127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
/*
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* This file is a part of morm
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* and is distributed under the 2-Clause BSD licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2018, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef headerfile_morm_postgresqlconnector
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#define headerfile_morm_postgresqlconnector
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#include "dbconnector.h"
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#include <libpq-fe.h>
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#include <string>
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namespace morm
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{
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class PostgreSQLConnector : public DbConnector
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{
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public:
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PostgreSQLConnector();
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virtual ~PostgreSQLConnector();
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void set_log_queries(bool log_queries);
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bool query(const PT::TextStream & stream);
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bool query(const char * query_str);
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bool query(const std::string & query_str);
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bool query_select(const char * query_str);
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bool query_update(const char * query_str);
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bool query_insert(const char * query_str);
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bool query_select(const PT::TextStream & stream);
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bool query_update(const PT::TextStream & stream);
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bool query_insert(const PT::TextStream & stream);
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void map_values_from_query(Model & model);
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bool is_last_result(ExecStatusType t);
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/*
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* get column index from the last query (select)
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* returns -1 if there is no such a column
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*
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*/
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int get_column_index(const char * column_name);
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bool is_null(int row, int col);
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/*
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* return an item from the last query
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* can return a null pointer if there is no such an item in the last result
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*
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*/
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const char * get_value(int row, int col);
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bool get_value(int row, int col, std::string & result, bool clear_string = true);
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bool get_value(int row, int col, std::wstring & result, bool clear_string = true);
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void get_value_bin(int row, int col, std::string & result, bool clear_string = true);
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void clear_result();
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void set_conn_param(const std::wstring & database, const std::wstring & user, const std::wstring & pass);
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void connect();
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void wait_for_connection();
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void close();
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bool assert_connection(bool put_log = true, bool throw_if_no_connection = true);
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void set_db_parameters();
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void log_connection_socket();
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//PGconn * GetPgConn();
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protected:
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PGconn * pg_conn;
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PGresult * last_result; // can be null
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ExecStatusType last_status;
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bool log_queries;
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PT::TextStream stream;
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std::string query_str;
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std::wstring db_database;
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std::wstring db_user;
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std::wstring db_pass;
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void allocate_default_expression();
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void overwrite(PT::TextStream & stream);
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};
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}
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#endif
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