遗产系统

基于WebServices的遗产系统重构模型研究

Study of Construction Model for Legacy System Based on Web Services

NET平台实现了其中的主要构件，即用WEBService将遗产系统分层封装为服务组件。

NET in Windows . This is layered packaging Legacy System as Service Conponent with Web Service .

基于SOA的校园遗产系统集成模型研究

Research on the Integrated Model of Campus Legacy System Based on SOA

随着Internet计算技术的迅速发展，将遗产系统迁移到Web平台逐渐成为一种必需。

As the rapid growth of Internet computing , it 's critical to migrate Cobol-like legacy system to the distributed web platform .

Aspect挖掘的目标是识别遗产系统中的横切关注点，为遗产系统的面向方面改造提供支持。

Aspect mining tries to identify crosscutting concerns in legacy systems and thus supports the adaptation to an aspect-oriented design .

与此同时，越来越多成功的软件系统变成遗产系统（LegacySystem），软件演化的重要性和普及性越来越明显。

At the same time , more and more software systems have become legacy system . The importance and prevalence of software evolution is getting more obvious .

该模型框架考虑了基于WebServices的企业应用集成的必要内容，包括WebServices事务、WebServices安全、WebServices组合、WebServices查找、WebServices互操作和遗产系统转化为WebServices等许多方面。

WS-IMF includes many indispensable aspects such as transaction , security , composition , finding methods of Web Services and method how to convert legacy system into Web Services .

在集成实现中，通过将部分旧组件封装为Web服务或新创建Web服务的方式来实现系统集成中的各种服务，通过对遗产系统进行局部改造实现了对所需服务的调用。

All services were implemented by means of encapsulating the components of legacy software or creating new web services , calling the needed services by modify the legacy software partly .

其中在功能Agent包装中，采用COM技术形成统一的调用接口，解决了遗产系统异构性的问题。

In the wrapper process of function agent , COM technology is used to form a unified interface which solves the heterogeneity problem of the system .

根据Agent的功能行为，将Agent分为遗产系统Agent和协调Agent，并在此基础上定义了各Agent的功能，介绍了Agent的实现工具&JADE。

According to the function and the action , Agent is classified into enterprise Agent and harmony Agent . And still the function of each Agent is defined while the implementation tool of Agent : JADE is introduced .

目前，RBAC被广泛地应用于各个领域开发的软件系统，但却未被遗产系统普遍采用。

Nowadays , RBAC is widely applied in most software of various fields , but it may not be used in legacy systems .

该方法将聚类分析与程序静态分析方法相结合，基于方法间的直接调用关系，识别面向对象遗产系统中的横切关注点，根据方法调用相似性自动形成候选Aspect集。

Both the clustering analysis technology and static source-code analysis were used in this method to identify crosscutting concerns from object-oriented legacy system . Direct method invocation relationship was used as the characteristics of scattering code . Candidate Aspects set was generated automatically after clustering .

以J2EE架构面向业务过程企业应用集成解决方案与实现途径，有力地促进了企业实现各种遗产系统与新的企业应用系统的集成，更进一步促进企业加速实现信息化工程。

And adopting the enterprise application integrated framework of enterprise business process management is introduced with J2EE framework . It will promote the enterprise to integrate effectively all kinds of legacy systems with new application systems , and can accelerate the information project implement of manufacturing enterprise .

这样的资产包括组件、程序库，以及遗产系统。

Such assets include components , component libraries , and legacy systems .

如果遗产系统配置较全（源代码、设计记录以及其它文档资源），系统理解要相对容易一些。

Legacy systems understanding become very easy , if their configuration are full .

不同的遗产系统往往采用不同的访问控制策略。

Different legacy systems may make organize access control policies in different forms .

遗产系统中最可靠甚至唯一可靠的信息是系统本身的源代码。

The codes are the most reliable even the only reliable information in legacy system .

一种面向方面的遗产系统改进方法

An Aspect-oriented Method of Improving Legacy Systems

逆向工程是设计恢复的过程，是对遗产系统的有效利用。

Reverse engineering is a process of design recovery , which can use legacy system effectively .

软件再工程提供了一条把遗产系统转化为可演化系统的现实可行的途径。

Software reengineering provides a practical and feasible approach to translate legacy system into evolutive system .

实际应用表明，该系统移植框架可以适用于大多数基于图形用户界面的遗产系统。

Practical applications have demonstrated that this framework can be applied to most GUI based legacy systems .

逆向工程是软件工程研究的一个重要领域，它的主要内容是对遗产系统进行正确的理解。

As an important part of Software Engineering research , Reverse Engineering can help us understand Legacy System correctly .

为了将传统方法开发的系统转换成面向方面的系统，实现关注分离，提出了一种从遗产系统中发现横切关注点的方法。

A novel method to discover crosscutting concerns from source-code for transformation from legacy system to Aspect-oriented system was proposed .

软件再工程强调以更高的投资收益率，来提高遗产系统的性能；

Software reengineering put emphasis on the rate of high investment and yields to improve the performance of legacy system .

如何更好地利用遗产系统来开发新系统，正在成为当前软件工程研究的一个重要方向。

How to evolve legacy systems into new systems is becoming one of the focuses of current software engineering researches .

为了构建供应链信息系统，就必须解决分布性问题，异构性的问题、遗产系统的问题、供应链中的各功能模块的协作问题。

Constructing supply chain information systems , distributing questions , heterogeneity problems , various function module cooperation questions must be solved .

为了充分有效地利用这些有用资产，对遗产系统进行持续性演化就显得十分重要。

In order to fully effective use of these useful assets , the continuing evolution of legacy systems is very important .

因此，为了充分有效地利用这些有用资源，对遗产系统进行持续改造使之能满足客户的需要变得十分重要。

Therefore , in order to use these resources effectively and efficiently , it is very important to update legacy systems .

事实证明不用全面开发新的系统，而是将遗产系统集成到新的软件环境之中，是一种不错的选择。

It is a good choice that instead of developing a new system comprehensively , integrating the legacy system to a new software environment .

由于不再适应实际需求，单一的遗产系统需要进行维护和演化外，还需要对多个遗产系统进行集成。

Along with the actual requirements of organization , single legacy system needs maintenance and evolution . Besides , a variety of legacy systems required to be integrated .