll(predicate.column_names);
            return new NamesQueryFilter(columnNameSet);
        }


        SliceRange range = predicate.slice_range;
        return new SliceQueryFilter(range.start, range.finish, range.reversed, range.count);
    }

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Examples of org.apache.cassandra.thrift.SliceRange

        {
            throw new IOException("Expected 'cassandra://<keyspace>/<columnfamily>': " + e.getMessage());
        }


        // and configure
        SliceRange range = new SliceRange(BOUND, BOUND, false, LIMIT);
        SlicePredicate predicate = new SlicePredicate().setSlice_range(range);
        conf = job.getConfiguration();
        ConfigHelper.setInputSlicePredicate(conf, predicate);
        ConfigHelper.setInputColumnFamily(conf, ksname, cfname);

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Examples of org.apache.cassandra.thrift.SliceRange

        ByteBuffer startCol = ByteBuffer.wrap("Start".getBytes());
        ByteBuffer stopCol = ByteBuffer.wrap("Stop".getBytes());
        ByteBuffer emptyCol = ByteBuffer.wrap("".getBytes());
        SlicePredicate namesPred = new SlicePredicate();
        namesPred.column_names = Statics.NamedCols;
        SliceRange emptySliceRange = new SliceRange(emptyCol, emptyCol, false, 100); 
        SliceRange nonEmptySliceRange = new SliceRange(startCol, stopCol, true, 100);
        SlicePredicate emptyRangePred = new SlicePredicate();
        emptyRangePred.slice_range = emptySliceRange;
        SlicePredicate nonEmptyRangePred = new SlicePredicate();
        nonEmptyRangePred.slice_range = nonEmptySliceRange;
        IPartitioner part = StorageService.getPartitioner();

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Examples of org.apache.cassandra.thrift.SliceRange

                new Column(getBytes(5), ByteBufferUtil.bytes("val5"), 1),
                new Column(getBytes(6), ByteBufferUtil.bytes("val6"), 1));
        
        // verify insert.
        final SlicePredicate sp = new SlicePredicate();
        sp.setSlice_range(new SliceRange());
        sp.getSlice_range().setCount(100);
        sp.getSlice_range().setStart(ArrayUtils.EMPTY_BYTE_ARRAY);
        sp.getSlice_range().setFinish(ArrayUtils.EMPTY_BYTE_ARRAY);
        
        assertRowAndColCount(1, 6, scfName, false, cfs.getRangeSlice(scfName, Util.range("f", "g"), 100, QueryFilter.getFilter(sp, cfs.getComparator())));

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Examples of org.apache.cassandra.thrift.SliceRange

        Table table = Table.open(tableName);
        ColumnFamilyStore cfs = table.getColumnFamilyStore(cfName);
        DecoratedKey key = Util.dk("f-flush-resurrection");
        
        SlicePredicate sp = new SlicePredicate();
        sp.setSlice_range(new SliceRange());
        sp.getSlice_range().setCount(100);
        sp.getSlice_range().setStart(ArrayUtils.EMPTY_BYTE_ARRAY);
        sp.getSlice_range().setFinish(ArrayUtils.EMPTY_BYTE_ARRAY);
        
        // insert

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