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

Example 1 with GlobalDescr

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

the class XmlPackageReaderTest method testParseRhs.

@Test
public void testParseRhs() throws Exception {
    final XmlPackageReader xmlPackageReader = getXmReader();
    xmlPackageReader.read(new InputStreamReader(getClass().getResourceAsStream("test_ParseRhs.xml")));
    final PackageDescr packageDescr = xmlPackageReader.getPackageDescr();
    assertNotNull(packageDescr);
    assertEquals("com.sample", packageDescr.getName());
    final List imports = packageDescr.getImports();
    assertEquals(2, imports.size());
    assertEquals("java.util.HashMap", ((ImportDescr) imports.get(0)).getTarget());
    assertEquals("org.drools.mvel.compiler.*", ((ImportDescr) imports.get(1)).getTarget());
    final List globals = packageDescr.getGlobals();
    assertEquals(2, globals.size());
    final GlobalDescr x = (GlobalDescr) globals.get(0);
    final GlobalDescr yada = (GlobalDescr) globals.get(1);
    assertEquals("com.sample.X", x.getType());
    assertEquals("x", x.getIdentifier());
    assertEquals("com.sample.Yada", yada.getType());
    assertEquals("yada", yada.getIdentifier());
    final FunctionDescr functionDescr = (FunctionDescr) packageDescr.getFunctions().get(0);
    final List names = functionDescr.getParameterNames();
    assertEquals("foo", names.get(0));
    assertEquals("bada", names.get(1));
    final List types = functionDescr.getParameterTypes();
    assertEquals("Bar", types.get(0));
    assertEquals("Bing", types.get(1));
    assertEquals("System.out.println(\"hello world\");", functionDescr.getText().trim());
    final RuleDescr ruleDescr = (RuleDescr) packageDescr.getRules().get(0);
    assertEquals("my rule", ruleDescr.getName());
    final String consequence = (String) ruleDescr.getConsequence();
    assertNotNull(consequence);
    assertEquals("System.out.println( \"hello\" );", consequence.trim());
}

Example 2 with GlobalDescr

use of org.drools.drl.ast.descr.GlobalDescr 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 3 with GlobalDescr

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

the class KnowledgeBuilderTest method createPredicateRule.

private void createPredicateRule(final PackageDescr packageDescr, final String expression) {
    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);
    final BindingDescr fieldBindingDescr = new BindingDescr("x", "price");
    pattern.addConstraint(fieldBindingDescr);
    final BindingDescr fieldBindingDescr2 = new BindingDescr("y", "price");
    pattern.addConstraint(fieldBindingDescr2);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    pattern.addConstraint(new ExprConstraintDescr(expression));
    ruleDescr.setConsequence("update(stilton);");
}

Example 4 with GlobalDescr

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

the class KnowledgeBuilderTest method testSerializable.

@Test
public void testSerializable() 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);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    ruleDescr.setConsequence("map.put(\"value\", new Integer(1) );");
    // check that packageDescr is serializable
    final PackageDescr back = (PackageDescr) SerializationHelper.serializeObject(packageDescr);
    assertNotNull(back);
    assertEquals("p1", back.getName());
    builder.addPackage(packageDescr);
    InternalKnowledgePackage pkg = builder.getPackage(packageDescr.getName());
    final RuleImpl rule = pkg.getRule("rule-1");
    assertLength(0, builder.getErrors().getErrors());
    InternalKnowledgePackage newPkg = SerializationHelper.serializeObject(pkg);
    final RuleImpl newRule = newPkg.getRule("rule-1");
    InternalKnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase();
    ;
    // It's been serialised so we have to simulate the re-wiring process
    newPkg.getDialectRuntimeRegistry().onAdd(kBase.getRootClassLoader());
    newPkg.getDialectRuntimeRegistry().onBeforeExecute();
    kBase.getGlobals().put("map", Map.class);
    final KieSession workingMemory = kBase.newKieSession();
    final HashMap map = new HashMap();
    workingMemory.setGlobal("map", map);
    final LeftTupleImpl tuple = new MockTuple(new HashMap());
    tuple.setLeftTupleSink(new RuleTerminalNode(1, new MockBetaNode(), newRule, newRule.getLhs(), 0, new BuildContext(kBase, Collections.emptyList())));
    final Activation activation = new MockActivation(newRule, 0, newRule.getLhs(), tuple);
    final DefaultKnowledgeHelper knowledgeHelper = new DefaultKnowledgeHelper(((StatefulKnowledgeSessionImpl) workingMemory));
    knowledgeHelper.setActivation(activation);
    newRule.getConsequence().evaluate(knowledgeHelper, ((StatefulKnowledgeSessionImpl) workingMemory));
    assertEquals(new Integer(1), map.get("value"));
}

Example 5 with GlobalDescr

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

the class KnowledgeBuilderTest method createEvalRule.

private void createEvalRule(final PackageDescr packageDescr, final String expression) {
    final RuleDescr ruleDescr = new RuleDescr("rule-1");
    packageDescr.addRule(ruleDescr);
    final AndDescr lhs = new AndDescr();
    ruleDescr.setLhs(lhs);
    packageDescr.addGlobal(new GlobalDescr("map", "java.util.Map"));
    final EvalDescr evalDescr = new EvalDescr(expression);
    lhs.addDescr(evalDescr);
    ruleDescr.setConsequence("");
}