public KieSession newKieSession(
String kSessionName, Environment environment, KieSessionConfiguration conf) {
KieSessionModelImpl kSessionModel = (KieSessionModelImpl) getKieSessionModel(kSessionName);
if (kSessionModel == null) {
log.error("Unknown KieSession name: " + kSessionName);
return null;
}
if (kSessionModel.getType() == KieSessionModel.KieSessionType.STATELESS) {
throw new RuntimeException(
"Trying to create a stateful KieSession from a stateless KieSessionModel: "
+ kSessionName);
}
KieBase kBase = getKieBase(kSessionModel.getKieBaseModel().getName());
if (kBase == null) {
log.error("Unknown KieBase name: " + kSessionModel.getKieBaseModel().getName());
return null;
}
KieSession kSession =
kBase.newKieSession(
conf != null ? conf : getKnowledgeSessionConfiguration(kSessionModel), environment);
wireListnersAndWIHs(kSessionModel, kSession);
registerLoggers(kSessionModel, kSession);
kSessions.put(kSessionName, kSession);
return kSession;
}
/**
* This method creates a stateful knowledge session per Drools event processor.
*
* @return The stateful knowledge session
*/
private KieSession createSession() {
KieSession ret = null;
synchronized (SESSIONS) {
ret = SESSIONS.get(getRuleName());
if (ret == null) {
KieBase kbase = loadRuleBase();
if (kbase != null) {
ret = kbase.newKieSession();
if (ret != null) {
ret.setGlobal("epc", _context);
ret.fireAllRules();
SESSIONS.put(getRuleName(), ret);
} else {
System.out.println("The kieSession is null!!!");
}
}
}
}
return (ret);
}
protected KieSession createKnowledgeSession(String processFile) throws Exception {
KieServices ks = KieServices.Factory.get();
KieRepository kr = ks.getRepository();
KieFileSystem kfs = ks.newKieFileSystem();
if (processFile != null) {
Resource process = ResourceFactory.newClassPathResource(processFile);
kfs.write(process);
}
KieBuilder kb = ks.newKieBuilder(kfs);
kb.buildAll();
if (kb.getResults().hasMessages(Level.ERROR)) {
throw new RuntimeException("Build Errors:\n" + kb.getResults().toString());
}
KieContainer kContainer = ks.newKieContainer(kr.getDefaultReleaseId());
KieBase kbase = kContainer.getKieBase();
Environment env = EnvironmentFactory.newEnvironment();
Properties defaultProps = new Properties();
defaultProps.setProperty(
"drools.processSignalManagerFactory", DefaultSignalManagerFactory.class.getName());
defaultProps.setProperty(
"drools.processInstanceManagerFactory",
DefaultProcessInstanceManagerFactory.class.getName());
SessionConfiguration conf = new SessionConfiguration(defaultProps);
KieSession ksession = (StatefulKnowledgeSession) kbase.newKieSession(conf, env);
return ksession;
}
@Override
public void start(BundleContext context) throws Exception {
KieServices ks = KieServices.Factory.get();
ks.newKieClasspathContainer(getClass().getClassLoader());
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
KieBase kbase = createKieBase();
ksession = kbase.newKieSession();
System.out.println("KieSession created.");
for (int i = 0; i < 10; i++) {
// Create a Cheese
Cheese aCheese = EntityHelper.createCheese();
ksession.insert(aCheese);
// Fire the rules
ksession.fireAllRules();
// Check Cheese Price
EntityHelper.cheesePrice(aCheese);
}
System.out.println("Cheese added and rules fired.");
}
private static KieSession createKieSession() {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(
ResourceFactory.newClassPathResource("exceptions/ExceptionHandlingWithSignal.bpmn2"),
ResourceType.BPMN2);
KieBase kbase = kbuilder.newKnowledgeBase();
return kbase.newKieSession();
}
protected void checkForValue(int value) {
List<Integer> list = new ArrayList<Integer>();
KieBase kieBase = (KieBase) container.getComponentInstance("KBase1");
KieSession ksession = kieBase.newKieSession();
ksession.setGlobal("list", list);
ksession.fireAllRules();
ksession.dispose();
assertTrue("Expected:<" + value + "> but was:<" + list.get(0) + ">", list.get(0) == value);
}
@Test
public void testMVELUsingGlobalsInDebugMode() throws Exception {
MVELDebugHandler.setDebugMode(true);
try {
KieBase kbase = loadKnowledgeBase("test_MVELGlobalDebug.drl");
KieSession ksession = kbase.newKieSession();
ksession = SerializationHelper.getSerialisedStatefulKnowledgeSession(ksession, false);
ksession.dispose();
MVELDebugHandler.setDebugMode(false);
} catch (Exception e) {
MVELDebugHandler.setDebugMode(false);
e.printStackTrace();
fail("Should not raise exceptions");
}
}
/**
* 执行规则
*
* @param order
* @param userRule
*/
public void executeRule(Order order, final UserRule userRule) {
System.out.println("Thread name =" + Thread.currentThread().getId());
// initKBase();
loadPackage(userRule);
KieSession kieStatefulSession = (KieSession) kBase.newKieSession();
// KieSession kieStatefulSession = kBase.newStatefulKnowledgeSession();
kieStatefulSession.insert(order);
kieStatefulSession.insert(userRule);
// kieStatefulSession.startProcess(userRule.getUserCode());
kieStatefulSession.fireAllRules(
new AgendaFilter() {
@Override
public boolean accept(Match match) {
return match.getRule().getPackageName().endsWith(userRule.getUserCode());
}
});
kieStatefulSession.dispose();
clearKiePackages();
}
@Test
public void testLocalVariableMVELConsequence() throws Exception {
KieBase kbase = loadKnowledgeBase("test_LocalVariableMVELConsequence.drl");
KieSession ksession = kbase.newKieSession();
final List list = new ArrayList();
ksession.setGlobal("results", list);
ksession.insert(new Person("bob", "stilton"));
ksession.insert(new Person("mark", "brie"));
try {
ksession.fireAllRules();
assertEquals("should have fired twice", 2, list.size());
} catch (Exception e) {
e.printStackTrace();
fail("Should not raise any exception");
}
}
@Test
public void testHelloWorld() throws Exception {
// read in the source
KieBase kbase = loadKnowledgeBase("test_mvel.drl");
KieSession ksession = kbase.newKieSession();
final List list = new ArrayList();
ksession.setGlobal("list", list);
final List list2 = new ArrayList();
ksession.setGlobal("list2", list2);
Cheese c = new Cheese("stilton", 10);
ksession.insert(c);
ksession.fireAllRules();
assertEquals(2, list.size());
assertEquals(BigInteger.valueOf(30), list.get(0));
assertEquals(Integer.valueOf(22), list.get(1));
assertEquals("hello world", list2.get(0));
Date dt = DateUtils.parseDate("10-Jul-1974");
assertEquals(dt, c.getUsedBy());
}
public KieSession createSession() {
return droolsKnowledgeBase.newKieSession();
}
