38a54df863
People keep tripping over the old copyrights and copy-pasting them to new files. Search and replace "Cloudius Systems" with "ScyllaDB". Message-Id: <1460013664-25966-1-git-send-email-penberg@scylladb.com>
124 lines
3.3 KiB
C++
124 lines
3.3 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright (C) 2015 ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "cql3/selection/selection.hh"
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#include "cql3/selection/selector.hh"
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namespace cql3 {
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namespace selection {
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class simple_selector_factory : public selector::factory {
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private:
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const sstring _column_name;
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const uint32_t _idx;
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data_type _type;
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public:
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simple_selector_factory(const sstring& column_name, uint32_t idx, data_type type)
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: _column_name(std::move(column_name))
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, _idx(idx)
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, _type(type)
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{ }
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virtual sstring column_name() override {
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return _column_name;
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}
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virtual data_type get_return_type() override {
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return _type;
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}
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virtual ::shared_ptr<selector> new_instance() override;
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};
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class simple_selector : public selector {
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private:
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const sstring _column_name;
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const uint32_t _idx;
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data_type _type;
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bytes_opt _current;
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public:
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static ::shared_ptr<factory> new_factory(const sstring& column_name, uint32_t idx, data_type type) {
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return ::make_shared<simple_selector_factory>(column_name, idx, type);
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}
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simple_selector(const sstring& column_name, uint32_t idx, data_type type)
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: _column_name(std::move(column_name))
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, _idx(idx)
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, _type(type)
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{ }
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virtual void add_input(cql_serialization_format sf, result_set_builder& rs) override {
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// TODO: can we steal it?
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_current = (*rs.current)[_idx];
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}
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virtual bytes_opt get_output(cql_serialization_format sf) override {
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return std::move(_current);
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}
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virtual void reset() override {
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_current = {};
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}
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virtual data_type get_type() override {
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return _type;
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}
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virtual sstring assignment_testable_source_context() const override {
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return _column_name;
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}
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#if 0
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@Override
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public String toString()
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{
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return columnName;
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}
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#endif
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};
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}
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}
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