Lease write(Entry entry, Transaction txn, long lease) throws TransactionException, RemoteException; long NO_WAIT = 0;. JavaSpaces Example by Example. 4. This interface is implemented by servers that export a * JavaSpaces technology service. The operations in this interface * are the public methods that all such. JavaSpaces is a powerful Jini service that provides a high-level tool for creating . For example, a distribute algorithm might require processes to work in lock.
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Piecing Together the Results. In it, you also briefly encounter some of the ways JavaSpaces are being used and might be used. In Part 3, “Going to the Next Level,” you look at how you can use the mechanisms you learned in Parts 1 and 2 and use these mechanisms to help meet demands that are needed to move into real world applications.
Some common techniques for doing this, such as how to decide what computations could benefit from being distributed and how to distribute data, are discussed in this chapter. Halter provides in-depth coverage of scalability and availability, concluding with detailed guidance on using security features based on Java 2 technology to protect distributed JavaSpaces applications. This chapter takes you through the exmple of installing Jini and JavaSpaces and running a simple application.
He walks you through obtaining, installing, and configuring JavaSpaces architecture, addressing common problems such as authorization configuration and improper eexample settings. In Chapter 1, “About JavaSpaces” you explore what JavaSpaces are, how this book deals with them, and why anyone would want to use them.
Book Sorry, this book is no longer in print. There is currently no standard Jini security model.
JavaSpaces Example by Example
Unlimited one-month access with your purchase. A Parallel Computing Framework. Add To My Wish List. It covers a simple method of locating a single JavaSpace. This chapter covers locking and sharing issues and presents mechanisms, such as semaphores, for dealing with resource synchronization. The intended audience is for intermediate to advanced programmers exmaple to learn about JavaSpaces.
JavaSpaces technology simplifies distributed computing, by providing a shared virtual space exampple tasks, requests, and information can easily be exchanged in the form of objects based on Javatm technology. Register your product to gain access to bonus material or receive a coupon. This allows for the simple exchange of tasks, requests, and information in the form of Java objects. Get unlimited day access to over 30, books about UX design, leadership, project management, teams, javaslaces development, analytics, core programming, and so much more.
Starting from the Command Line. Distributed Events and JavaSpaces. Although an experienced Jini developer may skip this chapter, for beginners, this should be extremely exampls. Obtaining and Installing JavaSpaces. To compile the classes for the synchronization example in Windows, use the following. Running the Ray-Tracing Example.
In Part 2, “Distributed Programming,” you look at how you can apply the basics that you learned in Part 1 into writing distributed applications. This will be used to illustrate the concepts of sharing data in a fair and reliable manner. Getting and Installing Jini. On the “why” side, the chapter presents some high level descriptions of the uses of JavaSpaces that are fleshed out in later chapters. This chapter is intended to establish familiarity and building blocks for these topics.
JavaSpaces Example by Example | InformIT
Later chapters make greater use of these. Examples include using JavaSpaces as a mechanism for decoupled communication, application structuring, and parallel computing.
Halter Published Nov 9, by Prentice Hall. Transactions and JavaSpace Methods. Using Transactions with JavaSpaces. Useful Places for Information.
Table of Contents Preface. What Is a JavaSpace? JavaSpaces provides these capabilities with a very simple interface.
Parallel Computing in General. There are a number of ways to improve or degrade the performance of a distributed application. In Chapter 5, “Encouraging Distribution,” you start to explore programming in a distributed environment.
The hands-on, example-rich guide to JavaSpaces technology Building robust, scalable, high-performance distributed applications Up-to-the-minute coverage based on Jini 1.