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]);
}
@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);
}
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());
}
}
@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 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());
}
