Skip Schuler wrote:
So the thing is that I need to implement the Servlet interface, is that
right?
No you don't need to implement the Servlet interface. The workspace
admin app does more than producing feeds and that's why it implements
the Servlet interface in addition to the Collection interface used to
produce feeds.
The following options are available for what you want to do:
A. Implement o.a.t.sca.implementation.data.api.Collection
This is a high level interface allowing you to produce feeds out of
collections of data items, without having to deal with the details of
ATOM or RSS in your code.
It has a query method, which will be invoked when the service is invoked
with query parameters.
The Tuscany tutorial's ShoppingCart [1] shows an example, I just added
code to it showing how to implement that query() method.
B. Implement o.a.t.sca.binding.atom.collection.Collection
That interface allows you to work with the ATOM feed directly if you
need to, represented as an o.a.abdera.model.Feed model object. It also
has a query method.
The feed-aggregator sample [2] shows how to implement that query method,
and http://localhost:8083/atomAggregator?title=whatever now returns a
feed of articles with titles containing 'whatever'.
C. Implement o.a.t.sca.binding.rss.collection.Collection to produce RSS
feeds and in your code work with the RSS feed directly, represented as
com.sun.syndication.feed.synd.SyndFeed model objects.
This is similar to (B) but for RSS feeds, with a query method as well.
Options (B) and (C) are available starting with Tuscany 1.2 release,
which we are in the middle of releasing. I'd suggest to try 1.2 release
candidate 1 as soon as it's available (probably today watch for any
announcement from Luciano).
You'll see notable changes in 1.2 as it now uses Apache Abdera instead
of ROME to provide better support for ATOM.
[1]
http://svn.apache.org/repos/asf/incubator/tuscany/java/sca/tutorial/assets/services/ShoppingCartImpl.java
[2]
http://svn.apache.org/repos/asf/incubator/tuscany/java/sca/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java
--
Jean-Sebastien
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