there is a rare condition in which CF 5 just hozes up a complex variable (I
think it only occurs with structures, but I'm not certain). I know in
particular that this has happened with my code on several occasions wherein
if I use valid array notation for the structure, an unknown exception
condition occurs, but if I use evaluate() to set the same variables, it
works fine. At some point I remember reading on one of my mailing lists
someone else mentioning having a problem with this same sort of thing which
apparently was a known bug, but not very common (and as a result not well
documented).
My first test case of this bug was this:
pseudocode:
<base template>
<cf_manager>
<cf_getvariables>
<cfset mystruct = structnew()>
<cfloop item="x" collection="#otherstruct#">
<cfset mystruct[x] = otherstruct[x]></cfloop>
<cfset caller.mystruct = mystruct>
</cf_getvariables>
<cfset caller.mystruct = mystruct>
<cf_manager>
<cfoutput>
#structkeyexists(mystruct,x)# == true
#issimplevalue(mystruct[x])# == false
#issimplevalue(evaluate("mystruct." & x))# == true
#mystruct.x# == [[ERROR UNKNOWN EXCEPTION CONDITION]]
</cfoutput>
</base template>
The custom tags weren't using end-tag syntax -- the xml format is convenient
for the explanation of the problem.
Currently I'm having a similar problem wherein the duplicate() function
causes the unknown exception condition because the data is in a similar
state.
<cfoutput>
#structkeyexists(mystruct,x)# == true
#issimplevalue(mystruct[x])# == false
#issimplevalue(evaluate("mystruct." & x))# == true
<cfset temp = duplicate(mystruct)> == [[ERROR UNKNOWN EXCEPTION CONDITION]]
</cfoutput>
I'm hoping that possibly someone on the list has a deeper understanding of
the issue and what causes it. I know that in the past I've been able to make
this change from:
<cfset mystruct[x] = otherstruct[x]>
to
<cfset mystruct[x] = evaluate("otherstruct.#x#")>
and this has been an effective work-around. At the moment I'm at a loss to
find a similar construct in the code, so I'm not sure how to isolate or
debug the offending code. I know the duplicate() function isn't actually the
cause -- the cause is burried somewhere else in the code where the structure
I'm trying to duplicate is being created, but I can't seem to figure out
where.
Any insight is greatly appreciated,
Thanks,
s. isaac dealey 954-776-0046
new epoch http://www.turnkey.to
lead architect, tapestry cms http://products.turnkey.to
tapestry api is opensource http://www.turnkey.to/tapi
certified advanced coldfusion 5 developer
http://www.macromedia.com/v1/handlers/index.cfm?ID=21816
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