Embedding the Condition Editor

Namespaces: InRule.Repository, InRule.Repository.RuleElements, InRule.Authoring.BusinessLanguage, InRule.Authoring.Controls, InRule.Authoring.Editors, InRule.Authoring.Editors.Controls
Classes: RuleApplicationDef, ControlFactory
See Also: Opening a RuleApplicationDef for Authoring, WinForm Considerations
References: InRule.Repository.dll, InRule.Authoring.dll, InRule.Authoring.BusinessLanguage.dll, InRule.Authoring.Editors.dll, InRule.Common.dll

Loading the condition editor into a ContentControl

The following code works in WPF. Loading the control in this manner will only load the control, the Name and Enabled fields will not be present. To embed the entire control see here.

// Create an instance of the control factory (consider keeping this at form level to reuse where 
appropriate) 
ControlFactory controlFactory = new ControlFactory();

// Load ruleapplicationdef 
RuleApplicationDef ruleAppDef = RuleApplicationDef.Load(@"c:\\\work\\\mortgagecalculator.ruleapp");

// Get the entity 
EntityDef entityDef = ruleAppDef.Entities["Mortgage"];

// Get the decision table to edit 
SimpleRuleDef simpleRuleDef = (SimpleRuleDef)entityDef.GetRuleSet("CalcPaymentSchedule");.Rules["IfLoanIsValid"];

// Load condition editor into content control, defaulting to business language mode (false for last parameter will load in syntax mode) 
var control = controlFactory.CreateConditionEditor(simpleRuleDef, simpleRuleDef.Condition.FormulaText, 
 true);

Saving the changes

if (control != null) 
{ 
 // Call save values 
 control.SaveValues();

 // If user is in syntax mode, then we need to manually save the changes back to the rule 
 if (!control.UseLanguageExpression) { 
 // Get the rule from the editor 
 var contextDef = (SimpleRuleDef)control.ContextDef;

 // Update the definition object 
 contextDef.ConditionExpression = control.Expression; 
 } 
}