f86a1270b0
Add a method that converts given term to the matching expression. It will be used as an intermediate step when implementing evaluate(expression). evaluate(term) will convert the term to the expression and then call evaluate(expression). For terminals this is simply calling get() to serialize the value. For non-terminals the implementation is more complicated and will be implemeted in the following commits. Signed-off-by: Jan Ciolek <jan.ciolek@scylladb.com>
93 lines
3.3 KiB
C++
93 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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* Modified by ScyllaDB
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*
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* Copyright (C) 2015-present 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 "function.hh"
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#include "scalar_function.hh"
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#include "cql3/term.hh"
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#include "exceptions/exceptions.hh"
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#include "cql3/functions/function_name.hh"
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namespace cql3::expr {
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struct function_call;
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}
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namespace cql3 {
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namespace functions {
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class function_call : public non_terminal {
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const shared_ptr<scalar_function> _fun;
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const std::vector<shared_ptr<term>> _terms;
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// 0-based index of the function call within a CQL statement.
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// Used to populate the cache of execution results while passing to
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// another shard (handling `bounce_to_shard` messages) in LWT statements.
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//
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// The id is set only for the function calls that are a part of LWT
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// statement restrictions for the partition key. Otherwise, the id is not
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// set and the call is not considered when using or populating the cache.
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std::optional<uint8_t> _id;
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public:
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function_call(shared_ptr<scalar_function> fun, std::vector<shared_ptr<term>> terms)
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: _fun(std::move(fun)), _terms(std::move(terms)) {
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}
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virtual void fill_prepare_context(prepare_context& ctx) const override;
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void set_id(std::optional<uint8_t> id) {
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_id = id;
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}
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virtual shared_ptr<terminal> bind(const query_options& options) override;
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virtual expr::expression to_expression() override;
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public:
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virtual bool contains_bind_marker() const override;
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private:
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cql3::raw_value_view bind_and_get_internal(const query_options& options);
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};
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::shared_ptr<term> prepare_function_call(const expr::function_call& fc, database& db, const sstring& keyspace, lw_shared_ptr<column_specification> receiver);
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assignment_testable::test_result test_assignment_function_call(const cql3::expr::function_call& fc, database& db, const sstring& keyspace, const column_specification& receiver);
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}
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}
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