Calling CORBA Objects

In the cfobject tag, you must specify the following attributes when calling CORBA objects:

Set the type attribute to CORBA. If no type is specified, COM is assumed.
The context attribute shows how the object reference is obtained. Set context to IOR for a file containing the object's unique Interoperable Object Reference or to NameService.
If you set the context attribute to IOR, set the class attribute to the file containing the stringified version of the IOR. ColdFusion must be able to read this IOR file at all times, so make it local to the server or on the network in an accessible location.
If you set the context attribute to NameService, the class attribute must include a period-delimited name, such as MyCompany.Department.Dev. Currently, ColdFusion can only resolve objects registered in a CORBA 3.0-compliant naming service. Make sure that the naming service (NS) is brought-up with a default naming context. The server implementing the object should bind to the default context, and register the appropriate name. ColdFusion also binds to the default context to resolve the name.
Set the name attribute to the name that your application uses to call the object's operations and attributes.

For the complete cfobject syntax, see the CFML Reference.

Declaring structures and sequences

After you create the object, you can invoke attributes and operations on the object using the syntax outlined in the previous sections. ColdFusion also supports the use of complex types such as structures and sequences. For structures, use ColdFusion structures; for sequences, use ColdFusion arrays.

Example

Here is the IDL for an object:

struct SimpleStruct

{

  short s;

  long l;

  float d;

};



struct NestedStruct

{

  SimpleStruct f;

  char c;

  string s;

};



typedef sequence<long, 5> BLongSequence;



interface SomeObject {

  short SomeMethod( in NestedStruct inStruct,  in BlongSequence inSeq);



};

Here is the applicable ColdFusion code:

<!--- Declare a couple of structures --->

<cfset x = StructNew()>

<cfif IsStruct(x)>

  <cfset temp=StructInsert(x,"s",3)>

  <cfset temp=StructInsert(x,"l", 256)>

  <cfset temp=StructInsert(x,"d", 93.45)>

</cfif>



<cfset NestedStruct = StructNew()>

<cfif IsStruct(NestedStruct)>

  <cfset temp=StructInsert(NestedStruct,"f",x)>

  <cfset temp=StructInsert(NestedStruct,"c", 'b')>

  <cfset temp=StructInsert(NestedStruct,"s", " Test")>

</cfif>



<!--- Declare a sequence --->

<cfset FixedSeq = ArrayNew(1)>



<cfloop index="LoopCount" from="1" TO="5">

  <cfset FixedSeq [LoopCount] = #LoopCount#>

</cfloop>



<cfset retA=obj.SomeMethod(NestedStruct, FixedSeq)>

Exception handling

You can catch exceptions thrown by the CORBA object methods with the cftry and cfcatch tags. However, you cannot extract information from the exception object.

Developing ColdFusion Applications
Using cfobject to Invoke Component Objects