How to Execute Policies
The following sample code shows how to invoke the rule engine to execute a policy programmatically by using the Policy class in the Microsoft.RuleEngine assembly.
xmlDocument = IncomingXMLMessage.XMLCase;
typedXmlDocument = new Microsoft.RuleEngine.TypedXmlDocument("Microsoft.Samples.BizTalk.LoansProcessor.Case",xmlDocument);
policy = new Microsoft.RuleEngine.Policy("LoanProcessing");
policy.Execute(typedXmlDocument);
OutgoingXMLMessage.XMLCase = xmlDocument;
policy.Dispose();
Important methods of the Policy class
Here are the important methods of the Policy class and their descriptions.
| Method in the Policy class | Description |
|---|---|
| Execute | Adds the specified short-term facts into the rule engine's working memory and executes the policy using Match-Conflict Resolution-Action algorithm. For more information on Match-Conflict Resolution-Action algorithm, see Condition Evaluation and Action Execution . |
| Dispose | Releases the resources used by the rule engine for executing the policy. |
| Clear | Clears or resets the working memory and the agenda of the rule engine instance created for executing the policy. |