Interface Repository(IR) example

The ir example illustrates the mechanism used to query the Interface Repository (IR), to traverse the IR and to print its contents.

• Bind to the IR and query the IR for its contents
• Traverse the IR as a container and print its contents
• Understand TypeCodes and create them

Directory Contents

• PrintIDL.java


This program binds to the IRObject, looks up a given interface name in the IR and prints the names of methods and attributes of the interface associated with the interface. Particularly, it illustrates the use of the lookup() and describe_interface() methods.

• PrintIR.java


This program binds to the IR object, queries the IR for its contents (treating the IR as a container), traverses the container recursively to print its contents.

• ir.idl


IDL file used as an example to load into the IR.

Running this example

To run the examples, first make sure that the VisiBroker Smart Agent (osagent executable) is running on your network. Then start the Interface Repository server process (irep). A graphical interface will popup from which you can load the file ir.idl into the IR. Alternatively you can start the Interface Repository server process (irep) in the console mode using the command:

prompt> irep -console my_irep_server

(start irep -console my_irep_server on Windows)

Next, load  ir.idl  into the ir.

irep_prompt> rir.idl   // Note: There is no space between the "r" and

                            // the ir.idl filename

Do not quit from the shell started by the irep process.

Next, run the PrintIDL program.

prompt> vbj PrintIDL CORBA::IRObject (or another interface)

The PrintIDL program binds to the IR, looks up the interface requested by the user and prints the names of methods and attributes of the interface stored in the IR associated with it.

Next, run the PrintIR program.

prompt> vbj PrintIR

The PrintIR program binds to the IR, queries the interface repository for all of its contents, traverses the IR recursively and prints the contents in an IDL like output.  You can match the output against the information in the IDL file  ir.idl