Following is an initial draft of a new component I am starting to work on.
Fire and Ice welcome ;)
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The WebServiceProxy Cocoon generator is intended to:
1) Allow easy syndication of dynamic content as a natural extension of
the currently popular static content syndication with RSS.
2) Allow transparent routing of web service request through GET, POST,
SOAP-RPC and SOAP-DOC binding methods.
3) Allow almost full control through sitemap configuration.
4) Allow use of Cocoon components for content formatting, aggregation
and styling through a tight integration with the Cocoon sitemap.
5) Require 0 (zero) lines of Java or other business logic code in most
cases.
6) Be generic and flexible enough to allow custom extensions for
advanced and non-typical uses.
7) Support sessions, authentication, http 1.1, https, request
manipulation, redirects following, connection pooling, and others.
8) Use the Jakarta HttpClient library which provides many sophisticated
features for HTTP connections.
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Example I: Integration of the Amazon book search service in a Cocoon portal:
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pipeline:
---------
<map:pipeline>
<map:match pattern="amazon/searchform">
<map:generate src="AmazonForm.xml"/>
<map:transform src="AmazonForm2html.xsl"/>
<map:transform
src="context://stylesheets/xmlform/xmlform2html.xsl"/>
<map:serialize type="html"/>
</map:act>
</map:match>
<map:match pattern="amazon/search*">
<map:generate src="http://rcm.amazon.com/e/cm{1}";>
<!-- The WebSericeProxy generator takes 3 arguments: -->
<!-- 1) The URL of the targeted web service -->
<!-- 2) The binding method: GET, POST, SOAP-RPC or
SOAP-DOC -->
<!-- 3) Optionally, name of the session to the remote
service, which allows scoping and grouping between different sitemap
sections. -->
<map:parameter name="wsproxy-method" value="GET"/>
<map:parameter name="wsproxy-session"
value="myAmazonSession"/>
</map:generate>
<map:transform src="amazonform2html.xsl"/>
<map:transform
src="context://stylesheets/xmlform/xmlform2html.xsl"/>
<map:serialize type="html"/>
</map:act>
</map:match>
</map:pipeline>
AmazonForm.xml:
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<?xml version="1.0" ?>
<document xmlns:xf="http://xml.apache.org/cocoon/xmlform/2002";>
<xf:form id="form-amazon" view="search"
action="amazon/search?t=myAmazonId-02-20&l=st1&mode=books&p=102&o=1&f=xml">
<xf:caption>Amazon book search by keyword</xf:caption>
<xf:textbox ref="search">
<xf:caption>Keywords</xf:caption>
</xf:textbox>
<xf:submit id="submit" class="button">
<xf:caption>Submit</xf:caption>
</xf:submit>
</xf:form>
</document>
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Example II: Even more interesting.
Integration with an interactive web service - the Cocoon FeedBack Wizard.
Notice that it is actually simpler to integrate with an interactive
service then a "single call" based one, because WebServiceProxy supports
sessions as well !
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<map:pipeline>
<map:match pattern="RemoteWizard/*">
<map:generate
src="http://remotehost:8080/cocoon/samples/xmlform/{1}";>
<map:generate src="http://rcm.amazon.com/e/cm{1}";>
<map:parameter name="wsproxy-method" value="POST"/>
<map:parameter name="wsproxy-session"
value="myFeedbackWizardSession"/>
</map:generate>
<map:transform src="myNewStyle-wizard2html.xsl"/>
<map:transform
src="context://stylesheets/xmlform/xmlform2html.xsl"/>
<map:serialize type="html"/>
</map:act>
</map:match>
</map:pipeline>
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End of file
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--
-= Ivelin =-
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