255 lines
6.9 KiB
C++
255 lines
6.9 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_baseexpression
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#define headerfile_morm_baseexpression
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#include "textstream/textstream.h"
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#include "morm_types.h"
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namespace morm
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{
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class Model;
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class ModelConnector;
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class BaseExpression
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{
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public:
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BaseExpression();
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virtual ~BaseExpression();
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virtual void set_work_mode(int work_mode);
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virtual void generate_from_model(PT::TextStream & stream, Model & model);
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protected:
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int work_mode; /* what to do: generating fields list, values list or fields-values list */
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bool is_first_field;
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// niech Stream bedzie jakims interfejsem z operatorami << dla standardowych typow
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// albo w pikotoolsach dodać klase bazowa (intefejs) dla streamow
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// i dodatkowo dodac loger ktory dziedziczy po niej i dodaje loglevel i endline
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// jako metode bazowa dodac format("string", parametry,...)
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// przyda sie do formatowania doubli
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PT::TextStream * out_stream;
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// virtual void map_fields(Model * model)
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// {
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// work_mode = model->work_mode;
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// out_stream = model->out_stream;
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// is_insert = model->is_insert;
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// is_update = model->is_update;
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//
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// generate_from_model();
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// }
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virtual void before_generate_from_model();
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virtual void after_generate_from_model();
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virtual bool can_field_be_generated(bool insertable, bool updatable, bool is_primary_key);
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virtual void field_before();
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virtual void field_after();
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template<typename FieldValue>
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void field(const wchar_t * field_name, const FieldValue & field_value, bool insertable = true, bool updatable = true, bool is_primary_key = false)
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{
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if( can_field_be_generated(insertable, updatable, is_primary_key) )
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{
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field_before();
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if( work_mode == MORM_WORK_MODE_MODEL_FIELDS )
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{
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put_field_name(field_name);
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}
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else
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if( work_mode == MORM_WORK_MODE_MODEL_VALUES )
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{
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put_field_value(field_value);
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}
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else
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if( work_mode == MORM_WORK_MODE_MODEL_FIELDS_VALUES )
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{
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print_field_name_value(field_name, field_value);
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}
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field_after();
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}
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}
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//void field(const wchar_t * field_name, Model & field, bool insertable = true, bool updatable = true);
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virtual void put_field_name(const wchar_t * field_name);
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template<typename FieldValue>
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void put_field_value(const FieldValue & field_value)
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{
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before_field_value(field_value);
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esc(field_value, *out_stream);
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after_field_value(field_value);
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}
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virtual void before_field_name();
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virtual void after_field_name();
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virtual void before_field_value(const std::wstring &);
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virtual void after_field_value(const std::wstring &);
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virtual void before_field_value(const std::string &);
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virtual void after_field_value(const std::string &);
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template<typename FieldValue>
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void before_field_value(const FieldValue &)
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{
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}
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template<typename FieldValue>
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void after_field_value(const FieldValue &)
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{
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}
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virtual void put_name_value_separator();
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/*
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template<typename Container>
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void field_container(const wchar_t * field_name, Container container, bool insertable = true, bool updatable = true)
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{
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typename Container::value Value; // czy tu jest Container::value? sprawdzic
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if( !is_first_field )
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(*out_stream) << ",";
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if( work_mode == ORM_STREAM_MODE_CREATING_JSON )
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{
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(*out_stream) << "[";
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boolean is_first = true;
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for(Value v : container)
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{
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if( !is_first )
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(*out_stream) << ",";
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v.map_fields(this);
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is_first = false;
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}
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(*out_stream) << "]";
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}
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// a co z bazą danych?
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is_first_field = false;
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}
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*/
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template<typename FieldValue>
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void print_field_name_value(const wchar_t * field_name, const FieldValue & field_value)
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{
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put_field_name(field_name);
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put_name_value_separator();
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put_field_value(field_value);
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}
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/*
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template<typename Container>
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virtual void field_container(const wchar_t * field_name, Container container, bool insertable = true, bool updatable = true)
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{
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typename Container::value Value; // czy tu jest Container::value? sprawdzic
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if( !is_first_field )
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(*out_stream) << ",";
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if( work_mode == ORM_STREAM_MODE_CREATING_JSON )
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{
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(*out_stream) << "[";
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boolean is_first = true;
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for(Value v : container)
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{
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if( !is_first )
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(*out_stream) << ",";
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v.map_fields(this);
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is_first = false;
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}
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(*out_stream) << "]";
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}
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// a co z bazą danych?
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is_first_field = false;
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}
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*/
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virtual void esc(char val, PT::TextStream & stream);
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virtual void esc(unsigned char val, PT::TextStream & stream);
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virtual void esc(const std::wstring & val, PT::TextStream & stream);
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virtual void esc(const wchar_t * val, PT::TextStream & stream);
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virtual void esc(const std::string & val, PT::TextStream & stream);
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virtual void esc(const char * val, PT::TextStream & stream);
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virtual void esc(bool val, PT::TextStream & stream);
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virtual void esc(short val, PT::TextStream & stream);
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virtual void esc(unsigned short val, PT::TextStream & stream);
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virtual void esc(int val, PT::TextStream & stream);
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virtual void esc(unsigned int val, PT::TextStream & stream);
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virtual void esc(long val, PT::TextStream & stream);
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virtual void esc(unsigned long val, PT::TextStream & stream);
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virtual void esc(long long val, PT::TextStream & stream);
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virtual void esc(unsigned long long val, PT::TextStream & stream);
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virtual void esc(float val, PT::TextStream & stream);
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virtual void esc(double val, PT::TextStream & stream);
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virtual void esc(long double val, PT::TextStream & stream);
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virtual void esc(void* val, PT::TextStream & stream);
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friend ModelConnector;
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};
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}
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#endif
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