Examples of org.apache.cassandra.thrift.SlicePredicate$SlicePredicateTupleScheme

org.apache.cassandra.thrift.SlicePredicate
kipedia.org/wiki/Predicate_(mathematical_logic)), which is described as "a property that the elements of a set have in common." SlicePredicate's in Cassandra are described with either a list of column_names or a SliceRange. If column_names is specified, slice_range is ignored. @param column_name. A list of column names to retrieve. This can be used similar to Memcached's "multi-get" featureto fetch N known column names. For instance, if you know you wish to fetch columns 'Joe', 'Jack', and 'Jim' you can pass those column names as a list to fetch all three at once. @param slice_range. A SliceRange describing how to range, order, and/or limit the slice.

        return 1 + ThreadLocalRandom.current().nextInt(state.settings.columns.maxColumnsPerKey - count);
    }


    protected SlicePredicate slicePredicate()
    {
        final SlicePredicate predicate = new SlicePredicate();
        if (state.settings.columns.slice)
        {
            int count = state.rowGen.count(index);
            int start = sliceStart(count);
            predicate.setSlice_range(new SliceRange()
                                     .setStart(state.settings.columns.names.get(start))
                                     .setFinish(new byte[] {})
                                     .setReversed(false)
                                     .setCount(count)
            );
        }
        else
            predicate.setColumn_names(randomNames());
        return predicate;
    }

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                new BufferCell(cellname(4L), ByteBufferUtil.bytes("val4"), 1),
                new BufferCell(cellname(5L), ByteBufferUtil.bytes("val5"), 1),
                new BufferCell(cellname(6L), 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, false, cfs.getRangeSlice(Util.range("f", "g"), null, ThriftValidation.asIFilter(sp, cfs.metadata, scfName), 100));


        // delete
        Mutation rm = new Mutation(keyspace.getName(), key.getKey());

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        String cfName = "Standard1";
        Keyspace keyspace = Keyspace.open(keyspaceName);
        ColumnFamilyStore cfs = keyspace.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
        putColsStandard(cfs, key, column("col1", "val1", 1), column("col2", "val2", 1));
        assertRowAndColCount(1, 2, false, cfs.getRangeSlice(Util.range("f", "g"), null, ThriftValidation.asIFilter(sp, cfs.metadata, null), 100));

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        putColsStandard(cfs, Util.dk("a"), cols[0], cols[1], cols[2], cols[3], cols[4]);
        putColsStandard(cfs, Util.dk("b"), cols[0], cols[1]);
        putColsStandard(cfs, Util.dk("c"), cols[0], cols[1], cols[2], cols[3]);
        cfs.forceBlockingFlush();


        SlicePredicate sp = new SlicePredicate();
        sp.setSlice_range(new SliceRange());
        sp.getSlice_range().setCount(1);
        sp.getSlice_range().setStart(ArrayUtils.EMPTY_BYTE_ARRAY);
        sp.getSlice_range().setFinish(ArrayUtils.EMPTY_BYTE_ARRAY);


        assertTotalColCount(cfs.getRangeSlice(Util.range("", ""),
                                              null,
                                              ThriftValidation.asIFilter(sp, cfs.metadata, null),
                                              3,
                                              System.currentTimeMillis(),
                                              true,
                                              false),
                            3);
        assertTotalColCount(cfs.getRangeSlice(Util.range("", ""),
                                              null,
                                              ThriftValidation.asIFilter(sp, cfs.metadata, null),
                                              5,
                                              System.currentTimeMillis(),
                                              true,
                                              false),
                            5);
        assertTotalColCount(cfs.getRangeSlice(Util.range("", ""),
                                              null,
                                              ThriftValidation.asIFilter(sp, cfs.metadata, null),
                                              8,
                                              System.currentTimeMillis(),
                                              true,
                                              false),
                            8);
        assertTotalColCount(cfs.getRangeSlice(Util.range("", ""),
                                              null,
                                              ThriftValidation.asIFilter(sp, cfs.metadata, null),
                                              10,
                                              System.currentTimeMillis(),
                                              true,
                                              false),
                            10);
        assertTotalColCount(cfs.getRangeSlice(Util.range("", ""),
                                              null,
                                              ThriftValidation.asIFilter(sp, cfs.metadata, null),
                                              100,
                                              System.currentTimeMillis(),
                                              true,
                                              false),
                            11);


        // Check that when querying by name, we always include all names for a
        // gien row even if it means returning more columns than requested (this is necesseray for CQL)
        sp = new SlicePredicate();
        sp.setColumn_names(Arrays.asList(
            ByteBufferUtil.bytes("c0"),
            ByteBufferUtil.bytes("c1"),
            ByteBufferUtil.bytes("c2")
        ));

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        putColsStandard(cfs, ka, cols[0], cols[1], cols[2], cols[3]);
        putColsStandard(cfs, kb, cols[0], cols[1], cols[2]);
        putColsStandard(cfs, kc, cols[0], cols[1], cols[2], cols[3]);
        cfs.forceBlockingFlush();


        SlicePredicate sp = new SlicePredicate();
        sp.setSlice_range(new SliceRange());
        sp.getSlice_range().setCount(1);
        sp.getSlice_range().setStart(ArrayUtils.EMPTY_BYTE_ARRAY);
        sp.getSlice_range().setFinish(ArrayUtils.EMPTY_BYTE_ARRAY);


        Collection<Row> rows;
        Row row, row1, row2;
        IDiskAtomFilter filter = ThriftValidation.asIFilter(sp, cfs.metadata, null);


        rows = cfs.getRangeSlice(cfs.makeExtendedFilter(Util.range("", ""), filter, null, 3, true, true, System.currentTimeMillis()));
        assert rows.size() == 1 : "Expected 1 row, got " + toString(rows);
        row = rows.iterator().next();
        assertColumnNames(row, "c0", "c1", "c2");


        sp.getSlice_range().setStart(ByteBufferUtil.getArray(ByteBufferUtil.bytes("c2")));
        filter = ThriftValidation.asIFilter(sp, cfs.metadata, null);
        rows = cfs.getRangeSlice(cfs.makeExtendedFilter(new Bounds<RowPosition>(ka, min), filter, null, 3, true, true, System.currentTimeMillis()));
        assert rows.size() == 2 : "Expected 2 rows, got " + toString(rows);
        Iterator<Row> iter = rows.iterator();
        row1 = iter.next();
        row2 = iter.next();
        assertColumnNames(row1, "c2", "c3");
        assertColumnNames(row2, "c0");


        sp.getSlice_range().setStart(ByteBufferUtil.getArray(ByteBufferUtil.bytes("c0")));
        filter = ThriftValidation.asIFilter(sp, cfs.metadata, null);
        rows = cfs.getRangeSlice(cfs.makeExtendedFilter(new Bounds<RowPosition>(row2.key, min), filter, null, 3, true, true, System.currentTimeMillis()));
        assert rows.size() == 1 : "Expected 1 row, got " + toString(rows);
        row = rows.iterator().next();
        assertColumnNames(row, "c0", "c1", "c2");


        sp.getSlice_range().setStart(ByteBufferUtil.getArray(ByteBufferUtil.bytes("c2")));
        filter = ThriftValidation.asIFilter(sp, cfs.metadata, null);
        rows = cfs.getRangeSlice(cfs.makeExtendedFilter(new Bounds<RowPosition>(row.key, min), filter, null, 3, true, true, System.currentTimeMillis()));
        assert rows.size() == 2 : "Expected 2 rows, got " + toString(rows);
        iter = rows.iterator();
        row1 = iter.next();

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        {
            putColsStandard(cfs, idk(i), column("name", "value", 1));
        }
        cfs.forceBlockingFlush();


        SlicePredicate sp = new SlicePredicate();
        sp.setSlice_range(new SliceRange());
        sp.getSlice_range().setCount(1);
        sp.getSlice_range().setStart(ArrayUtils.EMPTY_BYTE_ARRAY);
        sp.getSlice_range().setFinish(ArrayUtils.EMPTY_BYTE_ARRAY);
        IDiskAtomFilter qf = ThriftValidation.asIFilter(sp, cfs.metadata, null);


        List<Row> rows;


        // Start and end inclusive

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            ConfigHelper.setRpcPort(job.getConfiguration(), "9160");
            ConfigHelper.setInitialAddress(job.getConfiguration(), "localhost");
            ConfigHelper.setPartitioner(job.getConfiguration(), "org.apache.cassandra.dht.RandomPartitioner");
            ConfigHelper.setInputColumnFamily(job.getConfiguration(), KEYSPACE, COLUMN_FAMILY);
            SlicePredicate predicate = new SlicePredicate().setColumn_names(Arrays.asList(ByteBufferUtil.bytes(columnName)));
            ConfigHelper.setInputSlicePredicate(job.getConfiguration(), predicate);


            job.waitForCompletion(true);
        }
        return 0;

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        String key_user_id = "1";
        String columnFamily = "Standard1";
        ColumnParent columnParent = new ColumnParent(columnFamily);


        //Gets column by key
        SlicePredicate predicate = new SlicePredicate();
        predicate.setSlice_range(new SliceRange(ByteBuffer.wrap(new byte[0]), ByteBuffer.wrap(new byte[0]), false, 100));
        List<ColumnOrSuperColumn> columnsByKey = client.get_slice(ByteBuffer.wrap(key_user_id.getBytes()), columnParent, predicate, ConsistencyLevel.ALL);
        System.out.println(columnsByKey);


            /*//Get all keys
            KeyRange keyRange = new KeyRange(100);

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            String columnFamily = in.readUTF();


            TDeserializer dser = new TDeserializer(new TBinaryProtocol.Factory());
            IndexClause indexClause = new IndexClause();
            FBUtilities.deserialize(dser, indexClause, in);
            SlicePredicate predicate = new SlicePredicate();
            FBUtilities.deserialize(dser, predicate, in);
            AbstractBounds range = AbstractBounds.serializer().deserialize(in);


            return new IndexScanCommand(keyspace, columnFamily, indexClause, predicate, range);
        }

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    private static SlicePredicate predicateFromString(String st)
    {
        assert st != null;
        TDeserializer deserializer = new TDeserializer(new TBinaryProtocol.Factory());
        SlicePredicate predicate = new SlicePredicate();
        try
        {
            deserializer.deserialize(predicate, FBUtilities.hexToBytes(st));
        }
        catch (TException e)

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