93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
"""
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Building repository with database CRUD operations
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SPDX - License - Identifier: LGPL - 3.0 - or -later
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Copyright © 2022 Concordia CERC group
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Project Coder Peter Yefi peteryefi@gmail.com
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"""
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from city_model_structure.building import Building as CityBuilding
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from sqlalchemy.exc import SQLAlchemyError
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from persistence.models import Building
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from persistence import BaseRepo
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from helpers.city_util import CityUtil
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from sqlalchemy import select
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class BuildingRepo(BaseRepo):
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def __init__(self, db_name):
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super().__init__(db_name)
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self._city_util = CityUtil()
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def insert(self, building: CityBuilding, city_id: int) -> Building:
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"""
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Inserts a new building into the database
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:param building: the building to insert
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:param city_id: the city the building belongs to
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:return:
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"""
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model_building = Building()
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model_building.name = building.name
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model_building.function = building.function
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model_building.construction_year = building.year_of_construction
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model_building.floor_area = building.floor_area
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model_building.city_id = city_id
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model_building.data = self._city_util.extract_building_data(building)
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try:
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self.session.add(model_building)
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self.session.flush()
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self.session.commit()
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return model_building
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except SQLAlchemyError as err:
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print(f'Error while adding building: {err}')
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def get_by_id(self, building_id: int) -> Building:
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"""
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Fetch a building based on the id
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:param building_id: the building id
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:return: a Building
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"""
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try:
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return self.session.execute(select(Building).where(Building.id == building_id)).first()[0]
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except SQLAlchemyError as err:
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print(f'Error while fetching building: {err}')
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def get_by_name(self, building_name: str) -> [Building]:
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"""
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Fetch a building based on the name
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:param building_name: the name of the building
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:return: [Building] with the provided name
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"""
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try:
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result_set = self.session.execute(select(Building).where(Building.name == building_name))
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return [building[0] for building in result_set]
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except SQLAlchemyError as err:
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print(f'Error while fetching buildings: {err}')
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def get_by_construction_year(self, year: int):
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"""
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Fetch a building based on the year of construction
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:param year: the construction year of the building
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:return: [Building]
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"""
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try:
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result_set = self.session.execute(select(Building).where(Building.construction_year == year))
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return [building[0] for building in result_set]
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except SQLAlchemyError as err:
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print(f'Error while fetching buildings: {err}')
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def get_by_city(self, city_id: int):
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"""
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Get all the buildings in a city
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:param city_id: the city id
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:return: [Building]
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"""
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try:
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result_set = self.session.execute(select(Building).where(Building.city_id == city_id))
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return [building[0] for building in result_set]
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except SQLAlchemyError as err:
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print(f'Error while fetching buildings: {err}')
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