Examples with EvalCondition org.drools.core.rule.EvalCondition used on opensource projects

Example 16 with EvalCondition

use of org.drools.core.rule.EvalCondition in project drools by kiegroup.

the class AbstractASMEvalBuilder method buildEval.

private RuleConditionElement buildEval(RuleBuildContext context, EvalDescr evalDescr, AnalysisResult analysis, Declaration[] declarations) {
    String className = "eval" + context.getNextId();
    evalDescr.setClassMethodName(className);
    Arrays.sort(declarations, RuleTerminalNode.SortDeclarations.instance);
    EvalCondition eval = new EvalCondition(declarations);
    Map<String, Object> vars = createVariableContext(className, (String) evalDescr.getContent(), context, declarations, null, analysis.getBoundIdentifiers().getGlobals());
    generateMethodTemplate("evalMethod", context, vars);
    byte[] bytecode = createEvalBytecode(context, vars);
    registerInvokerBytecode(context, vars, bytecode, eval);
    return eval;
}

Example 17 with EvalCondition

use of org.drools.core.rule.EvalCondition in project drools by kiegroup.

the class PhreakEvalNode method doLeftInserts.

public void doLeftInserts(EvalConditionNode evalNode, EvalMemory em, LeftTupleSink sink, InternalWorkingMemory wm, TupleSets<LeftTuple> srcLeftTuples, TupleSets<LeftTuple> trgLeftTuples) {
    EvalCondition condition = evalNode.getCondition();
    for (LeftTuple leftTuple = srcLeftTuples.getInsertFirst(); leftTuple != null; ) {
        LeftTuple next = leftTuple.getStagedNext();
        final boolean allowed = condition.isAllowed(leftTuple, wm, em.context);
        if (allowed) {
            boolean useLeftMemory = RuleNetworkEvaluator.useLeftMemory(evalNode, leftTuple);
            trgLeftTuples.addInsert(sink.createLeftTuple(leftTuple, sink, leftTuple.getPropagationContext(), useLeftMemory));
        }
        leftTuple.clearStaged();
        leftTuple = next;
    }
}

Example 18 with EvalCondition

use of org.drools.core.rule.EvalCondition in project drools by kiegroup.

the class JavaDialectBinaryEqualityTest method test1.

@Test
public void test1() {
    KiePackage pkg1 = getKnowledgePackage1();
    KiePackage pkg2 = getKnowledgePackage1();
    KiePackage pkg3 = getKnowledgePackage2();
    RuleImpl rule1 = ((InternalKnowledgePackage) pkg1).getRule("rule1");
    RuleImpl rule2 = ((InternalKnowledgePackage) pkg2).getRule("rule1");
    RuleImpl rule3 = ((InternalKnowledgePackage) pkg3).getRule("rule1");
    // test return value
    Pattern p1 = (Pattern) rule1.getLhs().getChildren().get(0);
    Constraint rvc1 = p1.getConstraints().get(0);
    Pattern p2 = (Pattern) rule2.getLhs().getChildren().get(0);
    Constraint rvc2 = p2.getConstraints().get(0);
    assertNotSame(rvc1, rvc2);
    assertEquals(rvc1, rvc2);
    Pattern p3 = (Pattern) rule3.getLhs().getChildren().get(0);
    Constraint rvc3 = p3.getConstraints().get(0);
    assertNotSame(rvc1, rvc3);
    assertThat(rvc1, not(equalTo(rvc3)));
    // test inline eval
    PredicateConstraint pc1 = getPredicateConstraint(p1);
    PredicateExpression pe1 = (PredicateExpression) pc1.getPredicateExpression();
    PredicateConstraint pc2 = getPredicateConstraint(p2);
    PredicateExpression pe2 = (PredicateExpression) pc2.getPredicateExpression();
    assertNotSame(pe1, pe2);
    assertEquals(pe1, pe2);
    PredicateConstraint pc3 = getPredicateConstraint(p3);
    PredicateExpression pe3 = (PredicateExpression) pc3.getPredicateExpression();
    assertNotSame(pe1, pe3);
    assertThat(pe1, not(equalTo(pe3)));
    // test eval
    EvalCondition ec1 = (EvalCondition) rule1.getLhs().getChildren().get(1);
    EvalExpression ee1 = (EvalExpression) ec1.getEvalExpression();
    EvalCondition ec2 = (EvalCondition) rule2.getLhs().getChildren().get(1);
    EvalExpression ee2 = (EvalExpression) ec2.getEvalExpression();
    assertNotSame(ee1, ee2);
    assertEquals(ee1, ee2);
    EvalCondition ec3 = (EvalCondition) rule3.getLhs().getChildren().get(1);
    EvalExpression ee3 = (EvalExpression) ec3.getEvalExpression();
    assertNotSame(ee1, ee3);
    assertThat(ee1, not(equalTo(ee3)));
    // test consequence
    assertNotSame(rule1.getConsequence(), rule2.getConsequence());
    assertEquals(rule1.getConsequence(), rule2.getConsequence());
    assertNotSame(rule1.getConsequence(), rule3.getConsequence());
    assertThat(rule1.getConsequence(), not(equalTo(rule3.getConsequence())));
    // check LHS equals
    assertNotSame(rule1.getLhs(), rule2.getLhs());
    assertEquals(rule1.getLhs(), rule2.getLhs());
    assertNotSame(rule1.getLhs(), rule3.getLhs());
    assertThat(rule1.getLhs(), not(equalTo(rule3.getLhs())));
}

Example 19 with EvalCondition

use of org.drools.core.rule.EvalCondition in project drools by kiegroup.

the class PhreakEvalNode method doLeftUpdates.

public void doLeftUpdates(EvalConditionNode evalNode, EvalMemory em, LeftTupleSink sink, ReteEvaluator reteEvaluator, TupleSets<LeftTuple> srcLeftTuples, TupleSets<LeftTuple> trgLeftTuples, TupleSets<LeftTuple> stagedLeftTuples) {
    EvalCondition condition = evalNode.getCondition();
    for (LeftTuple leftTuple = srcLeftTuples.getUpdateFirst(); leftTuple != null; ) {
        LeftTuple next = leftTuple.getStagedNext();
        boolean wasPropagated = leftTuple.getFirstChild() != null && leftTuple.getContextObject() != EVAL_LEFT_TUPLE_DELETED;
        boolean allowed = condition.isAllowed(leftTuple, reteEvaluator, em.context);
        if (allowed) {
            leftTuple.setContextObject(null);
            if (wasPropagated) {
                // update
                LeftTuple childLeftTuple = leftTuple.getFirstChild();
                childLeftTuple.setPropagationContext(leftTuple.getPropagationContext());
                normalizeStagedTuples(stagedLeftTuples, childLeftTuple);
                trgLeftTuples.addUpdate(childLeftTuple);
            } else {
                // assert
                trgLeftTuples.addInsert(sink.createLeftTuple(leftTuple, sink, leftTuple.getPropagationContext(), true));
            }
        } else {
            if (wasPropagated) {
                // retract
                leftTuple.setContextObject(EVAL_LEFT_TUPLE_DELETED);
                LeftTuple childLeftTuple = leftTuple.getFirstChild();
                childLeftTuple.setPropagationContext(leftTuple.getPropagationContext());
                RuleNetworkEvaluator.unlinkAndDeleteChildLeftTuple(childLeftTuple, trgLeftTuples, stagedLeftTuples);
            }
        // else do nothing
        }
        leftTuple.clearStaged();
        leftTuple = next;
    }
}

Example 20 with EvalCondition

use of org.drools.core.rule.EvalCondition in project drools by kiegroup.

the class MVELEvalBuilderTest method testSimpleExpression.

@Test
public void testSimpleExpression() {
    InternalKnowledgePackage pkg = CoreComponentFactory.get().createKnowledgePackage("pkg1");
    final RuleDescr ruleDescr = new RuleDescr("rule 1");
    KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl(pkg);
    final KnowledgeBuilderConfigurationImpl conf = pkgBuilder.getBuilderConfiguration();
    DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
    MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect("mvel");
    final RuleBuildContext context = new RuleBuildContext(pkgBuilder, ruleDescr, dialectRegistry, pkg, mvelDialect);
    final InstrumentedDeclarationScopeResolver declarationResolver = new InstrumentedDeclarationScopeResolver();
    final InternalReadAccessor extractor = store.getReader(Cheese.class, "price");
    final Pattern pattern = new Pattern(0, new ClassObjectType(int.class));
    final Declaration declaration = new Declaration("a", extractor, pattern);
    final Map map = new HashMap();
    map.put("a", declaration);
    declarationResolver.setDeclarations(map);
    context.setDeclarationResolver(declarationResolver);
    final EvalDescr evalDescr = new EvalDescr();
    evalDescr.setContent("a == 10");
    final MVELEvalBuilder builder = new MVELEvalBuilder();
    final EvalCondition eval = (EvalCondition) builder.build(context, evalDescr);
    ((MVELEvalExpression) eval.getEvalExpression()).compile((MVELDialectRuntimeData) pkgBuilder.getPackageRegistry(pkg.getName()).getDialectRuntimeRegistry().getDialectData("mvel"));
    InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
    StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
    BuildContext buildContext = new BuildContext(kBase, Collections.emptyList());
    org.drools.core.reteoo.MockLeftTupleSink sink = new MockLeftTupleSink(buildContext);
    MockTupleSource source = new MockTupleSource(1, buildContext);
    source.setObjectCount(1);
    sink.setLeftTupleSource(source);
    final Cheese cheddar = new Cheese("cheddar", 10);
    final InternalFactHandle f0 = (InternalFactHandle) ksession.insert(cheddar);
    final LeftTupleImpl tuple = new LeftTupleImpl(f0, sink, true);
    f0.removeLeftTuple(tuple);
    Object evalContext = eval.createContext();
    assertTrue(eval.isAllowed(tuple, ksession, evalContext));
    cheddar.setPrice(9);
    ksession.update(f0, cheddar);
    assertFalse(eval.isAllowed(tuple, ksession, evalContext));
}