The book uses the emerginglingua fnnca, the Unified Modeling Language, to talk about the various aspects of distributed object design and to indicate the support that engineers might expect from object-oriented middleware in the design of their distributed object systems. How to use this book There are a lot of books in the market that explain particular distributed object systems to sohvare engineering professionals. This book is written mainly for a student audience. It Preface xiii will be most usell on finalyearundergraduateprogrammes or on taughtpostgraduate courses.

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Show Context Citation Context Emmerich C. Mascolo A. Finkelsteing cs. This one-day tutorial is aimed at software engineering practitioners and researchers, who are familiar with objectoriented analysis, design and programming and want to obtain an overview of the technologies that are enabling component-based development.

We introduce the idea of component-based devel We introduce the idea of component-based development by defining the concept and providing its economic rationale. We give an assessment of the maturity of each of these technologies and sketch how they are used to build distributed architectures. Keywords: Component-based development, middleware, enterprise applications 1. We demonstrate how XML and related technologies can be used for code mobility at any granularity, thus overcoming the restrictions of existing approaches.

By not fixing a particular granularity for mobile code, we enable complete programs as well as individual lines of code to be sent across the net By not fixing a particular granularity for mobile code, we enable complete programs as well as individual lines of code to be sent across the network. We define the concept of incremental code mobility as the ability to migrate and add, remove, or replace code fragments i.

The combination of fine-grained and incremental mobility achieves a previously unavailable degree of flexibility. We examine the application of incremental and fine-grained code mobility to a variety of domains, including user interface management, application management on mobile thin clients, for example PDAs, and management of distributed documents. We demonstrate how the use of synchronization primitives and threading policies in object middleware can lead to deadlocks.

We identify that object middleware only has a few built-in synchronization and threading primitives and suggest to express them as stereotypes in UML models. We define the s We define the semantics of these stereotypes by a mapping to a process algebra. Finally, we apply model checkers to this process algebra notation and show that we are able to detect the possibility of deadlocks that can then be related back to the UML models. Like so many other technologies, middleware has grown from being a research topic into a maturing commercial technology.

A large number of distributed systems are built using middleware, which shields the use of networking protocols from the application programmer.

There are different categories of mid We refer to this primitive as an object request. Objects that are distributed across different machines have the potential to be executed concurrently. A client object that resides on one machine executes concurrently with the server object that r We describe how objectoriented programming evolved into local component models, such as Java Beans and distributed object technologies, such as the Common Object Request Broker Architecture Show Context Citation Context The tutorial will look at three mainstream object middleware technologies used in industry.

Java RMI is most suitable when the system purely consists of Java objects that need to communicate on a distributed system. Levels of abstraction and layers for a request initiated by the client UML dep Levels of abstraction and layers for a request initiated by the client UML deployment diagram. User accounting, login procedures and access control as well as connection state information is supported directly in the framework. This work covers two more aspects: a security discussion for the provided model with a special focus on security issues for an ITS and a usability discussion for variou Powered by:.


Book Review: Engineering Distributed Objects



Engineering distributed objects



Wolfgang Emmerich


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