cfrethrow

Description

Rethrows the currently active exception. Preserves the exception's cfcatch.type and cfcatch.tagContext variable values.

Category

Exception handling tags, Extensibility tags

Syntax

<cfrethrow>

See also

cferror, cfthrow, cftry; Handling runtime exceptions with ColdFusion tags in Handling Errors in ColdFusion MX Developer's Guide

Usage

Use this tag within a cfcatch block. This tag is useful in error handling code, if the error handler cannot handle an error that it catches. For example, if cfcatch type = "any" gets a DATABASE exception, and the code is designed to handle only CFX exceptions, the handler raises the exceptions again, with details intact, so that a higher-level handler can process the error information. If you used the cfthrow tag, the type and details of the original exception would be lost.

Example

<h3>cfrethrow Example</h3>
<!--- Rethrow a DATABASE exception. --->
<cftry>
   <cftry>
      <cfquery name = "GetMessages" dataSource = "cfdocexamples">
         SELECT  *
         FROM   Messages
      </cfquery>
   <cfcatch type = "DATABASE">
      <!--- If database signalled a 50555 error, ignore; otherwise, rethrow
exception. --->
      <cfif cfcatch.sqlstate neq 50555>
         <cfrethrow>
      </cfif>
   </cfcatch>
   </cftry>
<cfcatch>
   <h3>Sorry, this request can't be completed</h3>
   <h4>Catch variables</h4>
   <cfoutput>
      <cfloop collection = #cfcatch# item = "c">
         <br>
         <cfif IsSimpleValue(cfcatch[c])>#c# = #cfcatch[c]#
         </cfif>
      </cfloop>
   </cfoutput>
</cfcatch>
</cftry>

View comments in LiveDocs