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Using the Notification Service

This document describes using the Notification Service in the BEA WebLogic Enterprise (sometimes referred to as WLE) product. This document defines concepts associated with using the Notification Service and describes the development process for Java and C++ applications. In addition, instructions for building and running the Notification sample applications and descriptions of the Notification Service application programming interface (API) and administrative tasks and tools are included in this document.

Overview

Introduction

Functional Overview

Product Components

Notification Service API Reference

Introduction

   Quality of Service

   Obtaining the Channel Factory

   Using Transactions

   Structured Event Fields, Types and Filters

   Designing Events

   Creating FML Field Table Files for Events

   Interoperability with BEA TUXEDO Applications

   Parameters Used When Creating Subscriptions

BEA Simple Events API

   TOBJ_SimpleEvents::Channel Interface

   channel::subscribe

   Channel::unsubscribe

   Channel::push_structured_event

   Channel::exists

   TOBJ_SimpleEvents::ChannelFactory Interface

   Channel_Factory::find_channel

CosNotification Service API

   Overview of Supported CosNotification Service Classes

   Detailed Descriptions of CosNotification Service Classes

   CosNotifyFilter::Filter::add_constraints

   CosNotifyFilter::Filter::destroy

   CosNotifyFilter::FilterFactory::create_filter

   CosNotifyChannelAdmin::StructuredProxyPushSupplier:: connect_structured_push_consumer

   CosNotifyChannelAdmin::StructuredProxyPushSupplier::set_qos

   CosNotifyChannelAdmin::StructuredProxyPushSupplier::add_filter

   CosNotifyChannelAdmin::StructuredProxyPushSupplier::get_filter

   CosNotifyChannelAdmin::StructuredProxyPushSupplier::
disconnect_structured_push_supplier

   CosNotifyChannelAdmin::StructuredProxyPushSupplier::MyType

   CosNotifyChannelAdmin::StructuredProxyPushConsumer::
connect_structured_push_supplier

   CosNotifyChannelAdmin::StructuredProxyPushConsumer::
push_structured_event

   CosNotifyChannelAdmin::StructuredProxyPushConsumer::
disconnect_structured_push_consumber

   CosNotifyChannelAdmin::StructuredProxyPushconsumer::MyType

   CosNotifyChannelAdmin::ConsumerAdmin::
obtain_notification_push_supplier

   CosNotifyChannelAdmin::ConsumerAdmin::get_proxy_supplier

   CosNotifyChannelAdmin::SupplierAdmin::
obtain_notification_push_consumer

   CosNotifyChannelAdmin::EventChannel::
ConsumerAdmin default_consumer_admin

   CosNotifyChannelAdmin::EventChannel::
ConsumerAdmin default_supplier_admin

   CosNotifyChannelAdmin::EventChannel::default_filter_factory

   CosNotifyChannelAdmin::EventChannelFactory::get_event_channel

   CosNotifyComm::StructuredPushConsumer::push_structured_event

   CosNotifyComm::StructuredPushConsumer::
disconnect_structured_push_consumer

   CosNotifyComm::StructuredPushConsumer::Offer_change

   Exception Minor Codes

Using the BEA Simple Events API

Development Process

Designing Events

Step 1: Writing an Application to Post Events

   Getting the Event Channel

   Creating and Posting Events

Step 2: Writing an Application to Subscribe to Events

   Implementing the CosNotifyComm::StructuredPushConsumer Interface

   Getting the Event Channel

   Creating a Callback Object

   Creating a Subscription

Step 3: Compiling and Running Notification Service Applications

   Generating the Client Stub and Skeleton Files

   Building and Running Applications

Using the CosNotification Service API

Development Process

Designing Events

Step 1: Writing an Application to Post Events

   Getting the Event Channel

   Creating and Posting Events

Step 2: Writing an Application to Subscribe to Events

   Implementing the CosNotifyComm::StructuredPushConsumer Interface

   Getting the Event Channel, ConsumerAdmin Object, and Filter Factory Object

   Creating a Callback Object

   Creating a Subscription

Step 3: Compiling and Running Notification Service Applications

   Generating the Client Stub and Skeleton Files

   Compiling and Linking the Application Code

Building the Introductory Sample Application

Overview

Building and Running the Introductory Sample Application

   Verifying the Settings of the Environment Variables

   Copying the Files for the Introductory Sample Application into a Work Directory

   Changing the Protection Attribute on the Files for the Introductory Sample Application

   Setting Up the Environment

   Building the Introductory Sample Application

   Starting the Introductory Sample Application

   Using the Introductory Sample Application

   Shutting Down the System and Cleaning Up the Directory

Building the Advanced Sample Application

Overview

Building and Running the Advanced Sample Application

   Verifying the Settings of the Environment Variables

   Copying the Files for the Advanced Sample Application into a Work Directory

   Changing the Protection Attribute on the Files for the Advanced Sample Application

   Setting Up the Environment

   Building the Advanced Sample Application

   Starting the Advanced Sample Application

   Using the Advanced Sample Application

   Shutting Down the System and Cleaning Up the Directory

Notification Service Administration Guide

Introduction

Configuring the Notification Service

Configuring Data Filters

Setting the Host and Port

Creating a Transaction Log

Creating Event Queues

   Determining Space Parameters for Transient and Persistent Subscriptions

   Creating a device on disk for the queue space

   Configuring a Queue Space

   Creating the Queues

   Setting IPC Parameters on Microsoft Windows NT

Creating the UBBCONFIG File and the TUXCONFIG File

   Configuring Domain Gateways

Managing the Notification Service

   Synchronizing Databases

   Purging the System of Dead Subscriptions

   Monitoring Queue Utilization

   Purging the Queues of Unwanted Events

   Managing the Error Queue

Notification Service Administration Utility and Commands

   ntsadmin Utility

   ntsadmin

   ntsadmin Commands

   Using the ntsadmin Utility

Notification Servers

   TMNTS

   TMNTSFWD_T

   TMNTSFWD_P