158 lines
5.4 KiB
C++
158 lines
5.4 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) 2018-2019, 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_dbconnector
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#define headerfile_morm_dbconnector
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#include "textstream/textstream.h"
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#include "log/log.h"
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#include "queryresult.h"
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namespace morm
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{
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class Model;
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class DbExpression;
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class DbConnector
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{
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public:
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DbConnector();
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DbConnector(const DbConnector &);
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virtual ~DbConnector();
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virtual void set_logger(PT::Log * log);
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virtual void set_logger(PT::Log & log);
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virtual void set_log_queries(bool log_queries);
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DbExpression * get_expression();
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//virtual void clear_last_query_result();
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virtual void generate_select_columns(PT::TextStream & stream, Model & model);
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virtual void generate_insert_query(PT::TextStream & stream, Model & model);
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virtual void generate_update_query(PT::TextStream & stream, Model & model);
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virtual void generate_remove_query(PT::TextStream & stream, Model & model);
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virtual bool insert(PT::TextStream & stream, Model & model);
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virtual bool update(PT::TextStream & stream, Model & model);
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virtual bool remove(PT::TextStream & stream, Model & model);
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//void ModelConnector::get_values_from_db(Model & model)
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virtual QueryResult * create_query_result() = 0;
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virtual bool query(const PT::TextStream & stream, QueryResult & query_result);
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virtual bool query(const std::string & query_str, QueryResult & query_result);
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virtual bool query(const char * query_str, QueryResult & query_result);
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virtual bool query_select(const char * query_str, QueryResult & query_result);
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virtual bool query_update(const char * query_str, QueryResult & query_result);
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virtual bool query_insert(const char * query_str, QueryResult & query_result);
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virtual bool query_remove(const char * query_str, QueryResult & query_result);
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virtual bool query_select(const PT::TextStream & stream, QueryResult & query_result);
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virtual bool query_update(const PT::TextStream & stream, QueryResult & query_result);
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virtual bool query_insert(const PT::TextStream & stream, QueryResult & query_result);
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virtual bool query_remove(const PT::TextStream & stream, QueryResult & query_result);
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virtual void get_value(const char * value_str, char & field_value);
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virtual void get_value(const char * value_str, unsigned char & field_value);
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virtual void get_value(const char * value_str, std::wstring & field_value);
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virtual void get_value(const char * value_str, std::string & field_value);
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virtual void get_value(const char * value_str, bool & field_value);
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virtual void get_value(const char * value_str, short & field_value);
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virtual void get_value(const char * value_str, unsigned short & field_value);
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virtual void get_value(const char * value_str, int & field_value);
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virtual void get_value(const char * value_str, unsigned int & field_value);
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virtual void get_value(const char * value_str, long & field_value);
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virtual void get_value(const char * value_str, unsigned long & field_value);
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virtual void get_value(const char * value_str, long long & field_value);
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virtual void get_value(const char * value_str, unsigned long long & field_value);
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virtual void get_value(const char * value_str, float & field_value);
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virtual void get_value(const char * value_str, double & field_value);
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virtual void get_value(const char * value_str, long double & field_value);
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virtual void get_value(const char * value_str, PT::Date & field_value);
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template<typename FieldValue>
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bool get_last_sequence(const wchar_t * sequence_table_name, FieldValue & field_value)
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{
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const char * val_str = query_last_sequence(sequence_table_name);
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if( val_str )
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{
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get_value(val_str, field_value);
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if( log && log_queries )
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{
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(*log) << PT::Log::log3 << "Morm: sequence value: " << field_value << PT::Log::logend;
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}
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return true;
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}
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return false;
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}
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protected:
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DbExpression * db_expression;
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bool expression_allocated;
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PT::Log * log;
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bool log_queries;
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virtual void allocate_default_expression() = 0;
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virtual void allocate_default_expression_if_needed();
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virtual void deallocate_expression();
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virtual const char * query_last_sequence(const wchar_t * sequence_table_name);
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};
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}
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#endif
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