[Fwd: Concurrent access to flowscript mixes variable content]

Wed, 29 Sep 2004 06:17:32 -0700 

sorry , I've replaced the tabs for spaces

-------- Original Message --------
Subject: Concurrent access to flowscript mixes variable content
Date: Wed, 29 Sep 2004 15:18:04 +0200
From: Arcadio Pando Cao <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]

Hello,

I discover a strange behaviour when I execute this flowscript from two
clients at the same time:

mypage.js:

var test = null;

function mypage() {
  cocoon.session.invalidate();

  var form = new Form("logica/forms/mypage.xml");
  form.showForm("mypage1.template");

  ......

  var session = cocoon.session;

  print("test [" + test + "]");
  test = form.lookupWidget("nameWidget").getValue();

  form.showForm("mypage2.template",
                  {"sessionId" : session.getId(),
                  "sessionNew" : session.isNew(),
                  "sessionCreateTime" : session.getCreationTime(),
                  "sessionLastAccess" : session.getLastAccessedTime()});
}

the problem is that when I try this flowscript from two navigators (IE6)
in the same machine, and after the second showForm() I press the
navigator's back button, then I submit the form again and the value of
'test' in the print is the value put by the last navigator, I'll try to
explain it with an example:

time     navigator1                    navigator2
---------------------------------------------------
 0       showForm("mypage1")
 1                                     showForm("mypage1")
 2       submit => nameWidget='A'
         test [null]
 3                                     submit => nameWidget='B'
                                       test [null]
 4       <back button>
 5                                     <back button>
 6       submit => nameWidget='C'
         test [B]
 7                                     submit => nameWidget='D'
                                       test [C]


so as you can see, the values of the variable 'test' are mixed in the
two sessions, even though the session ID's are different

I've tried the same test with the two navigators in different machines
and the output is correct

is it a bug or I'm using it incorrectly? is there a problem with global
variables?

Thanks a lot
Arcadio

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