This paper explains in deep one of the trickest feature of the BPEL specifications: "The correlation". In the first part, we explain some basic concepts needed for a good understanding. Then, through a simple business process, we introduce the different steps you have to understand for designing a multiparty conversation with a BPEL engine. In order to enjoy reading this paper, we assume that you have a first experience with WSDL and BPEL document and you are able to read and understand them. You will find a complet and royalty free Powerpoint presentation associated with this technical paper as well. You can use or modify it for personal and professional training or lecture.
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This paper describes the best practices for Soap header management with Open-ESB. We noticed that Open-ESB developers often face difficulties when dealing with Soap Header and WSDL documents. In fact, JBI 1.0 imposes to design services interfaces only with the abstract part of the WSDL document where nothing has been plan to support protocol characteristics like Soap Hearders. Moreover, JBI does not propose "hooks" or interceptor to modify the Soap messages with low-level languages like java or C#. The aim of this tutorial is to find an easy way to manage Soap Headers in Open-ESB by using the abstract part of WSDL documents.
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In this paper, we propose a simple method to set Open-ESB applications as intermediate between provider and consumer of services with a minimal disturbance for the two tiers. (pdf only)
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Software application look like more and more to live organisms. However, we noticed that IT teams organisation neglect this evolution and remain archic and imutable for budget and power reasons. (pdf)
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For an IT Architect, choosing a protocol is often a difficult choice. Each protocol combines complex characteristics that need to be identified and understood. In this technical paper, we propose a tutorial targeted for non-architects in order to help them choosing for the right protocol. (pdf)
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Object-Oriented Programming (OOP) is a concept created and developed in the 70s. Today, OOP has become a standard. However, the rise of distributed applications and the need for interoperability have highlighted the limitations of OOP. With the help of simple examples, this paper explains in details the impact and consequences of OOP limitations. (pdf)
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The realization of a prototype is always a race against the clock. The installation and the configuration of a relational data base and the object-relational mapping further adds to delays. Pymma proposes the use of an object database to solve this difficulty. The why and the how of this proposition are detailed in this paper. (pdf)
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The Sea Lion is the only sea dweller who takes refuge on land when it is hunted. For that reason, in the past, it was even considered a land animal. Consider your technology teams, towards which technologies do they go when they are in danger? This is for you to conclude! (pdf)
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Offshore development is very successful with internationnal companies. They save money with low manpower. But paradoxically, Paradoxalement, this will entail loss of resourcefulness and competitiveness (pdf)
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Peters Robers Chief Architect at BA gives us an interview and his point of view on SOA (pdf)
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