Contents

Preface
Purpose of This Document
How to Use This Document
Related Documentation
Contact Information

Client Application Development Concepts
Overview of Client Applications
OMG IDL
  OMG IDL to C++ Mapping
  OMG IDL to Java Mapping
  OMG IDL to COM Mapping
Static and Dynamic Invocation
Client Stubs
Interface Repository
Domains
Environmental Objects
  Bootstrap Object
  Factories and the FactoryFinder Object
  Naming Conventions and WLE Extensions to the FactoryFinder Object
  SecurityCurrent Object
  TransactionCurrent Object
  InterfaceRepository Object
Concepts for ActiveX Client Applications
  What is ActiveX?
  Views and Bindings
  Naming Conventions for ActiveX Views

Creating CORBA Client Applications
Summary of the Development Process for CORBA C++ Client Applications
Summary of the Development Process for CORBA Java Client Applications
Step 1: Obtaining the OMG IDL File
Step 2: Selecting the Invocation Type
Step 3: Compiling the OMG IDL File
Step 4: Writing the CORBA Client Application
  Initializing the ORB
  Establishing Communication with the WLE Domain
  Resolving Initial References to the FactoryFinder Object
  Using the FactoryFinder Object to Get a Factory
  Using a Factory to Get a CORBA Object
Step 5: Building the CORBA Client Application
Server Applications Acting as Client Applications
Using Java2 Applets

Creating ActiveX Client Applications
Summary of the Development Process for ActiveX Client Applications
The BEA Application Builder
Step 1: Loading the Automation Environmental Objects into the Interface Repository
Step 2: Loading the CORBA Interfaces into the Interface Repository
Step 3: Starting the Interface Repository Server Application
Step 4: Creating ActiveX Bindings for the CORBA Interfaces
Step 5: Loading the Type Library for the ActiveX Bindings
Step 6: Writing the ActiveX Client Application
  Including Declarations for the Automation Environmental Objects, Factories, and ActiveX Views of CORBA Objects
  Establishing Communication with the WLE Domain
  Obtaining References to the FactoryFinder Object
  Using a Factory to Get an ActiveX View
  Invoking Operations on the ActiveX View
Step 7: Deploying the ActiveX Client Application

Using Security
Overview of WLE Security
Summary of the Development Process for Security
Step 1: Using the Bootstrap Object to Obtain the SecurityCurrent Object
Step 2: Getting the PrincipalAuthenticator Object from the SecurityCurrent Object
Step 3: Obtaining the Authentication Level
Step 4: Logging on to the WLE Domain with Proper Authentication
Step 5: Logging off the WLE Domain

Using Transactions
Overview of WLE Transactions
Summary of the Development Process for Transactions
Step 1: Using the Bootstrap Object to Obtain the TransactionCurrent Object
Step 2: Using the TransactionCurrent Methods

Using the Dynamic Invocation Interface
When to Use DII
DII Concepts
  Request Objects
  Options for Sending Requests
  Options for Receiving the Results of Requests
Summary of the Development Process for DII
Step 1: Loading the CORBA Interfaces into the Interface Repository
Step 2: Obtaining the Object Reference for the CORBA Object
Step 3: Creating a Request Object
  Using the CORBA::Object::_request Member Function
  Using the CORBA::Object::create_request Member Function
Step 4: Sending a DII Request and Retrieving the Results
  Synchronous Requests
  Deferred Synchronous Requests
  Oneway Requests
  Multiple Requests
Step 5: Deleting the Request
Step 6: Using the Interface Repository with DII

Handling Exceptions
CORBA Exception Handling Concepts
CORBA System Exceptions
CORBA C++ Client Applications
  Handling System Exceptions
  User Exceptions
CORBA Java Client Applications
  System Exceptions
  User Exceptions
ActiveX Client Applications