CFML Reference

StructIsEmpty

Description

Determines whether a structure contains data.

Return value

True, if structure is empty; if structure does not exist, ColdFusion throws an exception.

Category

Decision functions, Structure functions

Syntax

StructIsEmpty(structure)

See also

Structure functions

History

New in ColdFusion MX: this function can be used on XML objects.

Parameters

Parameter	Description
structure	Structure to test

Example

<!--- This example illustrates use of StructIsEmpty. --->
<p>This file is identical to addemployee.cfm, which is called by StructNew,
StructClear, and StructDelete. It adds employees. Employee information 
is passed through employee structure (EMPINFO attribute). In UNIX, you
must also add the Emp_ID.
<cfswitch expression = "#ThisTag.ExecutionMode#">
  <cfcase value = "start">
   <cfif StructIsEmpty(attributes.EMPINFO)>
    <cfoutput>Error. No employee data was passed.</cfoutput>
     <cfexit method = "ExitTag">
   <cfelse>
    <!--- Add the employee; In UNIX, you must also add the Emp_ID --->
     <cfquery name = "AddEmployee" datasource = "cfsnippets">
     INSERT INTO Employees
       (FirstName, LastName, Email, Phone, Department)
      VALUES 
       <cfoutput>
        (
         '#StructFind(attributes.EMPINFO, "firstname")#' ,
         '#StructFind(attributes.EMPINFO, "lastname")#' ,
         '#StructFind(attributes.EMPINFO, "email")#' ,
         '#StructFind(attributes.EMPINFO, "phone")#' ,
         '#StructFind(attributes.EMPINFO, "department")#'
         )
       </cfoutput> 
    </cfquery>
   </cfif>
   <cfoutput><hr>Employee Add Complete</cfoutput>
  </cfcase>
</cfswitch> 

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