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