Corba Section Index | Page 7
We are using Visibroker for Java 3.4 in our exisiting product. We use osagent and do static binding. We have an immediate need to deploy this application (Stand alone Java application communicating to application server thru CORBA) in Internet.
We are using Visibroker for Java 3.4 in our exisiting product. We use osagent and do static binding. We have an immediate need to deploy this application (Stand alone Java application communicating...more
I am trying to build up a Development environment (using JBuilder) to write Corba Object Implementations, Corba Object Requests and Corba Server Implementations, all in Java. I am using Visibroker 4.0. Please help.
JBuilder 3 Enterprise Edition comes with support for VisiBroker 3 built in. It understands IDL files, invokes the IDL compiler, will build sample implementations, includes the VBJ libraries, et...more
I am implementing a CORBA server object in CORBA client side. I wanted to start this CORBA server object from a client program but in a separate JVM. How can I do that?
CORBA's Basic Object Adaptor supports object activation on demand. The client just uses the object reference and if an object server implementing the object is not running, the BOA will automatic...more
OMG Event Service Specification Object Management Group, December 11, 1997. Asynchronous Notifications Among Distributed Objects. By Yeturu Aahlad, Mod Marathe, Bruce Martin and Chung Le. In Pr...more
An event channel is a shared resource used by the suppliers and consumers of the events. This leads to questions of management of the resource. For example, how is the channel created in the first...more
Often times a consumer is only interested in some of the events produced by a supplier. For example, consider a stock portfolio object. It is interested in stock change events for particular stock...more
Event channels are themselves suppliers and consumers of events. As such, they can be chained together. Consider the following scenario: a supplier supplies events to multiple nearby consumers an...more
An event channel is an object implemented by the CORBA Event Service. An event channel decouples the communication between suppliers of events and consumers of events. An event channel implements ...more
The data associated with an event are described by a IDL any type. An any is a self describing structure that can represent any CORBA data type. Thus, the data type is known at runtime but not at ...more
In pull-style event communication, the consumer of the event invokes a pull operation on the supplier. The pull operation returns the data associated with the event. The pull operation blocks unti...more
In push-style event communication, the supplier of the event invokes a push operation on the consumer. The push operation takes a single parameter which provides the data associated with the event.more
This is the bootstrapping problem, i.e. you must get the object reference of some context in order to use the naming service. CORBA defines a resolve_initial_references() method on the orb to solv...more
Can I name an object in more than one naming context? Can I give an object more than one name in a given context?
Sure. The only uniqueness requirement is that the names are unique in the scope of a given context.
The kind field allows type information to be encoded in the name component. This is similar to file system names in many operating systems where the extension indicates the type of file. (For exam...more
A name is a sequence of name components. The sequence represents the path from the naming context to a named object. That is, since a naming context can be named in another naming context, the nam...more