`jt/as` fn seems to be broken
marksto opened this issue · 1 comments
marksto commented
Hi @frenchy64 and thank you for this classy Java Time wrapper lib!
Alas, it looks like jt/as doesn't work (or, probably, my expectations about it are wrong):
(require '[java-time.api :as jt])
(def ldt (jt/local-date-time))
(clojure.java.data/from-java ldt)
=>
{:nano 410904000,
:hour 17,
:second 46,
:monthValue 4,
:month "APRIL",
:dayOfMonth 16,
:year 2024,
:dayOfWeek "TUESDAY",
:dayOfYear 107,
:minute 22}
(jt/as ldt :year) ; this one mysteriously works
=> 2024
(jt/as ldt :month)
Execution error (DateTimeException) at java-time.temporal/eval31584$fn (temporal.clj:186).
Property :month doesn't exist in [2024-04-16T17:22:46.410904]!
(jt/as ldt :months)
Execution error (DateTimeException) at java-time.temporal/eval31584$fn (temporal.clj:186).
Property :months doesn't exist in [2024-04-16T17:22:46.410904]!
The same is true for a zoned date-time:
(require '[java-time.api :as jt])
(def zdt (jt/zoned-date-time ldt "UTC"))
(clojure.java.data/from-java zdt)
=>
{:nano 410904000,
:hour 17,
:second 46,
:offset {:id "Z", :rules {:fixedOffset true, :transitionRules (), :transitions ()}, :totalSeconds 0},
:zone {:id "UTC", :rules {:fixedOffset true, :transitionRules (), :transitions ()}},
:monthValue 4,
:month "APRIL",
:dayOfMonth 16,
:year 2024,
:dayOfWeek "TUESDAY",
:dayOfYear 107,
:minute 22}
(jt/as zdt :year) ; this one mysteriously works
=> 2024
(jt/as zdt :second)
Execution error (DateTimeException) at java-time.temporal/eval31584$fn (temporal.clj:186).
Property :second doesn't exist in [2024-04-16T17:22:46.410904Z[UTC]]!
A documentation of the jt/as fn is scarce and doesn't give any examples with date-times.
However, it states that the first argument is a "temporal entity", which dates-times definitely are.
Would be nice to hear your thoughts.
marksto commented
Ok, I've figured this out after more carefully reading the relevant README section and playing in REPL for a bit.
(jt/as (jt/local-date-time) :hour-of-day :minute-of-hour :second-of-minute)
=> [18 17 19]
Life is great again.