JavaSpaces

JavaSpaces

An application that provides a unified environment for sharing, communicating and coordinating within a Jini network. It functions like a virtual bulletin board, enabling information to be posted and responded to by the appropriate (object-based) application. For example, sellers could post items for sale, and buyers could respond. See Jini.
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Then the proxy bean will try to read a semaphore object from the synchronization space in JavaSpaces [43].
In addition, it includes a combination of an object-based data model and In Memory Database (IMDB) capabilities through a hybrid implementation of SQL-based queries and the JavaSpaces and JCache APIs.
This is made possible through the use of applications compiled to portable Java bytecode along with the Jini and JavaSpaces technologies (73) that have been enabled by the Java environment.
This book introduces the JavaSpaces architecture, provides a definitive and comprehensive description of the model, and demonstrates how to use it to develop distributed computing applications.
That's partly because some of the "enterprise" features of Jini aren't yet ready, including key security features and the widely heralded JavaSpaces technology, still three to six months out.
Having asked a directory for a service, JINI then points at javaspaces, which is like a large distributed bulletin board which stores objects delivering services and finally, using Java protocols, it enables objects to pass data, code and communications between each other.
JavaSpaces, which is a shared memory paradigm, provides high-level coordination mechanism for Java easing the burden of creating distributed applications.
What has been agreed is that a committee led by Mitre Corp's Douglas Jensen will meet in Hawaii on February 23, 24 and 25 to discuss a new proposal for R1, this time focused on distributed real-time Java, which includes technologies such Sun's Jini and JavaSpaces, but not limited to them.
Novell Inc - an investor in ObjectSpace - is expected to talk about the work it is doing with ObjectSpace on technology similar to Jini and JavaSpaces that it intends to incorporate into future versions of its NDS Novell Directory Services (CI No 3,524).
Programming Infrastructure Model Services Java Java virtual machine Beans Enterprise Java Beans Java Remore Swing graphics Java naming and Method Invocation toolkit directory services Java transaction service Jini Discovery Lookup Leasing JavaSpaces service Transactions Transaction manager Distributed events Lets objects find Adds simple APIs Everything else and communicate for remote is a service with one another objects and basic distributed computing The Jini programming model consists of three sets of interfaces meant to extend the usual single virtual machine programming model at the core Java programming libraries to allow the connection of distributed objects in robust ways.
The ObjectSpace Inc investment is all to do with "spaces" technology similar to Sun Microsystems Inc's Jini and JavaSpaces work.
These books cover some of the latest developments on Java, including the Jini technology and JavaSpace architecture.