Examples of groovy.lang.MetaClass

groovy.lang.MetaClass
A MetaClass within Groovy defines the behaviour of any given Groovy or Java class. The MetaClass interface defines two parts. The client API, which is defined via the extend MetaObjectProtocol interface and the contract with the Groovy runtime system. In general the compiler and Groovy runtime engine interact with methods on this class whilst MetaClass clients interact with the method defined by the MetaObjectProtocol interface @see MetaClassImpl @see groovy.lang.MetaObjectProtocol @author John Wilson @author Graeme Rocher

    public static MetaClass getExpandoMetaClass(Class clazz) {
        MetaClassRegistry registry = GroovySystem.getMetaClassRegistry();
        Assert.isTrue(registry.getMetaClassCreationHandler() instanceof ExpandoMetaClassCreationHandle,
                "Grails requires an instance of [ExpandoMetaClassCreationHandle] to be set in Groovy's MetaClassRegistry! (current is : "+registry.getMetaClassCreationHandler()+")");


        MetaClass mc = registry.getMetaClass(clazz);
        AdaptingMetaClass adapter = null;
        if (mc instanceof AdaptingMetaClass) {
            adapter = (AdaptingMetaClass) mc;
            mc = ((AdaptingMetaClass)mc).getAdaptee();
        }

View Full Code Here

     * @param target The target
     * @param obj The property value
     * @return The property name or null
     */
    public static String findPropertyNameForValue(Object target, Object obj) {
        MetaClass mc = GroovySystem.getMetaClassRegistry().getMetaClass(target.getClass());
        List<MetaProperty> metaProperties = mc.getProperties();
        for (MetaProperty metaProperty : metaProperties) {
            if (isAssignableOrConvertibleFrom(metaProperty.getType(), obj.getClass())) {
                Object val = metaProperty.getProperty(target);
                if (val != null && val.equals(obj)) {
                    return metaProperty.getName();

View Full Code Here

                String name = m.getName();
                closures.put(name, new MethodClosure(scriptObject, name));
            }


            globalClosures.putAll(closures);
            final MetaClass oldMetaClass = scriptObject.getMetaClass();
            scriptObject.setMetaClass(new DelegatingMetaClass(oldMetaClass) {
                public Object invokeMethod(Object object, String name, Object args) {
                    if (args == null) {
                        return invokeMethod(object, name, MetaClassHelper.EMPTY_ARRAY);
                    } else if (args instanceof Tuple) {

View Full Code Here

    protected void handleTimeout() {
        callDynamic("onTimeout", EMPTY_ARGUMENTS);
    }


    private boolean callDynamic(final String method, final Object[] args) {
        final MetaClass metaClass = InvokerHelper.getMetaClass(this);
        final List<MetaMethod> list = metaClass.respondsTo(this, method);
        if (list != null && !list.isEmpty()) {
            boolean hasArgs = false;
            for (final MetaMethod metaMethod : list) {
                if (metaMethod.getParameterTypes().length > 0) hasArgs = true;
            }

View Full Code Here

            if (objects[i] != null) {
                types[i] = objects[i].getClass();
            }
        }


        MetaClass metaclass = InvokerHelper.getMetaClass(self);


        MetaMethod mm = metaclass.pickMethod(name, types);


        // try some simple transformations
        // transform a trailing closure to a function
        if (mm == null && objects.length > 0) {
            Object lastArg = objects[objects.length - 1];
            if (lastArg instanceof Closure) {
                Class<?>[] at2 = Arrays.copyOf(types, types.length);
                at2[objects.length - 1] = Function.class;
                mm = metaclass.pickMethod(name, at2);
                if (mm != null) {
                    objects[objects.length - 1] =  new ClosureFunction((Closure) lastArg);
                }
            }
        }




        // try instantiating a single class
        if (mm == null && objects.length == 1 && objects[0] instanceof Class) {
            final Class<?> cls = (Class) objects[0];
            Class[] at2 = {cls};
            final MetaMethod method = metaclass.pickMethod(name, at2);


            if (method != null) {
                try {
                    final Constructor ctor = cls.getConstructor();
                    return new Supplier<Object>() {

View Full Code Here

     * @param args The arguments.
     * @return The constructed and configured object.
     */
    private <T> T constructAndConfigure(Class<T> type, Object[] args) throws NoSuchMethodException {
        Pair<Object[], Closure> split = splitClosure(args);
        MetaClass metaclass = InvokerHelper.getMetaClass(type);


        Object obj;
        try {
            obj = metaclass.invokeConstructor(split.getLeft());
        } catch (GroovyRuntimeException e) {
            Throwables.propagateIfInstanceOf(e.getCause(), NoSuchMethodException.class);
            throw e;
        }


        metaclass = InvokerHelper.getMetaClass(obj);


        MetaMethod mm = metaclass.getMetaMethod("setEvalConfig", new Class[]{EvalConfig.class});
        if (mm != null) {
            mm.invoke(obj, new Object[]{project.getConfig()});
        }


        mm = metaclass.getMetaMethod("setEvalProject", new Class[]{EvalProject.class});
        if (mm == null) {
            mm = metaclass.getMetaMethod("setProject", new Class[]{EvalProject.class});
        }
        if (mm != null) {
            mm.invoke(obj, new Object[]{project});
        }

View Full Code Here

      return invokeBeanDefiningMethod(name, args);
    }
    else if (args.length > 1 && args[args.length -1] instanceof Closure) {
      return invokeBeanDefiningMethod(name, args);
    }
    MetaClass mc = DefaultGroovyMethods.getMetaClass(getRegistry());
    if (!mc.respondsTo(getRegistry(), name, args).isEmpty()){
      return mc.invokeMethod(getRegistry(), name, args);
    }
    return this;
  }

View Full Code Here


        GroovyObject object = (GroovyObject) groovyClass.newInstance();


        assertTrue(object != null);


        MetaClass metaClass = object.getMetaClass();
        System.out.println("Metaclass: " + metaClass);


        Class type = object.getClass();
        System.out.println("Type: " + type);


        // invoke via metaclass
        metaClass.invokeMethod(object, "main", null);


        // invoke directly
        object.invokeMethod("main", null);
    }

View Full Code Here


public class JO {
    public static SoftReference staticMetaClass;


    MetaClass getStaticMetaClass (Object obj) {
        MetaClass mc;
        if (staticMetaClass == null || (mc = (MetaClass) staticMetaClass.get()) == null ) {
            mc = InvokerHelper.getMetaClass(obj);
            staticMetaClass = new SoftReference(mc);
        }
        return mc;

View Full Code Here

     * Get info about instance and class Methods that are dynamically added through Groovy.
     *
     * @return Array of StringArrays that can be indexed with the MEMBER_xxx_IDX constants
     */
    public Object[] getMetaMethods() {
        MetaClass metaClass = InvokerHelper.getMetaClass(objectUnderInspection);
        List metaMethods = metaClass.getMetaMethods();
        Object[] result = new Object[metaMethods.size()];
        int i = 0;
        for (Iterator iter = metaMethods.iterator(); iter.hasNext(); i++) {
            MetaMethod metaMethod = (MetaMethod) iter.next();
            result[i] = methodInfo(metaMethod);

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of groovy.lang.MetaClass

com.baulsupp.kolja.ansi.reports.groovy.GroovyReportFactory

com.tinkerpop.gremlin.groovy.jsr223.GremlinGroovyScriptEngine

geb.transform.implicitassertions.Runtime

grails.build.support.MetaClassRegistryCleaner

grails.spring.BeanBuilder

grails.util.GrailsClassUtils

grails.util.GrailsMetaClassUtils

grails.web.databinding.DataBindingUtils

Groovy

groovy.inspect.Inspector

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.