You have changed the first grouping into a non-capture group with ?:, so
matcher[0][3] will be null, and matcher[0][1] will be the month and
matcher[0][2] will be the year.
I also believe that you should be able to reduce [\\\-\\\/] to be simply [-\/]
because of using slashy-string for the regex (as only forward slash needs to be
escaped)
-Spencer
On Sunday, July 9, 2023 at 12:08:17 PM EDT, James McMahon
<jsmcmah...@gmail.com> wrote:
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 <jsmcmah...@gmail.com> 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
