Re: I need help creating a composite type with some sort of constraints.

>
> John Oyler wrote:
>
> I can create one or more domains, and use those to create the
>> composite type from. But each domain can only be constrained in its
>> own value, I can't constrain element #1's value based on what element
>> #2's value is.
>>
>> If I create a domain from a composite, it will complain with a "ERROR:
>> cdt.instant_message is not a valid base type for a domain" error.
>>
>> I can't create a trigger for a composite either (technically it's not
>> a table, but I was hoping it might be treated as one internally).
>>
>> Is there any way to do this? Are there any plans to change or expand
>> this functionality in the future?
>>
>> Thanks,
>> John O.
>>
>
> For now you have to put all checks in custom constructor functions.
>
> Scott
>

I must not be looking in the right place... the only thing I can find that
seems remotely related, is the page on input/output functions for custom
types. And I was under the impression that only applies to non-composite
custom types. Did I miss something?

Thanks,
John O.