Examples of org.apache.cassandra.db.filter.IDiskAtomFilter$Serializer

org.apache.cassandra.db.filter.IDiskAtomFilter
Given an implementation-specific description of what columns to look for, provides methods to extract the desired columns from a Memtable, SSTable, or SuperColumn. Either the get*ColumnIterator methods will be called, or filterSuperColumn, but not both on the same object. QueryFilter takes care of putting the two together if subcolumn filtering needs to be done, based on the querypath that it knows (but that IFilter implementations are oblivious to).

            IPartitioner p = StorageService.getPartitioner();
            IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"),
                                                       IndexOperator.EQ,
                                                       ByteBufferUtil.bytes(val));
            List<IndexExpression> clause = Arrays.asList(expr);
            IDiskAtomFilter filter = new IdentityQueryFilter();
            Range<RowPosition> range = Util.range("", "");
            List<Row> rows = cfs.search(clause, range, 100, filter);
            assertEquals(1, rows.size());
            assert rows.get(0).key.key.equals(ByteBufferUtil.bytes(key));
        }

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                bounds = new Bounds<RowPosition>(RowPosition.forKey(range.start_key, p), end);
            }
            schedule(DatabaseDescriptor.getRangeRpcTimeout());
            try
            {
                IDiskAtomFilter filter = ThriftValidation.asIFilter(predicate,
                        metadata.getComparatorFor(column_parent.super_column));
                rows = StorageProxy.getRangeSlice(new RangeSliceCommand(keyspace, column_parent, filter, bounds,
                        range.row_filter, range.count), consistencyLevel);
            }
            finally

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            List<Row> rows;
            schedule(DatabaseDescriptor.getRangeRpcTimeout());
            try
            {
                IDiskAtomFilter filter = ThriftValidation.asIFilter(predicate, metadata.comparator);
                rows = StorageProxy.getRangeSlice(new RangeSliceCommand(keyspace, column_family, null, filter,
                        bounds, range.row_filter, range.count, true, true), consistencyLevel);
            }
            finally
            {

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            IPartitioner p = StorageService.getPartitioner();
            AbstractBounds<RowPosition> bounds = new Bounds<RowPosition>(RowPosition.forKey(index_clause.start_key, p),
                    p.getMinimumToken().minKeyBound());


            IDiskAtomFilter filter = ThriftValidation.asIFilter(column_predicate,
                    metadata.getComparatorFor(column_parent.super_column));
            RangeSliceCommand command = new RangeSliceCommand(keyspace,
                    column_parent.column_family,
                    null,
                    filter,

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                total++;
                ColumnFamily data = rawRow.cf;


                if (rowIterator.needsFiltering())
                {
                    IDiskAtomFilter extraFilter = filter.getExtraFilter(data);
                    if (extraFilter != null)
                    {
                        QueryPath path = new QueryPath(columnFamily);
                        ColumnFamily cf = filter.cfs.getColumnFamily(new QueryFilter(rawRow.key, path, extraFilter));
                        if (cf != null)

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            byte[] buf = new byte[scLength];
            dis.readFully(buf);
            superColumn = ByteBuffer.wrap(buf);
        }


        IDiskAtomFilter predicate;
        AbstractType<?> comparator = ColumnFamily.getComparatorFor(keyspace, columnFamily, superColumn);
        if (version < MessagingService.VERSION_12)
        {
            SlicePredicate pred = new SlicePredicate();
            FBUtilities.deserialize(new TDeserializer(new TBinaryProtocol.Factory()), pred, dis);

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        rm.apply();


        // basic single-expression query
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexExpression.Operator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr);
        IDiskAtomFilter filter = new IdentityQueryFilter();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = cfs.search(range, clause, filter, 100);


        assert rows != null;
        assert rows.size() == 2 : StringUtils.join(rows, ",");

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        }


        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexExpression.Operator.EQ, ByteBufferUtil.bytes(34L));
        IndexExpression expr2 = new IndexExpression(ByteBufferUtil.bytes("notbirthdate"), IndexExpression.Operator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr, expr2);
        IDiskAtomFilter filter = new IdentityQueryFilter();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = cfs.search(range, clause, filter, 100);


        assert rows != null;
        assert rows.size() == 50 : rows.size();

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        rm.add("Indexed1", cellname("birthdate"), ByteBufferUtil.bytes(1L), 0);
        rm.apply();


        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexExpression.Operator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr);
        IDiskAtomFilter filter = new IdentityQueryFilter();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = cfs.search(range, clause, filter, 100);
        assert rows.size() == 1 : StringUtils.join(rows, ",");
        String key = ByteBufferUtil.string(rows.get(0).key.getKey());
        assert "k1".equals( key );

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        rm.add("Indexed1", birthdate, ByteBufferUtil.bytes(2L), 2);
        rm.apply();


        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexExpression.Operator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr);
        IDiskAtomFilter filter = new IdentityQueryFilter();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = cfs.search(range, clause, filter, 100);
        assert rows.size() == 0;


        expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexExpression.Operator.EQ, ByteBufferUtil.bytes(2L));

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