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From Ralph Goers <Ralph.Go...@dslextreme.com>
Subject Re: Modifying pipeline at request time?
Date Sat, 26 Jun 2004 23:28:11 GMT
I should think one could write an action that generates a sub-sitemap and 
then cause that sub-sitemap to be invoked from the action using a source 
resolver.

At 6/26/2004  08:17 AM, Joerg Heinicke wrote:
>On 25.06.2004 17:35, Jeff Jones wrote:
>
>>I would like to be able to dynamically generate and/or modify a pipeline at
>>request time, so that I can create an aggregated response using one or more
>>sub-documents, to be chosen based on the request. I'd also like to be able to
>>choose, at the same time, appropriate Transformers depending on the data
>>requested, and probably choose a Serializer as well. In short, I'd like to be
>>able to build a pipeline from scratch at request time.
>>I'd really rather not do this by performing if/else logic with a Selector 
>>in the
>>sitemap, because I don't want to have to edit it every time I create a 
>>new type
>>of sub-document.
>>I'm open to writing an action, using Flowscript, or just about anything else
>>that will perform well. I looked at the API for pipeline-related classes, 
>>but I
>>didn't see an obvious place to start. I'm also happy to achieve the same 
>>result
>>some other way, as long as it lets me choose data sources, transforms, and
>>output format at request time. Can anyone suggest an approach I should 
>>look at?
>
>That's not possible, the pipeline setup is the first thing that is done. 
>What you can do is to give the control over the pipeline selection (read: 
>not setup) to the flow and select dependent on the document type the 
>correct pipeline. When using resources you should reach a high level of 
>reusability. The dynamic aggregation can be done using CInclude or XInclude.
>
>Joerg
>
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