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Gorilla Interprets, Executes UML Models Directly


Slower execution offset by faster development time, company claims

By David Rubinstein
November 15, 2003 —  (Page 1 of 2)
A new runtime engine that can execute UML models directly, without relying on code generators, is going into beta next month with the promise of eliminating "develop" from the design-develop-test-deploy cycle.

The new Gorilla Execution Engine was developed at Gorilla Logic Inc., which was founded by three former Sun consultants. That experience gave the founders valuable insight into how projects were being developed, what the pitfalls were, and how to overcome them in a timely and cost-effective way, according to Gorilla CEO Stu Stern.

The Design Edition of the execution engine, expected to be ready for general release in March 2004, is designed for modelers and architects already familiar with UML, Stern said, and lets them run prototypes of their designs prior to release into the implementation phase.

Using only proprietary extensions of the UML Class Diagram, modelers can use any design tool to create high-level business domain models and business rules, which become the executable "code" at runtime, Stern said. That model is then run on the Gorilla engine, which he described as a Java application that runs on any J2EE-compliant application server.

The advantage of executing UML directly, the company claims, is in the amount of development time saved to get an application up and running. Brendan McCarthy, chief technology officer at Gorilla Logic, acknowledged there is a minor performance hit to this approach, but he said the company didn't think it was significant when compared with the reduction in time to complete a project.

Gorilla Logic's approach, McCarthy argued, enables greater control over the complexity that underlies enterprise Java applications, because users of the new platform can express many of these complexities in the model. "We won't be as fast as handcrafted code," Stern said. "But we've been hearing that question for 20 years at Sun [regarding the performance of Java, an interpreted language]. The answer is, yeah, it's slower, but it's fast enough. And, you're getting massively faster development time."

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