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From Henry Saputra <henry.sapu...@gmail.com>
Subject Re: [PROPOSAL] MetaModel for the Apache Incubator
Date Thu, 30 May 2013 05:44:15 GMT
Hi Arvind,

For concern 1 I will let the lead engineer Kasper to answer. I believe if
the contributors already signed copyright agreement to Human Inference then
it should be fine since it means all code contributions belong to Human
Inference which  will then be transferred to ASF.

Someone might want to help clarifying this if I am mistaken.

As for concern 2, I have scanned the master pom.xml's dependencyManagement
section and looks like all dependencies are Apache 2.0 friendly. Again,
Kasper could help verify if this is the case.


- Henry



On Wed, May 29, 2013 at 10:31 PM, Arvind Prabhakar <arvind@apache.org>wrote:

> Henry,
>
> Thank you for submitting this proposal. I am very glad to be a mentor for
> this project and look forward to working with you and the broader
> community. I have a couple of comments with regards to the stated proposal
> -
>
> First - as noted in the proposal MetaModel has been an open source project
> with contributions coming from various corners of the world. Given this
> development model, do the individual contributors hold copyright over their
> contributed code? If so, you will likely need their consent in order to
> provide this code to the Incubator for the purposes of starting this
> project.
>
> Second - I noticed that the proposal calls out the LGPL dependency that
> will be removed before sourcing the initial drop. Along the same lines, I
> urge you to go through the the legal FAQ [1] to make sure that there are no
> other dependencies that merit removal or special handling.
>
> [1] http://www.apache.org/legal/resolved.html
>
> Regards,
> Arvind Prabhakar
>
>
> On Tue, May 28, 2013 at 11:20 AM, Henry Saputra <henry.saputra@gmail.com
> >wrote:
>
> > Dear ASF members,
> >
> > We would like to propose MetaModel for the incubator.
> >
> > Matt Franklin will be the Champion for this project and the proposal
> draft
> > is available at:
> >
> > https://wiki.apache.org/incubator/MetaModelProposal
> >
> > Looking forward to all of your suggestions and feedback.
> >
> > Thanks,
> >
> > Henry Saputra
> >
> >
> >
> > -------------------------------------------------
> >
> > = MetaModel – uniform data access across datastores =
> >
> > Proposal for Apache Incubator
> >
> > == Abstract ==
> >
> > MetaModel is a data access framework, providing a common interface for
> > exploration and querying of different types of datastores.
> >
> > == Proposal ==
> >
> > MetaModel provides a uniform meta-model for exploring and querying the
> > structure of datastores, covering but not limited to relational
> databases,
> > various data file formats, NoSQL databases, Salesforce.com, SugarCRM and
> > more. The scope of the project is to stay domain-agnostic, so the
> > meta-model will be concerned with schemas, tables, columns, rows,
> > relationships etc.
> >
> > On top of this meta-model a rich querying API is provided which resembles
> > SQL, but built using compiler-checked Java language constructs. For
> > datastores that do not have a native SQL-compatible query engine, the
> > MetaModel project also includes an abstract Java-based query engine
> > implementation which individual datastore-modules can adapt to fit the
> > concrete datastore.
> >
> > === Background ===
> >
> > The MetaModel project was initially developed by eobject.dk to service
> the
> > DataCleaner application (http://datacleaner.org). The main requirement
> was
> > to perform data querying and modification operations on a wide range of
> > quite different datastores. Furthermore a programmatic query model was
> > needed in order to allow different components to influence the query
> plan.
> >
> > In 2009, Human Inference acquired the eobjects projects including
> > MetaModel. Since then MetaModel has been put to extensive use in the
> Human
> > Inference products. The open source nature of the project was reinforced,
> > leading to a significant growth in the community.
> >
> > MetaModel has successfully been used in a number of other open source
> > projects as well as mission critical commercial software from Human
> > Inference. Currently MetaModel is hosted at
> http://metamodel.eobjects.org.
> >
> > === Rationale ===
> >
> > Different types of datastores have different characteristics, which
> always
> > lead to the interfaces for these being different from one another.
> > Standards like JDBC and the SQL language attempt to standardize data
> > access, but for some datastore types like flat files, spreadsheets, NoSQL
> > databases and more, such standards are not even implementable.
> >
> > Specialization in interfaces obviously has merit for optimized usage, but
> > for integration tools, batch applications and or generic data
> modification
> > tools, this myriad of specialized interfaces is a big pain. Furthermore,
> > being able to query every datastore with a basic set of SQL-like features
> > can be a great productivity boost for a wide range of applications.
> >
> > === Initial goals ===
> >
> > MetaModel is already a stable project, so initial goals are more oriented
> > towards an adaption to the Apache ecosystem than about functional
> changes.
> >
> > We are constantly adding more datastore types to the portfolio, but the
> > core modules have not had drastic changes for some time.
> >
> > Our focus will be on making ties with other Apache projects (such as POI,
> > Gora, HBase and CouchDB) and potentially renaming the ‘MetaModel’ project
> > to something more rememberable.
> > This includes comply with Apache Software Foundation license for third
> > party dependencies.
> >
> > == Current status ==
> >
> > === Meritocracy ===
> >
> > We intend to do everything we can to encourage a meritocracy in the
> > development of MetaModel. Currently most important development and design
> > decisions have been made at Human Inference, but with an open window for
> > anyone to participate on mailing lists and discussion forums. We believe
> > that the approach going forward should be more encouraging by sharing all
> > the design ideas and discussions in the open, not only just the topics
> that
> > have been “dragged” into the open by third parties.  We believe that
> > meritocracy will be further stimulated by granting the control of the
> > project to an independent committee.
> >
> > === Community ===
> >
> > The community around MetaModel already exists, but we believe it will
> grow
> > substantially by becoming an Apache project. With MetaModel used in a
> wide
> > range of both open and closed source application, both at Human Inference
> > (HIquality MDM), it’s open source projects DataCleaner, SassyReader and
> > AnalyzerBeans and by other parties (such as the Quipo data warehouse
> > automation project), we believe that the critical mass to sustain a
> > community is there.
> >
> > === Core developers ===
> >
> > MetaModel was founded by Kasper Sørensen in 2009. Later it was
> incorporated
> > as a core library by Human Inference, meaning that more than 20
> developers
> > have been involved in its making in this commercial setting. Furthermore
> a
> > smaller number of contributors have submitted patches for the library.
> > Others have started building other interesting data-oriented libraries on
> > top of MetaModel, for instance the ‘vasc’ open source project by Willem
> > Cazander, which is an implementation of the Java Persistence API (JPA)
> for
> > all the datastores supported by MetaModel.
> >
> > === Alignment ===
> >
> > MetaModel already makes good usage of existing Apache projects such as
> POI,
> > CouchDB and OpenOffice. Furthermore developers from the Apache Gora
> project
> > have indicated a need for a project like MetaModel to solve specific
> > uniform datastore access needs.
> >
> > == Known risks ==
> >
> > === Orphaned products ===
> >
> > The contributors and the contributing organization (Human Inference)
> have a
> > very strong dependence on MetaModel already and will continue to have
> that
> > for a long time. The continued need for this vendor to support new types
> of
> > datastores and maintain existing functionality will ensure that MetaModel
> > is not in the risk of being orphaned.
> >
> > === Inexperience with Open Source ===
> >
> > MetaModel is already open source, and has been so for many years. Main
> > contributors of the project have also contributed to other open source
> > projects such as DataCleaner and Apache Mahout. The openness of Apache is
> > arguably more extensive, but we are only encouraged and delighted to be
> > handling the project in a more open manner.
> >
> > === Homogenous Developers ===
> >
> > Frequent committers are currently located in Denmark, The Netherlands and
> > India. They are used to working in a distributed environment.
> >
> > === Reliance on Salaried Developers ===
> >
> > Initial committers for MetaModel will depends on salaried based
> developers
> > to contribute to this project, but given the dependence on MetaModel from
> > both commercial and open source projects, the project would continue
> > without issue if no salaried developers contributed to the project.
> >
> > The goal is build diverse community to contribute back to MetaModel
> > project.
> >
> > === Relationship with Other Apache Products ===
> >
> > MetaModel depends on several Apache products including: commons-lang,
> > commons-io, commons-codec, http-components, POI, CouchDB, OpenOffice and
> > XMLBeans.
> >
> > Furthermore MetaModel is built by Apache Maven.
> >
> > === An Excessive Fascination with the Apache Brand ===
> >
> > The ASF has a strong brand, and that brand is in itself very attractive.
> >
> > We are interested in joining the ASF in order to increase our contacts
> and
> > visibility in the open source world.
> > Furthermore, we have been enthusiastic users of Apache Software
> Foundation
> > projects, and would feel honored by getting the opportunity to join and
> > contribute back to the community.
> >
> > == Documentation ==
> >
> > Information on MetaModel can be found at: http://metamodel.eobjects.org
> >
> > === Initial source ===
> >
> > MetaModel has been developed since 2009 and have undergone a couple of
> > major changes (indicated by the 2.x and 3.x versions).
> >
> > The code is used in mission critical systems and is considered very
> stable
> > and high performing.
> >
> > The source includes a fork of the xBaseJ project’s code, which will be
> > removed upon incubation. This code was originally GPL licensed, but
> granted
> > with a special license to MetaModel to be forked and relicensed using the
> > current LPGL license of MetaModel.
> >
> > Removal of the xBaseJ code will effectively mean that the Apache variant
> of
> > MetaModel will not have support for dBase database files. We imagine that
> > the dBase module could live on as a separate pluggable module under the
> > LGPL license, outside of Apache.
> >
> > === External dependencies ===
> >
> > The dependencies all have Apache compatible licenses. These include BSD
> and
> > MIT licensed dependencies.
> >
> > == Required resources ==
> >
> > === Mailing lists ===
> >
> >  * metamodel-private (with moderated subscription)
> >  * metamodel-dev
> >  * metamodel-commits
> >
> > === Subversion directory ===
> > A subversion (http://svn.apache.org/repos/asf/incubator/metamodel/trunk/
> )
> > or git (https://git-wip-us.apache.org/repos/asf/incubator-metamodel.git)
> > repository is needed.
> >
> > Currently MetaModel’s code is hosted at
> > http://eobjects.org/svn/MetaModelbut will be moved to an Apache
> > repository.
> >
> > === Issue tracking ===
> >
> > JIRA MetaModel (METAMODEL)
> >
> > === Other resources ===
> >
> > We would like to have wiki page located at:
> > http://wiki.apache.org/MetaModel
> >
> > In later development phase a set of database servers (specifically
> MongoDB,
> > CouchDB, MySQL, PostgreSQL, MS SQL Server (Express), Firebird) should be
> > made available for integration testing.
> > Currently this is done internally at Human Inference.
> >
> > === Initial committers ===
> >
> > Kasper Sørensen (i.am.kasper.sorensen [at] gmail.com), Project Founder,
> > works at Human Inference
> >
> > Ankit Kumar (ak.ankitkumar [at] gmail.com), works at Human Inference
> >
> > Sameer Arora (sameer11sep [at] gmail.com)
> >
> > Henry Saputra (hsaputra [at] apache.org)
> >
> > Juan José van der Linden (delostilos [at] gmail.com), works for Quipu
> >
> > Arvind Prabhakar (arvind at apache dot org)
> >
> > Matt Franklin (mfranklin at apache dot org)
> >
> >
> > == Sponsors ==
> >
> > === Champion ===
> >
> > Matt Franklin (mfranklin at apache dot org)
> >
> > === Nominated mentors ===
> >
> > Henry Saputra  (hsaputra at apache dot org)
> >
> > Arvind Prabhakar (arvind at apache dot org)
> >
> > Matt Franklin (mfranklin at apache dot org)
> >
> > === Sponsoring entity ===
> >
> > The Apache Incubator.
> >
>

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