As a small note, according to http://clojure.org/reader, Clojure
keywords and symbols are allowed to contain only alphanumeric
characters, *, +, !, -, _, and ?. Spaces aren’t allowed, but the
keyword function allows them anyway because it doesn’t do any checking
for validity for performance. I’m told that it’s up to the programmer
to make sure that only valid keywords are created.
I agree that clojure.contrib.json should default to string keys,
because keywords are so limited. The thing is, when
clojure.contrib.json *does* convert JSON keys into Clojure keywords,
should it check for validity and fail when it cannot create a valid
keyword?
On Feb 27, 3:24 pm, MarkSwanson <mark.swanson...@gmail.com> wrote:
> Actually, I shouldn't have worded this as a json issue. It's really a
> core problem that keywords with spaces can't be serialized/
> deserialized.
> A keyword is basically a String, and the language definition does not
> preclude keywords from having spaces.
> (keyword "a b c") works, and so does (get m (keyword "a b c")) - on an
> appropriately created map
>
> Cheers.
>
> On Feb 27, 3:55 pm, MarkSwanson <mark.swanson...@gmail.com> wrote:
>
>
>
> > Hello,
>
> > Consider the following valid JSON:
>
> > Clojure=> (def mq "{\"Question one\":\"test\"}")
> > #'user/mq
> > Clojure=> (read-json mq)
> > {:Question one "test"}
>
> > So the default behaviour fails to work correctly for a common case.
>
> > The Clojure failure is not exactly obvious either:
>
> > (read-string (str mq))
>
> > request failed java.lang.RuntimeException:
> > java.lang.ArrayIndexOutOfBoundsException: 19
> > at clojure.lang.RT.readString(RT.java:1220)
> > at clojure.core$read_string__4163.invoke(core.clj:2517)
>
> > I also tried with print-dup and it fails the same way:
> > =>(def ms (new StringWriter))
> > =>(print-dup mq ms)
> > =>(. ms toString)
> > "#=(clojure.lang.PersistentArrayMap/create {:Question one \"test\"})"
> > =>(read-string (. ms toString))
> > #<CompilerException java.lang.RuntimeException:
> > java.lang.ArrayIndexOutOfBoundsException: 3 (REPL:65)>
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