Creating a Stateful Rule Session and Executing a Ruleset
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To invoke a ruleset using a stateful rule session you can:
| Note |
| The ruleset should be previously deployed.
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In the following example we assume that a ruleset execution interceptor has been set on the RuleApp that redirects the RuleApp call to a ruleset of this RuleApp.
To create a stateful rule session and execute a ruleset with a RuleApp path:
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Use code such as the following:
// Creates the execution request
IlrSessionRequest request = new IlrSessionRequest(RULESET_PATH, resetRuleflow);
// where resetRuleflow is a boolean to reset or not the ruleflow
IlrSessionDescriptor desc = request.getSessionDescriptor(); desc.setUserData("testInterceptorRuleApp");
// Enable the interceptor
desc.setEnableInterceptor(true);
// Creates the stateful rule session
IlrStatefulRuleSession rsf = rsProvider.createStatefulRuleSession(request);
// Sets the IN and INOUT parameters
IlrSessionExecutionSettings execSettings = request.getExecutionSettings();
SerializableObject so = new SerializableObject();
so.value = new String("Value1");
IlrSessionParameters params = execSettings.getInputParameters();
params.setParameter("paramJava", so);
params.setParameter("paramXml", getXmlString());
// Executes the ruleset with interceptor enabled
IlrSessionStatefulExecutionSettings execSettings =
(IlrSessionStatefulExecutionSettings)request.getExecutionSettings();
IlrSessionExecutionResult result = rsf.executeRules(execSettings);
IlrSessionExecutionProperties execProperties = rsf.getExecutionProperties();
IlrSessionParameters outputParameters = result.getOutputParameters();
System.out.println(outputParameters);
System.out.println(" ruleset executed is " +
execProperties.getCanonicalRulesetPath());
| Warning |
| The rule session should be freed rigorously at the end of the session to prevent the application server from overloading.
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