public void updateSink(
final ObjectSink sink,
final PropagationContext context,
final InternalWorkingMemory workingMemory) {
// @todo
// JBRULES-612: the cache MUST be invalidated when a new node type is added to the network, so
// iterate and reset all caches.
final ObjectTypeNode node = (ObjectTypeNode) sink;
final ObjectType newObjectType = node.getObjectType();
InternalWorkingMemoryEntryPoint wmEntryPoint =
(InternalWorkingMemoryEntryPoint)
workingMemory.getWorkingMemoryEntryPoint(this.entryPoint.getEntryPointId());
for (ObjectTypeConf objectTypeConf :
wmEntryPoint.getObjectTypeConfigurationRegistry().values()) {
if (newObjectType.isAssignableFrom(
objectTypeConf.getConcreteObjectTypeNode().getObjectType())) {
objectTypeConf.resetCache();
ObjectTypeNode sourceNode = objectTypeConf.getConcreteObjectTypeNode();
Iterator it =
((ObjectTypeNodeMemory) workingMemory.getNodeMemory(sourceNode)).memory.iterator();
for (ObjectEntry entry = (ObjectEntry) it.next();
entry != null;
entry = (ObjectEntry) it.next()) {
sink.assertObject((InternalFactHandle) entry.getValue(), context, workingMemory);
}
}
}
}
public static void writeInitialFactHandleRightTuples(MarshallerWriteContext context)
throws IOException {
ObjectOutputStream stream = context.stream;
InternalRuleBase ruleBase = context.ruleBase;
ObjectTypeNode initialFactNode =
ruleBase
.getRete()
.getEntryPointNode(EntryPoint.DEFAULT)
.getObjectTypeNodes()
.get(ClassObjectType.InitialFact_ObjectType);
// do we write the fact to the objecttypenode memory
if (initialFactNode != null) {
ObjectHashSet initialFactMemory = (ObjectHashSet) context.wm.getNodeMemory(initialFactNode);
if (initialFactMemory != null && !initialFactMemory.isEmpty()) {
// context.out.println( "InitialFactMemory true int:" + initialFactNode.getId() );
stream.writeBoolean(true);
stream.writeInt(initialFactNode.getId());
// context.out.println( "InitialFact RightTuples" );
writeRightTuples(context.wm.getInitialFactHandle(), context);
} else {
// context.out.println( "InitialFactMemory false " );
stream.writeBoolean(false);
}
} else {
// context.out.println( "InitialFactMemory false " );
stream.writeBoolean(false);
}
}
public static ObjectTypeNode attachObjectTypeNode(BuildContext context, ObjectType objectType) {
final InternalRuleBase ruleBase = context.getRuleBase();
ruleBase.readLock();
try {
InternalWorkingMemory[] wms = context.getWorkingMemories();
EntryPointNode epn = ruleBase.getRete().getEntryPointNode(context.getCurrentEntryPoint());
if (epn == null) {
epn = new EntryPointNode(context.getNextId(), ruleBase.getRete(), context);
if (wms.length > 0) {
epn.attach(wms);
} else {
epn.attach();
}
}
ObjectTypeNode otn = new ObjectTypeNode(context.getNextId(), epn, objectType, context);
long expirationOffset = getExpiratioOffsetForType(context, objectType);
otn.setExpirationOffset(expirationOffset);
if (wms.length > 0) {
otn.attach(wms);
} else {
otn.attach();
}
return otn;
} finally {
ruleBase.readUnlock();
}
}
@Test
public void testSingleSharedEmptyLhs() throws Exception {
KnowledgeBase kbase = buildKnowledgeBase(" ", " ");
ReteooWorkingMemoryInterface wm =
((StatefulKnowledgeSessionImpl) kbase.newStatefulKnowledgeSession()).session;
ObjectTypeNode aotn = getObjectTypeNode(kbase, InitialFactImpl.class);
LeftInputAdapterNode liaNode = (LeftInputAdapterNode) aotn.getSinkPropagator().getSinks()[0];
RuleTerminalNode rtn1 = (RuleTerminalNode) liaNode.getSinkPropagator().getSinks()[0];
RuleTerminalNode rtn2 = (RuleTerminalNode) liaNode.getSinkPropagator().getSinks()[1];
wm.insert(new A());
// LiaNode is in it's own segment
LiaNodeMemory liaMem = (LiaNodeMemory) wm.getNodeMemory(liaNode);
SegmentMemory smem = liaMem.getSegmentMemory();
assertEquals(liaNode, smem.getRootNode());
assertEquals(liaNode, smem.getTipNode());
// each RTN is in it's own segment
SegmentMemory rtnSmem1 = smem.getFirst();
assertEquals(rtn1, rtnSmem1.getRootNode());
assertEquals(rtn1, rtnSmem1.getTipNode());
SegmentMemory rtnSmem2 = rtnSmem1.getNext();
assertEquals(rtn2, rtnSmem2.getRootNode());
assertEquals(rtn2, rtnSmem2.getTipNode());
}
public ObjectTypeNode getObjectTypeNode(KnowledgeBase kbase, Class<?> nodeClass) {
List<ObjectTypeNode> nodes =
((InternalRuleBase) ((KnowledgeBaseImpl) kbase).ruleBase).getRete().getObjectTypeNodes();
for (ObjectTypeNode n : nodes) {
if (((ClassObjectType) n.getObjectType()).getClassType() == nodeClass) {
return n;
}
}
return null;
}
@Test
public void tesShareInSubnetwork() throws Exception {
KnowledgeBase kbase =
buildKnowledgeBase(" A() \n", " A() B() C() \n", " A() not ( B() and C() ) \n");
ReteooWorkingMemoryInterface wm =
((StatefulKnowledgeSessionImpl) kbase.newStatefulKnowledgeSession()).session;
ObjectTypeNode aotn = getObjectTypeNode(kbase, A.class);
LeftInputAdapterNode liaNode = (LeftInputAdapterNode) aotn.getSinkPropagator().getSinks()[0];
RuleTerminalNode rtn1 = (RuleTerminalNode) liaNode.getSinkPropagator().getSinks()[0];
JoinNode bNode = (JoinNode) liaNode.getSinkPropagator().getSinks()[1];
JoinNode cNode = (JoinNode) bNode.getSinkPropagator().getSinks()[0];
RuleTerminalNode rtn2 = (RuleTerminalNode) cNode.getSinkPropagator().getSinks()[0];
RightInputAdapterNode riaNode = (RightInputAdapterNode) cNode.getSinkPropagator().getSinks()[1];
NotNode notNode = (NotNode) liaNode.getSinkPropagator().getSinks()[2];
RuleTerminalNode rtn3 = (RuleTerminalNode) notNode.getSinkPropagator().getSinks()[0];
wm.insert(new A());
wm.insert(new B());
wm.insert(new C());
// LiaNode is in it's own segment
LiaNodeMemory liaMem = (LiaNodeMemory) wm.getNodeMemory(liaNode);
SegmentMemory smem = liaMem.getSegmentMemory();
assertEquals(liaNode, smem.getRootNode());
assertEquals(liaNode, smem.getTipNode());
SegmentMemory rtnSmem1 = smem.getFirst();
assertEquals(rtn1, rtnSmem1.getRootNode());
assertEquals(rtn1, rtnSmem1.getTipNode());
SegmentMemory bSmem = rtnSmem1.getNext();
assertEquals(bNode, bSmem.getRootNode());
assertEquals(cNode, bSmem.getTipNode());
assertNull(bSmem.getFirst()); // segment is not initialized yet
wm.fireAllRules();
SegmentMemory rtn2Smem = bSmem.getFirst();
assertEquals(rtn2, rtn2Smem.getRootNode());
assertEquals(rtn2, rtn2Smem.getTipNode());
SegmentMemory riaSmem = rtn2Smem.getNext();
assertEquals(riaNode, riaSmem.getRootNode());
assertEquals(riaNode, riaSmem.getTipNode());
SegmentMemory notSmem = bSmem.getNext();
assertEquals(notNode, notSmem.getRootNode());
assertEquals(rtn3, notSmem.getTipNode());
}
@Test
public void testMultiSharedPattern() throws Exception {
KnowledgeBase kbase = buildKnowledgeBase(" A() \n", " A() B() \n", " A() B() C() \n");
ReteooWorkingMemoryInterface wm =
((StatefulKnowledgeSessionImpl) kbase.newStatefulKnowledgeSession()).session;
ObjectTypeNode aotn = getObjectTypeNode(kbase, A.class);
LeftInputAdapterNode liaNode = (LeftInputAdapterNode) aotn.getSinkPropagator().getSinks()[0];
RuleTerminalNode rtn1 = (RuleTerminalNode) liaNode.getSinkPropagator().getSinks()[0];
JoinNode bNode = (JoinNode) liaNode.getSinkPropagator().getSinks()[1];
RuleTerminalNode rtn2 = (RuleTerminalNode) bNode.getSinkPropagator().getSinks()[0];
JoinNode cNode = (JoinNode) bNode.getSinkPropagator().getSinks()[1];
RuleTerminalNode rtn3 = (RuleTerminalNode) cNode.getSinkPropagator().getSinks()[0];
wm.insert(new A());
wm.insert(new B());
wm.insert(new C());
// LiaNode is in it's own segment
LiaNodeMemory liaMem = (LiaNodeMemory) wm.getNodeMemory(liaNode);
SegmentMemory smem = liaMem.getSegmentMemory();
assertEquals(liaNode, smem.getRootNode());
assertEquals(liaNode, smem.getTipNode());
SegmentMemory rtnSmem1 = smem.getFirst();
assertEquals(rtn1, rtnSmem1.getRootNode());
assertEquals(rtn1, rtnSmem1.getTipNode());
SegmentMemory bSmem = rtnSmem1.getNext();
assertEquals(bNode, bSmem.getRootNode());
assertEquals(bNode, bSmem.getTipNode());
// child segment is not yet initialised, so null
assertNull(bSmem.getFirst());
// there is no next
assertNull(bSmem.getNext());
wm.fireAllRules(); // child segments should now be initialised
SegmentMemory rtnSmem2 = bSmem.getFirst();
assertEquals(rtn2, rtnSmem2.getRootNode());
assertEquals(rtn2, rtnSmem2.getTipNode());
SegmentMemory cSmem = rtnSmem2.getNext();
assertEquals(cNode, cSmem.getRootNode());
assertEquals(rtn3, cSmem.getTipNode()); // note rtn3 is in the same segment as C
}
/**
* Constructus a LeftInputAdapterNode with a unique id that receives <code>FactHandle</code> from
* a parent <code>ObjectSource</code> and adds it to a given pattern in the resulting Tuples.
*
* @param id The unique id of this node in the current Rete network
* @param source The parent node, where Facts are propagated from
*/
public LeftInputAdapterNode(final int id, final ObjectSource source, final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation());
this.objectSource = source;
this.leftTupleMemoryEnabled = context.isTupleMemoryEnabled();
ObjectSource current = source;
while (!(current instanceof ObjectTypeNode)) {
current = current.getParentObjectSource();
}
ObjectTypeNode otn = (ObjectTypeNode) current;
rootQueryNode = ClassObjectType.DroolsQuery_ObjectType.isAssignableFrom(otn.getObjectType());
}
@Test
public void testEvalDetectionInBetaNode() {
// Tests evals are generated and executed with Java dialect
String drl = "";
drl += "package org.test\n";
drl += "import org.drools.Person\n";
drl += "global java.util.List list\n";
drl += "rule test1\n";
drl += "when\n";
drl += " $s : String()\n";
drl += " $p1 : Person( eval( name \n != $s ), name == ( new String($s+\"xxx\") ) )\n";
drl += "then\n";
drl += "end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newReaderResource(new StringReader(drl)), ResourceType.DRL);
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (kbuilder.hasErrors()) {
fail(kbuilder.getErrors().toString());
}
assertFalse(kbuilder.hasErrors());
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
List<ObjectTypeNode> nodes =
((InternalRuleBase) ((KnowledgeBaseImpl) kbase).ruleBase).getRete().getObjectTypeNodes();
ObjectTypeNode node = null;
for (ObjectTypeNode n : nodes) {
if (((ClassObjectType) n.getObjectType()).getClassType() == Person.class) {
node = n;
break;
}
}
BetaNode betaanode = (BetaNode) node.getSinkPropagator().getSinks()[0];
BetaNodeFieldConstraint[] constraint = (BetaNodeFieldConstraint[]) betaanode.getConstraints();
PredicateConstraint c = (PredicateConstraint) constraint[0];
assertTrue(c.getPredicateExpression() instanceof PredicateExpression);
assertTrue(c.getPredicateExpression() instanceof CompiledInvoker);
assertTrue(!(c.getPredicateExpression() instanceof MVELPredicateExpression));
ReturnValueRestriction r =
(ReturnValueRestriction) ((VariableConstraint) constraint[1]).getRestriction();
assertTrue(r.getExpression() instanceof ReturnValueExpression);
assertTrue(r.getExpression() instanceof CompiledInvoker);
assertTrue(!(r.getExpression() instanceof MVELReturnValueExpression));
}
@Test
public void testEvalDetectionInAlphaNode() {
// Tests evals are generated and executed with Java dialect
String drl = "";
drl += "package org.test\n";
drl += "import org.drools.Person\n";
drl += "global java.util.List list\n";
drl += "rule test1\n";
drl += "when\n";
drl += " $p1 : Person( eval( name \n != null ), name == ( new String(\"xxx\") ) )\n";
drl += "then\n";
drl += "end\n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newReaderResource(new StringReader(drl)), ResourceType.DRL);
KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (kbuilder.hasErrors()) {
fail(kbuilder.getErrors().toString());
}
assertFalse(kbuilder.hasErrors());
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
List<ObjectTypeNode> nodes =
((InternalRuleBase) ((KnowledgeBaseImpl) kbase).ruleBase).getRete().getObjectTypeNodes();
ObjectTypeNode node = null;
for (ObjectTypeNode n : nodes) {
if (((ClassObjectType) n.getObjectType()).getClassType() == Person.class) {
node = n;
break;
}
}
AlphaNode alphanode = (AlphaNode) node.getSinkPropagator().getSinks()[0];
PredicateConstraint c = (PredicateConstraint) alphanode.getConstraint();
assertTrue(c.getPredicateExpression() instanceof PredicateExpression);
assertTrue(c.getPredicateExpression() instanceof CompiledInvoker);
assertTrue(!(c.getPredicateExpression() instanceof MVELPredicateExpression));
alphanode = (AlphaNode) alphanode.getSinkPropagator().getSinks()[0];
AlphaNodeFieldConstraint constraint = alphanode.getConstraint();
if (constraint instanceof LiteralConstraint) {
FieldValue fieldVal = ((LiteralConstraint) constraint).getField();
assertEquals("xxx", fieldVal.getValue());
}
}
public String getNameSufix() {
char[] name = node.getEntryPoint().getEntryPointId().toCharArray();
for (int i = 0; i < name.length; i++) {
if (!Character.isLetter(name[i]) && name[i] != ' ') {
name[i] = '_';
}
}
return new String(name);
}
public static Class<?> getNodeClass(ObjectTypeNode objectTypeNode) {
if (objectTypeNode == null) {
return null;
}
ObjectType objectType = objectTypeNode.getObjectType();
return objectType != null && objectType instanceof ClassObjectType
? ((ClassObjectType) objectType).getClassType()
: null;
}
@Test
public void testSinglePattern() throws Exception {
KnowledgeBase kbase = buildKnowledgeBase(" A() \n");
ReteooWorkingMemoryInterface wm =
((StatefulKnowledgeSessionImpl) kbase.newStatefulKnowledgeSession()).session;
ObjectTypeNode aotn = getObjectTypeNode(kbase, A.class);
LeftInputAdapterNode liaNode = (LeftInputAdapterNode) aotn.getSinkPropagator().getSinks()[0];
RuleTerminalNode rtn = (RuleTerminalNode) liaNode.getSinkPropagator().getSinks()[0];
wm.insert(new A());
// LiaNode and Rule are in same segment
LiaNodeMemory liaMem = (LiaNodeMemory) wm.getNodeMemory(liaNode);
SegmentMemory smem = liaMem.getSegmentMemory();
assertEquals(liaNode, smem.getRootNode());
assertEquals(rtn, smem.getTipNode());
assertNull(smem.getNext());
assertNull(smem.getFirst());
}
@Test
public void testSubnetworkNoSharing() throws Exception {
KnowledgeBase kbase = buildKnowledgeBase(" A() not ( B() and C() ) \n");
ReteooWorkingMemoryInterface wm =
((StatefulKnowledgeSessionImpl) kbase.newStatefulKnowledgeSession()).session;
ObjectTypeNode aotn = getObjectTypeNode(kbase, A.class);
LeftInputAdapterNode liaNode = (LeftInputAdapterNode) aotn.getSinkPropagator().getSinks()[0];
JoinNode bNode = (JoinNode) liaNode.getSinkPropagator().getSinks()[0];
JoinNode cNode = (JoinNode) bNode.getSinkPropagator().getSinks()[0];
RightInputAdapterNode riaNode = (RightInputAdapterNode) cNode.getSinkPropagator().getSinks()[0];
NotNode notNode = (NotNode) liaNode.getSinkPropagator().getSinks()[1];
RuleTerminalNode rtn1 = (RuleTerminalNode) notNode.getSinkPropagator().getSinks()[0];
wm.insert(new A());
wm.insert(new B());
wm.insert(new C());
// LiaNode and Rule are in same segment
LiaNodeMemory liaMem = (LiaNodeMemory) wm.getNodeMemory(liaNode);
SegmentMemory smem = liaMem.getSegmentMemory();
assertEquals(liaNode, smem.getRootNode());
assertEquals(rtn1, smem.getTipNode());
assertNull(smem.getNext());
assertNull(smem.getFirst());
SegmentMemory bSmem =
wm.getNodeMemory(bNode).getSegmentMemory(); // it's nested inside of smem, so lookup from wm
assertEquals(bNode, bSmem.getRootNode());
assertEquals(riaNode, bSmem.getTipNode());
BetaMemory bm = (BetaMemory) wm.getNodeMemory(notNode);
assertEquals(bSmem, bm.getSubnetworkSegmentMemory()); // check subnetwork ref was made
}
@Test
public void testMapAccessorWithStaticFieldAccess() {
String str =
""
+ "package org.test \n"
+ "import "
+ Person.class.getCanonicalName()
+ "\n"
+ "import "
+ Address.class.getCanonicalName()
+ "\n"
+ "import "
+ TestEnum.class.getCanonicalName()
+ "\n"
+ "global java.util.List list \n"
+ "rule \"show\" \n"
+ "when \n"
+ " $m : Person( namedAddresses[TestEnum.ONE] == new Address('s1'), namedAddresses[TestEnum.ONE].street == new Address('s1').street ) \n"
+ "then \n"
+ " list.add('r1'); \n"
+ "end \n";
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newByteArrayResource(str.getBytes()), ResourceType.DRL);
if (kbuilder.hasErrors()) {
fail(kbuilder.getErrors().toString());
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
StatefulKnowledgeSession ksession = createKnowledgeSession(kbase);
List list = new ArrayList();
ksession.setGlobal("list", list);
Person p = new Person("yoda");
p.getNamedAddresses().put(TestEnum.ONE, new Address("s1"));
ksession.insert(p);
ksession.fireAllRules();
assertEquals("r1", list.get(0));
// Check it was built with MVELReturnValueExpression constraint
List<ObjectTypeNode> nodes =
((InternalRuleBase) ((KnowledgeBaseImpl) kbase).ruleBase).getRete().getObjectTypeNodes();
ObjectTypeNode node = null;
for (ObjectTypeNode n : nodes) {
if (((ClassObjectType) n.getObjectType()).getClassType() == Person.class) {
node = n;
break;
}
}
AlphaNode alphanode = (AlphaNode) node.getSinkPropagator().getSinks()[0];
AlphaNodeFieldConstraint constraint = alphanode.getConstraint();
if (constraint instanceof MvelConstraint) {
assertTrue(
((MvelConstraint) alphanode.getConstraint()).getFieldExtractor()
instanceof MVELObjectClassFieldReader);
assertEquals(
new Address("s1"), ((MvelConstraint) alphanode.getConstraint()).getField().getValue());
}
alphanode = (AlphaNode) alphanode.getSinkPropagator().getSinks()[0];
constraint = alphanode.getConstraint();
if (constraint instanceof MvelConstraint) {
assertTrue(
((MvelConstraint) alphanode.getConstraint()).getFieldExtractor()
instanceof MVELObjectClassFieldReader);
assertEquals(
new Address("s1").getStreet(),
((MvelConstraint) alphanode.getConstraint()).getField().getValue());
}
}
/* (non-Javadoc)
* @see org.drools.management.ObjectTypeNodeMonitorMbean#getObjectType()
*/
public String getObjectType() {
return node.getObjectType().toString();
}
/* (non-Javadoc)
* @see org.drools.management.ObjectTypeNodeMonitorMbean#getPartitionId()
*/
public String getPartitionId() {
return node.getPartitionId().toString();
}
/* (non-Javadoc)
* @see org.drools.management.ObjectTypeNodeMonitorMbean#isEvent()
*/
public boolean isEvent() {
return node.getObjectType().isEvent();
}
/* (non-Javadoc)
* @see org.drools.management.ObjectTypeNodeMonitorMbean#getExpirationOffset()
*/
public long getExpirationOffset() {
return node.getExpirationOffset();
}
/* (non-Javadoc)
* @see org.drools.management.ObjectTypeNodeMonitorMbean#getEntryPoint()
*/
public String getEntryPoint() {
return node.getEntryPoint().toString();
}
/**
* Adds the <code>ObjectSink</code> so that it may receive <code>Objects</code> propagated from
* this <code>ObjectSource</code>.
*
* @param objectSink The <code>ObjectSink</code> to receive propagated <code>Objects</code>. Rete
* only accepts <code>ObjectTypeNode</code>s as parameters to this method, though.
*/
public void addObjectSink(final ObjectSink objectSink) {
final ObjectTypeNode node = (ObjectTypeNode) objectSink;
this.objectTypeNodes.put(node.getObjectType(), node);
}
protected void removeObjectSink(final ObjectSink objectSink) {
final ObjectTypeNode node = (ObjectTypeNode) objectSink;
this.objectTypeNodes.remove(node.getObjectType());
}
public static ReteooStatefulSession readSession(
ReteooStatefulSession session,
DefaultAgenda agenda,
long time,
boolean multithread,
MarshallerReaderContext context)
throws IOException, ClassNotFoundException {
if (session.getTimerService() instanceof PseudoClockScheduler) {
PseudoClockScheduler clock = (PseudoClockScheduler) session.getTimerService();
clock.advanceTime(time, TimeUnit.MILLISECONDS);
}
// RuleFlowGroups need to reference the session
for (RuleFlowGroup group : agenda.getRuleFlowGroupsMap().values()) {
((RuleFlowGroupImpl) group).setWorkingMemory(session);
}
context.wm = session;
context.handles.put(
context.wm.getInitialFactHandle().getId(), context.wm.getInitialFactHandle());
if (context.stream.readBoolean()) {
InternalFactHandle initialFactHandle = context.wm.getInitialFactHandle();
int sinkId = context.stream.readInt();
ObjectTypeNode initialFactNode = (ObjectTypeNode) context.sinks.get(sinkId);
if (initialFactNode == null) {
// ------ START RANT ------
// The following code is as bad as it looks, but since I was so far
// unable to convince Mark that creating OTNs on demand is really bad,
// I have to continue doing it :)
EntryPointNode defaultEPNode =
context.ruleBase.getRete().getEntryPointNode(EntryPoint.DEFAULT);
BuildContext buildContext =
new BuildContext(
context.ruleBase, context.ruleBase.getReteooBuilder().getIdGenerator());
buildContext.setPartitionId(RuleBasePartitionId.MAIN_PARTITION);
buildContext.setObjectTypeNodeMemoryEnabled(true);
initialFactNode =
new ObjectTypeNode(
sinkId, defaultEPNode, ClassObjectType.InitialFact_ObjectType, buildContext);
// isn't contention something everybody loves?
context.ruleBase.lock();
try {
// Yeah, I know, because one session is being deserialized, we go and lock all of them...
initialFactNode.attach(buildContext);
} finally {
context.ruleBase.unlock();
}
// ------- END RANT -----
}
ObjectHashSet initialFactMemory = (ObjectHashSet) context.wm.getNodeMemory(initialFactNode);
initialFactMemory.add(initialFactHandle);
readRightTuples(initialFactHandle, context);
}
while (context.readShort() == PersisterEnums.ENTRY_POINT) {
String entryPointId = context.stream.readUTF();
WorkingMemoryEntryPoint wmep = context.wm.getEntryPoints().get(entryPointId);
readFactHandles(context, ((NamedEntryPoint) wmep).getObjectStore());
}
InternalFactHandle handle = context.wm.getInitialFactHandle();
while (context.stream.readShort() == PersisterEnums.LEFT_TUPLE) {
LeftTupleSink sink = (LeftTupleSink) context.sinks.get(context.stream.readInt());
LeftTuple leftTuple = sink.createLeftTuple(handle, sink, true);
readLeftTuple(leftTuple, context);
}
readPropagationContexts(context);
readActivations(context);
readActionQueue(context);
readTruthMaintenanceSystem(context);
if (processMarshaller != null) {
processMarshaller.readProcessInstances(context);
} else {
short type = context.stream.readShort();
if (PersisterEnums.END != type) {
throw new IllegalStateException(
"No process marshaller, unable to unmarshall type: " + type);
}
}
if (processMarshaller != null) {
processMarshaller.readWorkItems(context);
} else {
short type = context.stream.readShort();
if (PersisterEnums.END != type) {
throw new IllegalStateException(
"No process marshaller, unable to unmarshall type: " + type);
}
}
if (processMarshaller != null) {
// This actually does ALL timers, due to backwards compatability issues
// It will read in old JBPM binaries, but always write to the new binary format.
processMarshaller.readProcessTimers(context);
} else {
short type = context.stream.readShort();
if (PersisterEnums.END != type) {
throw new IllegalStateException(
"No process marshaller, unable to unmarshall type: " + type);
}
}
// no legacy jBPM timers, so handle locally
while (context.readShort() == PersisterEnums.DEFAULT_TIMER) {
InputMarshaller.readTimer(context);
}
if (multithread) {
session.startPartitionManagers();
}
return session;
}
/* (non-Javadoc)
* @see org.drools.management.ObjectTypeNodeMonitorMbean#getId()
*/
public int getId() {
return node.getId();
}
public void testQueryTerminalNode() {
final ClassObjectType queryObjectType = new ClassObjectType(DroolsQuery.class);
final ObjectTypeNode queryObjectTypeNode =
new ObjectTypeNode(this.buildContext.getNextId(), queryObjectType, buildContext);
queryObjectTypeNode.attach();
ClassFieldExtractor extractor =
cache.getExtractor(DroolsQuery.class, "name", DroolsQuery.class.getClassLoader());
FieldValue field = FieldFactory.getFieldValue("query-1");
final Evaluator evaluator = ValueType.STRING_TYPE.getEvaluator(Operator.EQUAL);
LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
AlphaNode alphaNode =
new AlphaNode(this.buildContext.getNextId(), constraint, queryObjectTypeNode, buildContext);
alphaNode.attach();
final LeftInputAdapterNode liaNode =
new LeftInputAdapterNode(this.buildContext.getNextId(), alphaNode, this.buildContext);
liaNode.attach();
final ClassObjectType cheeseObjectType = new ClassObjectType(Cheese.class);
final ObjectTypeNode cheeseObjectTypeNode =
new ObjectTypeNode(this.buildContext.getNextId(), cheeseObjectType, buildContext);
cheeseObjectTypeNode.attach();
extractor = cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
field = FieldFactory.getFieldValue("stilton");
constraint = new LiteralConstraint(extractor, evaluator, field);
alphaNode =
new AlphaNode(
this.buildContext.getNextId(), constraint, cheeseObjectTypeNode, buildContext);
alphaNode.attach();
BuildContext buildContext =
new BuildContext(ruleBase, ruleBase.getReteooBuilder().getIdGenerator());
buildContext.setTupleMemoryEnabled(false);
final JoinNode joinNode =
new JoinNode(
this.buildContext.getNextId(),
liaNode,
alphaNode,
EmptyBetaConstraints.getInstance(),
buildContext);
joinNode.attach();
final Query query = new Query("query-1");
final QueryTerminalNode queryNode =
new QueryTerminalNode(this.buildContext.getNextId(), joinNode, query, query.getLhs());
queryNode.attach();
final org.drools.rule.Package pkg = new org.drools.rule.Package("com.drools.test");
pkg.addRule(query);
try {
final Field pkgField = ruleBase.getClass().getSuperclass().getDeclaredField("pkgs");
pkgField.setAccessible(true);
final Map pkgs = (Map) pkgField.get(ruleBase);
pkgs.put(pkg.getName(), pkg);
} catch (final Exception e) {
Assert.fail("Should not throw any exception: " + e.getMessage());
}
final WorkingMemory workingMemory = ruleBase.newStatefulSession();
QueryResults results = workingMemory.getQueryResults("query-1");
assertEquals(0, results.size());
final Cheese stilton1 = new Cheese("stilton", 100);
final FactHandle handle1 = workingMemory.insert(stilton1);
results = workingMemory.getQueryResults("query-1");
assertEquals(1, results.size());
final Cheese cheddar = new Cheese("cheddar", 55);
workingMemory.insert(cheddar);
results = workingMemory.getQueryResults("query-1");
assertEquals(1, results.size());
final Cheese stilton2 = new Cheese("stilton", 5);
final FactHandle handle2 = workingMemory.insert(stilton2);
results = workingMemory.getQueryResults("query-1");
assertEquals(2, results.size());
QueryResult result = results.get(0);
assertEquals(1, result.size());
assertEquals(stilton2, result.get(0));
result = results.get(1);
assertEquals(1, result.size());
assertEquals(stilton1, result.get(0));
int i = 0;
for (final Iterator it = results.iterator(); it.hasNext(); ) {
result = (QueryResult) it.next();
assertEquals(1, result.size());
if (i == 1) {
assertSame(stilton1, result.get(0));
} else {
assertSame(stilton2, result.get(0));
}
i++;
}
workingMemory.retract(handle1);
results = workingMemory.getQueryResults("query-1");
assertEquals(1, results.size());
workingMemory.retract(handle2);
results = workingMemory.getQueryResults("query-1");
assertEquals(0, results.size());
}
public void attachAlphaNodes(
final BuildContext context,
final BuildUtils utils,
final Pattern pattern,
List<Constraint> alphaConstraints)
throws InvalidPatternException {
// Drools Query ObjectTypeNode never has memory, but other ObjectTypeNode/AlphaNoesNodes may (if
// not in sequential),
// so need to preserve, so we can restore after this node is added. LeftMemory and Terminal
// remain the same once set.
boolean objectMemory = context.isObjectTypeNodeMemoryEnabled();
boolean alphaMemory = context.isAlphaMemoryAllowed();
ObjectType objectType = pattern.getObjectType();
if (pattern.getObjectType() instanceof ClassObjectType) {
// Is this the query node, if so we don't want any memory
if (DroolsQuery.class == ((ClassObjectType) pattern.getObjectType()).getClassType()) {
context.setTupleMemoryEnabled(false);
context.setObjectTypeNodeMemoryEnabled(false);
context.setTerminalNodeMemoryEnabled(false);
context.setAlphaNodeMemoryAllowed(false);
}
}
context.setObjectSource(
(ObjectSource)
utils.attachNode(
context,
new EntryPointNode(context.getNextId(), context.getRuleBase().getRete(), context)));
ObjectTypeNode otn =
new ObjectTypeNode(
context.getNextId(), (EntryPointNode) context.getObjectSource(), objectType, context);
if (objectType.isEvent()
&& EventProcessingOption.STREAM.equals(
context.getRuleBase().getConfiguration().getEventProcessingMode())) {
long expirationOffset = getExpiratioOffsetForType(context, objectType);
if (expirationOffset != -1) {
// expiration policy is set, so use it
otn.setExpirationOffset(expirationOffset);
} else {
// otherwise calculate it based on behaviours and temporal constraints
for (Behavior behavior : pattern.getBehaviors()) {
if (behavior.getExpirationOffset() != -1) {
expirationOffset = Math.max(behavior.getExpirationOffset(), expirationOffset);
}
}
long distance = context.getTemporalDistance().getExpirationOffset(pattern);
if (distance == -1) {
// it means the rules have no temporal constraints, or
// the constraints require events to be hold forever. In this
// case, we allow type declarations to override the implicit
// expiration offset by defining an expiration policy with the
// @expires tag
otn.setExpirationOffset(expirationOffset);
} else {
otn.setExpirationOffset(Math.max(distance, expirationOffset));
}
}
}
context.setObjectSource((ObjectSource) utils.attachNode(context, otn));
for (final Iterator<Constraint> it = alphaConstraints.iterator(); it.hasNext(); ) {
final AlphaNodeFieldConstraint constraint = (AlphaNodeFieldConstraint) it.next();
context.pushRuleComponent(constraint);
context.setObjectSource(
(ObjectSource)
utils.attachNode(
context,
new AlphaNode(
context.getNextId(),
(AlphaNodeFieldConstraint) constraint,
context.getObjectSource(),
context)));
context.popRuleComponent();
}
// now restore back to original values
context.setObjectTypeNodeMemoryEnabled(objectMemory);
context.setAlphaNodeMemoryAllowed(alphaMemory);
}
