Service-Oriented Architecture (SOA) patterns

SOA patterns are a set of pattern specifications and pattern implementations that can be used to facilitate the development of SOA middleware applications.

Best practices:

• Building SOA applications with reusable assets: Reusable assets, recipes, and patterns
• Building SOA applications with reusable assets: SOA recipe reference example
• Building SOA applications with reusable assets: WS response template pattern
• Building SOA applications with reusable assets: The requester-side caching pattern

Pattern specifications:

• Cache mediation pattern specification: an overview
• Web services response template pattern: a specification
• The requester side caching pattern specification: an overview

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Information service patterns
Information service patterns that address challenges typically associated with information management -- such as providing an integrated and consistent view to heterogeneous data -- must also be addressed in a Service-Oriented Architecture. These patterns help architects make informed and consistent decisions. Selecting the most appropriate approach helps to significantly reduce development time and to meet highly demanding service-level agreements.

• Best practices: Information as a service, Part 1: Data federation pattern

Enterprise patterns
The enterprise patterns asset is a RAS asset that contains well-known patterns such as Session Facade, Business Delegate, Message Facade, and Data Access Object. You can apply these patterns to your UML models and generate code to automate the implementation of Java 2 Platform, Enterprise Edition (J2EE) applications.

• Best practices: Build J2EE applications with IBM Rational Software Architect Enterprise Patterns

• Demos: Enterprise Patterns Asset - Full Lifecycle

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WebSphere Platform Messaging patterns
The WebSphere Platform Messaging patterns asset is a RAS asset that extends the enterprise patterns asset to add support for the new messaging engine included in WebSphere® Application Server V6.0. It includes well-known mediation patterns, such as message logging, message transformation, as well as topology patterns to configure the service integration bus and message queues.

• Best practices: Build ESB connectivity with Rational Software Architect WebSphere Platform Messaging patterns

• Demos: WebSphere Platform Messaging Patterns Asset

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State-Oriented Portlet patterns
The State-Oriented Portlet patterns asset is a RAS asset that models portlet state transitions using UML state machines. It includes patterns that capture portlet view and portlet transition data. It supports popular portal features such as portlet modes and click-to-action. Using this asset, a complete portal application can be generated. Users can add their own business logic at architected locations. The best practices encoded by this pattern are harvested from IBM Software Services engagement experiences.

• Best practices: Build portlets using Rational Software Architect State-Oriented Portlet Patterns

• Demos: State-Oriented Portlet Patterns Asset

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TSA Failover Configuration patterns
The TSA Failover Configuration patterns asset is a RAS asset that helps you configure Tivoli® System Automation (TSA) to support high-availability enterprise solutions utilizing IBM HTTP Server, WebSphere Application Server, and DB2®. Using this pattern, you can generate TSA scripts that manage failover clusters. The best practices encoded by this pattern are harvested from the High Performance On Demand Solution Team experience in deploying high-availability solutions.

• Best practices: Deliver IBM Tivoli System Automation configurations quickly using the Failover Configuration Pattern

• Demos: TSA Failover Configuration Pattern Asset

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Security patterns
The security patterns asset is a RAS asset that extends the enterprise patterns asset. It enables you to incorporate security policies when you model your applications. The asset contains two EJB security configuration patterns and an application pattern. You can apply the security configuration patterns to update your EJB deployment descriptor with method level authorization and identity delegation policies. When you apply the application pattern to a class, it generates code which submits Common Base Events using the Common Event Infrastructure.

• Best practices: Use model-driven development to create and submit events

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WebSphere Cluster Creation pattern
The WebSphere Cluster Creation pattern asset is a RAS asset that fits into the SOA_deployment category. It enables you to represent WebSphere cluster elements (including cells, clusters, nodes, J2EE applications) when you model your deployment configuration. The asset contains a cluster pattern and a transform to generate cluster deployment scripts in either JACL or Jython, for use with WebSphere Application Server 5.x or 6.x. This pattern greatly reduces the time and complexity of generating deployment scripts for use in managing WebSphere deployments.

• Best practices: Define and deploy WebSphere clusters using Rational Software Architect WebSphere Cluster Creation pattern

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