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

        replaceCallSite(callSite, site);
        return site;
    }


    private static CallSite createCallConstructorSite(CallSite callSite, Class receiver, Object[] args) {
       MetaClass metaClass = InvokerHelper.getMetaClass(receiver);


       CallSite site;
       if (metaClass instanceof MetaClassImpl) {
           site = ((MetaClassImpl)metaClass).createConstructorSite(callSite, args);
       }

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    private static CallSite createCallCurrentSite(CallSite callSite, GroovyObject receiver, Object[] args, Class sender) {
        CallSite site;
        if (receiver instanceof GroovyInterceptable)
          site = new PogoInterceptableSite(callSite);
        else {
            MetaClass metaClass = receiver.getMetaClass();
            if (receiver.getClass() != metaClass.getTheClass() && !metaClass.getTheClass().isInterface()) {
                site = new PogoInterceptableSite(callSite);
            }
            else
                if (metaClass instanceof MetaClassImpl) {
                    site = ((MetaClassImpl)metaClass).createPogoCallCurrentSite(callSite, sender, args);

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    // for MetaClassImpl we try to pick meta method,
    // otherwise or if method doesn't exist we make call via POJO meta class
    private static CallSite createPojoSite(CallSite callSite, Object receiver, Object[] args) {
        final Class klazz = receiver.getClass();
        MetaClass metaClass = InvokerHelper.getMetaClass(receiver);
        if (!GroovyCategorySupport.hasCategoryInCurrentThread() && metaClass instanceof MetaClassImpl) {
            final MetaClassImpl mci = (MetaClassImpl) metaClass;
            final ClassInfo info = mci.getTheCachedClass().classInfo;
            if (info.hasPerInstanceMetaClasses()) {
                return new PerInstancePojoMetaClassSite(callSite, info);

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    private static CallSite createPogoSite(CallSite callSite, Object receiver, Object[] args) {
        if (receiver instanceof GroovyInterceptable)
          return new PogoInterceptableSite(callSite);


        MetaClass metaClass = ((GroovyObject)receiver).getMetaClass();


        if (metaClass instanceof MetaClassImpl) {
            return ((MetaClassImpl)metaClass).createPogoCallSite(callSite, args);
        }

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            excludeParam = file;
        } else if (excludeNameFilter != null) {
            excludeFilterToUse = excludeNameFilter;
            excludeParam = file.getName();
        }
        final MetaClass filterMC = filterToUse == null ? null : InvokerHelper.getMetaClass(filterToUse);
        final MetaClass excludeMC = excludeFilterToUse == null ? null : InvokerHelper.getMetaClass(excludeFilterToUse);
        boolean included = filterToUse == null || DefaultTypeTransformation.castToBoolean(filterMC.invokeMethod(filterToUse, "isCase", filterParam));
        boolean excluded = excludeFilterToUse != null && DefaultTypeTransformation.castToBoolean(excludeMC.invokeMethod(excludeFilterToUse, "isCase", excludeParam));
        return included && !excluded;
    }

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            this.parent().children().add(child);
        }
    }


    protected static void setMetaClass(final MetaClass metaClass, Class nodeClass) {
        final MetaClass newMetaClass = new DelegatingMetaClass(metaClass) {
            @Override
            public Object getAttribute(final Object object, final String attribute) {
                Node n = (Node) object;
                return n.get("@" + attribute);
            }

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        final String typeName = field.getClass().getName();
        throw new RuntimeException(createErrorMessage(className, fieldName, typeName, "constructing"));
    }


    public static void checkPropNames(Object instance, Map<String, Object> args) {
        final MetaClass metaClass = InvokerHelper.getMetaClass(instance);
        for (String k : args.keySet()) {
            if (metaClass.hasProperty(instance, k) == null)
                throw new MissingPropertyException(k, instance.getClass());
        }
    }

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     * @param object - the object to check
     * @param methodName - the name of the method
     * @return true if the object responds to the named method
     */
    public static boolean respondsTo(Object object, String methodName) {
        MetaClass metaClass = DefaultGroovyMethods.getMetaClass(object);
        if (!metaClass.respondsTo(object, methodName).isEmpty()) {
            return true;
        }
        Map properties = DefaultGroovyMethods.getProperties(object);
        return properties.containsKey(methodName);
    }

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

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  public boolean canCreate(IMockConfiguration configuration) {
    return configuration.getImplementation() == MockImplementation.GROOVY;
  }


  public Object create(IMockConfiguration configuration, Specification specification) throws CannotCreateMockException {
    final MetaClass oldMetaClass = GroovyRuntimeUtil.getMetaClass(configuration.getType());
    GroovyMockMetaClass newMetaClass = new GroovyMockMetaClass(configuration, specification, oldMetaClass);
    final Class<?> type = configuration.getType();


    if (configuration.isGlobal()) {
      if (type.isInterface()) {

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