how to determine the rollback cause in a cftransaction - coldfusion

Question

I have set of inserts that are wrapped in a <cftransaction> block, and I am getting a error and the insert is being rolled back.
Here is the code in question stubbed for space:
<cffunction name="InsertTCUV" access="public">
<cfargument name="vehicle required="true" type="xml" />
//Parsing the xml document here
<cftransaction>
<cfquery name="TCUVinsert datasource="mydb">
INSERT INTO tcuv
VALUES(...)
<cfquery>
<cfquery name="qLatestTCUVID" datasource="mydb">
SELECT TOP 1 tcuv_id FROM dbo.tcuv ORDER BY tcuv_id DESC
</cfquery>
<cfset curTCUVID = qLatestTCUVID.tcuv_ID>
<cfset optionsResult = insertOptions(curTCUVID,vehicle>
<cfset imagesResult = insertImages(curTCUVID,vehicle)>
<cfset standardFeaturesResult = insertStandardFeatures(curTCUVID,vehicle
</cftransaction>
</cffunction>
<cffunction name="insertOptions" access="private">
<cfargument name="TCUVID required="true type="numeric" />
<cfargument name="vehicleInfo" required="true" type="xml" />
<cfset var result = "good">
<cftry>
<cfset optionNode = xmlSearch(arguments.vehicleInfo[1], "p:RemarketingOption">
<cfloop index="i" from="1" to="#arrayLen(optionNode)#">
<cfset optionNodeNotes = XmlSearch(optionNode[#i#], "p:OptionNotes")>
<cfset optionNotes = "">
<cfloop index="j" from="1" to="#ArrayLen(optionNotesNodes)#">
<cfoutput>
<cfset optionNotes = optionNotes & " " & #optionNotesNodes[j].xmlText#>
</cfoutput>
</cfloop>
<cfquery name="insertOptions" datasource="mydb">
INSERT INTO dbo.tcuv_options
VALUES (
<cfqueryparam cfsqltype="cf_sql_integer" value="#arguments.TCUVID#">,
<cfqueryparam cfsqltype="cf_sql_varchar" value='#xmlSearch(optionNode[i], "p:OptionID")[1].xmlText#'>,
<cfqueryparam cfsqltype="cf_sql_varchar" value='#xmlSearch(optionNode[i], "p:OptionTypeCode")[1].xmlText#'>,
<cfqueryparam cfsqltype="cf_sql_varchar" value='#xmlSearch(optionNode[i], "p:OptionShortDescription")[1].xmlText#'>,
<cfqueryparam cfsqltype="cf_sql_varchar" value="#optionNotes#">
)
</cfquery>
</cfloop>
<cfcatch type="database">
//dumping cfcatch.* information
<cfset result = "error"
</cfcatch>
</cftry>
<cfreturn result>
</cffunction>
This whole thing is in a loop on the calling page, and everything works fine the first time through the loop. One the second pass, the TCUVInsert works, but I get to the insertOptions function, a coldfusion error is thrown saying that, variable insertOptions is undefined, and when I get the database, the second row isn't there, which tells me there was an error and the insert rolled back. So, there is an error with the insert of the options, and coldfusion isn't giving me the right error to diagnose it. So either I have to look in the database logs, which apparently are not setup, or try to extract the error from the cftransaction block, which I'm not sure how to do.
coldfusion 9, sql server 2008 r2
Any thoughts?

Answer 1

<cffunction name="insertOptions" access="private">
You are overwriting the function by using the same name for a query variable:
<cfquery name="insertOptions" datasource="imports">
Interestingly it is all because the query name was not var scoped. Functions are stored in the variables scope of the component. So by failing to localize the query name, you end up overwriting the function stored in variables.insertOptions when you run the query. Because insert statements do not return a resultset, that variable ends up being undefined. Hence the error. In this case the solution is to either scope the query name, or better yet remove it entirely (since it is not populated anyway).
Just one more reason to always var/local scope function variables - yes, query names too!