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From Apache Wiki <>
Subject [Incubator Wiki] Update of "StonehengeProposal" by PaulFremantle
Date Tue, 04 Nov 2008 14:36:44 GMT
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= Project Stonehenge =

== Abstract ==
Stonehenge is a set of example applications for Service Oriented Architecture that spans languages
and platforms and demonstrates best practise and interoperability. 

== Proposal ==

The aim of the Stonehenge project is to develop a set of sample applications to demonstrate
seamless interoperability across multiple underlying platform technologies by using currently
defined W3C and OASIS standard protocols.

We are proposing this incubator project because we believe that  a project that includes a
set of sample applications, with multiple language and framework implementations will become
a useful and important part of the SOA landscape.  It will:
 * illustrate and develop best practice for interoperable applications that communicate via
distributed protocols, 
 * demonstrate interoperability between platforms, 
 * provide sample code upon which SOA developers can build, 
 * help identify interoperability issues and their solutions, and 
 * build confidence in cross-platform deployment of SOA technologies.

We believe that pursuit of these objectives at Apache has a number of significant benefits:
 1.	Attractiveness of Apache to the wide range of vendors and customers willing to participate
in the conception, development, and implementation of new scenarios.
 1.	A well-established, neutral forum and process for architectural design and implementation.
 1.	The flexibility of the Apache License to allow users to leverage Stonehenge without onerous

Initially WSO2 will contribute an application called StockTrader, which is currently implemented
in various languages based on Axis2/Java and Axis2/C including Java, PHP, Ruby, Perl, Python,
and Spring. This will form the first of several applications which will be built in this incubator
In addition, we will invite contributions of other StockTrader applications, including the
Microsoft StockTrader sample found at
We also invite contributions from any other organization who has similar applications or technologies.
Interoperability between the WSO2 Stocktrader 2.0 application and the Microsoft Stocktrader
2.0 has been demonstrated.

== Current Status ==

The development to date of the StockTrader application has successfully shown the benefits
of cross-platform interoperability and have provided a useful example to developers on those
platforms. However, the StockTrader application as currently implemented has limitations,
including a limited repertoire of technologies (e.g. focusing primarily on WS-Security), and
a limited number of implementation platforms (Axis2/Java, Axis2/C). We expect that this podling
would expand the scope of this effort to a wider set of implementation platforms (including
but not limited to Apache technologies such as Apache CXF) as well as bring in a wider, more
diverse community of participants.

== Meritocracy ==
One of the core aims of the Stonehenge proposal is to encourage meritocracy and contribution.
One core aim in coming to Apache is to use the well-defined governance model that Apache has
and to encourage the developers of frameworks to get involved and contribute implementations
of the core components.
A good proportion of the project participants are experienced Apache contributors and totally
understand the Apache meritocracy approach. Everyone involved see that as being crucial to
the success of this project.

== Core Developers ==
The core developers are all listed in the initial committers list later in this proposal.

== Alignment ==
The project already uses core libraries from the [ Apache WS project]
including [ Apache Axis2/Java], [ Rampart]
and [ Sandesha2]. In addition, the PHP, Perl, and Python
versions use the [ Apache Axis2/C] libraries. We hope to develop
versions that utilize at least the [ Apache CXF] and [
Apache Qpid] projects in the future.
For build we intend to use [ Apache Maven].

== Known Risks ==

=== Orphaned Products ===
We are enthusiastic about the potential to participate on the Stonehenge project if it goes
forward.  The StockTrader application and other applications are already considered a core
part of WSO2’s offerings and we expect new applications developed to be similarly important.
We also intend to utilize these applications to demonstrate ongoing interoperability. The
success of Stonehenge will rely on developing a community and we think it offers an exciting

=== Inexperience with Open Source ===
The proposed group of committers includes people with varying amounts of experience at Apache,
but everyone is interested in the potential of the project and to its success at Apache. The
intent is for the existing Apache committers to mentor the rest of the developers.

=== Homogeneous Developers ===
The proposed developers come from <n> companies. The developers have already experience
in working together across company boundaries and welcome input from other developers –
either independent, existing Apache committers, or those in companies that wish to participate
in Stonehenge.

=== Leveraging the Strong Apache Brand ===
We strongly believe that the ASF is the right place for this project and to develop a community.
Firstly, the ASF offers a set of governance practices and models that are independent of any
company. We believe this is vital in creating interoperable cross-framework and cross-language
distributed applications and systems. We also believe that demonstrating interoperability
can be accomplished in the collaborative environment, and that we can help developers and
users better understand each others frameworks and code, which will help  identify and resolve
Although interoperability can be achieved by design, or through private collaborative efforts,
we believe forums like Apache offers a valuable alternatives for developers from different
companies and technological backgrounds to come together to help increase interoperability
between technologies. 

== Documentation ==
Existing documentation for the WSO2 Stocktrader application can be found here:
 * []

== Initial Source ==
Apache would receive all source and documentation contributions under the Apache contributor’s
agreements.  Contributions of the sample applications (or related materials) do not include
any commercially available enabling technologies or standards that may be referenced in the
sample applications.applications, or which the sample applications are related to.The WSO2
source is already available under the Apache license here:

== External Dependencies ==
As a project demonstrating broad interoperability, the project should encourage the broadest
possible implementation of each sample application.  We thus expect certain components of
the application to be run on open source licensed platforms, on dually licensed platforms,
as well as on commercially licensed platforms. 
The existing Stocktrader code bases variously depend on Apache projects (Apache Axis2/Java,
Apache Axis2/C, Apache Maven), on other open source systems such as WSO2 WSF/PHP and Spring
(through WSO2 WSF/Spring).  Future contributions could depend on proprietary systems such
as Microsoft .Net or commercial JEE servers.

== Cryptography ==
Stonehenge will use the existing Apache technologies (Rampart, Rampart/C, WSS4J) and may leverage
other technologies such as IBM, Microsoft, Oracle or other frameworks for security and cryptography.
There is no code contributed or expectation of contributions that implement cryptography itself.

== Required Resources ==
=== Mailing Lists ===
 *     stonehenge-private
 *     stonehenge-dev
 *     stonehenge-commits
 *     stonehenge-user

=== Subversion Directory ===

 *     [WWW]

=== Issue Tracking ===
 *     JIRA : Stonehenge (Stonehenge)

=== Other Resources ===
 *     None

== Initial Committers ==
 *	Samisa Abeysinghe (
 *	Drew Baird (
 *	Kamaljit Bath (
 *	Michael Champion (
 *	Glen Daniels (
 *	Paul Fremantle (
 *	Mark Little (
 *	Jonathan Marsh (
 *	Selvaratnam Uthaiyashankar Shankar  (
 *	Sanjiva Weerawarana (

=== Affiliations ===
 * Samisa Abeysinghe	WSO2
 * Drew Baird	Microsoft
 * Kamaljit Bath	Microsoft
 * Michael Champion	Microsoft
 * Glen Daniels	WSO2
 * Paul Fremantle	WSO2
 * Mark Little	Red Hat
 * Jonathan Marsh		WSO2
 * Selvaratnam Uthaiyashankar Shankar	WSO2
 * Sanjiva Weerawarana	WSO2

== Sponsors ==
 *	Paul Fremantle (

Nominated Mentors
 *	Dan Kulp (

Sponsoring Entity
 *     Incubator

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