package org.acme.insurance.launcher;
import java.io.InputStream;
import org.acme.insurance.Driver;
import org.acme.insurance.Policy;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.DecisionTableConfiguration;
import org.kie.internal.builder.DecisionTableInputType;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import org.kie.api.io.ResourceType;
import org.kie.internal.runtime.StatefulKnowledgeSession;
/**
* This is a sample file to launch a rule package from a rule source file.
*/
public class PricingRuleLauncher {
public static final void main(String[] args) throws Exception {
PricingRuleLauncher launcher = new PricingRuleLauncher();
launcher.executeExample();
}
public int executeExample() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
DecisionTableConfiguration dtconf = KnowledgeBuilderFactory.newDecisionTableConfiguration();
dtconf.setInputType( DecisionTableInputType.XLS );
kbuilder.add( ResourceFactory.newClassPathResource( "/data/ExamplePolicyPricing.xls", getClass() ),
ResourceType.DTABLE,
dtconf );
if ( kbuilder.hasErrors() ) {
throw new RuntimeException( kbuilder.getErrors().toString() );
}
//BUILD RULEBASE
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
//NEW WORKING MEMORY
final StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession();
//now create some test data
Driver driver = new Driver();
Policy policy = new Policy();
session.insert( driver );
session.insert( policy );
session.fireAllRules();
System.out.println( "BASE PRICE IS: " + policy.getBasePrice() );
System.out.println( "DISCOUNT IS: " + policy.getDiscountPercent() );
return policy.getBasePrice();
}
private InputStream getSpreadsheetStream() {
return this.getClass().getResourceAsStream( "/data/ExamplePolicyPricing.xls" );
}
}