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

Example 91 with Pattern

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

the class AnnotationsTest method testNestedAnnotationsWithMultiplicity.

@Test
public void testNestedAnnotationsWithMultiplicity() {
    String drl = "package org.drools.test; " + "import " + Outer.class.getName().replace("$", ".") + "; " + "import " + Inner.class.getName().replace("$", ".") + "; " + "rule Foo " + "when " + "  String() @Outer( values = { @Inner( text = \"hello\" ), @Inner( text = \"world\" ) } ) " + "then " + "end ";
    KieHelper helper = new KieHelper();
    helper.addContent(drl, ResourceType.DRL);
    assertEquals(0, helper.verify().getMessages().size());
    Pattern p = ((Pattern) ((RuleImpl) helper.build().getRule("org.drools.test", "Foo")).getLhs().getChildren().get(0));
    Map<String, AnnotationDefinition> defs = p.getAnnotations();
    assertEquals(1, defs.size());
    AnnotationDefinition outer = defs.get(Outer.class.getName().replace("$", "."));
    assertNotNull(outer);
    Object val = outer.getPropertyValue("values");
    assertNotNull(val);
    assertTrue(val instanceof AnnotationDefinition[]);
}

Example 92 with Pattern

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

the class ForallBuilder method build.

public RuleConditionElement build(final RuleBuildContext context, final BaseDescr descr, final Pattern prefixPattern) {
    final ForallDescr forallDescr = (ForallDescr) descr;
    final PatternBuilder patternBuilder = (PatternBuilder) context.getDialect().getBuilder(PatternDescr.class);
    final Pattern basePattern = (Pattern) patternBuilder.build(context, forallDescr.getBasePattern());
    if (basePattern == null) {
        return null;
    }
    final Forall forall = new Forall(basePattern);
    // adding the newly created forall CE to the build stack
    // this is necessary in case of local declaration usage
    context.getDeclarationResolver().pushOnBuildStack(forall);
    for (BaseDescr baseDescr : forallDescr.getRemainingPatterns()) {
        final Pattern anotherPattern = (Pattern) patternBuilder.build(context, (PatternDescr) baseDescr);
        forall.addRemainingPattern(anotherPattern);
    }
    if (forallDescr.getDescrs().size() == 1) {
        // An optimization for unlinking, where we allow unlinking if the resulting 'not' node has no constraints
        // we need to record this here, due to getRemainingPatterns injecting "this == " + BASE_IDENTIFIER $__forallBaseIdentifier
        // which we wish to ignore
        PatternDescr p = (PatternDescr) forallDescr.getDescrs().get(0);
        if (p.getConstraint().getDescrs().isEmpty()) {
            forall.setEmptyBetaConstraints(true);
        }
    }
    // poping the forall
    context.getDeclarationResolver().popBuildStack();
    return forall;
}

Example 93 with Pattern

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

the class PatternBuilder method build.

protected List<Constraint> build(RuleBuildContext context, PatternDescr patternDescr, Pattern pattern, ConstraintConnectiveDescr descr, MVELDumper.MVELDumperContext mvelCtx) {
    List<Constraint> constraints = new ArrayList<Constraint>();
    List<BaseDescr> initialDescrs = new ArrayList<BaseDescr>(descr.getDescrs());
    for (BaseDescr d : initialDescrs) {
        boolean isXPath = isXPathDescr(d);
        if (isXPath && pattern.hasXPath()) {
            registerDescrBuildError(context, patternDescr, "More than a single oopath constraint is not allowed in the same pattern");
            return constraints;
        }
        Constraint constraint = isXPath ? buildXPathDescr(context, patternDescr, pattern, d, mvelCtx) : buildCcdDescr(context, patternDescr, pattern, d, descr, mvelCtx);
        if (constraint != null) {
            Declaration declCorrXpath = getDeclarationCorrespondingToXpath(pattern, isXPath, constraint);
            if (declCorrXpath == null) {
                constraints.add(constraint);
            } else {
                // A constraint is using a declration bound to an xpath in the same pattern
                // Move the constraint inside the last chunk of the xpath defining this declaration, rewriting it as 'this'
                Pattern modifiedPattern = pattern.clone();
                modifiedPattern.setObjectType(new ClassObjectType(declCorrXpath.getDeclarationClass()));
                constraint = buildCcdDescr(context, patternDescr, modifiedPattern, d.replaceVariable(declCorrXpath.getBindingName(), "this"), descr, mvelCtx);
                if (constraint != null) {
                    pattern.getXpathConstraint().getChunks().getLast().addConstraint(constraint);
                }
            }
        }
    }
    if (descr.getDescrs().size() > initialDescrs.size()) {
        // The initial build process may have generated other constraint descrs.
        // This happens when null-safe references or inline-casts are used
        // These additional constraints must be built, and added as
        List<BaseDescr> additionalDescrs = new ArrayList<BaseDescr>(descr.getDescrs());
        additionalDescrs.removeAll(initialDescrs);
        if (!additionalDescrs.isEmpty()) {
            List<Constraint> additionalConstraints = new ArrayList<Constraint>();
            for (BaseDescr d : additionalDescrs) {
                Constraint constraint = buildCcdDescr(context, patternDescr, pattern, d, descr, mvelCtx);
                if (constraint != null) {
                    additionalConstraints.add(constraint);
                }
            }
            constraints.addAll(0, additionalConstraints);
        }
    }
    return constraints;
}

Example 94 with Pattern

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

the class KnowledgeBuilderTest method testTimeWindowBehavior.

@Test
public void testTimeWindowBehavior() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final TypeDeclarationDescr typeDeclDescr = new TypeDeclarationDescr(StockTick.class.getName());
    typeDeclDescr.addAnnotation("role", "event");
    packageDescr.addTypeDeclaration(typeDeclDescr);
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr patternDescr = new PatternDescr(StockTick.class.getName(), "$tick");
    final BehaviorDescr windowDescr = new BehaviorDescr("window");
    windowDescr.setSubType("time");
    windowDescr.setParameters(Collections.singletonList("60000"));
    patternDescr.addBehavior(windowDescr);
    lhs.addDescr(patternDescr);
    ruleDescr.setConsequence("System.out.println( $tick );");
    builder.addPackage(packageDescr);
    assertLength(0, builder.getErrors().getErrors());
    InternalKnowledgePackage pkg = builder.getPackageRegistry().get("p1").getPackage();
    final RuleImpl rule = pkg.getRule("rule-1");
    assertNotNull(rule);
    final Pattern pattern = (Pattern) rule.getLhs().getChildren().get(0);
    assertEquals(StockTick.class.getName(), ((ClassObjectType) pattern.getObjectType()).getClassType().getName());
    final Behavior window = pattern.getBehaviors().get(0);
    assertEquals(Behavior.BehaviorType.TIME_WINDOW, window.getType());
    assertEquals(60000, ((SlidingTimeWindow) window).getSize());
}

Example 95 with Pattern

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

the class KnowledgeBuilderTest method testReturnValueMethodCompare.

@Test
public void testReturnValueMethodCompare() {
    final KnowledgeBuilderImpl builder1 = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr1 = new PackageDescr("package1");
    createReturnValueRule(packageDescr1, " x + y ");
    builder1.addPackage(packageDescr1);
    if (builder1.hasErrors()) {
        fail(builder1.getErrors().toString());
    }
    final Pattern pattern1 = (Pattern) ((RuleImpl) builder1.getPackage("package1").getRules().iterator().next()).getLhs().getChildren().get(0);
    final Constraint returnValue1 = pattern1.getConstraints().get(0);
    final KnowledgeBuilderImpl builder2 = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr2 = new PackageDescr("package2");
    createReturnValueRule(packageDescr2, " x + y ");
    builder2.addPackage(packageDescr2);
    final Pattern pattern2 = (Pattern) ((RuleImpl) builder2.getPackage("package2").getRules().iterator().next()).getLhs().getChildren().get(0);
    final Constraint returnValue2 = pattern2.getConstraints().get(0);
    final KnowledgeBuilderImpl builder3 = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr3 = new PackageDescr("package3");
    createReturnValueRule(packageDescr3, " x - y ");
    builder3.addPackage(packageDescr3);
    final Pattern pattern3 = (Pattern) ((RuleImpl) builder3.getPackage("package3").getRules().iterator().next()).getLhs().getChildren().get(0);
    final Constraint returnValue3 = pattern3.getConstraints().get(0);
    assertEquals(returnValue1, returnValue2);
    assertFalse(returnValue1.equals(returnValue3));
    assertFalse(returnValue2.equals(returnValue3));
}