Example usage for org.springframework.web.servlet.mvc.annotation ModelAndViewResolver UNRESOLVED

Introduction

In this page you can find the example usage for org.springframework.web.servlet.mvc.annotation ModelAndViewResolver UNRESOLVED.

Prototype

ModelAndView UNRESOLVED

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Document

Marker to be returned when the resolver does not know how to handle the given method parameter.

Usage

From source file:com.revolsys.ui.web.rest.interceptor.WebAnnotationMethodHandlerAdapter.java

@SuppressWarnings({ "unchecked", "rawtypes" })
public ModelAndView getModelAndView(final Method handlerMethod, final Class<?> handlerType,
        final Object returnValue, final ExtendedModelMap implicitModel, final ServletWebRequest webRequest)
        throws Exception {
    boolean responseArgumentUsed = false;
    final ResponseStatus responseStatusAnn = AnnotationUtils.findAnnotation(handlerMethod,
            ResponseStatus.class);
    if (responseStatusAnn != null) {
        final HttpStatus responseStatus = responseStatusAnn.value();
        // to be picked up by the RedirectView
        webRequest.getRequest().setAttribute(View.RESPONSE_STATUS_ATTRIBUTE, responseStatus);
        webRequest.getResponse().setStatus(responseStatus.value());
        responseArgumentUsed = true;/*from   w ww . java 2  s .co m*/
    }

    // Invoke custom resolvers if present...
    if (WebAnnotationMethodHandlerAdapter.this.customModelAndViewResolvers != null) {
        for (final ModelAndViewResolver mavResolver : WebAnnotationMethodHandlerAdapter.this.customModelAndViewResolvers) {
            final ModelAndView mav = mavResolver.resolveModelAndView(handlerMethod, handlerType, returnValue,
                    implicitModel, webRequest);
            if (mav != ModelAndViewResolver.UNRESOLVED) {
                return mav;
            }
        }
    }

    if (returnValue != null && AnnotationUtils.findAnnotation(handlerMethod, ResponseBody.class) != null) {
        final View view = handleResponseBody(returnValue, webRequest);
        return new ModelAndView(view).addAllObjects(implicitModel);
    }

    if (returnValue instanceof ModelAndView) {
        final ModelAndView mav = (ModelAndView) returnValue;
        mav.getModelMap().mergeAttributes(implicitModel);
        return mav;
    } else if (returnValue instanceof Model) {
        return new ModelAndView().addAllObjects(implicitModel).addAllObjects(((Model) returnValue).asMap());
    } else if (returnValue instanceof View) {
        return new ModelAndView((View) returnValue).addAllObjects(implicitModel);
    } else if (AnnotationUtils.findAnnotation(handlerMethod, ModelAttribute.class) != null) {
        addReturnValueAsModelAttribute(handlerMethod, handlerType, returnValue, implicitModel);
        return new ModelAndView().addAllObjects(implicitModel);
    } else if (returnValue instanceof Map) {
        return new ModelAndView().addAllObjects(implicitModel).addAllObjects((Map) returnValue);
    } else if (returnValue instanceof String) {
        return new ModelAndView((String) returnValue).addAllObjects(implicitModel);
    } else if (returnValue == null) {
        // Either returned null or was 'void' return.
        if (responseArgumentUsed || webRequest.isNotModified()) {
            return null;
        } else {
            // Assuming view name translation...
            return new ModelAndView().addAllObjects(implicitModel);
        }
    } else if (!BeanUtils.isSimpleProperty(returnValue.getClass())) {
        // Assume a single model attribute...
        addReturnValueAsModelAttribute(handlerMethod, handlerType, returnValue, implicitModel);
        return new ModelAndView().addAllObjects(implicitModel);
    } else {
        throw new IllegalArgumentException("Invalid handler method return value: " + returnValue);
    }
}

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