def update(self, text=Text()):
"""
(Text) -> (Text)
Update database text
"""
session = self.session_factory()
textDB = session.query(TextDB).filter_by(id=text.id).first()
dic = {}
if (textDB.language != text.language):
dic['language'] = text.language
if (textDB.plant != text.plant):
dic['plant'] = text.plant
if (textDB.status != text.status):
dic['status'] = text.status
if (textDB.attribute != text.attribute):
dic['attribute'] = text.attribute
if (textDB.value != text.value):
dic['value'] = text.value
if (textDB.reference != text.reference):
dic['reference'] = text.reference
if (dic != {}):
session.query(TextDB).filter_by(id=text.id).update(dic)
session.commit()
session.flush()
session.refresh(textDB)
return Text(textDB.id, textDB.language, textDB.plant, textDB.status,
textDB.attribute, textDB.value, textDB.reference)
def create(self, text=Text()):
"""
(Image) -> (Image)
Add image to database
"""
textDB = TextDB(text=text)
session = self.session_factory()
session.add(textDB)
session.flush()
session.refresh(textDB)
session.commit()
return Text(textDB.id, textDB.language, textDB.tag, textDB.value,
textDB.description)
def create(self, text=Text()):
"""
(Image) -> (Image)
Add image to database
"""
textDB = TextDB(text=text)
session = self.session_factory()
session.add(textDB)
session.flush()
session.refresh(textDB)
session.commit()
return Text(textDB.id, textDB.language, textDB.plant, textDB.status,
textDB.attribute, textDB.value, textDB.reference)
def searchByID(self, textId):
"""
(Int) -> (Text)
"""
session = self.session_factory()
textDB = session.query(TextDB).get(textId)
return Text(textDB.id, textDB.language, textDB.tag, textDB.value,
textDB.description)
def codage_huffman(list_traite):
dictForHuffman = Text.getDictByASCII()
dictValues = list(dictForHuffman.values())
minProba = min(list(filter(lambda a: a != 0.0, dictValues)))
for key in dictForHuffman:
if dictForHuffman[key] == 0.0 or dictForHuffman[key] == 0:
dictForHuffman[key] = minProba
codage_huffman(dictForHuffman)
def searchByID(self, textId):
"""
(Int) -> (Text)
"""
session = self.session_factory()
textDB = session.query(TextDB).get(textId)
return Text(textDB.id, textDB.language, textDB.plant, textDB.status,
textDB.attribute, textDB.value, textDB.reference)
def search(self, text=Text(), pageSize=10, offset=0):
"""
(Text, pageSize, offset) -> [Text]
"""
session = self.session_factory()
query = session.query(TextDB).filter(
and_(TextDB.language.like('%' + text.language + '%'),
TextDB.tag.like('%' + text.tag + '%'),
TextDB.value.like('%' + text.value + '%'),
TextDB.description.like('%' + text.description + '%')))
content = query.slice(offset, pageSize).all()
total = query.count()
texts = []
for textDB in content:
texts.append(
Text(textDB.id, textDB.language, textDB.tag, textDB.value,
textDB.description))
return {'total': total, 'content': texts}
def search(self, text=Text(), pageSize=10, offset=0):
"""
(Text, pageSize, offset) -> [Text]
"""
session = self.session_factory()
query = session.query(TextDB).filter(
and_(TextDB.language.like('%' + text.language + '%'),
TextDB.plant.like('%' + text.plant + '%'),
TextDB.status.like('%' + text.status + '%'),
TextDB.attribute.like('%' + text.attribute + '%'),
TextDB.value.like('%' + text.value + '%'),
TextDB.reference.like('%' + text.reference + '%')))
content = query.slice(offset, pageSize).all()
total = query.count()
texts = []
for textDB in content:
texts.append(
Text(textDB.id, textDB.language, textDB.plant, textDB.status,
textDB.attribute, textDB.value, textDB.reference))
return {'total': total, 'content': texts}
def delete(self, text=Text()):
"""
(Text) -> (bool)
Delete database text
"""
status = False
session = self.session_factory()
textDB = session.query(TextDB).filter_by(id=text.id).first()
session.delete(textDB)
session.commit()
session.flush()
if (not session.query(TextDB).filter_by(id=textDB.id).count()):
status = True
session.close()
return status
def update(self, text=Text()):
"""
(Text) -> (Text)
Update database text
"""
session = self.session_factory()
textDB = session.query(TextDB).filter_by(id=text.id).first()
dic = {}
if (textDB.language != text.language):
dic['language'] = text.language
if (textDB.tag != text.tag):
dic['tag'] = text.tag
if (textDB.value != text.value):
dic['value'] = text.value
if (textDB.description != text.description):
dic['description'] = text.description
if (dic != {}):
session.query(TextDB).filter_by(id=text.id).update(dic)
session.commit()
session.flush()
session.refresh(textDB)
return Text(textDB.id, textDB.language, textDB.tag, textDB.value,
textDB.description)
dictForHuffman = Text.getDictByASCII()
dictValues = list(dictForHuffman.values())
minProba = min(list(filter(lambda a: a != 0.0, dictValues)))
for key in dictForHuffman:
if dictForHuffman[key] == 0.0 or dictForHuffman[key] == 0:
dictForHuffman[key] = minProba
codage_huffman(dictForHuffman)
def codage_arithmetique(dict_pixel_proba, list_length):
pass
if __name__ == '__main__':
# transform text to ascii
Text.transformationText()
# genere 3 dictionnaire en fonction des unigramme, digramme et trigramme
dicoUnigram = Text.generer_dico_ngramme(1)
dicoDigram = Text.generer_dico_ngramme(2)
dicoTrigram = Text.generer_dico_ngramme(3)
print(len(dicoUnigram))
print(len(dicoDigram))
print(len(dicoTrigram))
# associe un byte à un n_gramme dans un nouveau dictionnaire
dicoNgram = Text.creerDictionnaire(dicoUnigram, dicoDigram[:100],
dicoTrigram[:98])
print(len(dicoNgram))
finalDictionnary = Text.generateByteList(dicoNgram)
print(finalDictionnary)
newText = Text.encode(finalDictionnary)