daeddda7cc
storage_proxy.hh is huge and includes many headers itself, so remove its inclusions from headers and re-add smaller headers where needed (and storage_proxy.hh itself in source files that need it). Ref #1.
148 lines
4.3 KiB
C++
148 lines
4.3 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) 2014 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 "service/client_state.hh"
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#include "service/query_state.hh"
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#include "cql3/query_options.hh"
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#include "timeout_config.hh"
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namespace service {
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class storage_proxy;
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}
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namespace cql_transport {
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namespace messages {
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class result_message;
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}
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}
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namespace cql3 {
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class query_processor;
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class metadata;
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shared_ptr<const metadata> make_empty_metadata();
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class cql_statement {
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timeout_config_selector _timeout_config_selector;
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public:
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// CQL statement text
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sstring raw_cql_statement;
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explicit cql_statement(timeout_config_selector timeout_selector) : _timeout_config_selector(timeout_selector) {}
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virtual ~cql_statement()
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{ }
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timeout_config_selector get_timeout_config_selector() const { return _timeout_config_selector; }
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virtual uint32_t get_bound_terms() const = 0;
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/**
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* Perform any access verification necessary for the statement.
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*
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* @param state the current client state
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*/
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virtual future<> check_access(service::storage_proxy& proxy, const service::client_state& state) const = 0;
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/**
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* Perform additional validation required by the statment.
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* To be overriden by subclasses if needed.
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*
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* @param state the current client state
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*/
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virtual void validate(service::storage_proxy& proxy, const service::client_state& state) const = 0;
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/**
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* Execute the statement and return the resulting result or null if there is no result.
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*
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* @param state the current query state
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* @param options options for this query (consistency, variables, pageSize, ...)
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*/
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virtual future<::shared_ptr<cql_transport::messages::result_message>>
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execute(query_processor& qp, service::query_state& state, const query_options& options) const = 0;
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virtual bool depends_on_keyspace(const sstring& ks_name) const = 0;
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virtual bool depends_on_column_family(const sstring& cf_name) const = 0;
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virtual shared_ptr<const metadata> get_result_metadata() const = 0;
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virtual bool is_conditional() const {
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return false;
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}
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};
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class cql_statement_no_metadata : public cql_statement {
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public:
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using cql_statement::cql_statement;
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virtual shared_ptr<const metadata> get_result_metadata() const override {
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return make_empty_metadata();
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}
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};
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// Conditional modification statements and batches
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// return a result set and have metadata, while same
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// statements without conditions do not.
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class cql_statement_opt_metadata : public cql_statement {
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protected:
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// Result set metadata, may be empty for simple updates and batches
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shared_ptr<metadata> _metadata;
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public:
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using cql_statement::cql_statement;
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virtual shared_ptr<const metadata> get_result_metadata() const override {
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if (_metadata) {
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return _metadata;
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}
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return make_empty_metadata();
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}
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};
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}
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