How to parse a date and time (timestamp) to query for a range with XML?

问题

this is a start:

> 
> XQUERY fn:parse-ietf-date('Tue, 18 Jun 2019 13:10:56 GMT')
2019-06-18T13:10:56Z
Query executed in 425.5 ms.
>

from the basex console. need to apply to the query for a searchable date. see also:

Inverse function to format-date

Google chat, or "hangouts" exports its data as JSON. The dates are in UTC as a String, looking at least similar to:

Thursday, 17-Dec-20 14:29:33 UTC in RFC 2822 https://www.unixtimestamp.com/

Assuming RFC 2822, or similar, then how would that String be imported or stored or translated as a Date "type" of "object"? In order to search by date.

Something like:

<xs:element name="start" type="xs:date"/>

or at least conforming to that schema. Not looking to validate the data per se, just search it. Such a namespace and type is, presumably, more easily searched.

importing the data (for context):

nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$ 
nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$ ls
group_info.json  import.xq  messages.json
nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$ 
nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$ cat import.xq 
let $database := "messages"
for $name in file:list('.', false(), '*.json')
let $file := file:read-text($name)
let $json := json:parse($file)
return db:add($database, $json, $name)

nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$ 
nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$ basex import.xq 
nicholas@mordor:~/Desktop/takeout-20201215T221239Z-001/Takeout/Hangouts Chat/Groups/e$

example output:

nicholas@mordor:~/flwor/hangouts$ 
nicholas@mordor:~/flwor/hangouts$ basex dates.xq 
<created__date>Thursday, 4 June 2020 at 13:27:14 UTC</created__date>nicholas@mordor:~/flwor/hangouts$ 
nicholas@mordor:~/flwor/hangouts$

which looks to be RFC 2822 formatted date String data. Here, one arbitrary date was output with:

let $database := db:open("messages")
let $date := $database/json/messages/_/created__date
return $date[33]

which is where the messages were imported to.

来源：https://stackoverflow.com/questions/65342726/how-to-parse-a-date-and-time-timestamp-to-query-for-a-range-with-xml

标签

json

xml

timestamp

xquery

flwor