VisiBroker for Java Examples

Directory Contents

• The Bank Example


This subdirectory contains the "Bank" example application developed in several chapters of the VisiBroker for Java Programmer's Guide. This example has two simple interfaces supporting two operations - open, to open a bank account and balance, to query the balance in the user's account. The other examples based on the Bank example are bank_using_tie,dynamic_bank, event_bank, and URLNaming_bank.

• Bank_Using_TIE


This subdirectory contains the bank example and illustrates the implementation of the Bank Server using the TIE mechanism.

• Dynamic Bank Example(DII/DSI)


This subdirectory contains the bank example, where the client is implemented using DII (Dynamic Invocation Interface) and the Server is implemented using DSI (Dynamic Skeleton Interface). 

• Event Handler example


This subdirectory contains the bank example showing how to use the Event Handler API provided by VisiBroker for Java and create communication event handlers for client applications and object implementations.

• The Interceptor examples


This subdirectory has two examples: sampleInterceptor and timerInterceptor. The interceptor examples are based on the Bank Example described above. They illustrate how to create an interceptor and associate it with the ORB. They also show how to add simple tracing or timing information to an existing client or server without modifying source code.

• The IR examples


This subdirectory contains two examples, one of which looks up the interface associated with a given IDLname in the Interface Repository. The second one traverses the IR as a container and prints all the contents in an IDL-like fashion. These examples show how to bind to, query and traverse the IR.

• locate


This subdirectory contains examples using the Location Service provided by VisiBroker for Java.  The example demonstrates   how to bind to and query the OSAgent to obtain information about all accessible Globally scoped objects. It also shows how to implement triggers which will be notified as Globally scoped instances become available.

• odb


This subdirectory contains an example that uses a factory to create an arbitrary number of objects  provided through a Service Activator.  The objects may be activated and deactivated dynamically, simulating what is required when integrating VisiBroker servers with an Object Database.

• The Pass_by_value examples


The pass_by_value subdirectory contains two examples, the Dictionary and the List. These examples illustrate the use of the Caffeine compiler (java2iiop) to generate client stubs and server skeletons from interface definitions written in Java instead of IDL. They also illustrate how to work with complex data types - in particular, passing by value using extensible structs.

• The Smart Stub Example


The smart_stub subdirectory contains an example that shows how to cache information from server objects and reduce the number of actual server requests a client has to make.

• The URLNaming Example


The URL Naming example illustrates how a client can obtain a reference to an object by specifying the URL associated with an object's IOR instead of using the object name.