Examples with PatternDescr org.drools.drl.ast.descr.PatternDescr used on opensource projects

Example 21 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testTypeDeclarationWithFieldMetadata.

@Test
public void testTypeDeclarationWithFieldMetadata() throws Exception {
    PackageDescr pkgDescr = new PackageDescr("org.drools.mvel.compiler.test");
    TypeDeclarationDescr typeDescr = new TypeDeclarationDescr("TypeWithFieldMeta");
    TypeFieldDescr f1 = new TypeFieldDescr("field", new PatternDescr("String"));
    f1.addAnnotation("custom", null);
    typeDescr.addField(f1);
    pkgDescr.addTypeDeclaration(typeDescr);
    KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    builder.addPackage(pkgDescr);
    assertFalse(builder.hasErrors());
    InternalKnowledgePackage bp = builder.getPackage(pkgDescr.getName());
    final FactType factType = bp.getFactType("org.drools.mvel.compiler.test.TypeWithFieldMeta");
    assertNotNull(factType);
    final FactField field = factType.getField("field");
    assertNotNull(field);
    final Map<String, Object> fieldMetaData = field.getMetaData();
    assertNotNull("No field-level custom metadata got compiled", fieldMetaData);
    assertTrue("Field metadata does not include expected value", fieldMetaData.containsKey("custom"));
}

Example 22 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testEval.

@Test
public void testEval() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Cheese.class.getName(), "stilton");
    lhs.addDescr(pattern);
    BindingDescr fieldBindingDescr = new BindingDescr("x", "price");
    pattern.addConstraint(fieldBindingDescr);
    fieldBindingDescr = new BindingDescr("y", "price");
    pattern.addConstraint(fieldBindingDescr);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    final EvalDescr evalDescr = new EvalDescr("( ( Integer )map.get( new Integer(x) ) ).intValue() == y");
    lhs.addDescr(evalDescr);
    ruleDescr.setConsequence("update(stilton);");
    builder.addPackage(packageDescr);
    assertLength(0, builder.getErrors().getErrors());
    InternalKnowledgePackage pkg = builder.getPackage(packageDescr.getName());
    final RuleImpl rule = pkg.getRule("rule-1");
    final EvalCondition eval = (EvalCondition) rule.getLhs().getChildren().get(1);
    final CompiledInvoker invoker = (CompiledInvoker) eval.getEvalExpression();
    String s = invoker.getMethodBytecode();
}

Example 23 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method createBasicPackageWithOneRule.

private PackageDescr createBasicPackageWithOneRule(int line, int col) {
    PackageDescr packageDescr = new PackageDescr("p1");
    RuleDescr ruleDescr = new RuleDescr("rule-1");
    ruleDescr.setLocation(line, col);
    packageDescr.addRule(ruleDescr);
    AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    PatternDescr patternDescr = new PatternDescr(Cheese.class.getName(), "stilton");
    FieldConstraintDescr literalDescr = new FieldConstraintDescr("type");
    literalDescr.addRestriction(new LiteralRestrictionDescr("==", null));
    patternDescr.addConstraint(literalDescr);
    ruleDescr.setConsequence("");
    return packageDescr;
}

Example 24 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testLiteral.

@Test
public void testLiteral() throws Exception {
    final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    final PackageDescr packageDescr = new PackageDescr("p1");
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    final PatternDescr pattern = new PatternDescr(Cheese.class.getName(), "stilton");
    lhs.addDescr(pattern);
    pattern.addConstraint(new ExprConstraintDescr("type == 'stilton'"));
    ruleDescr.setConsequence("update(stilton);");
    builder.addPackage(packageDescr);
    assertLength(0, builder.getErrors().getErrors());
}

Example 25 with PatternDescr

use of org.drools.drl.ast.descr.PatternDescr in project drools by kiegroup.

the class KnowledgeBuilderTest method testTypeDeclarationNewBean.

@Test
public void testTypeDeclarationNewBean() throws Exception {
    PackageDescr pkgDescr = new PackageDescr("org.drools.mvel.compiler.test");
    TypeDeclarationDescr typeDescr = new TypeDeclarationDescr("NewBean");
    TypeFieldDescr f1 = new TypeFieldDescr("name", new PatternDescr("String"));
    TypeFieldDescr f2 = new TypeFieldDescr("age", new PatternDescr("int"));
    typeDescr.addField(f1);
    typeDescr.addField(f2);
    pkgDescr.addTypeDeclaration(typeDescr);
    KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();
    builder.addPackage(pkgDescr);
    InternalKnowledgePackage pkg = builder.getPackage(pkgDescr.getName());
    assertEquals(1, pkg.getTypeDeclarations().size());
    TypeDeclaration type = pkg.getTypeDeclaration("NewBean");
    assertEquals("NewBean", type.getTypeName());
    assertEquals(Role.Type.FACT, type.getRole());
    assertEquals("org.drools.mvel.compiler.test.NewBean", type.getTypeClass().getName());
    assertFalse(builder.hasErrors());
    InternalKnowledgePackage bp = builder.getPackage(pkgDescr.getName());
    Class newBean = bp.getPackageClassLoader().loadClass("org.drools.mvel.compiler.test.NewBean");
    assertNotNull(newBean);
}