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ABSTRACT
Information systems based on the World Wide Web increased the impact of concurrent programs. Such increase demands the definition of methods for obtaining safe and efficient implementations of concurrent programs, since the complexity of implementation and tests in concurrent environments is bigger than in sequential environments. This work defined guidelines to restructure object-oriented software in order to modularize concurrency control using aspect-oriented programming. Those guidelines are supported by a concurrency control implementation that guarantees system correctness without redundant concurrency control, both increasing performance and guaranteeing safety. We define abstract aspects that constitute a simple aspect framework that can be reused to implement concurrency control in other applications. The achieved modularization makes the concurrency control easy to evolve and decreases the complexity of other parts of the software, such as business and data management modules, by decoupling concurrency control code from them. REFERENCES
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