static RuleSet CreateRuleset(string rulesetName)
{
// create a simple rule
// IF MySampleBusinessObject.MyValue != XMLdocument.ID
// THEN MySampleBusinessObject.MySampleMethod1(5)
//Creating the XML bindings on the SampleSchema XSD
//Document Binding that binds to the schema name and specifies the selector
XPathPair xp_root = new XPathPair("/*[local-name()='Root']", "Root");
XMLDocumentBinding xdb = new XMLDocumentBinding("SampleSchema", xp_root);
//DocumentField Bindings that bind to the fields in the schema that need to be used in rule defintion
XPathPair xp_ID = new XPathPair("/*[local-name()='Root']/*[local-name()='ID']", "ID");
XMLDocumentFieldBinding xfb1 = new XMLDocumentFieldBinding(Type.GetType("System.Int32"), xp_ID, xdb);
//Creating .NET class (property and member) bindings
// Class Bindings to bind to the class defintions whose properties and memebers will be used in rule defintion
ClassBinding cb = new ClassBinding(typeof(Microsoft.Samples.BizTalk.BusinessRulesHelloWorld2.HelloWorld2Library.HelloWorld2LibraryObject));
// Member Bindings to bind to the properties and members in the MySampleBusinessObject class that need to be used in rule definition
ClassMemberBinding myValue = new ClassMemberBinding("MyValue", cb);
ArgumentCollection argList = new ArgumentCollection();
argList.Add(new Constant(5));
ClassMemberBinding method1 = new ClassMemberBinding("MySampleMethod", cb, argList);
// create IF part
LogicalExpression condition = new NotEqual(new UserFunction(myValue), new UserFunction(xfb1));
// create then part
ActionCollection actions = new ActionCollection();
actions.Add(new UserFunction(method1));
// create the rule
Rule rule1 = new Rule("rule1", 0, condition, actions);
//create the verion information and ruleset description
DateTime time = new DateTime(System.DateTime.Now.Year, System.DateTime.Now.Month, System.DateTime.Now.Day);
VersionInfo vinf1 = new VersionInfo("Sample RuleSet to demonstrate the use of the Policy object", time, "BizRules", 1, 0);
// create the ruleset
RuleSet rs1 = new RuleSet(rulesetName, vinf1);
rs1.Rules.Add(rule1);
return(rs1);
}
public void CreatePolicy()
{
//Creating XML document bindings on the Case XSD schema
//Document Binding that binds to the schema name and specifies the selector
XPathPair xp_root = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']", "Root");
XMLDocumentBinding xmlCase = new XMLDocumentBinding("Microsoft.Samples.BizTalk.LoansProcessor.Case", xp_root);
//DocumentField Bindings that bind to the fields int the schema that are used in the defintion of "Income Rule" and the associated negation rule (the ELSE part)
XPathPair xp_basicSalary = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='Income']/*[local-name()='BasicSalary']", "Income/BasicSalary");
XMLDocumentFieldBinding xmlCase_basicSalary = new XMLDocumentFieldBinding((Type.GetType("System.Int32")), xp_basicSalary, xmlCase);
XPathPair xp_otherIncome = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='Income']/*[local-name()='OtherIncome']", "Income/OtherIncome");
XMLDocumentFieldBinding xmlCase_otherIncome = new XMLDocumentFieldBinding(Type.GetType("System.Int32"), xp_otherIncome, xmlCase);
Constant c1 = new Constant("Income status is valid");
XPathPair xp_incomeStatus = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='IncomeStatus']", "IncomeStatus");
XMLDocumentFieldBinding xmlCase_incomeStatus = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_incomeStatus, xmlCase, c1);
Constant c1_1 = new Constant("Income status is not valid");
XMLDocumentFieldBinding xmlCase_incomeStatusNegation = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_incomeStatus, xmlCase, c1_1);
// Wrapping the XML bindings as User Functions
UserFunction uf_basicSalary = new UserFunction(xmlCase_basicSalary);
UserFunction uf_otherIncome = new UserFunction(xmlCase_otherIncome);
UserFunction uf_incomeStatus = new UserFunction(xmlCase_incomeStatus);
UserFunction uf_incomeStatusNegation = new UserFunction(xmlCase_incomeStatusNegation);
// Condition 1: IF Basic Salary and Other Income > 0
Constant zero = new Constant(0);
GreaterThan ge1 = new GreaterThan(uf_basicSalary, zero);
GreaterThan ge2 = new GreaterThan(uf_otherIncome, zero);
LogicalExpressionCollection andList4 = new LogicalExpressionCollection();
andList4.Add(ge1);
andList4.Add(ge2);
LogicalAnd la4 = new LogicalAnd(andList4);
//Action 1 - THEN set Income Status in the incoming Case document to be Valid
ActionCollection actionList1 = new ActionCollection();
actionList1.Add(uf_incomeStatus);
/* Name: Income Rule
*
* Description:
* IF Basic Salary and Other Income > 0
* THEN set Income Status in the incoming Case document to be Valid
*
*/
Microsoft.RuleEngine.Rule r1 = new Microsoft.RuleEngine.Rule("Income Status Rule", la4, actionList1);
//Negation of Income Rule
LogicalNot ln1 = new LogicalNot(la4);
ActionCollection actionList1_1 = new ActionCollection();
actionList1_1.Add(uf_incomeStatusNegation);
Microsoft.RuleEngine.Rule r1_1 = new Microsoft.RuleEngine.Rule("Negation of Income Status Rule", ln1, actionList1_1);
//Creating DB bindings on the NorthWind DB -> CustInfo table
// DataRow Binding to bind to the Data Table, and provide the Data Set name (defaulting here to the DB name)
DataConnectionBinding drb_CustInfo = new DataConnectionBinding("CustInfo", "Northwind");
// Column bindings to bind to the columns in the Data Table that need to be used in the Commitments Status Rule
DatabaseColumnBinding col_ID = new DatabaseColumnBinding(Type.GetType("System.String"), "ID", drb_CustInfo);
DatabaseColumnBinding col_creditCardBalance = new DatabaseColumnBinding(Type.GetType("System.Int32"), "CreditCardBalance", drb_CustInfo);
// Creating the XML Document Field Bindings required in rule defintion
XPathPair xp_ID = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='ID']", "ID");
XMLDocumentFieldBinding xmlCase_ID = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_ID, xmlCase);
Constant c3 = new Constant("Compute Commitments");
XPathPair xp_commitmentsStatus = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='CommitmentsStatus']", "CommitmentsStatus");
XMLDocumentFieldBinding xmlCase_commitmentsStatus = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_commitmentsStatus, xmlCase, c3);
// Wrapping the DB and XML bindings as User Functions
UserFunction uf_xmlID = new UserFunction(xmlCase_ID);
UserFunction uf_commitmentsStatus = new UserFunction(xmlCase_commitmentsStatus);
UserFunction uf_dbID = new UserFunction(col_ID);
UserFunction uf_balance = new UserFunction(col_creditCardBalance);
//Condition 2 : IF the ID in the XML document is equal to the ID in the DB record, and the Credit Card Balance for that record is > 500
Equal eq2 = new Equal(uf_dbID, uf_xmlID);
Constant c2 = new Constant(500);
GreaterThan greaterThan = new GreaterThan(uf_balance, c2);
LogicalExpressionCollection andList2 = new LogicalExpressionCollection();
andList2.Add(eq2);
andList2.Add(greaterThan);
LogicalAnd la2 = new LogicalAnd(andList2);
//Action 2 Set the Commitments Status field to "Compute Commitments"
ActionCollection actionList2 = new ActionCollection();
actionList2.Add(uf_commitmentsStatus);
/* Rule 2 -
* Name: Commitments Rule
*
* IF the ID in the Document is = to the ID column in the DB
*
* AND
*
* IF Credit Card Balance > 500
*
* Set Commitments Status in the XML document to be equal to "Compute Commitments"
*/
Microsoft.RuleEngine.Rule r2 = new Microsoft.RuleEngine.Rule("Commitments Status Rule", la2, actionList2);
//Negation of Commitments Status Rule (the ELSE part)
LogicalNot ln2 = new LogicalNot(greaterThan);
LogicalExpressionCollection andList2negation = new LogicalExpressionCollection();
andList2negation.Add(eq2);
andList2negation.Add(ln2);
LogicalAnd la2negation = new LogicalAnd(andList2negation);
// Creating the XML Document Field Bindings required in rule defintion
Constant ignore_string = new Constant("Ignore Commitments");
XMLDocumentFieldBinding xmlCase_commitmentsStatusNegation = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_commitmentsStatus, xmlCase, ignore_string);
UserFunction uf_commitmentsStatusNegation = new UserFunction(xmlCase_commitmentsStatusNegation);
ActionCollection actionList2_1 = new ActionCollection();
actionList2_1.Add(uf_commitmentsStatusNegation);
Microsoft.RuleEngine.Rule r2_1 = new Microsoft.RuleEngine.Rule("Negation of Commitments Rule", la2negation, actionList2_1);
// Creating the XML Document Field Bindings required in the Employment Status rule
XPathPair xp_employmentTime = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='EmploymentType']/*[local-name()='TimeInMonths']", "EmploymentType/TimeInMonths");
XMLDocumentFieldBinding xmlCase_employmentTime = new XMLDocumentFieldBinding(Type.GetType("System.Int32"), xp_employmentTime, xmlCase);
UserFunction uf_employmentTime = new UserFunction(xmlCase_employmentTime);
Constant action3 = new Constant("Employment Status is valid");
XPathPair xp_employmentStatus = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='EmploymentStatus']", "EmploymentStatus");
XMLDocumentFieldBinding xmlCase_employmentStatus = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_employmentStatus, xmlCase, action3);
UserFunction uf_employmentStatus = new UserFunction(xmlCase_employmentStatus);
// Condition 3: IF Employment Time > 18 months
Constant lengthOfEmployment = new Constant(18);
GreaterThanEqual greaterThanEqual1 = new GreaterThanEqual(uf_employmentTime, lengthOfEmployment);
//Action 3 - THEN set Employment Status in the incoming Case document to be Valid
ActionCollection actionList3 = new ActionCollection();
actionList3.Add(uf_employmentStatus);
/* Name: Employment Status Rule
*
* Description:
* IF Time of Employment > 18 months
* THEN set Employment Status in the incoming Case document to be Valid
*
*/
Microsoft.RuleEngine.Rule r3 = new Microsoft.RuleEngine.Rule("Employment Status Rule", greaterThanEqual1, actionList3);
// Negation of EmploymentStatus Rule (the ELSE part)
LogicalNot ln3 = new LogicalNot(greaterThanEqual1);
Constant empStatus_invalid = new Constant("Employment Status is Invalid");
XMLDocumentFieldBinding xmlCase_employmentStatusInvalid = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_employmentStatus, xmlCase, empStatus_invalid);
UserFunction uf_employmentStatusInvalid = new UserFunction(xmlCase_employmentStatusInvalid);
ActionCollection actionList3_1 = new ActionCollection();
actionList3_1.Add(uf_employmentStatusInvalid);
Microsoft.RuleEngine.Rule r3_1 = new Microsoft.RuleEngine.Rule("Negation of Employment Status Rule", ln3, actionList3_1);
// Creating the XML Document Field Bindings required in the Residence Status rule
XPathPair xp_timeinResidence = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='PlaceOfResidence']/*[local-name()='TimeInMonths']", "PlaceOfResidence/TimeInMonths");
XMLDocumentFieldBinding xmlCase_timeinResidence = new XMLDocumentFieldBinding(Type.GetType("System.Int32"), xp_timeinResidence, xmlCase);
UserFunction uf_timeinResidence = new UserFunction(xmlCase_timeinResidence);
Constant lengthOfResidence = new Constant(3);
Constant residencyStatus_valid = new Constant("Residency Status is valid");
XPathPair xp_residencyStatus = new XPathPair("/*[local-name()='Root' and namespace-uri()='http://LoansProcessor.Case']/*[local-name()='ResidencyStatus']", "ResidencyStatus");
XMLDocumentFieldBinding xmlCase_residencyStatus = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_residencyStatus, xmlCase, residencyStatus_valid);
UserFunction uf_residencyStatus = new UserFunction(xmlCase_residencyStatus);
// Condition 4: IF Time of residence >= 3 years
GreaterThanEqual greaterThanEqual2 = new GreaterThanEqual(uf_timeinResidence, lengthOfResidence);
//Action 3 - THEN set Resdiency Status in the incoming Case document to be Valid
ActionCollection actionList4 = new ActionCollection();
actionList4.Add(uf_residencyStatus);
/* Name: Residency Status Rule
*
* Description:
* IF Time of Residency > 3 years
* THEN set Residency Status in the incoming Case document to be Valid
*
*/
Microsoft.RuleEngine.Rule r4 = new Microsoft.RuleEngine.Rule("Residency Status Rule", greaterThanEqual2, actionList4);
// Negation of Residency Status Rule
LogicalNot ln4 = new LogicalNot(greaterThanEqual2);
Constant residencyStatus_Invalid = new Constant("Residency Status is Invalid");
XMLDocumentFieldBinding xmlCase_residencyStatusInvalid = new XMLDocumentFieldBinding(Type.GetType("System.String"), xp_residencyStatus, xmlCase, residencyStatus_Invalid);
UserFunction uf_residencyStatusInvalid = new UserFunction(xmlCase_residencyStatusInvalid);
ActionCollection actionList4_1 = new ActionCollection();
actionList4_1.Add(uf_residencyStatusInvalid);
Microsoft.RuleEngine.Rule r4_1 = new Microsoft.RuleEngine.Rule("Negation of Residency Status Rule", ln4, actionList4_1);
// Creation of the rule-set (policy) and saving it into the file rulestore
// Creating configuration information (date, version, description, creator, policy name, and fact retriever used to retrieve the required datasets at runtime)
DateTime time = new DateTime(System.DateTime.Today.Year, System.DateTime.Today.Month, System.DateTime.Today.Day);
VersionInfo vinf1 = new VersionInfo("Rules to process Loan applications", time, "BizRules", 1, 0);
RuleSet rs1 = new RuleSet("LoanProcessing", vinf1);
RuleSetExecutionConfiguration rec1 = new RuleSetExecutionConfiguration();
Type factRetriever = typeof(myFactRetriever.DbFactRetriever);
RuleEngineComponentConfiguration recc1 = new RuleEngineComponentConfiguration(factRetriever.Assembly.FullName, factRetriever.FullName);
rec1.FactRetriever = recc1;
rs1.ExecutionConfiguration = rec1;
// Adding rules to the rule-set
rs1.Rules.Add(r1);
rs1.Rules.Add(r1_1);
rs1.Rules.Add(r2);
rs1.Rules.Add(r2_1);
rs1.Rules.Add(r3);
rs1.Rules.Add(r3_1);
rs1.Rules.Add(r4);
rs1.Rules.Add(r4_1);
// Saving the rule-set (policy) to an XML file in the current directory
FileRuleStore frs1 = new FileRuleStore("LoanProcessing.xml");
frs1.Add(rs1);
// Publish and deploy the ruleset to rulestore
DeployRuleSet(rs1);
}
