AOP for Inserting New Functions Dynamically

Aspect-oriented programming was developed to modularize cross-cutting concerns, which are additional requirements commonly included in various modules. It provides a new way to combine core concerns with cross-cutting concerns without influencing each other. In this study, we propose a way of adding new functions dynamically to completely developed BPEL programs, using aspect-oriented programming techniques. The proposed system uses a B2J engine, which provides services by converting a BPEL document into a Java program and by executing the Java program. This study shows a method of generating programs by weaving core concerns generated by B2J with cross-cutting concerns, including new functions to be added. This method has advantages that users can add additional functions in a low degree of coupling without modifying the existing B2J engine, therefore it is possible to easily develop and add additional functions in accordance with application domains. Lastly, two applications using aspect-oriented programming techniques are included to demonstrate the usefulness of our technique.