fa2b0384d2
Replace stdx::optional and stdx::string_view with the C++ std counterparts. Some instances of boost::variant were also replaced with std::variant, namely those that called seastar::visit. Scylla now requires GCC 8 to compile. Signed-off-by: Duarte Nunes <duarte@scylladb.com> Message-Id: <20190108111141.5369-1-duarte@scylladb.com>
91 lines
3.2 KiB
C++
91 lines
3.2 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) 2017 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/statements/index_target.hh"
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#include <boost/algorithm/string/predicate.hpp>
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#include <regex>
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namespace secondary_index {
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struct target_parser {
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static std::pair<const column_definition*, cql3::statements::index_target::target_type>
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parse(schema_ptr schema, const index_metadata& im)
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{
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sstring target = im.options().at(cql3::statements::index_target::target_option_name);
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auto result = parse(schema, target);
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if (!result) {
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throw exceptions::configuration_exception(format("Unable to parse targets for index {} ({})", im.name(), target));
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}
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return *result;
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}
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static std::optional<std::pair<const column_definition*, cql3::statements::index_target::target_type>>
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parse(schema_ptr schema, const sstring& target)
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{
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using namespace cql3::statements;
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// if the regex matches then the target is in the form "keys(foo)", "entries(bar)" etc
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// if not, then it must be a simple column name and implictly its type is VALUES
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sstring column_name;
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index_target::target_type target_type;
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static const std::regex target_regex("^(keys|entries|values|full)\\((.+)\\)$");
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std::cmatch match;
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if (std::regex_match(target.data(), match, target_regex)) {
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target_type = index_target::from_sstring(match[1].str());
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column_name = match[2].str();
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} else {
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column_name = target;
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target_type = index_target::target_type::values;
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}
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auto column = schema->get_column_definition(utf8_type->decompose(column_name));
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if (!column) {
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return std::nullopt;
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}
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return std::make_pair(column, target_type);
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}
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};
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}
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