Here is my JSON file:
[{
"name": "chetan",
"age": 23,
"hobby": ["cricket", "football"]
}, {
"name": "raj",
"age": 24,
"hobby": ["cricket", "golf"]
}]
Here is the golang code I tried but didn't work as expected.
id:= "ket"
c.EnsureIndexKey("hobby")
err = c.Find(bson.M{"$hobby": bson.M{"$search": id,},}).All(&result)
It gives error:
$hobby exit status 1
From $search I'm assuming you're trying to use a text index/search, but in your case that wouldn't work. Text index doesn't support partials. You can still use regex to find those documents, but performance wise it wouldn't be a wise choice probably, unless you can utilize the index - which in your case wouldn't happen.
Still, you could achieve what you want with:
id := "ket"
regex := bson.M{"$regex": bson.RegEx{Pattern: id}}
err = c.Find(bson.M{"hobby": regex}).All(&result)
Related
I am trying to write a rule but am running into an issue. I managed to extract the following from as my input:
myData:= [{"Key": "use", "Value": "1"}, {"Key": "use", "Value": "2"}, {"Key": "att1", "Value": "3"}]
I am trying to count the amount of times a key with the value use appears. However when I do:
p := {keep| keep:= myData[_]; myData.Key == "use"}
I assumed this would create a listing of all I would like to keep but the playground errors with:
1 error occurred: policy.rego:24: rego_type_error: undefined ref: data.play.myData.Key
data.play.myData.Key
I hoped I could list them in p and then do count(p) > 1 to check if more that one is listed.
In your set comprehension for p, you're iterating over the objects in myData, assigning each element to keep. Then, you assert something on myData.Key. I think what you're looking for is
p := {keep| keep := myData[_]; keep.Key == "use"}
Be aware that it's a set comprehension, so p would be the same for these two inputs:
myData:= [{"Key": "use", "Value": "1"}]
myData:= [{"Key": "use", "Value": "1"}, {"Key": "use", "Value": "1"}]
You could use an array comprehension (p := [ keep | keep := ... ]) if that's not what you want.
I have a list of dictionaries with each entry having the following structure
{
"id": 0,
"type": "notification",
"name": "jane doe",
"loc": {
"lat": 38.8239,
"long": 104.7001
},
"data": [
{
"type": "test",
"time": "Fri Aug 13 09:17:16 2021",
"df": 80000000,
"db": 1000000,
"tp": 92
},
{
"type": "real",
"time": "Sat Aug 14 09:21:30 2021",
"df": 70000000,
"db": 2000000,
"tp:": 97
}
]
}
I need to be able to sort this list by any of these keys: name, type, time, tp and return it in memory.
I understand how to sort by the top level keys sorted(json_list, key=lambda k:k['name']) or even nested keys. For instance by lat sorted(json_list, key=lambda k:k['loc']['lat'])
so currently I have a function that works for the case when sorting by name.
def sort_by(self, param, rev=False):
if param == NAME:
self.json_list = sorted(self.json_list, key=lambda k: k[param], reverse=rev)
else:
# need help here
I'm having trouble sorting by type, time, and tp. Notice the data key is also a list of dictionaries. I would like to leverage existing methods built into the standard lib if possible. I can provide more clarification if necessary
Update:
def sort_by(self, param, rev=False):
if param == NAME:
self.json_list = sorted(self.json_list, key=lambda k: k[param], reverse=rev)
else:
self.json_list = sorted(self.json_list, key=lambda k: k['data'][0][param], reverse=rev)
return self.json_list
This works fine if there is only one item in the data list
If json_list[i]['data'] (for each i) only contains one dict, then the following should work; otherwise modifications are required.
sorted(json_list, key = lambda k: (
k['name'], k['data']['type'], k['data']['time'], k['data']['tp']
))
I'm new to ruby so please excuse any ignorance I may bear. I was wondering how to parse a JSON reponse for every value belonging to a specific key. The response is in the format,
[
{
"id": 10008,
"name": "vpop-fms-inventory-ws-client",
"msr": [
{
"key": "blocker_violations",
"val": 0,
"frmt_val": "0"
},
]
},
{
"id": 10422,
"name": "websample Maven Webapp",
"msr": [
{
"key": "blocker_violations",
"val": 0,
"frmt_val": "0"
}...
There's some other entries in the response, but for the sake of not having a huge block of code, I've shortened it.The code I've written is:
require 'uri'
require 'net/http'
require 'JSON'
url = URI({my url})
http = Net::HTTP.new(url.host, url.port)
request = Net::HTTP::Get.new(url)
request["cache-control"] = 'no-cache'
request["postman-token"] = '69430784-307c-ea1f-a488-a96cdc39e504'
response = http.request(request)
parsed = response.read_body
h = JSON.parse(parsed)
num = h["msr"].find {|h1| h1['key']=='blocker_violations'}['val']
I am essentially looking for the val for each blocker violation (the json reponse contains hundreds of entries, so im expecting hundreds of blocker values). I had hoped num would contain an array of all the 'val's. If you have any insight in this, it would be of great help!
EDIT! I'm getting a console output of
scheduler caught exception:
no implicit conversion of String into Integer
C:/dashing/test_board/jobs/issue_types.rb:20:in `[]'
C:/dashing/test_board/jobs/issue_types.rb:20:in `block (2 levels) in <top (requi
red)>'
C:/dashing/test_board/jobs/issue_types.rb:20:in `select'
I suspect that might have too much to do with the question, but some help is appreciated!
You need to do 2 things. Firstly, you're being returned an array and you're only interested in a subset of the elements. This is a common pattern that is solved by a filter, or select in Ruby. Secondly, the condition by which you wish to select these elements also depends on the values of another array, which you need to filter using a different technique. You could attempt it like this:
res = [
{
"id": 10008,
"name": "vpop-fms-inventory-ws-client",
"msr": [
{
"key": "blocker_violations",
"val": 123,
"frmt_val": "0"
}
]
},
{
"id": 10008,
"name": "vpop-fms-inventory-ws-client",
"msr": [
{
"key": "safe",
"val": 0,
"frmt_val": "0"
}
]
}
]
# define a lambda function that we will use later on to filter out the blocker violations
violation = -> (h) { h[:key] == 'blocker_violations' }
# Select only those objects who contain any msr with a key of blocker_violations
violations = res.select {|h1| h1[:msr].any? &violation }
# Which msr value should we take? Here I just take the first.
values = violations.map {|v| v[:msr].first[:val] }
The problem you may have with this code is that msr is an array. So theoretically, you could end up with 2 objects in msr, one that is a blocker violation and one that is not. You have to decide how you handle that. In my example, I include it if it has a single blocker violation through the use of any?. However, you may wish to only include them if all msr objects are blocker violations. You can do this via the all? method.
The second problem you then face is, which value to return? If there are multiple blocker violations in the msr object, which value do you choose? I just took the first one - but this might not work for you.
Depending on your requirements, my example might work or you might need to adapt it.
Also, if you've never come across the lambda syntax before, you can read more about it here
I have a JSON like this:
[
{
"Low": 8.63,
"Volume": 14211900,
"Date": "2012-10-26",
"High": 8.79,
"Close": 8.65,
"Adj Close": 8.65,
"Open": 8.7
},
{
"Low": 8.65,
"Volume": 12167500,
"Date": "2012-10-25",
"High": 8.81,
"Close": 8.73,
"Adj Close": 8.73,
"Open": 8.76
},
{
"Low": 8.68,
"Volume": 20239700,
"Date": "2012-10-24",
"High": 8.92,
"Close": 8.7,
"Adj Close": 8.7,
"Open": 8.85
}
]
And have calculated a simple moving average for each day of the closing prices and called it a variable sma9day. I'd like to join the moving average values with the original JSON, so I get something like this for each day:
{
"Low": 8.68,
"Volume": 20239700,
"Date": "2012-10-24",
"High": 8.92,
"Close": 8.7,
"Adj Close": 8.7,
"Open": 8.85,
"SMA9": 8.92
}
With the sma9day variable I did this:
h = { "SMA9" => sma9day }
sma9json = h.to_json
puts sma9json
which outputs this:
{"SMA9":[8.92,8.93,8.93]}
How do I put it in a compatible format with the JSON and join the two? I'll need to "match/join" from the top down, as the last 8 records in the JSON will not have 9 day moving average values (in these cases I'd still like the key to be there (SMA9), but have nil or zero as the value.
Thank you.
LATEST UPDATE:
I now have this, which gets me very close, however it returns the entire string in the SMA9 field in the JSON...
require json
require simple_statistics
json = File.read("test.json")
quotes = JSON.parse(json)
# Calculations
def sma9day(quotes, i)
close = quotes.collect {|quote| quote['Close']}
sma9day = close.each_cons(9).collect {|close| close.mean}
end
quotes = quotes.each_with_index do |day, i|
day['SMA9'] = sma9day(quotes, i)
end
p quotes[0]
=> {"Low"=>8.63, "Volume"=>14211900, "Date"=>"2012-10-26", "High"=>8.79, "Close"=>8.65, "Adj Close"=>8.65, "Open"=>8.7, "SMA9"=>[8.922222222222222, 8.93888888888889, 8.934444444444445, 8.94222222222222, 8.934444444444445, 8.937777777777777, 8.95, 8.936666666666667, 8.924444444444443, 8.906666666666666, 8.912222222222221, 8.936666666666666, 8.946666666666665, 8.977777777777778, 8.95111111111111, 8.92, 8.916666666666666]}
When I try to do sma9day.round(2) before the end of the calculations, it gives a method error (presumably because of the array?), and when I did sma9day[0].round(2), it does correctly round, but every record has the same SMA of course.
Any help is appreciated. Thanks
Presumably to do the calculation in ruby, you somehow parsed the json, and got a ruby Hash out of it.
To get this straight, you have an array of sma9day values, and an array of objects, and you want to iterate through them.
To do that, something like this should get you started:
hashes = JSON.parse( json )
sma9day_values = [9.83, 9.82, etc... ]
hashes.each_with_index do |hash, index|
if index >= 9
hash["SMA9"] = sma9day_values[index-9]
else
hash["SMA9"] = 0
end
end
puts hashes.to_json
Edit:
You really need to try a beginning ruby tutorial. The problem is that you are calling round(2) on an array. The variable i in the sma9day(quotes, i) function is not used (hint). Maybe try something like sma9day[i].round(2)
Also the return of each_with_index is not something to assign. Dont do that, just call each_with_index on an array. I.e.
quotes = quotes.each_with_index do |day, i| #bad
quotes.each_with_index do |day, i| #good
I took your input and compiled a solution in this gist. I hope it helps.
I'm new to Ruby and had a question. I'm trying to create a .rb file that converts JSON to CSV.
I came across some disparate sources that got me to make:
require "rubygems"
require 'fastercsv'
require 'json'
csv_string = FasterCSV.generate({}) do |csv|
JSON.parse(File.open("small.json").read).each do |hash|
csv << hash
end
end
puts csv_string
Now, it does in fact output text but they are all squashed together without spaces, commas etc. How do I make it more customised, clear for a CSV file so I can export that file?
The JSON would look like:
{
"results": [
{
"reportingId": "s",
"listingType": "Business",
"hasExposureProducts": false,
"name": "Medeco Medical Centre World Square",
"primaryAddress": {
"geoCodeGranularity": "PROPERTY",
"addressLine": "Shop 9.01 World Sq Shopng Cntr 644 George St",
"longitude": "151.206172",
"suburb": "Sydney",
"state": "NSW",
"postcode": "2000",
"latitude": "-33.876416",
"type": "VANITY"
},
"primaryContacts": [
{
"type": "PHONE",
"value": "(02) 9264 8500"
}
]
},xxx
}
The CSV to just have something like:
reportingId, s, listingType, Business, name, Medeco Medical...., addressLine, xxxxx, longitude, xxxx, latitude, xxxx, state, NSW, postcode, 2000, type, phone, value, (02) 92648544
Since your JSON structure is a mix of hashes and lists, and also has levels of different heights, it is not as trivial as the code you show. However (assuming your input files always look the same) it shouldn't be hard to write an appropriate converter. On the lowest level, you can transform a hash to CSV by
hash.to_a.flatten
E.g.
input = JSON.parse(File.open("small_file.json").read)
writer = FasterCSV.open("out.csv", "w")
writer << input["results"][0]["primaryAddress"].to_a.flatten
will give you
type,VANITY,latitude,-33.876416,postcode,2000,state,NSW,suburb,Sydney,longitude,151.206172,addressLine,Shop 9.01 World Sq Shopng Cntr 644 George St,geoCodeGranularity,PROPERTY
Hope that guides you the direction.
Btw, your JSON looks invalid. You should change the },xxx line to }].