123 lines
4.7 KiB
Python
123 lines
4.7 KiB
Python
# coding: utf-8
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import os
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import os.path
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import codecs
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import json
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#----------------------------------------------------------
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class Database_cl(object):
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#----------------------------------------------------------
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# da es hier nur darum geht, die Daten dauerhaft zu speichern,
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# wird ein sehr einfacher Ansatz verwendet:
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# - es können Daten zu genau 15 Teams gespeichert werden
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# - je Team werden 2 Teilnehmer mit Namen, Vornamen und Matrikelnummer
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# berücksichtigt
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# - die Daten werden als eine JSON-Datei abgelegt
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#-------------------------------------------------------
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def __init__(self):
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#-------------------------------------------------------
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self.data = {}
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self.data['students'] = {}
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self.data['teachers'] = {}
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self.data['companies'] = {}
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self.data['offerings'] = {}
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self.Read('students')
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self.Read('teachers')
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self.Read('companies')
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self.Read('offerings')
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#-------------------------------------------------------
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def Read(self, category):
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#-------------------------------------------------------
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path = 'data/' + category
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if not(os.path.exists(path)):
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os.makedirs(path)
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categoryDir = os.listdir(path)
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for fileName in categoryDir:
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if fileName.endswith('.json') and fileName != 'last.json':
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file = codecs.open(os.path.join('data', category, fileName), 'rU', 'utf-8')
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fileContent = file.read()
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id = fileName[:-5]
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self.data[category][id] = json.loads(fileContent)
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#-------------------------------------------------------
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def ReadEntry(self, category = None, id = None):
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#-------------------------------------------------------
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print("ReadEntry: ", category, id)
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data = None
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if id == None:
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data = self.data
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else:
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if id in self.data[category]:
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data = self.data[category][id]
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print(data, "\n")
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return data
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#-------------------------------------------------------
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def Save(self, data, category):
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#-------------------------------------------------------
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status_b = False
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id = data['id']
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print("ID: ", id, "\n")
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if(id != "None"):
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if id in self.data[category]:
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file = codecs.open(os.path.join('data', category, id+'.json'), 'w', 'utf-8')
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file.write(json.dumps(data, indent=3, ensure_ascii=True))
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file.close()
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self.data[category][id] = data
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status_b = True
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else:
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data['id'] = self.IdNext(category)
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file = codecs.open(os.path.join('data', category, data['id']+'.json'), 'w', 'utf-8')
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file.write(json.dumps(data, indent=3, ensure_ascii=True))
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file.close()
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self.data[category][id] = data
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status_b = True
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return status_b
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#-------------------------------------------------------
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def Delete(self, category, id):
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#-------------------------------------------------------
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status_b = False
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if id in self.data[category]:
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os.remove(os.path.join('data', category, id+'json'))
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del self.data[category][id]
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return status_b
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#-------------------------------------------------------
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def GetDefault(self, category):
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#-------------------------------------------------------
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if(category == 'students'):
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return {'name':'name', 'vorname':'vorname', 'matrikelnummer':'matrikelnummer'}
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elif(category == 'teachers'):
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return {'titel':'titel', 'name':'name', 'vorname':'vorname', 'lehrgebiet':'lehrgebiet'}
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elif(category == 'companies'):
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return {'name':'name', 'branche':'branche', 'schwerpunkt':'schwerpunkt', 'sitz':'sitz', 'anzahlMitarbeiter':'anzahlMitarbeiter'}
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elif(category == 'offerings'):
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return {'name':'name', 'company':'company', 'beschreibung':'beschreibung', 'voraussetzungen':'voraussetzungen', 'firmenbetreuer':'firmenbetreuer'}
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#-------------------------------------------------------
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def IdNext(self, category):
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#-------------------------------------------------------
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path = 'data/' + category + '/last.json'
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if(os.path.isfile(path)):
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file = open(os.path.join('data', category, 'last.json'), 'r+')
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last = file.read()
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last = str(int(last)+1)
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file.seek(0)
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file.write(last)
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file.close()
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else:
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file = open(os.path.join('data', category, 'last.json'), 'w+')
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last = str(int(0))
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file.write(last)
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file.close()
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return last
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# EOF |