Java Distributed Objects

This book is a comprehensive guide to Java distributed computing. The book covers networking, distributed computing architectures, advanced Java facilities, security, data managing, and specific distributed computing techniques including sockets, Remote Method Invocation, Java servlets, Microsoft's Distributed Component Model, and the Common Object Request Broker Architecture.

Distributed computing and Java go together naturally. As the first language designed from the bottom up with networking in mind, Java makes it very easy for computers to cooperate. Even the simplest applet running in a browser is a distributed application, if you think about it. The client running the browser downloads and executes code that is delivered by some other system. But even this simple applet wouldn't be possible without Java's guarantees of portability and security: the applet can run on any platform, and can't sabotage its host.Of course, when we think of distributed computing, we usually think of applications more complex than a client and server communicating with the same protocol. We usually think in terms of programs that make remote procedure calls, access remote databases, and collaborate with others to produce a single result. Java Distributed Computing discusses how to design and write such applications. It covers Java's RMI (Remote Method Invocation) facility and CORBA, but it doesn't stop there; it tells you how to design your own protocols to build message passing systems and discusses how to use Java's security facilities, how to write multithreaded servers, and more. It pays special attention to distributed data systems, collaboration, and applications that have high bandwidth requirements.In the future, distributed computing can only become more important.Java Distributed Computing provides a broad introduction to the problems you'll face and the solutions you'll find as you write distributed computing applications.Topics covered in Java Distributed Computing: Introduction to Distributed Computing Networking Basics Distributed Objects (Overview of CORBA and RMI) Threads Security Message Passing Systems Distributed Data Systems (Databases) Bandwidth Limited Applications Collaborative Systems

Distributed Object Computing teaches readers the fundamentals of CORBA, the leading architecture for design of software used in parallel and distributed computing applications. Since CORBA is based on open standards, it is the only effective way to learn object-oriented programming for distributed systems. This language independent book allows material to be taught using Java, C++ or other Object Oriented Programming Languages.

This third edition explains the underlying technology, Java classes and interfaces, component model, and runtime behavior of Enterprise JavaBeans. In addition, the book contains an architecture overview, information on resource management and primary services, design strategies, and XML deployment descriptors.

Concurrency is a powerful technique for developing efficient and lightning- fast software. For instance, concurrency can be used in common applications such as online order processing to speed processing and ensure transaction reliability. However, mastering concurrency is one of the greatest challenges for both new and veteran programmers. Softwar

This book constitutes the thoroughly refereed post-proceedings of the Second International Workshop on Engineering Distributed Objects, EDO 2000, held in November 2000 in Davis, California, USA.The 15 revised full papers presented together with session surveys were carefully reviewed and selected from 30 submissions. The book presents topical sections on middleware selection, resource management, architectural reasoning, distributed communication, advanced transactions, and service integration.

Distributed Object Architectures with CORBA is a guide to designing software comprised of distributed components. While it is based on OMG's Common Object Request Broker Architecture (CORBA) standard, the principles also apply to architecture built with other technology (such as Microsoft's DCOM). As ORB products evolve to incorporate new additions to CORBA, the knowledge and experience required to build stable and scalable systems is not widespread. With this volume the reader can develop the skills and knowledge that are necessary for building such systems. The book assumes a familiarity with object-oriented concepts and the basics of CORBA. Software developers who are new to building systems with CORBA-based technologies will find this a useful guide to effective development.

Inhaltsangabe:Abstract: Distributed computing is playing an increasingly important role in many areas of industry, the sciences, in business processes and in the development of new and emerging technologies. It facilitates inter-process communication across heterogeneous networks, hardware platforms and operating systems. We compare four distributed and object-oriented architectures: Sockets in Java 2, Sockets in Berkeley Unix, Remote Method Invocation in Java - RMI - and the Common Object Request Broker Architecture - CORBA - of the Object Management Group consortium. We provide a survey of each of the distributed architectures including its constituting components. To present the architectures in a practical context, we amend each survey with a corresponding application framework. We conclude with a comparative study of the Socket APIs in Java 2 and in Berkeley UNIX and the distributed object models of Java RMI and CORBA. Although the distributed object model as defined by CORBA represents an adopted industry standard, Java RMI has features unattainable by CORBA. The first part of the discussion offers a comprehensive overview of the Socket architecture in Java 2 and Berkeley UNIX and the distributed object model of Java Remote Method Invocation and the Common Object Request Broker Architecture. The second part concludes the discussion with a comparative study of selected features with emphasis on the Common Object Request Broker Architecture and Java Remote Method Invocation. Chapter 1 - The TCP/IP Protocol Suite: We provide an introductory overview of the TCP/IP protocol suite and its architecture including layers and protocols. The TCP/IP architecture is based on three concepts: processes, layers and protocols. There is no official protocol model as compared to the OSI proposal. We can however devise a logical structure of the TCP/IP protocol suit based on the associated protocols and their relationships. The chapter concludes with a brief discussion of Internet-related organizations and standards. Chapter 2 - Sockets in Berkeley Unix: We present the Berkeley UNIX socket architecture in relation to the Internet communication domain and illustrate connection-oriented and connectionless models of communication. The socket architecture forms the basis for the development of distributed applications. A socket represents an endpoint of communication for connectionless or connection-oriented protocols. A socket address data structure [...]