Examples with PackageDescr org.drools.compiler.lang.descr.PackageDescr used on opensource projects

Example 16 with PackageDescr

use of org.drools.compiler.lang.descr.PackageDescr in project drools by kiegroup.

the class PackageHandler method end.

public Object end(final String uri, final String localName, final ExtensibleXmlParser parser) throws SAXException {
    final PackageDescr packageDescr = (PackageDescr) parser.getData();
    final Element element = parser.endElementBuilder();
    NodeList imports = element.getElementsByTagName("import");
    for (int i = 0, length = imports.getLength(); i < length; i++) {
        final String importEntry = ((Element) imports.item(i)).getAttribute("name");
        if (importEntry == null || importEntry.trim().equals("")) {
            throw new SAXParseException("<import> cannot be blank", parser.getLocator());
        }
        packageDescr.addImport(new ImportDescr(importEntry));
    }
    NodeList importfunctions = element.getElementsByTagName("importfunction");
    for (int i = 0, length = importfunctions.getLength(); i < length; i++) {
        final String importfunctionEntry = ((Element) importfunctions.item(i)).getAttribute("name");
        if (importfunctionEntry == null || importfunctionEntry.trim().equals("")) {
            throw new SAXParseException("<importfunction> cannot be blank", parser.getLocator());
        }
        FunctionImportDescr funcdescr = new FunctionImportDescr();
        funcdescr.setTarget(importfunctionEntry);
        packageDescr.addFunctionImport(funcdescr);
    }
    NodeList globals = element.getElementsByTagName("global");
    for (int i = 0, length = globals.getLength(); i < length; i++) {
        final String identifier = ((Element) globals.item(i)).getAttribute("identifier");
        if (identifier == null || identifier.trim().equals("")) {
            throw new SAXParseException("<global> must have an identifier", parser.getLocator());
        }
        final String type = ((Element) globals.item(i)).getAttribute("type");
        if (type == null || type.trim().equals("")) {
            throw new SAXParseException("<global> must have specify a type", parser.getLocator());
        }
        final GlobalDescr global = new GlobalDescr(identifier, type);
        packageDescr.addGlobal(global);
    }
    return packageDescr;
}

Example 17 with PackageDescr

use of org.drools.compiler.lang.descr.PackageDescr in project drools by kiegroup.

the class QueryHandler method end.

public Object end(final String uri, final String localName, final ExtensibleXmlParser parser) throws SAXException {
    final Element element = parser.endElementBuilder();
    final QueryDescr queryDescr = (QueryDescr) parser.getCurrent();
    final AndDescr lhs = queryDescr.getLhs();
    if (lhs == null || lhs.getDescrs().isEmpty()) {
        throw new SAXParseException("<query> requires a LHS", parser.getLocator());
    }
    ((PackageDescr) parser.getData()).addRule(queryDescr);
    return queryDescr;
}

Example 18 with PackageDescr

use of org.drools.compiler.lang.descr.PackageDescr in project drools by kiegroup.

the class RuleBuilderTest method testBuildBigDecimalLiteralConstraint.

@Test
public void testBuildBigDecimalLiteralConstraint() throws Exception {
    final PackageDescr pkgDescr = new PackageDescr("org.drools");
    final RuleDescr ruleDescr = new RuleDescr("Test Rule");
    AndDescr andDescr = new AndDescr();
    PatternDescr patDescr = new PatternDescr("java.math.BigDecimal", "$bd");
    ExprConstraintDescr fcd = new ExprConstraintDescr("this == 10");
    patDescr.addConstraint(fcd);
    andDescr.addDescr(patDescr);
    ruleDescr.setLhs(andDescr);
    ruleDescr.setConsequence("");
    pkgDescr.addRule(ruleDescr);
    final KnowledgeBuilderImpl kBuilder = new KnowledgeBuilderImpl();
    kBuilder.addPackage(pkgDescr);
    assertTrue(kBuilder.getErrors().toString(), kBuilder.getErrors().isEmpty());
    final RuleImpl rule = kBuilder.getPackages()[0].getRule("Test Rule");
    final GroupElement and = rule.getLhs();
    final Pattern pat = (Pattern) and.getChildren().get(0);
    if (pat.getConstraints().get(0) instanceof MvelConstraint) {
        final MvelConstraint fc = (MvelConstraint) pat.getConstraints().get(0);
        assertTrue("Wrong class. Expected java.math.BigDecimal. Found: " + fc.getField().getValue().getClass(), fc.getField().getValue() instanceof BigDecimal);
    }
}

Example 19 with PackageDescr

use of org.drools.compiler.lang.descr.PackageDescr in project drools by kiegroup.

the class RuleBuilderTest method testBuild.

@Test
public void testBuild() throws Exception {
    final DrlParser parser = new DrlParser(LanguageLevelOption.DRL5);
    final KnowledgeBuilderImpl kBuilder = new KnowledgeBuilderImpl();
    kBuilder.addPackage(new PackageDescr("org.drools"));
    InternalKnowledgePackage pkg = kBuilder.getPackage("org.drools");
    final PackageDescr pkgDescr = parser.parse(new InputStreamReader(getClass().getResourceAsStream("nestedConditionalElements.drl")));
    // just checking there is no parsing errors
    assertFalse(parser.getErrors().toString(), parser.hasErrors());
    pkg.addGlobal("results", List.class);
    final RuleDescr ruleDescr = pkgDescr.getRules().get(0);
    final String ruleClassName = "RuleClassName.java";
    ruleDescr.setClassName(ruleClassName);
    ruleDescr.addAttribute(new AttributeDescr("dialect", "java"));
    kBuilder.addPackage(pkgDescr);
    assertTrue(kBuilder.getErrors().toString(), kBuilder.getErrors().isEmpty());
    final RuleImpl rule = kBuilder.getPackage("org.drools.compiler").getRule("test nested CEs");
    assertEquals("There should be 2 rule level declarations", 2, rule.getDeclarations().size());
    // second GE should be a not
    final GroupElement not = (GroupElement) rule.getLhs().getChildren().get(1);
    assertTrue(not.isNot());
    // not has no outer declarations
    assertTrue(not.getOuterDeclarations().isEmpty());
    assertEquals(1, not.getInnerDeclarations().size());
    assertTrue(not.getInnerDeclarations().keySet().contains("$state"));
    // second not
    final GroupElement not2 = (GroupElement) ((GroupElement) not.getChildren().get(0)).getChildren().get(1);
    assertTrue(not2.isNot());
    // not has no outer declarations
    assertTrue(not2.getOuterDeclarations().isEmpty());
    assertEquals(1, not2.getInnerDeclarations().size());
    assertTrue(not2.getInnerDeclarations().keySet().contains("$likes"));
}

Example 20 with PackageDescr

use of org.drools.compiler.lang.descr.PackageDescr in project drools by kiegroup.

the class MVELConsequenceBuilderTest method testSimpleExpression.

@Test
public void testSimpleExpression() throws Exception {
    PackageDescr pkgDescr = new PackageDescr("pkg1");
    KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl();
    pkgBuilder.addPackage(pkgDescr);
    InternalKnowledgePackage pkg = pkgBuilder.getPackageRegistry("pkg1").getPackage();
    final RuleDescr ruleDescr = new RuleDescr("rule 1");
    ruleDescr.setNamespace("pkg1");
    ruleDescr.setConsequence("modify (cheese) {price = 5 };\nretract (cheese)");
    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 ObjectType cheeseObjeectType = new ClassObjectType(Cheese.class);
    final Pattern pattern = new Pattern(0, cheeseObjeectType, "cheese");
    final GroupElement subrule = new GroupElement(GroupElement.AND);
    subrule.addChild(pattern);
    final Map<String, Declaration> map = new HashMap<String, Declaration>();
    map.put("cheese", pattern.getDeclaration());
    declarationResolver.setDeclarations(map);
    context.setDeclarationResolver(declarationResolver);
    final MVELConsequenceBuilder builder = new MVELConsequenceBuilder();
    builder.build(context, RuleImpl.DEFAULT_CONSEQUENCE_NAME);
    InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
    PropagationContextFactory pctxFactory = kBase.getConfiguration().getComponentFactory().getPropagationContextFactory();
    kBase.addPackage(pkg);
    StatefulKnowledgeSessionImpl ksession = (StatefulKnowledgeSessionImpl) kBase.newKieSession();
    final Cheese cheddar = new Cheese("cheddar", 10);
    final InternalFactHandle f0 = (InternalFactHandle) ksession.insert(cheddar);
    final LeftTupleImpl tuple = new LeftTupleImpl(f0, null, true);
    f0.removeLeftTuple(tuple);
    final AgendaItem item = new AgendaItemImpl(0, tuple, 10, pctxFactory.createPropagationContext(1, PropagationContext.Type.DELETION, null, tuple != null ? (TerminalNode) tuple.getTupleSink() : null, null), new RuleTerminalNode(0, new CompositeObjectSinkAdapterTest.MockBetaNode(), context.getRule(), subrule, 0, new BuildContext(kBase)), null);
    final DefaultKnowledgeHelper kbHelper = new DefaultKnowledgeHelper(ksession);
    kbHelper.setActivation(item);
    ((MVELConsequence) context.getRule().getConsequence()).compile((MVELDialectRuntimeData) pkgBuilder.getPackageRegistry(pkg.getName()).getDialectRuntimeRegistry().getDialectData("mvel"));
    context.getRule().getConsequence().evaluate(kbHelper, ksession);
    assertEquals(5, cheddar.getPrice());
}