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Reusability is important especially in Web application development because Web applications tend to be rapidly developed and frequently modified. There are several studies to improve the reusability by adapting modular techniques in software engineering. However, the reusability brought by previous studies is restricted to limited Web applications because the techniques are deeply depended on the...
Web applications, which are sometimes developed incrementally and iteratively, may result in program codes that are poorly organized. The notion of aspect can theoretically be introduced for better modularization, but trials occasionally fail because homogeneous aspects alone are not adequate. The approach taken here is to introduce feature analysis and to radically use heterogeneous aspects to implement...
Aspect-oriented programming (AOP) is a technique for modularizing crosscutting concerns (CCCs). A variety of CCCs can be found in typical Web applications. Most CCCs are scattered over Web-specific events such as page requests. AOWP, a PHP-based AOP framework, provides Web-specific aspect instantiations for dealing with session management and pointcut & advice mechanisms for capturing Web-specific...
In open systems, certain unfavorable situations due to unanticipated user behavior may be seen, which results in a violation of cross-cutting policy. This paper proposes a runtime monitoring method to check such problems. Since there is a large gap, a certain link is needed between the policy and runtime execution method. We employ a two-step checking approach; an offline symptom checking and a runtime...
We propose a new domain-specific aspect-oriented programming (AOP) mechanism for Web application development. A variety of crosscutting concerns such as access control and performance tuning are found in typical Web applications, but it is not easy to concisely modularize the concerns as aspects in current AOP languages because they do not provide pointcut mechanisms for directly handling events in...
Requirements changes sometimes cause a project to fail. A lot of projects now follow incremental development processes so that new requirements and requirements changes can be incorporated as soon as possible.These processes are called integrated requirements processes which integrate requirements processes with other development processes. We have investigated the requirements processes of a project...
AspectM, a UML-based aspect-oriented modeling (AOM) language, provides not only basic modeling constructs but also an extension mechanism called metamodel access protocol (MMAP) that allows a modeler to extend the AspectM metamodel. MMAP enables a modeler to construct domain-specific AOM languages at relatively low cost. In this paper, we show the overview of an AspectM support tool consisting of...
ccJava, a new kind of class-based AOP language, provides the weaving-interface mechanism in which the weaving can be realized by the component-and-connector architecture. The interface description constructs in ccJava can be considered a kind of architecture description language that takes into account the weaving. This paper provides a lightweight verification approach using Alloy, a structural modeling...
Refactoring is a method for improving a program's structure without changing its external behavior. Refactoring is a promising approach to assist reliable and safe software evolution. However, in aspect-oriented programming (AOP), it is not necessarily easy for a programmer to understand the overall behavior of a woven program because the weaving modifies the behavior. Unexpected bugs can be embedded...
In order to improve the quality of embedded software, this paper proposes an enhancement to the ESIM (embedded systems improving method) by combining an IFD (information flow diagram) with an Analysis Matrix to analyze unexpected obstacles in the software. These obstacles are difficult to predict in the software specification. Recently, embedded systems have become larger and more complicated. Theoretically...
AspectM, an aspect-oriented modeling language, provides not only basic modeling constructs but also an extension mechanism called metamodel access protocol (MMAP) that allows a modeler to modify the metamodel. MMAP consists of metamodel extension points, extension operations, and primitive predicates for defining pointcut designators. In this paper, a reflective model editor for supporting MMAP is...
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