[MOBY-dev] Moby Collections in Taverna

[Dirk Haase]

Hi Eddie,

On Thursday 13 April 2006 15:56, Edward Kawas wrote:
> Hi Dirk,
>
> The output port behaviour has been cloned for collections with a new port,
> Collection 'As Simples'. So that port now takes the n items in a collection
> and produces n simples that Taverna can iterate over.

Wow, that's what I call a prompt fix!

> However, if that port isn't used and a collection is passed to a service
> that expects a simple, I transparently break apart the collection with n
> items into n invocations containing a simple and then invoke the service n
> times, rather than one time with a n invocation message. This was done,
> because I noticed that there were time out issues with very large
> collections.

OK, I see this behavior when I use the 'output' port. For the old 
collection-type port  'Object(Collection - <outputArticleName>)' things are 
strange: it seems that only the first element in the collection is piped to 
the next service.

However, I think this solution is very convenient. The drawback is that we now 
have three distinct types of output ports for moby services, this will 
confuse people. What I want to say is that good documentation is desperately 
needed ;-)

Thanks,
dirk