138 lines
4.5 KiB
C++
138 lines
4.5 KiB
C++
/*
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* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2.0,
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* as published by the Free Software Foundation.
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*
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* This program is also distributed with certain software (including
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* but not limited to OpenSSL) that is licensed under separate terms,
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* as designated in a particular file or component or in included license
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* documentation. The authors of MySQL hereby grant you an additional
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* permission to link the program and your derivative works with the
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* separately licensed software that they have included with MySQL.
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*
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* This program 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, version 2.0, 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// MySQL DB access module, for use by plugins and others
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// For the module that implements interactive DB functionality see mod_db
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#ifndef PLUGIN_X_CLIENT_XQUERY_RESULT_IMPL_H_
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#define PLUGIN_X_CLIENT_XQUERY_RESULT_IMPL_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "plugin/x/client/context/xcontext.h"
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#include "plugin/x/client/mysqlxclient/xprotocol.h"
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#include "plugin/x/client/mysqlxclient/xquery_result.h"
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#include "plugin/x/client/xquery_instances.h"
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#include "plugin/x/client/xrow_impl.h"
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namespace xcl {
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class Query_result : public XQuery_result {
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public:
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using Row_ptr = std::unique_ptr<Mysqlx::Resultset::Row>;
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public:
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explicit Query_result(std::shared_ptr<XProtocol> protocol,
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Query_instances *query_instances,
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std::shared_ptr<Context> context);
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~Query_result() override;
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bool try_get_last_insert_id(uint64_t *out_last_id) const override;
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bool try_get_affected_rows(uint64_t *out_affected_number) const override;
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bool try_get_info_message(std::string *out_message) const override;
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bool try_get_generated_document_ids(
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std::vector<std::string> *out_ids) const override;
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const Metadata &get_metadata(XError *out_error) override;
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void set_metadata(const Metadata &metadata) override;
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const Warnings &get_warnings() override;
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bool next_resultset(XError *out_error) override;
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Row_ptr get_next_row_raw(XError *out_error) override;
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bool get_next_row(const XRow **out_row, XError *out_error) override;
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const XRow *get_next_row(XError *out_error) override;
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bool has_resultset(XError *out_error) override;
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bool is_out_parameter_resultset() const override;
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private:
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void clear();
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Handler_result handle_notice(const Mysqlx::Notice::Frame::Type type,
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const char *payload,
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const uint32_t payload_size);
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bool had_fetch_not_ended() const;
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void check_if_stmt_ok();
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void read_if_needed_metadata();
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Row_ptr read_row();
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XError read_metadata(const XProtocol::Server_message_type_id msg_id,
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std::unique_ptr<XProtocol::Message> &msg);
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bool is_end_resultset_msg() const;
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void check_error(const XError &error);
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bool verify_current_instance(XError *out_error);
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bool check_if_fetch_done();
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template <typename Type>
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class Optional_value {
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public:
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Optional_value() : m_value(Type()), m_has_value(false) {}
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Optional_value &operator=(const Type &value) {
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m_value = value;
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m_has_value = true;
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return *this;
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}
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bool get_value(Type *out_value) const {
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if (!m_has_value) return false;
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if (out_value) *out_value = m_value;
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return true;
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}
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private:
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Type m_value;
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bool m_has_value{false};
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};
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bool m_received_fetch_done{false};
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bool m_read_metadata{true};
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bool m_is_out_param_resultset{false};
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std::shared_ptr<XProtocol> m_protocol;
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XError m_error;
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Metadata m_metadata;
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XProtocol::Handler_id m_notice_handler_id;
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Optional_value<uint64_t> m_last_insert_id;
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Optional_value<uint64_t> m_affected_rows;
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Optional_value<std::string> m_producted_message;
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std::vector<std::string> m_generated_document_ids;
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Message_holder m_holder;
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Warnings m_warnings;
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XRow_impl m_row;
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Query_instances *m_query_instances;
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Query_instances::Instance_id m_instance_id;
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std::shared_ptr<Context> m_context;
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};
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} // namespace xcl
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#endif // PLUGIN_X_CLIENT_XQUERY_RESULT_IMPL_H_
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