Paul,
Thank you for your interest in the VXQuery engine. We are looking for
mentors for the project. Would you be willing to be a mentor?
Thanks,
Vinayak
Paul Fremantle wrote:
Synapse would also be interested in using the XQuery implementation!
Thanks
Paul
On Mon, May 11, 2009 at 7:22 PM, Vinayak Borkar <vbo...@yahoo.com> wrote:
Hello,
We wish to present a proposal to create a new project in the incubator
called VXQuery. Please find below, the plain-text version of the proposal.
Any feedback would be greatly appreciated.
Thanks,
Vinayak
VXQueryProposal
Abstract
Apache VXQuery is a language processor that implements the XML Query
Language v1.0 standardized by the W3C.
Proposal
VXQuery (Versatile XQuery) will be a standards compliant XML Query processor
implemented in Java. We believe that there exists a strong (and growing)
need to process semi-structured data in many applications. The W3C
standardized v1.0 of the XML Query Language in early 2007. Since then, a few
processors have surfaced (both commercial and open source). VXQuery will
implement this standard.
VXQuery plans to be the glue that brings together imperative programming in
Java and declarative programming in XQuery. The project would enable
developers to use XQuery to navigate and transform application objects
declaratively in Java applications with minimal overhead.
In the VXQuery project we plan to build an implementation that allows users
to run declarative XQueries on arbitrary object models. Existing XQuery
engines execute queries by translating the user data into some form of XML
Object model. With VXQuery, we take the opposing view - Translate the query
to work natively on the user's object model.
In addition, VXQuery works on top of different XML representations including
DOM, Stax, and a space optimized model motivated by Xalan's DTM (Document
Table Model).
VXQuery will also provide a library that allows application developers to
express declarative queries without the need to learn a new syntax. We
believe that this will speed up the adoption process.
Current Status
This is a new project.
Meritocracy
The initial developers are very familiar with meritocratic open source
development at Apache. Apache was chosen specifically because the initial
developers want to encourage this style of development for the project.
Community
VXQuery seeks to develop developer and user communities during incubation.
Core Developers
The core members of the project are diverse. Vinayak Borkar is an
independent consultant. Till Westmann works for a company that would be a
potential consumer of VXQuery. During incubation the developers base will be
broadened.
Alignment
XQuery is gaining more traction as a XML management technology and there
already are several Apache projects ([WWW] XMLBeans, [WWW] Camel, [WWW]
Tuscany) that use or need a XQuery implementation. As no such implementation
is available as an Apache project these projects have to rely on external
engines. VXQuery can fill this gap and complement the XML support of the
Apache Software Foundation.
Known Risks
Orphaned products
VXQuery is new development.
Inexperience with Open Source
The initial developers include long-time open source developers. Vinayak
Borkar is an active contributor to the Zorba project at the FLWOR
foundation.
Relationships with Other Apache Products
XMLBeans is a representation of XML that would be natively supported in
VXQuery. Therefore VXQuery can be used as an efficient and Apache-licensed
implementation for the [WWW] selectPath and execQuery methods found in
XMLBeans.
Similarly, [WWW] Tuscany's SDO implementation can be natively supported and
VXQuery can be used to provide an [WWW] XQuery implementation for Tuscany.
VXQuery can also be used as an XQuery implementation for [WWW] Camel.
Further, VXQuery uses the Xerces XML parser and schema validator.
A Excessive Fascination with the Apache Brand
We believe in the processes, systems, and framework Apache has put in place.
Apache is also known to foster a great community around their projects and
provide exposure. While these points are important, they are not the main
motivation for choosing Apache to host VXQuery.
Documentation
Not publicly available
Initial Source
Not publicly available
External Dependencies
[WWW] JavaCC (BSD license), [WWW] Davos SDO implementation (Apache 2.0
license), [WWW] Woodstox XML parser (Apache 2.0 license), [WWW] XStream
project (BSD license)
Required Resources
Developer and user mailing lists
[MAILTO] vxquery-...@incubator.apache.org [MAILTO]
vxquery-us...@incubator.apache.org [MAILTO]
vxquery-comm...@incubator.apache.org
A subversion repository
[WWW] https://svn.apache.org/repos/asf/incubator/vxquery
A JIRA issue tracker
VXQuery (VXQUERY)
Initial Committers
*
Vinayak Borkar <vborky at yahoo dot com>
*
Till Westmann <till at westmann dot org>
*
Cezar Andrei <cezar at apache dot org> [Have CLA]
*
Michael Carey <mjcarey at ics dot uci dot edu>
Sponsors
*
XMLBeans PMC
Champion
*
Cezar Andrei
Nominated Mentors
*
Looking for mentors
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