I want to create equivalent CriteriaQuery to this query :
select u from User u where u.name = "John" and u.surname = "Black" and u.middlename = "Small";
but I have problem with "where" predicate.
Thanks
You can use:
CriteriaBuilder builder = entityManager.getCriteriaBuilder();
CriteriaQuery c = ...;
Root root = ...;
Predications name = builder.equal(root.get("name"), name);
Predications surname = ...;
Predications middlename = ...;
c.where(name, surname, middlename);
Related
I want an equivalent of this sql query in Django
SELECT Gender, ServCode
FROM [openimisproductTestDb_16_08_22].[dbo].[tblInsuree]
JOIN [openimisproductTestDb_16_08_22].[dbo].[tblServices] ON [openimisproductTestDb_16_08_22].[dbo].[tblInsuree].AuditUserID = [openimisproductTestDb_16_08_22].[dbo].[tblServices].AuditUserID
WHERE Gender = 'F'
AND ServCode = 'F4'
What I have tried:
def assisted_birth_with_cs_query(user, **kwargs):
date_from = kwargs.get("date_from")
date_to = kwargs.get("date_to")
hflocation = kwargs.get("hflocation")
format = "%Y-%m-%d"
date_from_object = datetime.datetime.strptime(date_from, format)
date_from_str = date_from_object.strftime("%d/%m/%Y")
date_to_object = datetime.datetime.strptime(date_to, format)
date_to_str = date_to_object.strftime("%d/%m/%Y")
dictBase = {
"dateFrom": date_from_str,
"dateTo": date_to_str,
}
dictGeo = {}
if hflocation and hflocation!="0" :
hflocationObj = HealthFacility.objects.filter(
code=hflocation,
validity_to__isnull=True
).first()
dictBase["fosa"] = hflocationObj.name
claimItem = Insuree.objects.filter(
validity_from__gte = date_from,
validity_to__lte = date_to,
**dictGeo,
gender = 'F'
).count()
data = Service.objects.filter(code = 'F4').count() | Insuree.objects.filter(gender = 'F').count()
dictGeo['health_facility'] = hflocationObj.id
dictBase["post"]= str(data)
return dictBase
I tried like that but the one just adds when I want the women included in the insured table and the F4 code contained in the service table. both tables have the auditUserID column in common
It would be great if you could add the models to better see the relations between Insuree and Service. Assuming it's a 1-M, I'd go with this query:
Service.objects.filter(code='F4', insuree__gender='F').count()
Please need help with the following
I am trying to update database in comparison to previous uploaded csv file. I need to update all fields except the vin if it changes (vin is the unique value), delete the item if it is no longer in the csv file and create one if one is new
vin. stock_no make model trim miles
12345789098765432 4535 honda civic lx 89000
j4j4jj49098765432 3453 toyota corolla DX 54555
12345345438765432 6254 ford mustang es 101299
When I change any value and the csv is uploaded it makes a duplicate:
def upload_file__view(request):
form = form(request.POST or None, request.FILES or
None)
company = Comp_info.objects.last()
if form.is_valid():
form.save()
obj = c.objects.get(activated=False)
with open(obj.file_name.path, 'r+') as f:
reader = c.reader(f)
for i, row in enumerate(reader):
if i==0:
pass
else:
# row = "".join(row)
# row = row.replace(",", " ")
# row = row.split()
print(row)
print(type(row))
vin = row[0].upper()
condition = row[1].replace("U", "Used").replace("N", "New")
stock_no = row[2]
year = int(row[5])
make = row[3]
model = row[4]
trim = row[6]
mileage = row[8]
mpg_city = row[18]
mpg_hwy = row[19]
engine = row[9]
transmission = row[12]
fuel_type = row[11]
vehicle_type = row[7]
drive_type = row[20].replace("4X2", "2WD").replace("4X4", "4WD")
exterior_color = row[15]
interior_color = row[16]
price = row[13].replace("0", "")
description = row[22]
features_2 = row[21]
images_data = row[23]
raw_images_list = images_data.split(',')
images_list = [""] * 25
for x in range(image_count):
if x == 25:
break
images_list[x] = raw_images_list[x]
for x in images_list:
print(x)
if images_list[0] == "":
images_list[0] = "https://www.beverlyhillscarclub.com/template/images/ina_f.jpg"
car_photo = images_list[0]
car_photo_1 = images_list[1]
car_photo_2 = images_list[2]
car_photo_3 = images_list[3]
car_photo_4 = images_list[4]
car_photo_5 = images_list[5]
car_photo_6 = images_list[6]
car_photo_7 = images_list[7]
car_photo_8 = images_list[8]
car_photo_9 = images_list[9]
car_photo_10 = images_list[10]
car_photo_11 = images_list[11]
car_photo_12 = images_list[12]
car_photo_13 = images_list[13]
car_photo_14 = images_list[14]
car_photo_15 = images_list[15]
car_photo_16 = images_list[16]
car_photo_17 = images_list[17]
car_photo_18 = images_list[18]
car_photo_19 = images_list[19]
car_photo_20 = images_list[20]
car_photo_21 = images_list[21]
car_photo_22 = images_list[22]
car_photo_23 = images_list[23]
car_photo_24 = images_list[24]
# notes = pip._vendor.requests(images_list[0], stream=True)
#car_photo = row[23]
# user = User.objects.get(username=row[3])
Cars.objects.update_or_create(
vin = vin,
condition = condition,
stock_no = stock_no,
year = year,
make = make,
model = model,
trim = trim,
mileage = mileage,
mpg_city = mpg_city,
engine = engine,
transmission = transmission,
fuel_type = fuel_type,
vehicle_type = vehicle_type,
drive_type = drive_type,
exterior_color = exterior_color,
interior_color = interior_color,
price = price,
description = description,
company_name = company.company_name,
address = company.company_address,
city = company.city,
state = company.state,
zip = company.zip_code,
phone_number = company.phone_number,
email = company.fax_number,
features_2 = features_2,
car_photo = downloadFile(car_photo),
car_photo_1 = downloadFile(car_photo_1),
car_photo_2 = downloadFile(car_photo_2),
car_photo_3 = downloadFile(car_photo_3),
car_photo_4 = downloadFile(car_photo_4),
car_photo_5 = downloadFile(car_photo_5),
car_photo_6 = downloadFile(car_photo_6),
car_photo_7 = downloadFile(car_photo_7),
car_photo_8 = downloadFile(car_photo_8),
car_photo_9 = downloadFile(car_photo_9),
car_photo_10 = downloadFile(car_photo_10),
car_photo_11 = downloadFile(car_photo_11),
car_photo_12 = downloadFile(car_photo_12),
car_photo_13 = downloadFile(car_photo_13),
car_photo_14 = downloadFile(car_photo_14),
car_photo_15 = downloadFile(car_photo_15),
car_photo_16 = downloadFile(car_photo_16),
car_photo_17 = downloadFile(car_photo_17),
car_photo_18 = downloadFile(car_photo_18),
car_photo_19 = downloadFile(car_photo_19),
car_photo_20 = downloadFile(car_photo_20),
car_photo_21 = downloadFile(car_photo_21),
car_photo_22 = downloadFile(car_photo_22),
car_photo_23 = downloadFile(car_photo_23),
car_photo_24 = downloadFile(car_photo_24)
#car_photo = car_photo,
# quantity = int(row[2]),
# salesman = user
)
obj.activated = True
obj.save()
data = {
'form' : form,
'now' : now,
}
return render(request, 'uploads.html', data)
Thanks in advance for any help!
Thank you
Step 1
An empty list was created to compare with uploaded data:
imported_cars = []
Step 2
Created a filter of unique value (primary Key) and checked if it existed and used the method get to update items. Created car (item variable) to update or create ubject.
if Cars.objects.filter(vin=vin).exists():
car = Cars.objects.get(vin=vin)
Step 3
Used else statement to create item if it did not exist.
else:
car = Cars.objects.create(vin=vin, condition=condition...)
Last, out of the loop populated empty list with updated and created cars and deleted items that were in the database but not in the csv file.
imported_cars_vin_numbers = [car.vin for car in imported_cars]
for car in Cars.objects.all():
if car.vin not in imported_cars_vin_numbers:
car.delete()
Special thanks and credit to Zack Plauché who was extremely helpful and professional in helping me and teaching me how to solve this issue.
Your issue is in the model.py
you should write the Cars object with the following.
vin = models.CharField(primary_key=True, editable=False)
Confirm this works, since I am suggesting solution without actually seeing the model.py
This should handle the update aspect of your logic. The part where you delete a vin if its not in the CSV will have to be done with new process I don't see written here.But a suggestion would be to clear the DB and repopulate, or create function that compares DB with CSV and delete object if not in CSV.
I am trying to generate a result that satisfies with the filter query below:
indicators = request.GET.getlist('indicators[]')
fmrprofiles = FMRPriority.objects.all()
q_objects = Q()
obj_filters = []
for indicator in indicators:
split_i = indicator.split('_')
if len(split_i) == 5:
if not any(d['indicator'] == split_i[1] for d in obj_filters):
obj_filters.append({
'indicator': split_i[1],
'scores': []
})
for o in obj_filters:
if split_i[1] == o['indicator']:
o['scores'].append(int(split_i[4]))
for obj in obj_filters:
print (obj['scores'])
q_objects.add(Q(pcindicator__id = int(obj['indicator'])) & Q(score__in=obj['scores']), Q.AND)
print (q_objects)
fmrprofiles = fmrprofiles.values('fmr__id','fmr__road_name').filter(q_objects).order_by('-fmr__date_validated')
print (fmrprofiles.query)
Basically, indicators is a list e.g. ['indicator_1_scoring_1_5', 'indicator_1_scoring_1_4', 'indicator_2_scoring_2_5']
I wanted to filter FMRPriority with these following fields:
pcindicator
score
e.g. pcindicator is equal 1 and scores selected are 5,4..another selection pcindicator is equal to 2 and scores selected are 3.
The query q_objects.add(Q(pcindicator__id = int(obj['indicator'])) & Q(score__in=obj['scores']), Q.AND) returns empty set..i have tried also the raw sql, same result.
Model:
class FMRPriority(models.Model):
fmr = models.ForeignKey(FMRProfile, verbose_name=_("FMR Project"), on_delete=models.CASCADE)
pcindicator = models.ForeignKey(PCIndicator, verbose_name=_("Priority Indicator"), on_delete=models.PROTECT)
score = models.FloatField(_("Score"))
I solve this by using OR and count the occurrence of id then exclude those are not equal to the length of filters:
for obj in obj_filters:
print (obj['scores'])
q_objects.add(
(Q(fmrpriority__pcindicator__id = int(obj['indicator'])) & Q(fmrpriority__score__in=obj['scores'])), Q.OR
)
fmrprofiles = fmrprofiles.values(*vals_to_display).filter(q_objects).annotate(
num_ins=Count('id'),
...
)).exclude(
~Q(num_ins = len(obj_filters))
).order_by('rank','road_name')
i have a
class shop {
int id;
String name;
List<Product> products;
}
class Product {
int id;
String productName;
}
where each shop has his own products , how to merge all shops products in one list
how to create a List of all products
You can merge lists using + or the spread operator
Using the Addition Operator:
List<shop> shops = [shop1, shop2];
List<Product> products = shop1.products + shop2.products;
Using Spread Operator:
List<Product> products = [...shop1.products, ...shop2.products];
Edit
You would need to do it like this:
List<shop> shops = [shop1, shop2,...];
List<Product> mergedProducts = []
for(int i = 0; i < shops.length; i++){
mergedProducts = mergedProducts + shops[i].products;
}
You can simply merge Lists with + operator:
List<Product> list1 = ...;
List<Product> list2 = ...;
List<Product> list3 = ...;
List<Product> mergedList = list1 + list2 + list3;
Also, Dart 2.3 and higher supports spread operator, which can be used as follows:
List<Product> mergedList2 = [...list1, ...list2, ...list3];
For dynamic number of shops you can use basic forEach:
List<Shop> shops = ...;
List<Product> mergedList = List();
shops.forEach((shop) => mergedList.addAll(shop.products));
I think you're looking for the fold function. You can do it in 1 line.
List<Shop> shops = [shop1, shop2, shop3];
List<Product> allProducts = shops.fold<List<Product>>([], (productList, shop) => productList..addAll(shop.products));
Does anyone know how I get Django Filter build an OR statement? I'm not sure if I have to use the Q object or not, I thought I need some type of OR pipe but this doesn't seem right:
filter_mfr_method = request.GET.getlist('filter_mfr_method')
for m in filter_mfr_method:
designs = designs.filter(Q(mfr_method = m) | m if m else '')
# Or should I do it this way?
#designs = designs.filter(mfr_method = m | m if m else '')
I would like this to be:
SELECT * FROM table WHERE mfr_method = 1 OR mfr_method = 2 OR mfr_method = 3
EDIT: Here is what Worked
filter_mfr_method = request.GET.getlist('filter_mfr_method')
list = []
for m in filter_mfr_method:
list.append(Q(mfr_method = m))
designs = designs.filter(reduce(operator.or_, list))
What about:
import operator
filter_mfr_method = request.GET.getlist('filter_mfr_method')
filter_params = reduce(operator.or_, filter_mfr_method, Q())
designs = designs.filter(filter_params)
Something I used before:
qry = None
for val in request.GET.getlist('filter_mfr_method'):
v = {'mfr_method': val}
q = Q(**v)
if qry:
qry = qry | q
else:
qry = q
designs = designs.filter(qry)
That is taken from one of my query builders.