Re: Handling errors retrieving a <map:part> for <map:aggregate>

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Javier,

On 6/1/16 3:19 PM, Javier Puerto wrote:
> I more used to version 2.2 but it should be the same. By you
> description I think about creating a new pipeline with a matcher to
> handle the external request with a specific error handler[1] that
> contains a reader with an empty file.
> 
> It should be something like:
> 
> <map:pipeline type="caching">
> 
> <map:match pattern="remote-handler/**"> <map:reader
> src="http://remote-server/{1}"/> </map:match>
> 
> <map:handle-errors> <map:reader src="empty.xml"/> 
> </map:handle-errors>
> 
> </map:pipeline>
> 
> Then you could substitute all your calls to external resources
> that needs to produce an empty XML in case of error to call to the
> new matcher. This way you can tune up the external pipeline for
> caching if it's needed.
> 
> I hope it helps.

Thanks.

How can I reference a matcher from a different pipeline? Do I need to
address it any differently than I would if the matcher were in the
same pipeline?

Speaking of caching, I'd prefer for the "remote-handler" matcher to
re-try pretty regularly. Do matchers cache at all under normal
circumstances? I've never bothered attempting to configure any caching
in Cocoon before.

Thanks,
- -chris

> 2016-06-01 19:56 GMT+02:00 Christopher Schultz 
> <[email protected]
> <mailto:[email protected]>>:
> 
> All,
> 
> Using Cocoon 2.1, I've got an aggregate generator like this:
> 
> <map:match pattern="foo.html"> <map:aggregate element="bar"> 
> <map:part src="/path/to/main.xml" /> <map:part
> src="http://remote-server/baz.xml" /> </map:aggregate> ... 
> </map:match>
> 
> There are times when "remote-server" is not available and I'd like
> to basically include nothing at that location within the aggregate
> document .
> 
> Can I do that within the <map:aggregate> or <map:part> elements, or
> is it better to wrap the <map:part> another <map:match> with an
> error handled?
> 
> Followup question: how can I configure an error handler to do
> whatever I want? I only want this particular behavior to happen for
> this particular <map:part> ... presumably, I'll want other behavior
> in other situations.
> 
> Thanks, -chris
> 
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