Praktikum 2 Progress
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darthsandmann
@@ -19,104 +19,103 @@ class Database_cl(object):
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#-------------------------------------------------------
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def __init__(self):
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#-------------------------------------------------------
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self.data_o = None
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self.readData_p()
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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 create_px(self, data_opl):
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def ReadEntry(self, category = None, id = None):
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#-------------------------------------------------------
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# Überprüfung der Daten müsste ergänzt werden!
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# 'freien' Platz suchen,
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# falls vorhanden: belegen und Nummer des Platzes als Id zurückgeben
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id_s = None
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for loop_i in range(0,15):
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if self.data_o[str(loop_i)][0] == '':
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id_s = str(loop_i)
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self.data_o[id_s] = data_opl
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self.saveData_p()
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break
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return id_s
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#-------------------------------------------------------
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def read_px(self, id_spl = None):
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#-------------------------------------------------------
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# hier zur Vereinfachung:
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# Aufruf ohne id: alle Einträge liefern
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data_o = None
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if id_spl == None:
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data_o = self.data_o
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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_spl in self.data_o:
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data_o = self.data_o[id_spl]
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if id in self.data[category]:
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data = self.data[category][id]
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return data_o
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return data
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#-------------------------------------------------------
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def update_px(self, id_spl, data_opl):
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def Save(self, data, category):
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#-------------------------------------------------------
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# Überprüfung der Daten müsste ergänzt werden!
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status_b = False
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if id_spl in self.data_o:
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self.data_o[id_spl] = data_opl
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self.saveData_p()
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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_px(self, id_spl):
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def Delete(self, category, id):
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#-------------------------------------------------------
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#print("\n---------------------- DELETE ---------------------")
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status_b = False
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if id_spl in self.data_o:
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pass
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# hier müssen Sie den Code ergänzen
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# Löschen als Zurücksetzen auf die Default-Werte implementieren
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# Ihre Ergänzung
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self.data_o[id_spl] = {}
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default_s = self.getDefault_px()
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self.data_o[id_spl] = default_s
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self.saveData_p()
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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 getDefault_px(self):
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def IdNext(self, category):
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#-------------------------------------------------------
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return ['', '', '', '', '', '', '', ''] # HIER müssen Sie eine Ergänzung vornehmen
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#-------------------------------------------------------
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def readData_p(self):
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#-------------------------------------------------------
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try:
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fp_o = codecs.open(os.path.join('data', 'webteams.json'), 'r', 'utf-8')
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except:
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# Datei neu anlegen self.data_o = {}
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self.data_o = {}
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for loop_i in range(0,15):
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self.data_o[str(loop_i)] = ['', '', '', '', '', '', '', '']
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self.saveData_p()
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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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with fp_o:
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self.data_o = json.load(fp_o)
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return
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#-------------------------------------------------------
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def saveData_p(self):
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#-------------------------------------------------------
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with codecs.open(os.path.join('data', 'webteams.json'), 'w', 'utf-8') as fp_o:
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json.dump(self.data_o, fp_o)
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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
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