On 1/3/08, Adkins, Randy <[EMAIL PROTECTED]> wrote:
>
> Here is the call to the getMessages function: (Yes it is set as an
> object)
> <cfset messageStruct =
> application.msgMgr.getMessage(attributes.messageId)>
>
> Now I can check it this way but at times it returns an error on the
> initial startup:
> <cfif messageStruct.recordcount>
> ... blah blah
> </cfif>
>
>
> Here is the error returned:
> -----------------------------------
> You have attempted to dereference a scalar variable of type class
> java.lang.String as a structure with members.
This is pretty easy. It means that SOMEHOW that variable
"messageStruct" contains a string and not a structure.
Based on the code in the function, it's hard to imagine how this
happens or why it would contain an string.
One thing you might do:
<cfif not isQuery(messageStruct)>
--- send yourself an error message, report an error, etc ---
<cfelseif messageStruct.recordcount>
... blah blah
</cfif>
> TO clarify somethings:
> Yes the basic structure is created as a query (dynamic query)
> onApplicationStart:
> <cfset variables.systemMessageStruct =
> queryNew('message_id,message,messageType,IconSize')>
> <!--- Copy Dynamic Query to Session Scope --->
> <cfset session.systemMessageStruct = variables.systemMessageStruct>
I've had issues in the past with creating queries dynamically and not
adding rows... unfortunately I can't remember exactly what those
issues were.
> Any idea why it would return the error or a way I can prevent it? I can
> not use IsStruct since it is a query rather than a true structure?
How about isQuery() =)
It might also be wise to either change the variable name to NOT refer
to struct, since it isn't a struct, *OR* convert the query returned -
since you're expecting only one row anyway to a real structure.
cflib has a nice QueryRowToStruct() function.
It's more efficient to access structure elements than elements of a
single-record query anyway so if you're accessing the contents of the
"struct" a lot, it makes sense to convert it to a REAL struct.
--
Rick Root
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