/// <summary>
/// Invokes a Business Rules policy specified in the supplied <see cref="PolicyExecutionInfo"/> object using the list of zero or more facts.
/// </summary>
/// <param name="policyExecInfo">The <see cref="PolicyExecutionInfo"/> object containing policy name, version number and parameters to be used when invoking the policy.</param>
/// <param name="facts">The list of facts to be used when invoking the policy.</param>
/// <returns>The <see cref="PolicyExecutionResult"/> object containing the results of policy execution.</returns>
public static PolicyExecutionResult Execute(PolicyExecutionInfo policyExecInfo, params object[] facts)
{
Guard.ArgumentNotNull(policyExecInfo, "policyExecInfo");
Guard.ArgumentNotNullOrEmptyString(policyExecInfo.PolicyName, "policyExecInfo.PolicyName");
var callToken = TraceManager.RulesComponent.TraceIn(policyExecInfo.PolicyName, policyExecInfo.PolicyVersion);
Version policyVersion = policyExecInfo.PolicyVersion;
PolicyExecutionResult execResult = new PolicyExecutionResult(policyExecInfo.PolicyName, false);
PolicyFetchErrorHandler errorHandler = delegate(Exception ex)
{
TraceManager.RulesComponent.TraceError(ex);
execResult.Errors.Add(ex);
};
try
{
using (Policy policy = policyVersion != null ? new Policy(policyExecInfo.PolicyName, policyVersion.Major, policyVersion.Minor, errorHandler) : new Policy(policyExecInfo.PolicyName, errorHandler))
{
List <object> agendaFacts = new List <object>(facts);
agendaFacts.Add(policyExecInfo);
using (TracingRuleTrackingInterceptor trackingInterceptor = new TracingRuleTrackingInterceptor())
{
// Write the Start event to measure how long it takes to execute the BRE policy.
var scopeStarted = TraceManager.RulesComponent.TraceStartScope(String.Format("{0} (\"{1}\", {2}.{3})", InstrumentedScopes.ExecutePolicy, policy.PolicyName, policy.MajorRevision, policy.MinorRevision));
policy.Execute(agendaFacts.ToArray(), trackingInterceptor);
// Once finished, write the End event along with calculated duration.
TraceManager.RulesComponent.TraceEndScope(String.Format("{0} (\"{1}\", {2}.{3})", InstrumentedScopes.ExecutePolicy, policy.PolicyName, policy.MajorRevision, policy.MinorRevision), scopeStarted);
}
execResult = new PolicyExecutionResult(policyExecInfo.PolicyName, policy.MajorRevision, policy.MinorRevision);
}
}
catch (Exception ex)
{
TraceManager.RulesComponent.TraceError(ex);
execResult.Errors.Add(ex);
}
TraceManager.RulesComponent.TraceOut(callToken, execResult.PolicyName, execResult.PolicyVersion, execResult.Success);
return(execResult);
}
/// <summary>
/// Invokes a Business Rules policy specified in the supplied <see cref="PolicyExecutionInfo"/> object using the collection of specified facts.
/// </summary>
/// <param name="policyExecInfo">The <see cref="PolicyExecutionInfo"/> object containing policy name, version number and parameters to be used when invoking the policy.</param>
/// <param name="facts">The collection of facts to be used when invoking the policy.</param>
/// <returns>The <see cref="PolicyExecutionResult"/> object containing the results of policy execution.</returns>
public static PolicyExecutionResult Execute(PolicyExecutionInfo policyExecInfo, IEnumerable facts)
{
Guard.ArgumentNotNull(facts, "facts");
return(Execute(policyExecInfo, facts.Cast <object>().ToArray <object>()));
}
