[Exist-open] session:create() fails

[wolfmanstout <wol...@ya...>]

For a while now, I've been having a bug where sometimes my eXist page would=
 give me an error saying "getAttribute: Session already invalidated."  This=
 would always happen if I had not accessed the page for a while (implying t=
hat it the session had expired).  Nevertheless, the very first thing I did =
in my XQuery script was session:create(), and nowhere was I invalidating it=
, so the session should have been recreated.  Before I continue any further=
, know that I am running eXist-1.1.1-newcore.war inside Tomcat, and this sc=
ript is being called by Cocoon.  =0A=0AAfter much unsuccessful tweaking of =
various details of the script, I finally realized that the error could be r=
eproduced with an extremely simple script:=0A=0Axquery version "1.0";=0Adec=
lare namespace session=3D"http://exist-db.org/xquery/session";=0Asession:cr=
eate(), session:invalidate()=0A=0AAll I have to do is access this two times=
 in succession, and from the second run onward the script will continually =
produce that error message.  I wondered whether this had to do with lazy ev=
aluation, so I made the invalidate() call dependent on create() running fir=
st:=0A=0Aif (not(session:create())) then session:invalidate() else ()=0A=0A=
This didn't solve the problem.  Unless I'm misunderstanding what these func=
tions should be doing, it seems to me that both of these scripts should wor=
k.  Session:create() creates a session if none exists, so it shouldn't matt=
er whether a previous session has been invalidated or not.  =0A=0AAny ideas=
?=0A=0AThanks a bunch,=0A~James=0A=0A=0A=0A=0A       =0A___________________=
_________________________________________________________________=0ASick se=
nse of humor? Visit Yahoo! TV's =0AComedy with an Edge to see what's on, wh=
en. =0Ahttp://tv.yahoo.com/collections/222