Re: What is the best method for transmitting objects/tagged records?

["Randy Brukardt" <randy@rrsoftware.com>]

"Shark8" <onewingedshark@gmail.com> wrote in message 
news:fb72e599-968f-4850-abf7-1ed1fc8e50c3@d1g2000yqm.googlegroups.com...
On Jun 7, 1:06 pm, tmo...@acm.org wrote:
>> >> marshalling/unmarshalling part of a Partition Communication Subsystem?
>>
>> >I think that's what it amounts to, yes.
>>
>> Sending an object over a comm link differs from writing to/reading from
>> disk only in timing.
>
>Which is exactly why using tags and streams is a good idea.
>The main problem is that the package that defines the tag-type is not
>WITH-able by packages that are Remote_Types / Remote_Interfaces.
>
>So, even a function that has a parameter-footprint of
>"Procedure ( Tag : In Out Ada.Tags.Tag )" is invalid
>
>(WITH-ing Ada.Streams is fine because it is a Pure package.)

Right, but you don't need to use Ada.Tags (or anything tags) in order to 
stream tagged types. Just use the provided T'Class'Input and T'Class'Output 
attributes. For those to have portable results, you need to specify your 
external tag values for your tagged types (we previously discussed that).

                                            Randy.