[C++] Fwd: xmlbeanscxx proposal

[Kenneth Tam <ke...@gmail.com>]

It appears that a C++ version of XMLBeans is much closer to being
reality at Apache -- see the post below forwarded from dev@xmlbeans.

Tuscany C++ folks, has there been consideration of leveraging an XML
mapping technology like this?  I know the support for multiple
databinding frameworks tends to be important in Java-land, so it
seemed at least worth asking.  This could also be used in the SCA
model loading code, though perhaps everyone is happy with the current
use of SDO there.

If there is interest, please cross-post back to
dev@xmlbeans.apache.org.  It'd be great to see more leverage between
C++ projects @ Apache.

---------- Forwarded message ----------
From: Allen Brookes <ab...@roguewave.com>
Date: Jul 18, 2006 4:50 PM
Subject: RE: xmlbeanscxx proposal (resubmitted)
To: Cliff Schmidt <cl...@gmail.com>
Cc: dev@xmlbeans.apache.org, xmlbeans-dev@xml.apache.org, Martin Sebor
<se...@roguewave.com>


I've included the proposal below.  It hasn't changed but I have
confirmed with people at Touk that the initial committers are correct.

Allen

-----Original Message-----
From: Cliff Schmidt [mailto:cliffschmidt@gmail.com]
Sent: Wednesday, July 05, 2006 2:53 PM
To: Allen Brookes
Cc: dev@xmlbeans.apache.org; xmlbeans-dev@xml.apache.org; Martin Sebor
Subject: Re: xmlbeanscxx proposal (resubmitted)

Allen,

Since we've gotten confirmation from David that he's still interested,
can you just copy the latest version of the proposal into a plain text
email and send to this list when you're ready.  Also, let us know what
sort of changes you've made (if any) since your March 29th proposal.
Even if there are no changes, it would be good to get a fresh copy in
everyone's inbox just before voting.

Thanks,
Cliff

------------------------------


This is a proposal for an xmlbeans subproject which should be discussed
here
and voted on at the xmlbeans PMC.  This is a modification of an earlier
proposal (May 15, 2005).  This proposal is being resubmitted on the
advice
of Cliff Schmidt.  The nature of the proposal changed when the company
Touk
offered to submit their xmlbeansxx code base as the initial code.  In
order
to move the project along as quickly as possible, we have elected to
take
full advantage of the Touk existing code and resources.  One result of
these
changes is the need for developers at Touk to act as committers.
Because
adding committers is done on the basis of merit, and because there is no
basis yet for judging merit on this project, Cliff has advised us to
start
over with a new proposal.


Proposal to create a C++ version of the Apache XMLBeans project

Submission date: ?? March 2006, Allen Brookes, (abrookes @ RogueWave
dot-com)

(0) rationale

Apache currently maintains the XMLBeans/Java project, a tool that uses
XML Schema as a basis for generating Java classes used to easily access
XML instance data. The goal of the XMLBeans/C++ project is to provide a
very similar user experience for C++ developers as that provided by the
XMLBeans/Java version. This includes generating strongly-typed C++
classes for the XML binding as well as providing low-level C++ APIs
enabling access to the raw, underlying XML content. Where possible, the
XMLBeans/C++ project will provide a nearly identical API and parallel
architecture to that provided by the Java counterpart, and will closely
mimic both features and schedule.

The project will be jump started with the contribution of xmlbeansxx, a
partial C++ implementation of XMLBeans from Touk
(http://touk.pl/web/en/index.html).  Rogue Wave Software will help jump
start this project by contributing considerable expertise in the area of
XML data bindings in C++ and C++ expertise in general.


(0.1) criteria

Meritocracy: The C++ version of the project should adhere to the same
open, merit-based community standards as other Apache projects.

Contributions and Core Developers: Code being contributed is an open
source partial implementation of XMLBeans in C++ created by Touk.

The community should be able to immediately jump in and begin work,
along side dedicated Touk and Rogue Wave personnel, to turn the initial
contribution into a feature-compatible version of XMLBeans for C++.

Community: The community around the Java version of XMLBeans is already
vibrant and growing. There is every reason to believe many of those
within the existing community have experience and/or general interest in
a successful, compatible C++ implementation of the toolset. This should
ensure an immediately active and vocal community, even if the primary
interest is in ensuring a similar experience between versions. The
original contribution for this project has been around for some time and
has generated some interest already.

Additionally, at least one member of an existing Apache project has
expressed interest in a project like XMLBeans/C++ to aid in his current
work. Higher-level projects such as Axis for C++ seem to be natural
beneficiaries of this work.


(0.2) known risks

Orphaned Products: The xmlbeansxx project has been around for some time
now and development has been active throughout this time.  There is
every reason to expect that this commitment will continue after the
transition to Apache.

Inexperience with Open Source: Rogue Wave has been gaining experience
with open source through the cxx standard library project.  Touk has had
experience with open source through the xmlbeanscxx project.

Initial Reliance on Salaried Workers: Due to the rapid process of
transitioning to work on the open source XMLBeans/C++ project, the
listed contributors are all inside the commercial realm. We expect this
list of external volunteers to grow significantly after the initial
public code drop.

Licensing, Patents, Miscellaneous Legal: Files in the contributed code
include open source licenses.  Legal review will be needed to determine
if this is sufficient.


(1) scope of the subproject

The XMLBeans/C++ subproject will conform to the identical scope as that
laid out for the partner Java project. Special care will be taken to
implement features and add conveniences that would be expected by a C++
developer.


(2) identify the initial source for subproject code

The initial source for the subproject will be the xmlbeanxx project from
Touk.  Some background information may be found on this product at:

Xmlbeansxx home page (http://xmlbeansxx.touk.pl)


(3) identify the ASF resources to be created


(3.1) mailing list(s)

cxx-dev

cxx-user

cxx-commits



(3.2) SVN repositories

xml-xmlbeanscxx


(3.3) Bugzilla

xml xmlbeanscxx


(4.0) identify the initial set of committers

This is a preliminary list that will be updated with volunteer members.

Allen Brookes (ABrookes @ RogueWave dot-com)

David Haney (David.Haney @ RogueWave dot-com)

Tomasz Wielga (tw @ touk dot-pl)

Rafal Rusin (rr @ touk dot-pl


(5) identify apache sponsoring individual

Cliff Schmidt, of the XMLBeans/Java project, has volunteered to sponsor
this project.

Cliff Schmidt (CliffS @ Apache dot-org)


(6) open issues for discussion

The original code contribution has an API that is very similar to that
of the Java version.  However, there are parts of the API that have not
yet been implemented that may be considered essential by users of the
Java version wishing to migrate or co-develop applications.

Addressing this deficiency is considered a high priority task for the
C++ project.

This task is currently underway at Touk and will be continued after the
code has been contributed.

The contributed C++ code is based on its own code generator. It is
probably desirable to consolidate both C++ and Java projects under the
same code generator, most likely the one already included in the Java
version of the XMLBeans.

This is not considered a priority-1 task at this point, more of a long
term goal and convenience. If it saves time in other priority tasks it
will be looked at closely, however.

Platform support

Unlike Java, the C++ port will have significant issues around platform
and compiler support. In order to help with this the project will be
using the C++ standard library, and may in fact benefit greatly from the
proposed Apache C++ StdLib (STDCXX). Initially the native StdLib will be
used.

Good platform support will be very important so even the early builds
should be done on Windows and Linux, and preferably at least one Unix
variety. Long term the matrix should be very large.


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Re: [C++] Fwd: xmlbeanscxx proposal

[Pete Robbins <ro...@googlemail.com>]

 Thanks for bringing this to our attention. I'll certainly look into seeing
how we can use this in Tuscany.

Cheers,

-- 
Pete