package org.drools.integrationtests;
import java.util.ArrayList;
import java.util.List;
import junit.framework.TestCase;
import org.drools.KnowledgeBase;
import org.drools.KnowledgeBaseFactory;
import org.drools.Message;
import org.drools.base.mvel.MVELDebugHandler;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderError;
import org.drools.builder.KnowledgeBuilderErrors;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.io.ResourceFactory;
import org.drools.logger.KnowledgeRuntimeLogger;
import org.drools.logger.KnowledgeRuntimeLoggerFactory;
import org.drools.runtime.StatefulKnowledgeSession;
import org.mvel2.MVELRuntime;
import org.mvel2.debug.Debugger;
import org.mvel2.debug.Frame;
/**
* This is a sample class to launch a rule.
*/
public class HelloWorldTest extends TestCase {
public void testHelloWorld() throws Exception {
// load up the knowledge base
KnowledgeBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
// go !
Message message = new Message();
message.setMessage("Hello World");
message.setStatus(Message.HELLO);
ksession.insert(message);
ksession.fireAllRules();
logger.close();
}
public void testHelloWorldDebug() throws Exception {
final List<String> knownVariables = new ArrayList<String>();
MVELRuntime.resetDebugger();
MVELDebugHandler.setDebugMode(true);
MVELRuntime.setThreadDebugger(new Debugger() {
public int onBreak(Frame frame) {
System.out.println("onBreak");
for (String var: frame.getFactory().getKnownVariables()) {
System.out.println(" " + var);
knownVariables.add(var);
}
return 0;
}
});
String source = "org.drools.integrationtests.Rule_Hello_World_0";
MVELRuntime.registerBreakpoint(source, 1);
// load up the knowledge base
KnowledgeBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
// go !
Message message = new Message();
message.setMessage("Hello World");
message.setStatus(Message.HELLO);
ksession.insert(message);
ksession.fireAllRules();
logger.close();
assertEquals( 2, knownVariables.size() );
assertTrue(knownVariables.contains("m"));
assertTrue(knownVariables.contains("myMessage"));
}
private KnowledgeBase readKnowledgeBase() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(
ResourceFactory.newClassPathResource("Sample.drl", HelloWorldTest.class),
ResourceType.DRL);
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
for (KnowledgeBuilderError error: errors) {
System.err.println(error);
}
throw new IllegalArgumentException("Could not parse knowledge.");
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return kbase;
}
}