Enhancement Of Join Point Designation Diagrams (Jpdds) With Procedural Logic And Timing Constraint For Aspect-Oriented Modeling
Aspect-Oriented Software Development (AOSD) is a technology that helps achieve better Separation of Concern (SOC) by providing mechanisms to localize cross-cutting concerns. Aspect-Oriented Modeling (AOM) is a design technique in AOSD which attempts to separate crosscutting concerns in the earlie...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2010
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/12442/1/FSKTM_2010_3A.pdf |
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| Summary: | Aspect-Oriented Software Development (AOSD) is a technology that helps achieve better
Separation of Concern (SOC) by providing mechanisms to localize cross-cutting
concerns. Aspect-Oriented Modeling (AOM) is a design technique in AOSD which
attempts to separate crosscutting concerns in the earliest steps of software development.
Queries on join points are an essential part of AOSD. Join point queries are necessary to
identify all relevant points in a program at which aspectual adaptations need to take place.
Finding appropriate means to designate such sets of relevant join points is a highly active
field of research in AOSD.
Join Point Designation Diagrams (JPDDs) are means that visualize join point queries
graphically and separately from the adaptation specification. They provide a visual means
to constrain the selection of join points based on static and dynamic, structural and
behavioral context. Based on the latest researches on JPDDs, it has been lacking of support in procedural logic by JPDDs such as loops, alternative structures, and
conditional branching between object interactions in the selection criteria of the join
points. It causes some join points could not be modeled by JPDDs when join point
specifications get complex in aspect-oriented programs. There is another issue in JPDDs
which is lack of supporting timing constraints in the join points. There is no way or
notation to visualize any timing constraint in a JPDD. Since time constraint is a major
issue in real time systems, this lack of support makes a gap between real time system
design and join point diagrams.
In order to solve the stated problems, three new extension models are introduced in this
research based on UML 2.0. Loop Condition Constraint Model (LCCM) and Alternative
Constraint Model (ACM) are presented which aim to support procedural logic and reduce
the redundancy of the message flows in JPDDs. Time Constraint Model (TCM) is
introduced to fill the gap between real time systems and JPDDs.
Some examples are used to evaluate the proposed models. Each example firstly is
modeled by JPDDs without the proposed extensions and then is modeled by JPDDs with
the proposed extensions. The results of the experiments showed that the proposed
extensions are able to support the missing structures and eased the designation of join
points. Introducing the proposed extensions in this thesis creates new opportunities in the
join point selection research. |
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