CFfile -- value is not set to the queried data - coldfusion

Question

I have this add user form, it also doubles as a edit user form by querying the data and setting the value="#query.xvalue#". If the user exists (eg, you're editing a user, it loads in the users data from the database. When doing this on the <cffile field it does not load in the data, then when the insert goes to insert data it overrights the database values with a blank string (If a user does not input a new file). How do I avoid this?
Code:
Form:
<br/>Digital Copy<br/>
<!--- If null, set a default if not, set the default to database default --->
<cfif len(Trim(certificationsList.cprAdultImage)) EQ 0>
<cfinput type="file" required="no" name="cprAdultImage" value="" >
<cfelse>
File Exists: <cfoutput>View File</cfoutput>
<cfinput type="file" required="no" name="cprAdultImage" value="#certificationsList.cprAdultImage#">
</cfif>
Form Processor:
<!--- Has a file been specificed? --->
<cfif not len(Trim(form.cprAdultImage)) EQ 0>
<cffile action="upload" filefield="cprAdultImage" destination="#destination#" nameConflict="makeUnique">
<cfinvokeargument name="cprAdultImage" value="#pathOfFile##cffile.serverFile#">
<cfelse>
<cfinvokeargument name="cprAdultImage" value="">
</cfif>
CFC
ARGS:
<cfargument name="cprAdultExp" required="NO">
<cfargument name="cprAdultCompany" type="string" required="no">
<cfargument name="cprAdultImage" type="string" required="no">
<cfargument name="cprAdultOnFile" type="boolean" required="no">
Query:
UPDATE mod_StudentCertifications
SET
cprAdultExp='#DateFormat(ARGUMENTS.cprAdultExp, "mm/dd/yyyy")#',
cprAdultCompany='#Trim(ARGUMENTS.cprAdultCompany)#',
cprAdultImage='#Trim(ARGUMENTS.cprAdultImage)#',
cprAdultOnFile='#Trim(ARGUMENTS.cprAdultOnFile)#'
INSERT INTO
mod_StudentCertifications(
cprAdultExp,
cprAdultcompany,
cprAdultImage,
cprAdultOnFile

Answer 1

<cfif not
len(Trim(form.cprAdultImage)) EQ 0>
That is actually doing the reverse of what you want. I believe what you are trying to say is:
<!--- if the length is greater than 0, assume a file was uploaded --->
<cfif len(Trim(form.cprAdultImage)) GT 0>
file is not empty. do the upload ...
<cfinvokeargument name="cprAdultImage" value="#pathOfFile##cffile.serverFile#">
<cfelse>
<cfinvokeargument name="cprAdultImage" value="">
</cfif>
Edit
As an aside, .. since all of your arguments are optional, the code feels a bit awkward.
<cfinput type="file" required="no" name="cprAdultImage" value="#certificationsList.cprAdultImage#">,
You cannot really preset the file control "value" (browser security restrictions). Since a user can upload a file in both cases, just provide an input and display the "view" link only if a previous image exists.
<cfif len(Trim(certificationsList.cprAdultImage))>
File Exists:
<cfoutput>View File</cfoutput>
</cfif>
<cfinput type="file" required="no" name="cprAdultImage">
cprAdultImage='#Trim(ARGUMENTS.cprAdultImage)#',
The UPDATE logic looks a bit off as well. If a file was not supplied, you will end up overwriting the existing image with an empty string. To avoid that, only update that field if a new file was supplied (ie non-empty)
Form processing:
<cfif len(Trim(form.cprAdultImage)) GT 0>
<cffile action="upload" filefield="cprAdultImage" destination="#destination#" nameConflict="makeUnique">
<cfinvokeargument name="cprAdultImage" value="#pathOfFile##cffile.serverFile#">
</cfif>
CFC ARGS:
<!--- if values are always used in queries, should be required=true --->
<cfargument name="cprAdultExp" required="yes">
<cfargument name="cprAdultCompany" type="string" required="yes">
<cfargument name="cprAdultOnFile" type="boolean" required="yes">
<cfargument name="cprAdultImage" type="string" default="">
Query
UPDATE mod_StudentCertifications
SET
cprAdultExp='#DateFormat(ARGUMENTS.cprAdultExp, "mm/dd/yyyy")#',
cprAdultCompany='#Trim(ARGUMENTS.cprAdultCompany)#',
<!--- only overwrite the value if a new file was supplied --->
<cfif len(trim(ARGUMENTS.cprAdultImage))>
cprAdultImage='#Trim(ARGUMENTS.cprAdultImage)#',
</cfif>
cprAdultOnFile='#Trim(ARGUMENTS.cprAdultOnFile)#'
WHERE ....
And do not forget cleanup. Remove any old files...