Examples of org.apache.tapestry.services.ComponentConstructor

org.apache.tapestry.services.ComponentConstructor
Starting with 4.0, copmonents do not always have a zero-args constructor; the enhanced subclass may take some parameters used to initialize instance variables. This interface represents a wrapper around a constructor and an array of parameters that can be used to stamp out new instances of a component. @author Howard M. Lewis Ship @since 4.0


    public void testComponentConstructorFailure()
    {
        Location l = newLocation();


        ComponentConstructor cc = new ComponentConstructorImpl(BaseComponent.class
                .getConstructors()[0], new Object[]
        { "unexpected" }, "<classfab>", l);


        try
        {
            cc.newInstance();
            unreachable();
        }
        catch (ApplicationRuntimeException ex)
        {
            assertExceptionSubstring(

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    }


    public ComponentConstructor getComponentConstructor(IComponentSpecification specification,
            String className)
    {
        ComponentConstructor result = (ComponentConstructor) _cachedConstructors.get(specification);


        if (result == null)
        {
            Class baseClass = _classResolver.findClass(className);


            EnhancementOperationImpl eo = new EnhancementOperationImpl(_classResolver,
                    specification, baseClass, _classFactory, _log);


            // Invoking on the chain is the same as invoking on every
            // object in the chain (because method performEnhancement() is type void).


            _chain.performEnhancement(eo, specification);


            result = eo.getConstructor();


            // TODO: This should be optional to work around that IBM JVM bug.
            // Also, to some degree, it should be passed into EnhancementOperationImpl,
            // as it generally only needs to be done if a enhanced class
            // is fabricated.


            _validator.validate(baseClass, result.getComponentClass(), specification);


            _cachedConstructors.put(specification, result);
        }


        return result;

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            if (IPage.class.isAssignableFrom(componentClass))
                throw new ApplicationRuntimeException(PageloadMessages.pageNotAllowed(id),
                        container, spec.getLocation(), null);
        }


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        IComponent result = (IComponent) cc.newInstance();


        result.setNamespace(namespace);
        result.setPage(page);
        result.setContainer(container);
        result.setId(id);

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            throw new ApplicationRuntimeException(PageloadMessages.classNotPage(pageClass),
                    location, null);


        String pageName = namespace.constructQualifiedName(name);


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        IPage result = (IPage) cc.newInstance();


        result.setNamespace(namespace);
        result.setPageName(pageName);
        result.setPage(result);
        result.setLocale(_locale);

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            if (IPage.class.isAssignableFrom(componentClass))
                throw new ApplicationRuntimeException(PageloadMessages.pageNotAllowed(id),
                        container, spec.getLocation(), null);
        }


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        IComponent result = (IComponent) cc.newInstance();


        result.setNamespace(namespace);
        result.setPage(page);
        result.setContainer(container);
        result.setId(id);

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            throw new ApplicationRuntimeException(PageloadMessages.classNotPage(pageClass),
                    location, null);


        String pageName = namespace.constructQualifiedName(name);


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        IPage result = (IPage) cc.newInstance();


        result.setNamespace(namespace);
        result.setPageName(pageName);
        result.setPage(result);
        result.setLocale(_locale);

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        Method method = findMethod(baseClass, methodName);


        new MessageAnnotationWorker().performEnhancement(op, spec, method, null);


        ComponentConstructor cc = op.getConstructor();


        return cc.newInstance();
    }

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            if (IPage.class.isAssignableFrom(componentClass))
                throw new ApplicationRuntimeException(PageloadMessages.pageNotAllowed(id),
                        container, spec.getLocation(), null);
        }


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        IComponent result = (IComponent) cc.newInstance();


        result.setNamespace(namespace);
        result.setPage(page);
        result.setContainer(container);
        result.setId(id);

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            throw new ApplicationRuntimeException(PageloadMessages.classNotPage(pageClass),
                    location, null);


        String pageName = namespace.constructQualifiedName(name);


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        IPage result = (IPage) cc.newInstance();


        result.setNamespace(namespace);
        result.setPageName(pageName);
        result.setPage(result);
        result.setLocale(_locale);

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        String className = spec.getComponentClassName();


        if (HiveMind.isBlank(className))
            className = BaseComponent.class.getName();


        ComponentConstructor cc = _componentConstructorFactory.getComponentConstructor(
                spec,
                className);


        try
        {
            result = (IComponent) cc.newInstance();


        }
        catch (ClassCastException ex)
        {
            throw new ApplicationRuntimeException(PageloadMessages.classNotComponent(cc
                    .getComponentClass()), container, spec.getLocation(), ex);
        }


        if (result instanceof IPage)
            throw new ApplicationRuntimeException(PageloadMessages.pageNotAllowed(result), result,

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Related Classes of org.apache.tapestry.services.ComponentConstructor

org.apache.tapestry.annotations.TestMessageAnnotationWorker

org.apache.tapestry.enhance.TestEnhancementOperation

org.apache.tapestry.pageload.PageLoader

org.apache.tapestry.services.impl.ComponentConstructorFactoryImpl

org.apache.tapestry.test.Creator

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