/**
*
*
* <pre>
*
*
* type == "cheddar" && price > 10
*
*
* </pre>
*
* Test the use of the composite AND constraint. Composite AND constraints are only used when
* nested inside other field constraints, as the top level AND is implicit
*
* @throws IntrospectionException
*/
public void testCompositeAndConstraint() {
final ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
final InternalWorkingMemory workingMemory =
(InternalWorkingMemory) ruleBase.newStatefulSession();
final ClassFieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.STRING_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint1 = new LiteralConstraint(extractor, evaluator, field);
final ClassFieldExtractor priceExtractor =
cache.getExtractor(Cheese.class, "price", getClass().getClassLoader());
final FieldValue priceField = FieldFactory.getFieldValue(10);
final Evaluator priceEvaluator = ValueType.INTEGER_TYPE.getEvaluator(Operator.GREATER);
final LiteralConstraint constraint2 =
new LiteralConstraint(priceExtractor, priceEvaluator, priceField);
final Cheese cheddar = new Cheese("cheddar", 15);
final AndConstraint constraint = new AndConstraint();
constraint.addAlphaConstraint(constraint1);
constraint.addAlphaConstraint(constraint2);
final ContextEntry context = constraint.createContextEntry();
final InternalFactHandle cheddarHandle = (InternalFactHandle) workingMemory.insert(cheddar);
// check constraint
assertTrue(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
cheddar.setPrice(5);
((ShadowProxy) cheddarHandle.getObject()).updateProxy();
assertFalse(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
cheddar.setType("stilton");
((ShadowProxy) cheddarHandle.getObject()).updateProxy();
assertFalse(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
cheddar.setPrice(15);
((ShadowProxy) cheddarHandle.getObject()).updateProxy();
assertFalse(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
}
/**
*
*
* <pre>
*
*
* ( Cheese (type "cheddar") )
*
*
* </pre>
*
* This is currently the same as using a ReturnValueConstraint just that it doesn't need any
* requiredDeclarations
*
* @throws IntrospectionException
*/
public void testLiteralConstraint() throws IntrospectionException {
final ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
final InternalWorkingMemory workingMemory =
(InternalWorkingMemory) ruleBase.newStatefulSession();
final ClassFieldExtractor extractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue("cheddar");
final Evaluator evaluator = ValueType.STRING_TYPE.getEvaluator(Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
final ContextEntry context = constraint.createContextEntry();
final Cheese cheddar = new Cheese("cheddar", 5);
final InternalFactHandle cheddarHandle = (InternalFactHandle) workingMemory.insert(cheddar);
// check constraint
assertTrue(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
final Cheese stilton = new Cheese("stilton", 5);
final InternalFactHandle stiltonHandle = (InternalFactHandle) workingMemory.insert(stilton);
// check constraint
assertFalse(constraint.isAllowed(stiltonHandle.getObject(), workingMemory, context));
}
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]));
}
/**
*
*
* <pre>
*
*
* Cheese( price == 5 )
*
*
* </pre>
*
* @throws IntrospectionException
*/
@Test
public void testPrimitiveLiteralConstraint() throws IntrospectionException {
final ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
final InternalWorkingMemory workingMemory =
(InternalWorkingMemory) ruleBase.newStatefulSession();
final ClassFieldReader extractor =
store.getReader(Cheese.class, "price", getClass().getClassLoader());
final FieldValue field = FieldFactory.getFieldValue(5);
final Evaluator evaluator = equals.getEvaluator(ValueType.PINTEGER_TYPE, Operator.EQUAL);
final LiteralConstraint constraint = new LiteralConstraint(extractor, evaluator, field);
final ContextEntry context = constraint.createContextEntry();
final Cheese cheddar = new Cheese("cheddar", 5);
final InternalFactHandle cheddarHandle = (InternalFactHandle) workingMemory.insert(cheddar);
// check constraint
assertTrue(constraint.isAllowed(cheddarHandle, workingMemory, context));
final Cheese stilton = new Cheese("stilton", 10);
final InternalFactHandle stiltonHandle = (InternalFactHandle) workingMemory.insert(stilton);
// check constraint
assertFalse(constraint.isAllowed(stiltonHandle, workingMemory, context));
}
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]);
}
@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]));
}
/*
* 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());
}
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);
}
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);
}
@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());
}
/**
*
*
* <pre>
*
*
* Cheese( ( type == "cheddar" && price > 10) || ( type == "e;stilton"e; && price < 10 ) )
*
*
* </pre>
*
* Test the use of the composite OR constraint.
*
* @throws IntrospectionException
*/
public void testNestedCompositeConstraints() {
final ReteooRuleBase ruleBase = (ReteooRuleBase) RuleBaseFactory.newRuleBase();
final InternalWorkingMemory workingMemory =
(InternalWorkingMemory) ruleBase.newStatefulSession();
final ClassFieldExtractor typeExtractor =
cache.getExtractor(Cheese.class, "type", getClass().getClassLoader());
final FieldValue cheddarField = FieldFactory.getFieldValue("cheddar");
final Evaluator stringEqual = ValueType.STRING_TYPE.getEvaluator(Operator.EQUAL);
// type == 'cheddar'
final LiteralConstraint constraint1 =
new LiteralConstraint(typeExtractor, stringEqual, cheddarField);
final ClassFieldExtractor priceExtractor =
cache.getExtractor(Cheese.class, "price", getClass().getClassLoader());
final FieldValue field10 = FieldFactory.getFieldValue(10);
final Evaluator integerGreater = ValueType.INTEGER_TYPE.getEvaluator(Operator.GREATER);
// price > 10
final LiteralConstraint constraint2 =
new LiteralConstraint(priceExtractor, integerGreater, field10);
// type == 'cheddar' && price > 10
final AndConstraint and1 = new AndConstraint();
and1.addAlphaConstraint(constraint1);
and1.addAlphaConstraint(constraint2);
final FieldValue stiltonField = FieldFactory.getFieldValue("stilton");
// type == 'stilton'
final LiteralConstraint constraint3 =
new LiteralConstraint(typeExtractor, stringEqual, stiltonField);
final Evaluator integerLess = ValueType.INTEGER_TYPE.getEvaluator(Operator.LESS);
// price < 10
final LiteralConstraint constraint4 =
new LiteralConstraint(priceExtractor, integerLess, field10);
// type == 'stilton' && price < 10
final AndConstraint and2 = new AndConstraint();
and2.addAlphaConstraint(constraint3);
and2.addAlphaConstraint(constraint4);
// ( type == 'cheddar' && price > 10 ) || ( type == 'stilton' && price < 10 )
final OrConstraint constraint = new OrConstraint();
constraint.addAlphaConstraint(and1);
constraint.addAlphaConstraint(and2);
final ContextEntry context = constraint.createContextEntry();
final Cheese cheddar = new Cheese("cheddar", 15);
final InternalFactHandle cheddarHandle = (InternalFactHandle) workingMemory.insert(cheddar);
// check constraint
assertTrue(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
cheddar.setPrice(5);
((ShadowProxy) cheddarHandle.getObject()).updateProxy();
assertFalse(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
cheddar.setType("stilton");
((ShadowProxy) cheddarHandle.getObject()).updateProxy();
assertTrue(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
cheddar.setPrice(15);
((ShadowProxy) cheddarHandle.getObject()).updateProxy();
assertFalse(constraint.isAllowed(cheddarHandle.getObject(), workingMemory, context));
}
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 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());
}
