190 lines
3.9 KiB
C++
190 lines
3.9 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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#include "modelconnector.h"
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#include "model.h"
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#include "flatconnector.h"
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#include "dbconnector.h"
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namespace morm
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{
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ModelConnector::ModelConnector()
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{
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flat_connector = nullptr;
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db_connector = nullptr;
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expression_callback = nullptr;
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out_stream = nullptr;
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out_stream_allocated = false;
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}
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ModelConnector::~ModelConnector()
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{
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deallocate_stream();
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}
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void ModelConnector::deallocate_stream()
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{
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if( out_stream_allocated )
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{
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delete out_stream;
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out_stream = nullptr;
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out_stream_allocated = false;
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}
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}
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void ModelConnector::allocate_default_stream()
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{
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deallocate_stream();
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out_stream = new PT::TextStream();
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out_stream_allocated = true;
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}
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void ModelConnector::allocate_default_stream_if_needed()
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{
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if( !out_stream )
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{
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allocate_default_stream();
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}
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}
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void ModelConnector::set_stream(PT::TextStream & stream)
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{
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deallocate_stream();
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this->out_stream = &stream;
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}
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PT::TextStream * ModelConnector::get_stream()
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{
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return out_stream;
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}
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void ModelConnector::set_flat_connector(FlatConnector & flat_connector)
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{
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this->flat_connector = &flat_connector;
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}
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void ModelConnector::set_db_connector(DbConnector & db_connector)
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{
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this->db_connector = &db_connector;
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}
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void ModelConnector::to_text(PT::TextStream & stream, Model & model)
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{
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if( flat_connector )
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{
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expression_callback = flat_connector->get_expression();
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if( expression_callback )
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{
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flat_connector->to_text(stream, model);
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}
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expression_callback = nullptr;
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}
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}
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void ModelConnector::generate_insert_query(PT::TextStream & stream, Model & model)
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{
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if( db_connector )
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{
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expression_callback = db_connector->get_expression();
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if( expression_callback )
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{
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db_connector->generate_insert_query(stream, model);
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}
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expression_callback = nullptr;
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}
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}
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void ModelConnector::generate_update_query(PT::TextStream & stream, Model & model)
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{
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if( db_connector )
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{
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expression_callback = db_connector->get_expression();
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if( expression_callback )
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{
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db_connector->generate_update_query(stream, model);
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}
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expression_callback = nullptr;
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}
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}
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void ModelConnector::insert(Model & model)
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{
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allocate_default_stream_if_needed();
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if( db_connector && out_stream )
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{
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out_stream->clear();
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db_connector->insert(*out_stream, model);
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}
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}
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void ModelConnector::update(Model & model)
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{
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allocate_default_stream_if_needed();
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if( db_connector && out_stream )
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{
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out_stream->clear();
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db_connector->update(*out_stream, model);
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}
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}
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}
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