Michael Havey

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Developers of workflow-based applications with the Business Process Modeler (BPM) component of BEA WebLogic Integration Version 7 use a powerful, feature-rich, graphical editor, called Studio, to design workflow templates and to monitor the progress and state of runtime instances of templates. As Figure 1 shows, Studio is an online tool: it calls the WebLogic Integration server application to retrieve information about workflows or to commit changes. This information is ultimately stored in a database; internally, much of what the WLI application does is converse with the database.   But what if the server goes down? Studio is rendered inoperative. Developers and other users can no longer monitor workflows; no such tools are provided with WebLogic Integration. The obvious solution is to look directly in the database for relevant workflow information. But the Integr... (more)

Modeling Web Services Choreography with New Eclipse Tool

Choreography is the dark continent of Web services: few onlookers have traveled there, and many question whether there are any riches to be brought home from the trip. In the first place, choreographies bear such a striking resemblance to business processes that the novice might think that the two types of artifacts are indistinguishable. After all, isn't choreography just a way to describe what a business process does (i.e., it choreographs the actions of its participants)? And then there is the dearth of choreography tools; until recently choreography was a topic learned by re... (more)

BPM Theory for Laymen

In most software topics, the boundary between theory and practice in software is clearly demarcated: theory is for academics who seldom descend from the ivory tower, practice is for industry professionals who have long forgotten the concepts and application of theory. In concurrency, for example, most developers either know or have programmed semaphores, but few remember the conceptual underpinnings devised by Dijkstra. But Business Process Management (BPM) - a key Web services technology with close ties to Web services choreography - belongs to a rarer category, in which theory ... (more)

Rating WebLogic Integration 8.1 on Process Patterns

Every aircraft can take off, fly straight, and land, but few are capable of the dazzling rolls and loops displayed at air shows. When judged on aerobatics, some airplanes are superior to others. Every BPM process language, analogously, can implement basic sequential control flow, but most languages struggle to support the most advanced splits, joins, loops, and synchronizations. These process maneuvers are known as patterns; like an aerial maneuver through thin air, a process pattern is a kind of movement through a business process, modeled as a particular arrangement of activit... (more)

BPEL SOA and Web Services For Java

The Business Process Execution Language for Web Services (BPEL4WS, usually shortened to BPEL, which rhymes with "people") is, as its name suggests, a language for the definition and execution of business processes. Though it is not the only standard process language, BPEL is the most popular, and it's beginning to saturate the process space. IBM, Microsoft, and BEA wrote the BPEL specification and subsequently handed it over to the WSBPEL technical committee of the OASIS organization (of which they are members) for standardization. The conceptual roots of BPEL coincide exactly w... (more)