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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In particular, some of the common problems, such as authorization configuration problems and improper codebase settings, are covered. In Chapter 5, “Encouraging Distribution,” you start to explore programming in a distributed environment.

Starting from the Command Line.

Next, he introduces the fundamental concepts of development, including entries, leasing, events, transactions, and persistence.

Chapter 8, “Parallel Computing,” looks into some of the areas where exam;le can get into performance trouble and also some of the ways in which JavaSpaces can be an aid to performance.

Core Technologies, 2nd Edition. Piecing Together the Results. Doing this the first time can be a challenging experience. A Prime Number Counter Application. Distributed Events and JavaSpaces. In particular, it uses the concept of a linked list to explore some of the differences between distributed and nondistributed data structures. Fitscapes and Fallacies By Max K.


This will be used to illustrate the concepts of sharing data in a fair and reliable manner. On the “why” side, the chapter presents some high level descriptions of the uses of JavaSpaces that are fleshed out in later chapters.

In a distributed application, JavaSpaces provides a shared virtual space that providers and requesters of objects can use to communicate easily. In javaspaes, you also briefly encounter some of the ways JavaSpaces are being used and might be used. JavaSpaces Example by Example offers an example-rich introduction to JavaSpaces architecture and its Jini network technology-based interfaces.

JavaSpaces Example by Example | InformIT

A Parallel Computing Framework. JavaSpaces provides these capabilities with a very simple interface. Again, each of the topics is covered in javaspacee simple example format. There is currently no standard Jini security model. Chapter 6, “Preventing Deadlock,” discusses mechanisms for allowing processes to avoid deadlock.

Getting and Installing Jini. Description Copyright Dimensions: Book Sorry, this book is no longer in print.

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Examplee working knowledge of Java is needed, and an acquaintance with Jini concepts is very useful, but not required. Transactions and JavaSpace Methods. This allows for the simple exchange of tasks, requests, and information in the form of Java objects.

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.

Setting up policy files and using some simple protocols to aid in application level security are discussed. 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 exmaple needed to move into real world applications.

JavaSpaces Example by Example

Useful Places for Information. Later chapters make greater use of these. Getting a JavaSpace Running. In Chapter 1, “About JavaSpaces” you eexample what JavaSpaces are, how this book deals with them, and why anyone would want to use them.