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

Example 11 with MVELDialectRuntimeData

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

the class MVELSalienceBuilder method build.

public void build(RuleBuildContext context) {
    boolean typesafe = context.isTypesafe();
    // pushing consequence LHS into the stack for variable resolution
    context.getDeclarationResolver().pushOnBuildStack(context.getRule().getLhs());
    try {
        // This builder is re-usable in other dialects, so specify by name
        MVELDialect dialect = (MVELDialect) context.getDialect("mvel");
        Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
        MVELAnalysisResult analysis = (MVELAnalysisResult) dialect.analyzeExpression(context, context.getRuleDescr(), context.getRuleDescr().getSalience(), new BoundIdentifiers(DeclarationScopeResolver.getDeclarationClasses(decls), context));
        context.setTypesafe(analysis.isTypesafe());
        final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
        int i = usedIdentifiers.getDeclrClasses().keySet().size();
        Declaration[] previousDeclarations = new Declaration[i];
        i = 0;
        for (String id : usedIdentifiers.getDeclrClasses().keySet()) {
            previousDeclarations[i++] = decls.get(id);
        }
        Arrays.sort(previousDeclarations, SortDeclarations.instance);
        MVELCompilationUnit unit = dialect.getMVELCompilationUnit(context.getRuleDescr().getSalience(), analysis, previousDeclarations, null, null, context, "drools", KnowledgeHelper.class, false, MVELCompilationUnit.Scope.EXPRESSION);
        MVELSalienceExpression expr = new MVELSalienceExpression(unit, dialect.getId());
        context.getRule().setSalience(KiePolicyHelper.isPolicyEnabled() ? new SafeSalience(expr) : expr);
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
        data.addCompileable(context.getRule(), expr);
        expr.compile(data, context.getRule());
    } catch (final Exception e) {
        copyErrorLocation(e, context.getRuleDescr());
        context.addError(new DescrBuildError(context.getParentDescr(), context.getRuleDescr(), null, "Unable to build expression for 'salience' : " + e.getMessage() + "'" + context.getRuleDescr().getSalience() + "'"));
    } finally {
        context.setTypesafe(typesafe);
    }
}

Example 12 with MVELDialectRuntimeData

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

the class MVELClassFieldExtractorTest method setUp.

@Before
public void setUp() throws Exception {
    store.setClassFieldAccessorCache(new ClassFieldAccessorCache(Thread.currentThread().getContextClassLoader()));
    store.setEagerWire(true);
    extractor = (MVELObjectClassFieldReader) store.getMVELReader(Person.class.getPackage().getName(), Person.class.getName(), "addresses['home'].street", true, String.class);
    MVELDialectRuntimeData data = new MVELDialectRuntimeData();
    data.addImport(Person.class.getSimpleName(), Person.class);
    data.onAdd(null, ProjectClassLoader.createProjectClassLoader());
    extractor.compile(data);
    person[0] = new Person("bob", 30);
    business[0] = new Address("Business Street", "999", null);
    home[0] = new Address("Home Street", "555", "55555555");
    person[0].getAddresses().put("business", business[0]);
    person[0].getAddresses().put("home", home[0]);
    person[1] = new Person("mark", 35);
    business[1] = new Address("Another Business Street", "999", null);
    home[1] = new Address("Another Home Street", "555", "55555555");
    person[1].getAddresses().put("business", business[1]);
    person[1].getAddresses().put("home", home[1]);
}

Example 13 with MVELDialectRuntimeData

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

the class MvelConstraint method createMvelConditionEvaluator.

protected ConditionEvaluator createMvelConditionEvaluator(InternalWorkingMemory workingMemory) {
    if (compilationUnit != null) {
        MVELDialectRuntimeData data = getMVELDialectRuntimeData(workingMemory);
        ExecutableStatement statement = (ExecutableStatement) compilationUnit.getCompiledExpression(data, evaluationContext);
        ParserConfiguration configuration = statement instanceof CompiledExpression ? ((CompiledExpression) statement).getParserConfiguration() : data.getParserConfiguration();
        return new MvelConditionEvaluator(compilationUnit, configuration, statement, declarations, operators, getAccessedClass());
    } else {
        return new MvelConditionEvaluator(getParserConfiguration(workingMemory), expression, declarations, operators, getAccessedClass());
    }
}

Example 14 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project jbpm by kiegroup.

the class MVELDecisionBuilderTest method testSimpleAction.

@Test
public void testSimpleAction() throws Exception {
    final InternalKnowledgePackage pkg = new KnowledgePackageImpl("pkg1");
    ActionDescr actionDescr = new ActionDescr();
    actionDescr.setText("list.add( 'hello world' )");
    KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl(pkg);
    PackageRegistry pkgReg = pkgBuilder.getPackageRegistry(pkg.getName());
    MVELDialect mvelDialect = (MVELDialect) pkgReg.getDialectCompiletimeRegistry().getDialect("mvel");
    PackageBuildContext context = new PackageBuildContext();
    context.init(pkgBuilder, pkg, null, pkgReg.getDialectCompiletimeRegistry(), mvelDialect, null);
    pkgBuilder.addPackageFromDrl(new StringReader("package pkg1;\nglobal java.util.List list;\n"));
    ActionNode actionNode = new ActionNode();
    DroolsAction action = new DroolsConsequenceAction("java", null);
    actionNode.setAction(action);
    final MVELActionBuilder builder = new MVELActionBuilder();
    builder.build(context, action, actionDescr, actionNode);
    final InternalKnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addPackages(Arrays.asList(pkgBuilder.getPackages()));
    final KieSession wm = kbase.newKieSession();
    List<String> list = new ArrayList<String>();
    wm.setGlobal("list", list);
    MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkgBuilder.getPackage("pkg1").getDialectRuntimeRegistry().getDialectData("mvel");
    ProcessContext processContext = new ProcessContext(((InternalWorkingMemory) wm).getKnowledgeRuntime());
    ((MVELAction) actionNode.getAction().getMetaData("Action")).compile(data);
    ((Action) actionNode.getAction().getMetaData("Action")).execute(processContext);
    assertEquals("hello world", list.get(0));
}

Example 15 with MVELDialectRuntimeData

use of org.drools.core.rule.MVELDialectRuntimeData in project jbpm by kiegroup.

the class MVELReturnValueConstraintEvaluatorBuilderTest method testSimpleReturnValueConstraintEvaluator.

@Test
public void testSimpleReturnValueConstraintEvaluator() throws Exception {
    final InternalKnowledgePackage pkg = new KnowledgePackageImpl("pkg1");
    ReturnValueDescr descr = new ReturnValueDescr();
    descr.setText("return value");
    KnowledgeBuilderImpl pkgBuilder = new KnowledgeBuilderImpl(pkg);
    DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry(pkg.getName()).getDialectCompiletimeRegistry();
    MVELDialect mvelDialect = (MVELDialect) dialectRegistry.getDialect("mvel");
    PackageBuildContext context = new PackageBuildContext();
    context.init(pkgBuilder, pkg, null, dialectRegistry, mvelDialect, null);
    pkgBuilder.addPackageFromDrl(new StringReader("package pkg1;\nglobal Boolean value;"));
    ReturnValueConstraintEvaluator node = new ReturnValueConstraintEvaluator();
    final MVELReturnValueEvaluatorBuilder builder = new MVELReturnValueEvaluatorBuilder();
    builder.build(context, node, descr, null);
    final InternalKnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addPackages(Arrays.asList(pkgBuilder.getPackages()));
    final KieSession ksession = kbase.newKieSession();
    ksession.setGlobal("value", true);
    RuleFlowProcessInstance processInstance = new RuleFlowProcessInstance();
    processInstance.setKnowledgeRuntime((InternalKnowledgeRuntime) ksession);
    SplitInstance splitInstance = new SplitInstance();
    splitInstance.setProcessInstance(processInstance);
    MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkgBuilder.getPackage("pkg1").getDialectRuntimeRegistry().getDialectData("mvel");
    ((MVELReturnValueEvaluator) node.getReturnValueEvaluator()).compile(data);
    assertTrue(node.evaluate(splitInstance, null, null));
    ksession.setGlobal("value", false);
    assertFalse(node.evaluate(splitInstance, null, null));
}