面向方面的编程

传统的OOP编程无法完全满足对关注点的分离,因而无法满足可理解与可追踪的软件特征。AOP提供了一种方法对关注点进行分离与组合,使得程序的可理解性与可追踪性得到加强。     

AOP event manager in open service gateway 〖WT5"HZ〗Abstract:〖WT5"BZ〗 〖WT5”HZ〗Key words:〖WT5”BZ〗

The Open Service Gateway Initiative (OSGi) has played an important role in ubiquitous environments that support interoperability among embedded devices, such as home appliances and network devices. However, the OSGi does not have a common event mechanism yet, and it is difficult to communicate among services asynchronously. In the present work, a common event manager, AspectOriented Event Manager (AOEM), was designed on an OSGi framework. AOEM supports services to generate and provide notification of events. This paper presents the implementation of AOEM as an OSGi bundle with AspectJ. The experiment on transferring between device service and application service demonstrate that AOEM provides good abstraction of the services and convenience.     

AOP及其在状态机工作流中的应用

面向切面编程(Aspect-Oriented Programming,简称AOP)作为一种新的编程技术正日益引起人们的关注.文章介绍了AOP产生背景和理论价值,并结合作者所设计的状态机工作流框架,详细讨论了如何通过在该框架中引入AOP机制来克服纯面向对象编程的不足,从中分析了AOP的优势和应用价值,最后对AOP和OOP的关系进行了讨论.     

AOP与H^∞＋COP

证明了Ｈ＾∞＋ＣＯＰ是ＡＯＰ的子代数，同时对ＡＯＰ中属于Ｈ＾∞＋ＣＯＰ的函数进行了一定的刻划，从而为解决Ａｘｌｅｒ中的猜想ＡＯＰ＝Ｈ＾∞＋ＣＯＰ作了一些必要的阶段性工作。     

Design and implementation of DBC based on dynamic AOP

Traditional approach of design by contract, due to mixing the contract code with application code, is difficult for the extensibility and reusability of software system. This paper presents a framework named JADBC for design by contract based on Aspect-Oriented Programming (AOP) to resolve these problems. By providing a new modularized element, aspect, the framework successfully separates the contracts in design by contract, from functional codes. The implementation of this framework is based on dynamic AOP which can have the contract changed at runtime, consequently, enhancing program flexibility. JADBC framework modularizes the contracts in a clear-cut fashion that is easier to design, implement, and maintain. Biography: WEN Jing (1982–), female, Ph.D. candidate, research directions: software engineer, aspect-oriented software development.     

基于AOP和Template模式实现数据持久化处理框架

本文介绍了DAO模式、Template设计模式、AOP技术以及JAVA反射机制,并详细介绍了利用上述技术实现J2EE报表系统中的数据持久化处理框架。该框架利用AOP解决事务横切性问题,利用模版设计模式解决项目小组中多人协同开发的问题,实现了DAO层持久化处理方式和编码方式的统一,并在实际应用中适应报表系统的快速数据存取需求。     

废水深度氧化过程(AOP)中的自由基

对废水的深度氧化，包括光化学氧化，超声波氧化过程中自由基的种类、捕获技术与氧化方式进行了简述。     

基于切面的交易中间件监控技术

交易事务处理是企业软件开发过程中的重点,交易事务的安全性、独立性和可恢复性成为评价企业级软件开发的主要性能指标。文章提出了在传统交易事务中间件的基础上采用切面监控技术监控企业软件中的交易事务信息,AOP声明式的方式注册系统监控服务,通过依赖注入与反转控制的方式来注入与控制常驻服务。以达到进一步降低服务对象之间的依赖性、提高系统性能的目的。     

细粒度角色访问控制模型及其应用

针对传统的角色访问控制模型权限控制粒度较大、权限控制代码横切业务功能模块、难以有效支持软件复用等问题．提出了一种细粒度角色访问控制模型。该模型通过引入外权限和内权限细化了权限控制粒度．并通过AOP技术实现了内权限的动态配置,提高了组件复用度和模块独立性。该模型已在实际项目中得到应用,验证了模型的正确性和有效性。     

事件驱动编程在面向方面软件开发中的应用

基于事件驱动编程原理,提出方面事件处理器(Aspect Event Handler,AEH)方法,用以有效地处理面向方面软件系统中出现的各类横切功能的调用与维护.结合其在 Java EE 银行业务系统 CrossDebit 相关模块开发中的应用,详细介绍 AEH 方法的实际应用流程和技巧.