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Excellent Decision Table based Rules Engine implementation in Java
DT4J is a Java implementation of Decision Table based rules engine. It supports excel based and an editor based Decision Table authoring. It integrates with Spring expressions (SpEL) to express conditions and actions. Put together it's a power rules engine.
The project strives to provide an editor for the Business Motivation Model by the OMG. The Business Motivation Model specification provides a scheme or structure for developing, communicating, and managing business plans in an organized manner.