On November 5, 2018 at 10:27:48 AM, Andy Bunce (bunce.andy@gmail.com) wrote:

Hi Ron,

I took a quick look at Joe's module and made the following changes:

1. Change datetime:format-date(..,"yyyy-MM-dd") to format-date(..,"[YYYY]-[MM]-[DD]")
2. Change xdt:dayTimeDuration("P1D") -> xs:dayTimeDuration
3. Change function in namespace local: to dates:
   

And saved as a gist [1]. Then in BaseX

import module namespace dates = "http://xqdev.com/dateparser" at "https://gist.githubusercontent.com/apb2006/ee0effdd53ca80daf4f1b3e99794ed89/raw/7eedb8343c3cbf0e4ef0063be5af532e8bbfe485/date-parser.xqm";

dates:parseDate("March 2017")

Returns

<date resolution="month">
  <range>
    <start>2017-03-01</start>
    <end>2017-03-31</end>
  </range>
  <value>2017-03-01</value>
</date>

Joe,

I think all these changes are compatible with eXist too? [2]

Hope this helps.

/Andy

[1] https://gist.github.com/apb2006/ee0effdd53ca80daf4f1b3e99794ed89

[2] https://sourceforge.net/p/exist/mailman/message/34988159/

On Mon, 5 Nov 2018 at 02:03, Ron Katriel <rkatriel@mdsol.com> wrote:

Hi Joe,

Thanks for sharing that. I tried adapting your eXist port to BaseX and ran into issues with namespaces. At this point I don’t have the time or expertise to complete this but hopefully someone else will take up the challenge.

Best,

Ron

On November 3, 2018 at 12:19:49 AM, Joe Wicentowski (joewiz@gmail.com) wrote:

Hi Ron,

You might find Ryan Grimm's date-parser library module useful if you have a larger range of date formats to handle:

  https://github.com/marklogic-community/commons/blob/master/dates/date-parser.xqy

While it was written with some MarkLogic-specific code, I adapted it for use with eXist (but haven't tested it with BaseX):

  https://github.com/HistoryAtState/twitter/blob/master/modules/date-parser.xqm

Best,

Joe

On Fri, Nov 2, 2018 at 6:48 PM Ron Katriel <rkatriel@mdsol.com> wrote:

Hi Christian,

Much appreciated! I hardened the code (see below) since the dates (from CT.gov) occasionally also have the day of the month (e.g., “March 21, 2014”). Currently the function is dropping the day in such cases but I will look into capturing it in a future iteration.

Best,

Ron

declare function local:to-date($string) {

  if (fn:matches($string, '[A-Za-z]+ [0-9]+') or fn:matches($string, '[A-Za-z]+ [0-9]+, [0-9]+'))

  then

  let $m := index-of($MONTHS, substring-before($string, ' '))

  let $y := xs:integer(functx:substring-after-last($string, ' '))

  return xs:date(string-join(

    (

      format-number($y, '0000'),

      format-number($m, '00'),

      '01'

    ),

    '-')

  )

  else

  ()

};

On November 2, 2018 at 4:20:41 PM, Christian Grün (christian.gruen@gmail.com) wrote:

Hi Ron,

If your timestamp is available in IETF format, you can use
fn:parse-ietf-date [1]. Otherwise, you’ll need to write a simple
function by yourself:

declare variable $MONTHS := (
'January', 'February', 'March', 'April', 'May', 'June',
'July', 'August', 'September', 'October', 'November', 'December'
);

declare function local:to-date($string) {
let $m := index-of($MONTHS, substring-before($string, ' '))
let $y := xs:integer(substring-after($string, ' '))
return xs:date(string-join((
format-number($y, '0000'),
format-number($m, '00'),
'01'
), '-'))
};
local:to-date('March 2017')

Best,
Christian

[1] https://urldefense.proofpoint.com/v2/url?u=https-3A__www.w3.org_TR_xpath-2Dfunctions-2D31_-23func-2Dparse-2Dietf-2Ddate&d=DwIFaQ&c=fi2D4-9xMzmjyjREwHYlAw&r=44jDQvzmnB_-ovfO6Iusj0ItciJrcWMOQQwd2peEBBE&m=Yy9sC1xS_Ix-pGSVDp-Lbmz8BOft0S1WdVpEM-qzRw4&s=uQ3NqCv8FpHulP4q1arjItJX3-gCHwi_06WN4znRz48&e=



On Fri, Nov 2, 2018 at 9:09 PM Ron Katriel <rkatriel@mdsol.com> wrote:
>
> Hi,
>
> Is there a BaseX function for converting a string date in the form of “March 2017” to xs:date or xs:dateTime?
>
> Thanks,
> Ron