public object UpdateFactsAfterExecution(RuleSetInfo rulesetInfo, Microsoft.RuleEngine.RuleEngine engine, object factsHandleIn)
{
if (factsHandleIn != null)
{
// retract the DataConnection object to clean up any rows fetched during policy execution
engine.Retract(factsHandleIn);
}
return(factsHandleIn);
}
public object UpdateFacts(RuleSetInfo rulesetInfo, Microsoft.RuleEngine.RuleEngine engine, object factsHandleIn)
{
object factsHandleOut;
if (factsHandleIn == null)
{
// create the database connection since it doesn't exist
SqlConnection con1 = new SqlConnection("Initial Catalog=Northwind;Data Source=(local);Integrated Security=SSPI;");
DataConnection dc1 = new DataConnection("Northwind", "PolicyValidity", con1);
factsHandleOut = dc1;
}
else
{
// reuse the database connection previously created
factsHandleOut = factsHandleIn;
}
engine.Assert(factsHandleOut);
return(factsHandleOut);
}
public object UpdateFacts(RuleSetInfo rulesetInfo, Microsoft.RuleEngine.RuleEngine engine, object factsHandleIn)
{
object factsHandleOut;
// The following logic asserts the required DB rows only once and always uses the the same values (cached) during the first retrieval in subsequent execution cycles
if (factsHandleIn == null)
{
SqlConnection con1 = new SqlConnection("Initial Catalog=Northwind;Data Source=(local);Integrated Security=SSPI;");
DataConnection dc1 = new DataConnection("Northwind", "CustInfo", con1);
engine.Assert(dc1);
factsHandleOut = dc1;
}
else
{
factsHandleOut = factsHandleIn;
}
return(factsHandleOut);
}
public object UpdateFacts(RuleSetInfo rulesetInfo, Microsoft.RuleEngine.RuleEngine engine, object factsHandleIn)
{
object factsHandleOut;
// The following logic asserts the required DB rows only once and always uses the the same values (cached) during the first retrieval in subsequent execution cycles
if (factsHandleIn == null)
{
string strCmd1 = "Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=jinli2000";
SqlConnection con1 = new SqlConnection(strCmd1);
// Using data connection binding
// DataConnection dc1 = new DataConnection("Northwind", "CustInfo", con1);
// Using data table binding
SqlDataAdapter dAdapt1 = new SqlDataAdapter();
dAdapt1.TableMappings.Add("Table", "CustInfo");
con1.Open();
SqlCommand myCommand = new SqlCommand("SELECT * FROM CustInfo", con1);
myCommand.CommandType = CommandType.Text;
dAdapt1.SelectCommand = myCommand;
DataSet ds = new DataSet("Northwind");
dAdapt1.Fill(ds);
TypedDataTable tdt1 = new TypedDataTable(ds.Tables["CustInfo"]);
engine.Assert(tdt1);
factsHandleOut = tdt1;
}
else
{
factsHandleOut = factsHandleIn;
}
return(factsHandleOut);
}
static void Main(string[] args)
{
// create a ruleset
Console.WriteLine("Creating a new ruleset ...");
RuleSet rs = CreateRuleset("SampleRuleset");
// save it to a file
Console.WriteLine("Saving ruleset to " + RuleStoreFilename + " ...");
SaveToFile(RuleStoreFilename, rs);
// load the same ruleset from the file
Console.WriteLine("Loading ruleset ...");
RuleSet newRS = LoadFromFile(RuleStoreFilename, "SampleRuleset");
// create an engine for the ruleset
Microsoft.RuleEngine.RuleEngine engine = new Microsoft.RuleEngine.RuleEngine((newRS), false);
//create an instance of the XML object
XmlDocument xd1 = new XmlDocument();
xd1.Load(@"..\..\SampleDocumentInstance.xml");
TypedXmlDocument doc1 = new TypedXmlDocument("SampleSchema", xd1);
// create the array of short-term facts
object[] shortTermFacts = new object[4];
shortTermFacts[0] = doc1;
shortTermFacts[1] = new Microsoft.Samples.BizTalk.BusinessRulesHelloWorld1.MySampleLibrary.MySampleBusinessObject(1);
shortTermFacts[2] = new Microsoft.Samples.BizTalk.BusinessRulesHelloWorld1.MySampleLibrary.MySampleBusinessObject(2);
shortTermFacts[3] = new Microsoft.Samples.BizTalk.BusinessRulesHelloWorld1.MySampleLibrary.MySampleBusinessObject(3);
try
{
// assert several objects
Console.WriteLine("Asserting objects ...");
engine.Assert(shortTermFacts);
// now execute to see what happens
Console.WriteLine("Executing ...");
engine.Execute();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
Console.WriteLine("Press any key to finish ...");
System.Console.Read();
// Clean up SampleRuleStore.xml
CleanUp();
// there should be 2 lines output:
// MySampleBusinessObject -- MySampleMethod executed for object 1 with parameter 5
// MySampleBusinessObject -- MySampleMethod executed for object 3 with parameter 5
//This is because:
/*
* The rule created programmatically within the CreateRuleset() method says:
*
* IF
*
* MySampleBusinessObject.MyValue is not equal to the value of the ID element in the XML document.
* THEN
*
* Execute MySampleBusinessObject.MySampleMethod(int) with a hardcoded integer constant 5 ".
*
* In our case we assert 3 .NET objects with "MyValue" = 1,2, and 3 along with an XML document with ID = 1, as fact instances.
*
* Hence the rule fires twice for the 2 .NET property values that are != 1
*
*/
}
private static void ExecuteRulesEngine(IBaseMessage pInMsg, string rulesPolicy)
{
Microsoft.BizTalk.RuleEngineExtensions.RuleSetDeploymentDriver rulesDriver = new Microsoft.BizTalk.RuleEngineExtensions.RuleSetDeploymentDriver();
SqlRuleStore sqlRuleStore = (SqlRuleStore)rulesDriver.GetRuleStore();
RuleSetInfoCollection rsic = sqlRuleStore.GetRuleSets(rulesPolicy, RuleStore.Filter.All);
RuleSet rs = sqlRuleStore.GetRuleSet(rsic[0]);
Microsoft.RuleEngine.RuleEngine engine = new Microsoft.RuleEngine.RuleEngine(rs);
engine.Assert(pInMsg);
engine.Execute();
}
