1
Mindquarry
Lessons learned
integrating
Cocoon,
Jackrabbit & Solr
Lars Trieloff

What we wanted to do 2
Building a „teamwork hub“, where people and software
Mindquarry
meet
people & people: collaboration software
people & software: usability
software & software: open architecture
One data tree, multiple representations, HTTP API

How we did it
3
procmail
Web Browser Feed Reader Mindquarry Desktop Client
+Ruby
R
R
R
R
R
Mindquarry
mod_proxy
R
Apache Cocoon
R
mod_perl
Lucene Teams Cocoon
Solr Servlet
AuthHandler
Index Block
Tasks Cocoon
Talk Cocoon Block
Block
File Sharing
Wiki Cocoon Block
Cocoon Block
R
R
XPath
QueryHandler
mod_dav
Subversion
Apache Jackrabbit
_svn
Xenodot
Persistence-
Manager
Postgres Database Subversion Repository

Apache Jackrabbit 4
Typed, Queryable,Versioned, High-Performance Node-
Mindquarry
Store
JCRSource with XML-to-JCR-mapping for Cocoon
XPath QueryHandler (Jaxen-based): full XPath 1.0
Xenodot PersistenceManager: Postgres-based
from university research, still work in progress

Apache Cocoon 5
XML-based web application
Mindquarry
framework
accept-header-based content
selection
HTML
XHTML fragments (for AJAX)
ATOM, OPML, JSON
PDF, iCalendar
HTTP basic authentication
StreamGenerator and
SourceWritingTransformer
for „reverse pipelines“

Solr & Servlet Services 6
Solr: REST-based search server
Mindquarry
Deployed with Cocoon Servlet Services
SolrServlet is a Servlet running in the Cocoon
Servlet
As all other Block Servlets are doing
Problem: dependency version conflicts, JSP

Conclusion 7
Powerful Environment for Rich
Mindquarry
Web Applications
Extending existing Frameworks
adds even more power
Giving back additions keeps your
code base clean
Projects are driven by the needs of
their contributors
stability
performance
timeframes
Contributions yield Influence