Contents > CFML Reference > ColdFusion Functions > StructIsEmpty

StructIsEmpty

Determines whether a structure contains data.

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

Decision functions, Structure functions

StructIsEmpty(structure)

Structure functions

ColdFusion MX: Changed behavior: this function can be used on XML objects.

<!--- 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> 

Contents > CFML Reference > ColdFusion Functions > StructIsEmpty

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