public void testLiteralConstraintAssertSequentialMode() throws Exception {
RuleBaseConfiguration config = new RuleBaseConfiguration();
config.setSequential(true);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase(config);
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = new ReteooWorkingMemory(buildContext.getNextId(), ruleBase);
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final ClassFieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.OBJECT_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
// With Memory
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext); // has memory
final MockObjectSink sink = new MockObjectSink();
alphaNode.addObjectSink(sink);
final Cheese cheddar = new Cheese("cheddar", 5);
final DefaultFactHandle f0 = (DefaultFactHandle) workingMemory.insert(cheddar);
// check sink is empty
assertLength(0, sink.getAsserted());
// check alpha memory is empty
final AlphaMemory memory = (AlphaMemory) workingMemory.getNodeMemory(alphaNode);
assertNull(memory.facts);
// object should assert as it passes text
alphaNode.assertObject(f0, context, workingMemory);
assertEquals(1, sink.getAsserted().size());
assertNull(memory.facts);
Object[] list = (Object[]) sink.getAsserted().get(0);
assertSame(cheddar, workingMemory.getObject((DefaultFactHandle) list[0]));
final Cheese stilton = new Cheese("stilton", 6);
final DefaultFactHandle f1 = new DefaultFactHandle(1, stilton);
// object should NOT assert as it does not pass test
alphaNode.assertObject(f1, context, workingMemory);
assertLength(1, sink.getAsserted());
assertNull(memory.facts);
list = (Object[]) sink.getAsserted().get(0);
assertSame(cheddar, workingMemory.getObject((DefaultFactHandle) list[0]));
}
public void testRetractObjectWithMemory() throws Exception {
RuleBaseConfiguration config = new RuleBaseConfiguration();
config.setAlphaMemory(true);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase(config);
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final FieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.OBJECT_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
buildContext.setAlphaNodeMemoryAllowed(true);
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext); // has memory
final MockObjectSink sink = new MockObjectSink();
alphaNode.addObjectSink(sink);
final Cheese cheddar = new Cheese("cheddar", 5);
final DefaultFactHandle f0 = new DefaultFactHandle(0, cheddar);
// check alpha memory is empty
final AlphaMemory memory = (AlphaMemory) workingMemory.getNodeMemory(alphaNode);
assertEquals(0, memory.facts.size());
// object should assert as it passes text
alphaNode.assertObject(f0, context, workingMemory);
assertEquals(1, memory.facts.size());
final DefaultFactHandle f1 = new DefaultFactHandle(1, "cheese");
// object should NOT retract as it doesn't exist
alphaNode.retractObject(f1, context, workingMemory);
assertLength(0, sink.getRetracted());
assertEquals(1, memory.facts.size());
assertTrue("Should contain 'cheddar handle'", memory.facts.contains(f0));
// object should retract as it does exist
alphaNode.retractObject(f0, context, workingMemory);
assertLength(1, sink.getRetracted());
assertEquals(0, memory.facts.size());
final Object[] list = (Object[]) sink.getRetracted().get(0);
assertSame(f0, list[0]);
}
/**
* Constructor specifying the unique id of the node in the Rete network, the position of the propagating <code>FactHandleImpl</code> in
* <code>ReteTuple</code> and the source that propagates the receive <code>ReteTuple<code>s.
*
* @param id
* Unique id
* @param source
* The <code>TupleSource</code> which propagates the received <code>ReteTuple</code>
*/
public RightInputAdapterNode(
final int id, final LeftTupleSource source, final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation());
this.tupleSource = source;
this.tupleMemoryEnabled = context.isTupleMemoryEnabled();
}
@Test
public void testLiteralConstraintAssertObjectWithoutMemory() throws Exception {
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.INSERTION, null, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final ClassFieldReader extractor =
store.getReader(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getInstance().getFieldValue("cheddar");
final MvelConstraint constraint =
new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);
// With Memory
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext); // no memory
final MockObjectSink sink = new MockObjectSink();
alphaNode.addObjectSink(sink);
final Cheese cheddar = new Cheese("cheddar", 5);
final DefaultFactHandle f0 = (DefaultFactHandle) workingMemory.insert(cheddar);
// check sink is empty
assertLength(0, sink.getAsserted());
// check alpha memory is empty
final AlphaMemory memory = (AlphaMemory) workingMemory.getNodeMemory(alphaNode);
// object should assert as it passes text
alphaNode.assertObject(f0, context, workingMemory);
assertEquals(1, sink.getAsserted().size());
Object[] list = (Object[]) sink.getAsserted().get(0);
assertSame(cheddar, workingMemory.getObject((DefaultFactHandle) list[0]));
final Cheese stilton = new Cheese("stilton", 6);
final DefaultFactHandle f1 = new DefaultFactHandle(1, stilton);
// object should NOT assert as it does not pass test
alphaNode.assertObject(f1, context, workingMemory);
assertLength(1, sink.getAsserted());
list = (Object[]) sink.getAsserted().get(0);
assertSame(cheddar, workingMemory.getObject((DefaultFactHandle) list[0]));
}
public EntryPointNode(final int id, final ObjectSource objectSource, final BuildContext context) {
this(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation(),
objectSource,
context
.getCurrentEntryPoint()); // irrelevant for this node, since it overrides sink
// management
}
/*
* dont need to test with and without memory on this, as it was already done
* on the previous two tests. This just test AlphaNode With a different
* Constraint type.
*/
public void testReturnValueConstraintAssertObject() throws Exception {
RuleBaseConfiguration config = new RuleBaseConfiguration();
config.setAlphaMemory(false);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase(config);
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final FieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.OBJECT_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext);
final MockObjectSink sink = new MockObjectSink();
alphaNode.addObjectSink(sink);
final Cheese cheddar = new Cheese("cheddar", 5);
final DefaultFactHandle f0 = (DefaultFactHandle) workingMemory.insert(cheddar);
assertLength(0, sink.getAsserted());
// object should assert as it passes text
alphaNode.assertObject(f0, context, workingMemory);
assertLength(1, sink.getAsserted());
final Object[] list = (Object[]) sink.getAsserted().get(0);
assertSame(cheddar, workingMemory.getObject((DefaultFactHandle) list[0]));
final Cheese stilton = new Cheese("stilton", 6);
f0.setObject(stilton);
sink.getAsserted().clear();
// object should not assert as it does not pass text
alphaNode.assertObject(f0, context, workingMemory);
assertLength(0, sink.getAsserted());
}
/**
* 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());
}
public void testIsMemoryAllowedOverride() throws Exception {
RuleBaseConfiguration config = new RuleBaseConfiguration();
config.setAlphaMemory(true);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase(config);
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final ClassFieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.OBJECT_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
// With Memory
buildContext.setAlphaNodeMemoryAllowed(false);
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext); // has memory
final MockObjectSink sink = new MockObjectSink();
alphaNode.addObjectSink(sink);
final Cheese cheddar = new Cheese("cheddar", 5);
final DefaultFactHandle f0 = (DefaultFactHandle) workingMemory.insert(cheddar);
// check sink is empty
assertLength(0, sink.getAsserted());
// check alpha memory is empty
final AlphaMemory memory = (AlphaMemory) workingMemory.getNodeMemory(alphaNode);
assertNull(memory.facts);
// object should assert as it passes text
alphaNode.assertObject(f0, context, workingMemory);
assertEquals(1, sink.getAsserted().size());
// memory should be one, as even though isAlphaMemory is on for the configuration, the build
// never allows memory
assertNull(memory.facts);
}
/**
* Construct given a semantic <code>ObjectType</code> and the provided unique id. All <code>
* ObjectTypdeNode</code> have node memory.
*
* @param id The unique id for the node.
* @param objectType The semantic object-type differentiator.
*/
public ObjectTypeNode(
final int id,
final EntryPointNode source,
final ObjectType objectType,
final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation(),
source,
context.getRuleBase().getConfiguration().getAlphaNodeHashingThreshold());
this.objectType = objectType;
setObjectMemoryEnabled(context.isObjectTypeNodeMemoryEnabled());
}
public BuildContext createContext() {
RuleBaseConfiguration conf = new RuleBaseConfiguration();
ReteooRuleBase rbase = new ReteooRuleBase("ID", conf);
BuildContext buildContext = new BuildContext(rbase, rbase.getReteooBuilder().getIdGenerator());
Rule rule = new Rule("rule1", "org.pkg1", null);
org.drools.rule.Package pkg = new org.drools.rule.Package("org.pkg1");
pkg.getDialectRuntimeRegistry().setDialectData("mvel", new MVELDialectRuntimeData());
pkg.addRule(rule);
buildContext.setRule(rule);
return buildContext;
}
public void attach(BuildContext context) {
constraints.init(context, getType());
setUnificationJoin();
this.rightInput.addObjectSink(this);
this.leftInput.addTupleSink(this, context);
if (context == null) {
return;
}
for (InternalWorkingMemory workingMemory : context.getWorkingMemories()) {
final PropagationContext propagationContext =
new PropagationContextImpl(
workingMemory.getNextPropagationIdCounter(),
PropagationContext.RULE_ADDITION,
null,
null,
null);
/* FIXME: This should be generalized at BetaNode level and the
* instanceof should be removed!
*
* When L&R Unlinking is enabled, we only need to update the side
* that is initially linked. If there are tuples to be propagated,
* they will trigger the update (thus, population) of the other side.
* */
if (!lrUnlinkingEnabled || !(this instanceof JoinNode)) {
this.rightInput.updateSink(this, propagationContext, workingMemory);
}
this.leftInput.updateSink(this, propagationContext, workingMemory);
}
}
public void setupJoinNode() {
buildContext = createContext();
joinNode =
(JoinNode)
BetaNodeBuilder.create(NodeTypeEnums.JoinNode, buildContext)
.setLeftType(A.class)
.setBinding("object", "$object")
.setRightType(B.class)
.setConstraint("object", "!=", "$object")
.build();
sinkNode = new JoinNode();
sinkNode.setId(1);
sinkNode.setConstraints(new EmptyBetaConstraints());
joinNode.addTupleSink(sinkNode);
wm = (InternalWorkingMemory) buildContext.getRuleBase().newStatefulSession(true);
bm = (BetaMemory) wm.getNodeMemory(joinNode);
bm0 = (BetaMemory) wm.getNodeMemory(sinkNode);
smem = new SegmentMemory(joinNode);
bm.setSegmentMemory(smem);
smem0 = new SegmentMemory(sinkNode);
bm0.setSegmentMemory(smem0);
smem.add(smem0);
}
/**
* Construct.
*
* @param id The unique id for this node.
* @param leftInput The left input <code>TupleSource</code>.
* @param rightInput The right input <code>ObjectSource</code>.
* @param joinNodeBinder The constraints to be applied to the right objects
*/
public ExistsNode(
final int id,
final LeftTupleSource leftInput,
final ObjectSource rightInput,
final BetaConstraints joinNodeBinder,
final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation(),
leftInput,
rightInput,
joinNodeBinder,
context);
this.tupleMemoryEnabled = context.isTupleMemoryEnabled();
}
public QueryElementNode(
final int id,
final LeftTupleSource tupleSource,
final QueryElement queryElement,
final boolean tupleMemoryEnabled,
final boolean openQuery,
final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation());
this.tupleSource = tupleSource;
this.queryElement = queryElement;
this.tupleMemoryEnabled = tupleMemoryEnabled;
this.openQuery = openQuery;
initMasks(context, tupleSource);
}
/**
* Construct given a semantic <code>ObjectType</code> and the provided unique id. All <code>
* ObjectTypdeNode</code> have node memory.
*
* @param id The unique id for the node.
* @param objectType The semantic object-type differentiator.
*/
public ObjectTypeNode(
final int id,
final EntryPointNode source,
final ObjectType objectType,
final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation(),
source,
context.getRuleBase().getConfiguration().getAlphaNodeHashingThreshold());
this.objectType = objectType;
this.lrUnlinkingEnabled = context.getRuleBase().getConfiguration().isLRUnlinkingEnabled();
setObjectMemoryEnabled(context.isObjectTypeNodeMemoryEnabled());
if (ClassObjectType.DroolsQuery_ObjectType.isAssignableFrom(objectType)) {
queryNode = true;
}
}
@Override
protected void initDeclaredMask(BuildContext context, LeftTupleSource leftInput) {
if (context == null || context.getLastBuiltPatterns() == null) {
// only happens during unit tests
rightDeclaredMask = Long.MAX_VALUE;
super.initDeclaredMask(context, leftInput);
return;
}
if (!(rightInput instanceof RightInputAdapterNode)) {
Pattern pattern = context.getLastBuiltPatterns()[0]; // right input pattern
ObjectType objectType = pattern.getObjectType();
if (!(objectType instanceof ClassObjectType)) {
// InitialFact has no type declaration and cannot be property specific
// Only ClassObjectType can use property specific
rightDeclaredMask = Long.MAX_VALUE;
}
Class objectClass = ((ClassObjectType) objectType).getClassType();
if (isPropertyReactive(context, objectClass)) {
rightListenedProperties = pattern.getListenedProperties();
List<String> settableProperties = getSettableProperties(context.getRuleBase(), objectClass);
rightDeclaredMask = calculatePositiveMask(rightListenedProperties, settableProperties);
rightDeclaredMask |= constraints.getListenedPropertyMask(settableProperties);
rightNegativeMask = calculateNegativeMask(rightListenedProperties, settableProperties);
} else {
// if property reactive is not on, then accept all modification propagations
rightDeclaredMask = Long.MAX_VALUE;
}
} else {
rightDeclaredMask = Long.MAX_VALUE;
// There would have been no right input pattern, so swap current to first, so leftInput can
// still work
context.setLastBuiltPattern(context.getLastBuiltPatterns()[0]);
}
super.initDeclaredMask(context, leftInput);
}
public void testMemory() {
RuleBaseConfiguration config = new RuleBaseConfiguration();
config.setAlphaMemory(false);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase(config);
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final ClassFieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.OBJECT_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, null, buildContext);
final AlphaMemory memory = (AlphaMemory) workingMemory.getNodeMemory(alphaNode);
assertNotNull(memory);
}
public AccumulateNode(
final int id,
final LeftTupleSource leftInput,
final ObjectSource rightInput,
final AlphaNodeFieldConstraint[] resultConstraints,
final BetaConstraints sourceBinder,
final BetaConstraints resultBinder,
final Accumulate accumulate,
final boolean unwrapRightObject,
final BuildContext context) {
super(
id,
context.getPartitionId(),
context.getRuleBase().getConfiguration().isMultithreadEvaluation(),
leftInput,
rightInput,
sourceBinder,
context);
this.resultBinder = resultBinder;
this.resultConstraints = resultConstraints;
this.accumulate = accumulate;
this.unwrapRightObject = unwrapRightObject;
this.tupleMemoryEnabled = context.isTupleMemoryEnabled();
}
public void testUpdateSinkWithMemory() throws FactException, IntrospectionException {
// An AlphaNode with memory should not try and repropagate from its source
// Also it should only update the latest tuple sinky
RuleBaseConfiguration config = new RuleBaseConfiguration();
config.setAlphaMemory(true);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase(config);
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final FieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.OBJECT_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
buildContext.setAlphaNodeMemoryAllowed(true);
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext); // has memory
alphaNode.attach();
final MockObjectSink sink1 = new MockObjectSink();
alphaNode.addObjectSink(sink1);
// Assert a single fact which should be in the AlphaNode memory and also
// propagated to the
// the tuple sink
final Cheese cheese = new Cheese("cheddar", 0);
final DefaultFactHandle handle1 = new DefaultFactHandle(1, cheese);
alphaNode.assertObject(handle1, context, workingMemory);
// Create a fact that should not be propagated, since the alpha node restriction will filter it
// out
final Cheese stilton = new Cheese("stilton", 10);
final DefaultFactHandle handle2 = new DefaultFactHandle(2, stilton);
// adding handle to the mock source
source.addFact(handle2);
alphaNode.assertObject(handle2, context, workingMemory);
assertLength(1, sink1.getAsserted());
// Attach a new tuple sink
final MockObjectSink sink2 = new MockObjectSink();
// Tell the alphanode to update the new node. Make sure the first sink1
// is not updated
// likewise the source should not do anything
alphaNode.updateSink(sink2, context, workingMemory);
assertLength(1, sink1.getAsserted());
assertLength(1, sink2.getAsserted());
assertEquals(0, source.getUdated());
}
/**
* Test just tuple assertions
*
* @throws AssertionException
*/
@Test
public void testAssertTupleSequentialMode() throws Exception {
RuleBaseConfiguration conf = new RuleBaseConfiguration();
conf.setSequential(true);
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
BuildContext buildContext =
new BuildContext(ruleBase, ruleBase.getReteooBuilder().getIdGenerator());
buildContext.setTupleMemoryEnabled(false);
// overide the original node, so we an set the BuildContext
this.node =
new AccumulateNode(
15,
this.tupleSource,
this.objectSource,
new AlphaNodeFieldConstraint[0],
EmptyBetaConstraints.getInstance(),
EmptyBetaConstraints.getInstance(),
this.accumulate,
false,
buildContext);
this.node.addTupleSink(this.sink);
this.workingMemory =
new ReteooWorkingMemory(1, (ReteooRuleBase) RuleBaseFactory.newRuleBase(conf));
this.memory = ((AccumulateMemory) this.workingMemory.getNodeMemory(this.node)).betaMemory;
final DefaultFactHandle f0 =
(DefaultFactHandle)
this.workingMemory.getFactHandleFactory().newFactHandle("cheese", null, null, null);
final DefaultFactHandle f1 =
(DefaultFactHandle)
this.workingMemory
.getFactHandleFactory()
.newFactHandle("other cheese", null, null, null);
final LeftTupleImpl tuple0 = new LeftTupleImpl(f0, null, true);
this.node.assertObject(f0, this.context, this.workingMemory);
this.node.assertObject(f1, this.context, this.workingMemory);
// assert tuple, should not add to left memory, since we are in sequential mode
this.node.assertLeftTuple(
tuple0,
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null, f0),
this.workingMemory);
// check memories
assertNull(this.memory.getLeftTupleMemory());
assertEquals(2, this.memory.getRightTupleMemory().size());
assertEquals(
"Wrong number of elements in matching objects list ",
2,
this.accumulator.getMatchingObjects().size());
// assert tuple, should not add left memory
final LeftTupleImpl tuple1 = new LeftTupleImpl(f1, null, true);
this.node.assertLeftTuple(
tuple1,
new PropagationContextImpl(0, PropagationContext.ASSERTION, null, null, f1),
this.workingMemory);
assertNull(this.memory.getLeftTupleMemory());
assertEquals(
"Wrong number of elements in matching objects list ",
2,
this.accumulator.getMatchingObjects().size());
assertEquals("Two tuples should have been propagated", 2, this.sink.getAsserted().size());
}
public void execute(Map<String, Object> context, List<String[]> args) {
BuildContext buildContext = (BuildContext) context.get("BuildContext");
if (args.size() >= 1) {
// The first argument list is the node parameters
String[] a = args.get(0);
String name = a[0];
String leftInput = a[1];
String rightInput = a[2];
String sourceType = a[3];
String expr = a[4];
LeftTupleSource leftTupleSource;
if ("mock".equals(leftInput)) {
leftTupleSource = Mockito.mock(LeftTupleSource.class);
} else {
leftTupleSource = (LeftTupleSource) context.get(leftInput);
}
ObjectSource rightObjectSource;
if ("mock".equals(rightInput)) {
rightObjectSource = Mockito.mock(ObjectSource.class);
} else {
rightObjectSource = (ObjectSource) context.get(rightInput);
}
Pattern sourcePattern;
Pattern resultPattern;
try {
sourcePattern = reteTesterHelper.getPattern(0, sourceType);
// we always use the accumulate function "sum", so return type is always Number
resultPattern =
reteTesterHelper.getPattern(buildContext.getNextId(), Number.class.getName());
} catch (Exception e) {
throw new IllegalArgumentException(
"Not possible to process arguments: " + Arrays.toString(a));
}
BetaConstraints betaSourceConstraints = new EmptyBetaConstraints();
AlphaNodeFieldConstraint[] alphaResultConstraint = new AlphaNodeFieldConstraint[0];
// the following arguments are constraints
for (int i = 1; i < args.size(); i++) {
a = args.get(i);
String type = a[0];
String fieldName = a[1];
String operator = a[2];
String val = a[3];
if ("source".equals(type)) {
Declaration declr = (Declaration) context.get(val);
try {
BetaNodeFieldConstraint sourceBetaConstraint =
this.reteTesterHelper.getBoundVariableConstraint(
sourcePattern, fieldName, declr, operator);
betaSourceConstraints =
new SingleBetaConstraints(
sourceBetaConstraint, buildContext.getRuleBase().getConfiguration());
} catch (IntrospectionException e) {
throw new IllegalArgumentException();
}
} else if ("result".equals(type)) {
alphaResultConstraint = new AlphaNodeFieldConstraint[1];
try {
alphaResultConstraint[0] =
this.reteTesterHelper.getLiteralConstraint(resultPattern, fieldName, operator, val);
} catch (IntrospectionException e) {
throw new IllegalArgumentException(
"Unable to configure alpha constraint: " + Arrays.toString(a), e);
}
}
}
NodeTestCase testCase = (NodeTestCase) context.get("TestCase");
List<String> classImports = new ArrayList<String>();
List<String> pkgImports = new ArrayList<String>();
for (String imp : testCase.getImports()) {
if (imp.endsWith(".*")) {
pkgImports.add(imp.substring(0, imp.lastIndexOf('.')));
} else {
classImports.add(imp);
}
}
// build an external function executor
MVELCompilationUnit compilationUnit =
new MVELCompilationUnit(
name,
expr,
pkgImports.toArray(new String[0]), // pkg imports
classImports.toArray(new String[0]), // imported classes
new String[] {}, // imported methods
new String[] {}, // imported fields
new String[] {}, // global identifiers
new Declaration[] {}, // previous declarations
new Declaration[] {(Declaration) context.get(expr)}, // local declarations
new String[] {}, // other identifiers
new String[] {}, // input identifiers
new String[] {}, // input types
4,
false);
AccumulateFunction accFunction = new SumAccumulateFunction();
Accumulator accumulator = new MVELAccumulatorFunctionExecutor(compilationUnit, accFunction);
((MVELCompileable) accumulator).compile(Thread.currentThread().getContextClassLoader());
Accumulate accumulate =
new Accumulate(
sourcePattern,
new Declaration[] {}, // required declaration
new Declaration[] {}, // inner declarations
new Accumulator[] {accumulator});
AccumulateNode accNode =
new AccumulateNode(
buildContext.getNextId(),
leftTupleSource,
rightObjectSource,
alphaResultConstraint,
betaSourceConstraints,
new EmptyBetaConstraints(),
new Behavior[] {},
accumulate,
false,
buildContext);
accNode.attach();
context.put(name, accNode);
} else {
StringBuilder msgBuilder = new StringBuilder();
msgBuilder.append("Can not parse AccumulateNode step arguments: \n");
for (String[] arg : args) {
msgBuilder.append(" ");
msgBuilder.append(Arrays.toString(arg));
msgBuilder.append("\n");
}
throw new IllegalArgumentException(msgBuilder.toString());
}
}
public static boolean isPropertyReactive(BuildContext context, Class<?> objectClass) {
TypeDeclaration typeDeclaration = context.getRuleBase().getTypeDeclaration(objectClass);
return typeDeclaration != null && typeDeclaration.isPropertyReactive();
}
@Test
public void testUpdateSinkWithoutMemory() throws FactException, IntrospectionException {
// An AlphaNode should try and repropagate from its source
ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
BuildContext buildContext =
new BuildContext(ruleBase, ((ReteooRuleBase) ruleBase).getReteooBuilder().getIdGenerator());
ReteooWorkingMemory workingMemory = (ReteooWorkingMemory) ruleBase.newStatefulSession();
final Rule rule = new Rule("test-rule");
final PropagationContext context =
new PropagationContextImpl(0, PropagationContext.INSERTION, null, null, null);
final MockObjectSource source = new MockObjectSource(buildContext.getNextId());
final InternalReadAccessor extractor =
store.getReader(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getInstance().getFieldValue("cheddar");
final MvelConstraint constraint =
new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);
final AlphaNode alphaNode =
new AlphaNode(buildContext.getNextId(), constraint, source, buildContext); // no memory
alphaNode.attach();
final MockObjectSink sink1 = new MockObjectSink();
alphaNode.addObjectSink(sink1);
// Assert a single fact which should be in the AlphaNode memory and also
// propagated to the
// the tuple sink
final Cheese cheese = new Cheese("cheddar", 0);
final DefaultFactHandle handle1 = new DefaultFactHandle(1, cheese);
// adding handle to the mock source
source.addFact(handle1);
alphaNode.assertObject(handle1, context, workingMemory);
// Create a fact that should not be propagated, since the alpha node restriction will filter it
// out
final Cheese stilton = new Cheese("stilton", 10);
final DefaultFactHandle handle2 = new DefaultFactHandle(2, stilton);
// adding handle to the mock source
source.addFact(handle2);
alphaNode.assertObject(handle2, context, workingMemory);
assertLength(1, sink1.getAsserted());
// Attach a new tuple sink
final MockObjectSink sink2 = new MockObjectSink();
// Tell the alphanode to update the new node. Make sure the first sink1
// is not updated
// likewise the source should not do anything
alphaNode.updateSink(sink2, context, workingMemory);
assertLength(1, sink1.getAsserted());
assertLength(1, sink2.getAsserted());
assertEquals(1, source.getUdated());
}
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 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;
}
