Using the WebSphere message Broker API to write messaging flow patterns

A pattern is a reusable solution to a http://www.aliyun.com/zixun/aggregation/17253.html > FAQ in a given context. Creating schemas for complex reusable message flows is imperative so that customers can reuse the message flow in different scenarios by simply changing some configuration values. A pattern provides a reusable solution that encapsulates a tested method to complete a common schema, design, or deployment task in a particular context. When deciding to use patterns, many design and development efforts are actually done, which can reduce your development, testing, and operational work, saving time and money.

Ibm®websphere®message Broker V8 extends the message Broker Java™api and supports the modification of user-defined pattern instances or the development of new messaging applications using Java code. Previously, you had to develop a messaging application using message Broker Toolkit, but the new Java API allows you to develop message flows using the Java IDE without using the Toolkit.

WebSphere message Broker API

The message Broker API is a programming interface that allows applications to control agents and their resources through a remote interface. The message Broker API is also known as the revisit Manager Proxy (CMP) API. Revisit Manager has been removed from the V7, and the full name of the API has changed, but the terminology CMP application and CMP APIs remain in the information center, which refers to the message Broker API, This is done to achieve continuity and consistency with the JAR file Configmanagerproxy.jar, which provides the required classes. Figure 1 below shows the packages provided in Configmanagerproxy.jar, and the packages in the red circle provide the message Broker API class.

Figure 1. Java Packages in Configmanagerproxy.jar

The Message Broker API contains only the Java implementation content and is referred to as the information broker Java API. Through a set of Java classes that make up CMP, user applications have complete access to various agent functions and resources. Use the CMP API to interact with the agent to perform the following tasks:

For applications that interact with message broker, the Java class is logically located between the user application and message broker, in the JVM of the user application. To achieve connectivity, the API needs to use WebSphere MQ Classes for Java. As shown in Figure 2, the message Flow mode program is a powerful user application that initializes an instance of a message flow based on the schema definition:

Figure 2. Message Broker API

Scene

As shown in the figure below, Jkretail is a large American retailer with many malls (red pins) in the United States and a central office located in Nebraska State (green pins):

Figure 3. Jkretail's Mall and center office.