Yesterday I worked again on the cocoon:simple-deploy Maven goal which can be
used to deploy a project that contains a Cocoon block. It runs through now for a
very simple block[1] but it doesn't create a valid Cocoon web application yet.
And that leads to my question now:
If we think of the simplest possible block, what do we want that it depends on?
The usual block has the basic requirement of some core components (file
generator, trax transformer, xml/html serializer, ...). In order to get blocks
run, it additionally has (indirect) requirements of
- an environemt
- blocks framework
Is there something else?
According to the pom.xml of the blocks framework, it depends on cocoon-core. I'm
not sure but if we consider cocoon-core being a block too, we get a circular
dependency, don't we?
Coming back to my initial question, I think that a block should only have a
dependency on some kind of core block. This core block contains the most basic
sitemap components and has dependencies on
- the environment (HTTP environment as default)
- the blocks framework (Daniel's current implementation as default, OSGi could
be another implementation)
- more core stuff (sitemap, pipelines, caching, utilities --> needs to be split
up later)
Daniel (and others), is this they way we want to go or do you envision something
different?
A final question: Do we have something that could be called "runtime
environment"? For now I can only think of the web.xml if you use Cocoon from
within a servlet container[2]. Right?
The artifact produced in [2] is used from within the deployer to create a webapp
skeleton.
[1]
http://svn.apache.org/repos/asf/cocoon/trunk/cocoon-plugins/cocoon-deployer-plugin-demo/README.txt
[2]
http://svn.apache.org/repos/asf/cocoon/trunk/cocoon-plugins/cocoon-minimal-webapp/
--
Reinhard Pötz Independent Consultant, Trainer & (IT)-Coach
{Software Engineering, Open Source, Web Applications, Apache Cocoon}
web(log): http://www.poetz.cc
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