On Fri, Oct 19, 2012 at 6:39 PM, larry google groups <
lawrencecloj...@gmail.com> wrote:
> >you have `username` a symbol as the key in your map, but you are
> >looking for `:username` they keyword as a key
>
> Ah, interesting, perhaps I tested this somewhere else. To be sure, I tried
> this again:
>
>
> (defn add-to-logged-in-registry [this-users-params]
> (let [right-now (. (Date.) getTime)
> new-user-entry (conj this-users-params { "updated" right-now })]
> (println apply str new-user-entry)
> (if-not (nil? (get new-user-entry "username"))
>
> (swap! registry assoc (:username new-user-entry) new-user-entry))))
>
also don't forget this here ^^^^
>
> And now I am back to the error I had before I had any if() statement, so
> now I think data is getting into registry. My problem with JSON must be
> elsewhere, but I don't understand what, exactly, the problem is.
>
> #<core$apply clojure.core$apply@2797fd81> #<core$str
> clojure.core$str@34902478> {updated 1350664352323, username Raer,
> first_name Raier, last_name Lis, user_image Raier_phptZ2nEJ.jpg, site
> www.javascriptquestions.com}
> 2012-10-19
> 12:32:32.324:WARN:oejs.AbstractHttpConnection:/?username=Raier&first_name=Raier&last_name=Lis&user_image=Raier_phptZ2nEJ.jpg&site=
> www.javascriptquestions.com
>
> java.lang.Exception: JSON object properties may not be nil
> at clojure.data.json$default_write_key_fn.invoke(json.clj:28)
> at clojure.data.json$write_object.invoke(json.clj:313)
> at clojure.data.json$fn__109$G__104__116.invoke(json.clj:279)
> at clojure.data.json$write.doInvoke(json.clj:423)
> at clojure.lang.RestFn.invoke(RestFn.java:425)
> at clojure.lang.AFn.applyToHelper(AFn.java:163)
> at clojure.lang.RestFn.applyTo(RestFn.java:132)
> at clojure.core$apply.invoke(core.clj:604)
> at clojure.data.json$write_str.doInvoke(json.clj:430)
> at clojure.lang.RestFn.invoke(RestFn.java:410)
> at who_is_logged_in.core$current_users.invoke(core.clj:43)
> at clojure.lang.AFn.applyToHelper(AFn.java:161)
> at clojure.lang.AFn.applyTo(AFn.java:151)
> at clojure.core$apply.invoke(core.clj:602)
> at net.cgrand.moustache$delegate$fn__397.invoke(moustache.clj:186)
> at who_is_logged_in.core$fn__536.invoke(core.clj:50)
> at ring.middleware.params$wrap_params$fn__271.invoke(params.clj:55)
> at clojure.lang.Var.invoke(Var.java:401)
> at ring.adapter.jetty$proxy_handler$fn__496.invoke(jetty.clj:18)
> at
> ring.adapter.jetty.proxy$org.eclipse.jetty.server.handler.AbstractHandler$0.handle(Unknown
> Source)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
> at org.eclipse.jetty.server.Server.handle(Server.java:349)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:452)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:884)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:938)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:634)
> at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)
> at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
> at java.lang.Thread.run(Unknown Source)
>
>
>
>
>
>
>
>
>
>
>
> On Friday, October 19, 2012 12:26:15 PM UTC-4, larry google groups wrote:
>>
>> >you have `username` a symbol as the key in your map, but you are
>> >looking for `:username` they keyword as a key
>>
>> At some point I tried:
>>
>> (get new-user-entry "username")
>>
>> but that had the same result.
>>
>> Username is clearly a key, yes?
>>
>> What would you suggest?
>>
>>
>>
>>
>> On Friday, October 19, 2012 12:06:10 PM UTC-4, red...@gmail.com wrote:
>>>
>>> you have `username` a symbol as the key in your map, but you are
>>> looking for `:username` they keyword as a key
>>>
>>> On Fri, Oct 19, 2012 at 8:47 AM, larry google groups
>>> <lawrenc...@gmail.com> wrote:
>>> >
>>> >
>>> > Also:
>>> >
>>> >
>>> >
>>> >> I suggesting adding printlns or logging or a debugger and checking
>>> the
>>> >> value of this-users-params, it is almost certainly not what you
>>> expect
>>> >> it to be.
>>> >
>>> > I showed the output previously, but I will do it again.
>>> >
>>> > If I add a println like this:
>>> >
>>> >
>>> > (defn add-to-logged-in-registry [this-users-params]
>>> > (let [right-now (. (Date.) getTime)
>>> > new-user-entry (conj this-users-params { "updated" right-now
>>> })]
>>> > (println apply str new-user-entry)
>>> >
>>> > (if (:username new-user-entry)
>>> > (swap! registry assoc (:username new-user-entry)
>>> new-user-entry))))
>>> >
>>> > This code works perfectly at the REPL so to show a problem I have to
>>> upload
>>> > this to the live server. So I compile this and upload it to the server
>>> and
>>> > start it up and immediately the Javascript in the browsers of dozens
>>> of
>>> > users starts to bombard the app:
>>> >
>>> > java -jar who-is-logged-in-1.0.1-**standalone.jar 40000
>>> > App 'Who is logged in?' is starting
>>> > port: 40000
>>> > 2012-10-19 11:37:02.731:INFO:oejs.Server:**jetty-7.x.y-SNAPSHOT
>>> > 2012-10-19 11:37:02.846:INFO:oejs.**AbstractConnector:Started
>>> > SelectChannelConnector@0.0.0.**0:40000<http://SelectChannelConnector@0.0.0.0:40000>
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661023079, username rumbella,
>>> > first_name , last_name , user_image , site www.wpquestions.com}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661023140, username
>>> karlorihoo,
>>> > first_name Karlo, last_name Rihoo, user_image , site
>>> www.wpquestions.com}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661023698}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661024149, username Rainner,
>>> > first_name Rainner, last_name Lins, user_image Rainner_phptZ2nEJ.jpg,
>>> site
>>> > www.javascriptquestions.com}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661024159}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661024269}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661024646}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661024833, username dbranes,
>>> > first_name Dbranes, last_name , user_image dbranes_phpPJVl3f.jpg, site
>>> > www.wpquestions.com}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661025140, username
>>> Christianto,
>>> > first_name Christianto, last_name , user_image
>>> Christianto_phpqESzHW.jpg,
>>> > site www.wpquestions.com}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661025337, username jsoni,
>>> > first_name Jatin, last_name Soni, user_image jsoni_phpYlWQTr.jpg, site
>>> > www.wpquestions.com}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661025651}
>>> >
>>> > #<core$apply clojure.core$apply@d1fba79> #<core$str
>>> > clojure.core$str@7dfde44e> {updated 1350661025996}
>>> >
>>> > So, why does this not work? And what is the right way to be sure that
>>> this:
>>> >
>>> > {updated 1350661025996}
>>> >
>>> > Is never added to the registry (since there is no username).
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > On Friday, October 19, 2012 3:53:26 AM UTC-4, red...@gmail.com wrote:
>>> >>
>>> >> conj can surely produce maps, and does so happily in the following
>>> cases:
>>> >>
>>> >> (conj {} [:foo :bar])
>>> >> (conj {} {:foo :bar})
>>> >>
>>> >> I suggesting adding printlns or logging or a debugger and checking
>>> the
>>> >> value of this-users-params, it is almost certainly not what you
>>> expect
>>> >> it to be.
>>> >>
>>> >> as a side note creating a date object just to call getTime is kind of
>>> >> gross, try (System/currentTimeMillis)
>>> >>
>>> >> On Fri, Oct 19, 2012 at 12:42 AM, Sean Corfield <seanco...@gmail.com>
>>>
>>> >> wrote:
>>> >> > On Fri, Oct 19, 2012 at 12:10 AM, larry google groups
>>> >> > <lawrenc...@gmail.com> wrote:
>>> >> >>
>>> >> >> (defn add-to-logged-in-registry [this-users-params]
>>> >> >> (let [right-now (. (Date.) getTime)
>>> >> >> new-user-entry (conj this-users-params { "updated"
>>> right-now
>>> >> >> })]
>>> >> >> (if (:username new-user-entry)
>>> >> >> (swap! registry assoc (:username new-user-entry)
>>> >> >> new-user-entry))))
>>> >> >>
>>> >> >> The if statement seems to never be true.
>>> >> >
>>> >> >
>>> >> > conj produces a sequence, not a map, so the lookup of :username
>>> fails.
>>> >> > Try
>>> >> > new-user-entry (assoc this-users-params "updated" right-now)
>>> >> > --
>>> >> > Sean A Corfield -- (904) 302-SEAN
>>> >> > An Architect's View -- http://corfield.org/
>>> >> > World Singles, LLC. -- http://worldsingles.com/
>>> >> >
>>> >> > "Perfection is the enemy of the good."
>>> >> > -- Gustave Flaubert, French realist novelist (1821-1880)
>>> >> >
>>> >> > --
>>> >> > You received this message because you are subscribed to the Google
>>> >> > Groups "Clojure" group.
>>> >> > To post to this group, send email to clo...@googlegroups.com
>>> >> > Note that posts from new members are moderated - please be patient
>>> with
>>> >> > your
>>> >> > first post.
>>> >> > To unsubscribe from this group, send email to
>>> >> > clojure+u...@googlegroups.com
>>> >> > For more options, visit this group at
>>> >> > http://groups.google.com/**group/clojure?hl=en<http://groups.google.com/group/clojure?hl=en>
>>> >>
>>> >>
>>> >>
>>> >> --
>>> >> And what is good, Phaedrus,
>>> >> And what is not good—
>>> >> Need we ask anyone to tell us these things?
>>> >
>>> > --
>>> > You received this message because you are subscribed to the Google
>>> > Groups "Clojure" group.
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>>> > Note that posts from new members are moderated - please be patient
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>>>
>>>
>>>
>>> --
>>> And what is good, Phaedrus,
>>> And what is not good—
>>> Need we ask anyone to tell us these things?
>>>
>> --
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--
I may be wrong or incomplete.
Please express any corrections / additions,
they are encouraged and appreciated.
At least one entity is bound to be transformed if you do ;)
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