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Date: Wed, 2 Jan 2008 14:57:14 +0000
From: "David Illsley" <davidillsley@gmail.com>
To: axis-dev@ws.apache.org
Subject: Re: [Axis2] Dynamic Phase support
In-Reply-To: <47788758.9060608@thoughtcraft.com>
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Hi Glen,
Happy New Year :-)
I was wondering when we might get a chance to see your dynamic phase code?
Cheers,
David

On Dec 31, 2007 6:08 AM, Glen Daniels <glen@thoughtcraft.com> wrote:
> Hi Deepal, Amila:
>
> Deepal Jayasinghe wrote:
> > The problem is we have a set of default handlers then we add using
> > axis2.xml , so example for those handler could be our dispatchers. So
> > if we remove those from axis2.xml where are we going  to put them ?
>
> The core stuff like basic dispatchers should, I think, stay in
> axis2.xml.  But module-specific stuff (including the WSA dispatcher)
> could move out to the module.xmls.
>
> >> I think before doing any implementation we need to come to an agreement with
> >> what we expect as the dynamic phase support.
> > +1
>
> OK.  I made some more implementation progress, which we should discuss.
>
> >> Then the question comes, where we going to put the dispatch and transport
> >> phases? Those things can also be added to new module called Dispatch module
> >> (or default phase module) and shift with axis2 like addressing module.
> >
> > :)
> >
> > I think those dispatchers are core part of axis2 so , I do not agree
> > on moving them to a module. Rather I really wanted to get rid from
> > addressing module and keep them as core part of Axis2.
>
> Hm - I agree with the first sentence, I think there are and should be
> core dispatchers in axis2.  I'm not sure about the second sentence...
>
> >> So a module.xml (the only place to define the phases and hence handlers) has
> >> the following format.
> >>
> >> <module name="foo">
> >>    <Inflow>
> >>       <phase name="A" before="B" after="C">
> >>                 <handler name="a" before="b" after="c"/>
> >>                 <!-- other handlers under this phase -->
> >>       </phase>
> >>        <!-- other phase for this flow -->
> >>   </Inflow>
> >>   <!-- other flows -->
> >> </module>
>
> I like this syntax a lot - this way it could be identical between
> axis2.xml and module.xml.  That seems like a very good thing to me.  We
> need to keep supporting the old syntax too, but this seems much cleaner.
>
> Note that the desired behavior here is a merge - so if multiple modules
> (or core stuff in axis2.xml) all put handlers into the "Foo" phase, we
> should verify that all the constraints (including the location of "Foo"
> in the flow) are compatible with each other, and calculate the
> end-result for the order based on all of them.
>
> >> 'Phases and Handlers can only be defined in the module.xml and a phase can
> >> be placed within a flow using phase rules (after, before, phase first, phase
> >> last) and a handler can be placed within a phase using handler rules.
>
> Aside from the "only", this looks great. :)  The code that I recently
> implemented supports this idea in general - not specifically tied to
> Handlers or Phases, but usable for either/both.
>
> Cheers,
> --Glen
>
>
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-- 
David Illsley - IBM Web Services Development

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