mirror of
https://git.rwth-aachen.de/acs/public/villas/web-backend-go/
synced 2025-03-30 00:00:12 +01:00
132 lines
3.4 KiB
Go
132 lines
3.4 KiB
Go
/** Signal package, methods.
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*
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* @author Sonja Happ <sonja.happ@eonerc.rwth-aachen.de>
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* @copyright 2014-2019, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASweb-backend-go
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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 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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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 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, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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package signal
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import (
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"git.rwth-aachen.de/acs/public/villas/web-backend-go/database"
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"git.rwth-aachen.de/acs/public/villas/web-backend-go/routes/simulationmodel"
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)
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type Signal struct {
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database.Signal
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}
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func (s *Signal) save() error {
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db := database.GetDB()
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err := db.Create(s).Error
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return err
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}
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func (s *Signal) byID(id uint) error {
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db := database.GetDB()
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err := db.Find(s, id).Error
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if err != nil {
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return err
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}
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return nil
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}
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func (s *Signal) addToSimulationModel() error {
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db := database.GetDB()
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var m simulationmodel.SimulationModel
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err := m.ByID(s.SimulationModelID)
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if err != nil {
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return err
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}
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// save signal to DB
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err = s.save()
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if err != nil {
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return err
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}
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// associate signal with simulation model in correct direction
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if s.Direction == "in" {
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err = db.Model(&m).Association("InputMapping").Append(s).Error
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if err != nil {
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return err
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}
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// adapt length of mapping
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var newInputLength = db.Model(m).Where("Direction = ?", "in").Association("InputMapping").Count()
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err = db.Model(m).Update("InputLength", newInputLength).Error
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} else {
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err = db.Model(&m).Association("OutputMapping").Append(s).Error
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if err != nil {
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return err
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}
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// adapt length of mapping
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var newOutputLength = db.Model(m).Where("Direction = ?", "out").Association("OutputMapping").Count()
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err = db.Model(m).Update("OutputLength", newOutputLength).Error
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}
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return err
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}
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func (s *Signal) update(modifiedSignal Signal) error {
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db := database.GetDB()
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err := db.Model(s).Updates(map[string]interface{}{
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"Name": modifiedSignal.Name,
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"Unit": modifiedSignal.Unit,
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"Index": modifiedSignal.Index,
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}).Error
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return err
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}
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func (s *Signal) delete() error {
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db := database.GetDB()
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var m simulationmodel.SimulationModel
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err := m.ByID(s.SimulationModelID)
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if err != nil {
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return err
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}
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// remove association between Signal and SimulationModel
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// Signal itself is not deleted from DB, it remains as "dangling"
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if s.Direction == "in" {
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err = db.Model(&m).Association("InputMapping").Delete(s).Error
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if err != nil {
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return err
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}
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// Reduce length of mapping by 1
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var newInputLength = m.InputLength - 1
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err = db.Model(m).Update("InputLength", newInputLength).Error
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} else {
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err = db.Model(&m).Association("OutputMapping").Delete(s).Error
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if err != nil {
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return err
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}
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// Reduce length of mapping by 1
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var newOutputLength = m.OutputLength - 1
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err = db.Model(m).Update("OutputLength", newOutputLength).Error
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}
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return err
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}
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