Hi Seref, Thanks for update. Look forward to the release of the project.
Cheers, Rong On 6 September 2011 19:32, Seref Arikan <serefarikan at kurumsalteknoloji.com> wrote: > Dear members of the openEHR community, > > We announced Project Bosphorus from UCL, CHIME at the end of 2010 and > have been preparing an update on progress, including access to source > code and a web services implementation, for testing purposes . Recent > questions on the openEHR lists are relevant to the progress made and > the following is therefore posted as an interim update, indicating the > open source materials that we expect to release shortly, as a further > component of the Opereffa platform, that has been under development > here since 2008. > > The Bosphorus project was initiated in order to improve Java > implementations of openEHR, by providing direct access to the Eiffel > code base, which has been made available as open source software by > Ocean Informatics. > > Over the past year, we have been working on a new method for > connecting Java technology to the Eiffel code base. For simple > applications, and in a technically simple scenario, such connectivity > is not hard to construct. However, we have realized that the outcomes > we wish to achieve must address more complex and demanding > requirements. > > It is quite hard to imagine a successful openEHR implementation today > which does not have a service-based design. Web-based approaches are > strongly dominating everything else, and realizing their advantages in > openEHR has required detailed exploration of a number of architectural > and technological design choices. Scalability, performance and > technology neutral access to underlying functionality are key > considerations for any modern architecture. > > This study led us to develop a software layer which would go beyond > out of the box integration options for Java and Eiffel. Especially in > relation to scalability and stability requirements, it proved > extremely hard to develop a satisfactory solution with available out > of the box options for these two technologies. Therefore, we went on > to develop a custom communication channel, using two high performance, > open source frameworks: ZeroMQ from iMatix Corporation and Protocol > Buffers from Google. We had earlier adopted a service-focused design > for our related research on a new openEHR-based data analysis > framework, and for this the new Bosphorus connectivity layer needed to > be exposed to other software components, as a web service. > > We are excited by the potential of the evolving Bosphorus > architecture, since it allows us to expose the very mature and capable > open source Eiffel code base as a Java web service, with excellent > characteristics in terms of scalability and performance. We believe > the design will prove an important new approach to system > implementation, as we start to pull key low level openEHR > functionality into web services. Components, such as archetype parsers > and new functionality required to exploit ADL 1.5, have proven to be > good early candidates for such web services. > > By slowly moving to provide key openEHR functionalities as web > services, we are aiming to lower current barriers to openEHR > implementation, very significantly. To demonstrate the outcomes > achieved to date, using this approach, we will be deploying a test web > service under the Opereffa Studio Project, using Bosphorus, as > previously announced. This test web-service,will provide the > functionality of an archetype parser, with outputs in the form of > openEHR XML schema compatible XML, and JSON. > > We are currently finalising our first full implementation and will be > providing further details and access to the web service, shortly. > > We would appreciate feedback regarding the approach and, later on, > regarding the use of the test web service. This is an open source > project, and source code will be available with the release. > > We would like to thank Thomas Beale for his excellent open source > Eiffel code, and his support and feedback during the development of > Bosphorus. > > Seref Arikan and David Ingram ?UCL, CHIME > _______________________________________________ > openEHR-technical mailing list > openEHR-technical at openehr.org > http://lists.chime.ucl.ac.uk/mailman/listinfo/openehr-technical >
