Business Rule Engine (BRE) Blog by Sreedhar Pelluru, Senior Programmer Writer : Walkthroughs/Samples

Sample: Deploying Business Rules Programmatically

spelluru@microsoft.com — Sat, 17 Feb 2007 00:23:00 GMT

The Rule Engine Deployment Wizard, which ships with BizTalk Server 2006, provides a graphical user interface to perform the following operations:

· Import a policy from a Business Rule Language (BRL) file into the Rule Engine database, and publish the policy

· Export a policy from the Rule Engine database to a BRL file

· Deploy a published policy

· Undeploy a deployed policy

One of the disadvantages of this wizard is that you can perform only one operation at a time. For example, if you need to export two policies, you need to launch the wizard twice. This wizard is also not scriptable and hence cannot be used to easily automate the operations that it supports. For example, you cannot automate the wizard easily from a setup program to automatically import and deploy one or more policies. The DeployRules sample fills this gap, allowing administrators to import, export, deploy, undeploy, and remove policies in a scriptable manner.

Download the attachment, and review the ReadME.doc first.

Sample: Analyzing Objects of the Same Type in a Business Rule

spelluru@microsoft.com — Fri, 16 Feb 2007 23:57:00 GMT

In many scenarios, you will write a business rule against a type and expect the rule engine to separately analyze and act upon each instance of the type that is asserted into the engine. For example, if you write a rule against a .NET type and assert three .NET objects of that type into the rule engine working memory, the rule engine performs match-conflict resolution-action phases on each .NET object separately. In some scenarios, however, you will want to analyze multiple instances of a given type simultaneously in a rule. This sample demonstrates how to analyze multiple instances of a type in a business rule.

(Download the attachment, and then go through the readme.doc first)

BRE Walkthroughs

spelluru@microsoft.com — Thu, 09 Nov 2006 04:19:00 GMT

Hi all,

I added the following walkthroughs to BizTalk Server documentation recently. Please download the latest documentation from: http://www.microsoft.com/downloads/details.aspx?FamilyId=3294DDAF-9F67-409F-A92D-2F6070DC0D1A&displaylang=en

Walkthrough: Creating a Simple Policy
Walkthrough: Testing the Policy
Walkthrough: Invoking the Policy from an Orchestration
Walkthrough: Creating and Using a Vocabulary in the Policy
Walkthrough: Adding a Rule to the Policy
Walkthrough: Modifying the Policy
Walkthrough: Tracking Policy Execution
Walkthrough: Deploying the Policy
Walkthrough: Executing the Policy Programmatically
Walkthrough: Creating a Fact Creator
Walkthrough: Using Database and .NET facts (You will see this one in the next update, not in this one).

As always, any feedback is welcome and appreciated. After you open the BizTalk Server documentation CHM file, navigate to Microsoft BizTalk Server 2006 Help\Development\Developing BizTalk Server Applications\Creating and Using Business Rules\Business Rules Framework Walkthroughs.

Regards,
Sreedhar

Walkthrough: Testing a Simple Policy

spelluru@microsoft.com — Sat, 16 Sep 2006 01:12:00 GMT

Attached: Testing a Simple Policy.zip file contains

Word document for "Testing a Simple Policy" walkthrough
SamplePO.xml
SamplePO2.xml

Walkthrough: Creating a Simple Policy (level 200)

spelluru@microsoft.com — Sat, 16 Sep 2006 01:10:00 GMT

Attached: Creating a Simple Policy.zip file contains

Word document for "Creating a Simple Policy" walkthrough
PurchaseOrder.xsd schema

How to invoke a policy from another policy? (Policy Chaining)

spelluru@microsoft.com — Fri, 01 Sep 2006 01:26:00 GMT

Policy Chaining
This sample demonstrates how to invoke a policy from another policy by calling the Execute method of the Policy class exposed directly by the Microsoft.RuleEngine assembly.

How to Insert XML Nodes from a Business Rule? - XMLHelper class

spelluru@microsoft.com — Fri, 01 Sep 2006 01:23:00 GMT

Inserting XML Nodes from Business Rules
This sample demonstrates how to insert nodes into an XML document and set their values from a business rule by using the XmlHelper class.