Re: matcher is failing

Correction: this is my code...

else if ( candidate =~
/^(?:0?[1-9]|[12]\d|3[01])[\\\-\\\/]+(\d{2}|\d{1})[\\\-\\\/]+(\d{4}|\d{2})$/
) {

              log.error("BINGO!")

              matcher = candidate =~
/^(?:0?[1-9]|[12]\d|3[01])[\\\-\\\/]+(\d{2}|\d{1})[\\\-\\\/]+(\d{4}|\d{2})$/
              matchedSubstring = matcher[0][0]
              log.error("Matcher: ${matcher.toString()}")
              log.error("Matched substring: ${matchedSubstring}")
              day = matchedSubstring[matcher[0][1]]
              month = matchedSubstring[matcher[0][2]]
              year = matcherSubstriong[matcher[0][3]]

              log.error("Day: ${day}")
              log.error("Month: ${month}")
              log.error("Year: ${year}")

              log.error("Length of Day: ${day.length()}")
              log.error("Length of Month: ${month.length()}")
              log.error("Length of Year: ${year.length()}")

           }

I suspect I need to look at how I'm setting day, month, and year from
matcher.

The log output:
2023-07-09 16:04:47,406 ERROR [Timer-Driven Process Thread-10]
o.a.nifi.processors.script.ExecuteScript
ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Candidate: 06-14-2023
2023-07-09 16:04:47,406 ERROR [Timer-Driven Process Thread-10]
o.a.nifi.processors.script.ExecuteScript
ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] BINGO!
2023-07-09 16:04:47,406 ERROR [Timer-Driven Process Thread-10]
o.a.nifi.processors.script.ExecuteScript
ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Matcher:
java.util.regex.Matcher[pattern=^(?:0?[1-9]|[12]\d|3[01])[\\\-\\/]+(\d{2}|\d{1})[\\\-\\/]+(\d{4}|\d{2})$
region=0,10 lastmatch=06-14-2023]
2023-07-09 16:04:47,406 ERROR [Timer-Driven Process Thread-10]
o.a.nifi.processors.script.ExecuteScript
ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Matched substring:
06-14-2023
2023-07-09 16:04:47,406 ERROR [Timer-Driven Process Thread-10]
o.a.nifi.processors.script.ExecuteScript
ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Could not parse:
06-14-2023

On Sun, Jul 9, 2023 at 11:59 AM James McMahon <[email protected]> wrote:

> Hello. I have a conditional clause in my Groovy script that attempts to
> parse a date pattern of this form: 06-14-2023. It fails - I believe in the
> matcher.
>
> I am running from a NiFi ExecuteScript processor. Here is my conditional:
>
>               } else if ( candidate =~
> /^(?:0?[1-9]|[12]\d|3[01])[\\\-\\\/]+(\d{2}|\d{1})[\\\-\\\/]+(\d{4}|\d{2})$/
> ) {
>
>               log.error("BINGO!")
>
>               matcher = candidate =~
> /^(?:0?[1-9]|[12]\d|3[01])[\\\-\\\/]+(\d{2}|\d{1})[\\\-\\\/]+(\d{4}|\d{2})$/
>               log.error("Matcher: ${matcher.toString()}")
>               log.error("Matched substring: ${matchedSubstring}")
>               day = matchedSubstring[matcher[0][1]]
>               month = matchedSubstring[matcher[0][2]]
>               year = matcherSubstriong[matcher[0][3]]
>
>               log.error("Day: ${day}")
>               log.error("Month: ${month}")
>               log.error("Year: ${year}")
>
>               log.error("Length of Day: ${day.length()}")
>               log.error("Length of Month: ${month.length()}")
>               log.error("Length of Year: ${year.length()}")
>
>            }
>
> My log output tells me I make it into the conditional, but then I fail on
> the matcher:
>
> 2023-07-09 15:52:23,547 ERROR [Timer-Driven Process Thread-2]
> o.a.nifi.processors.script.ExecuteScript
> ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Candidate: 06-14-2023
> 2023-07-09 15:52:23,547 ERROR [Timer-Driven Process Thread-2]
> o.a.nifi.processors.script.ExecuteScript
> ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] BINGO!
> 2023-07-09 15:52:23,547 ERROR [Timer-Driven Process Thread-2]
> o.a.nifi.processors.script.ExecuteScript
> ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Matcher:
> java.util.regex.Matcher[pattern=^(?:0?[1-9]|[12]\d|3[01])[\\\-\\/]+(\d{2}|\d{1})[\\\-\\/]+(\d{4}|\d{2})$
> region=0,10 lastmatch=]
> 2023-07-09 15:52:23,547 ERROR [Timer-Driven Process Thread-2]
> o.a.nifi.processors.script.ExecuteScript
> ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Matched substring:
> *null*
> 2023-07-09 15:52:23,547 ERROR [Timer-Driven Process Thread-2]
> o.a.nifi.processors.script.ExecuteScript
> ExecuteScript[id=33a5179c-1df4-128b-52be-aaa96b947012] Could not parse:
> 06-14-2023
>
> Can anyone help me get this matcher to work?
>
> Thanks in advance for any help.
>
> Jim
>