Book Image

Microsoft Windows Server AppFabric Cookbook

Book Image

Microsoft Windows Server AppFabric Cookbook

Overview of this book

Windows Server AppFabric provides a set of integrated capabilities that extend IIS and the Windows Server platform making it easier to build, scale and manage composite applications today. Windows Server AppFabric delivers the first wave of innovation within an exciting new middleware paradigm which brings performance, scalability and enhanced management capabilities to the platform for applications built on the .NET Framework using Windows Communication Foundation and Windows Workflow Foundation.'Microsoft Windows Server AppFabric Cookbook' shows you how to get the most from WCF and WF services using Windows Server AppFabric leveraging the capabilities for building composite solutions on the .NET platform. Packed with over 60 task-based and immediately reusable recipes, 'Microsoft Windows Server AppFabric Cookbook' starts by showing you how to set up your development environment to start using Windows Server AppFabric quickly. The book then moves on to provide comprehensive coverage of the most important capabilities provided by Windows Server AppFabric, diving right in to hands-on topics such as deploying WCF and WF applications to Windows Server AppFabric and leveraging the distributed caching, scalable hosting, persistence, monitoring and management capabilities that Windows Server AppFabric has to offer, with recipes covering a full spectrum of complexity from simple to intermediate and advanced.
Table of Contents (16 chapters)
Microsoft Windows Server AppFabric Cookbook
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface

Programmatically querying persisted workflow instances


In the previous recipe, we saw how the persisted instances can be queried via Windows Server AppFabric Dashboard. Although AppFabric Dashboard offers a simple and easy user experience, it is not the only way to query persisted workflow instances. In this recipe, we will learn about the Windows Server AppFabric's Instance Query Provider API, which can also be used to query persisted workflows.

Note

In fact, AppFabric Dashboard internally invokes Windows Server AppFabric cmdlets. And cmdlets internally instantiate and invoke the Windows Server AppFabric's API. Eventually, API is at the heart of the implementation and offers consistent feature set across AppFabric cmdlets and AppFabric Dashboard.

We will use the same Workflow Sample solution that we used in the previous recipe. The sample workflow that we are using is part of Windows Server AppFabric Samples and is available in the yourSamplesDirectory\Hosting\InstanceQueryAndControl folder...