Examples of org.springframework.web.portlet.ModelAndView

org.springframework.web.portlet.ModelAndView
Holder for both Model and View in the web MVC framework. Note that these are entirely distinct. This class merely holds both to make it possible for a controller to return both model and view in a single return value.
Represents a model and view returned by a handler, to be resolved by a DispatcherPortlet. The view can take the form of a String view name which will need to be resolved by a ViewResolver object; alternatively a view object can be specified directly. The model is a Map, allowing the use of multiple objects keyed by name. @author Juergen Hoeller @since 2.0 @see org.springframework.web.portlet.DispatcherPortlet @see org.springframework.web.servlet.ViewResolver @see org.springframework.web.portlet.HandlerAdapter @see org.springframework.web.portlet.mvc.Controller

    
    // build the model
    Map<Object,Object> model = new HashMap<Object,Object>();
    model.put("results", results);
    
    return new ModelAndView(viewName, model);
  }

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  private ModelAndView getModelAndView(Object returnValue) {
    if (returnValue instanceof ModelAndView) {
      return (ModelAndView) returnValue;
    }
    else if (returnValue instanceof Model) {
      return new ModelAndView().addAllObjects(((Model) returnValue).asMap());
    }
    else if (returnValue instanceof Map) {
      return new ModelAndView().addAllObjects((Map) returnValue);
    }
    else if (returnValue instanceof View) {
      return new ModelAndView(returnValue);
    }
    else if (returnValue instanceof String) {
      return new ModelAndView((String) returnValue);
    }
    else if (returnValue == null) {
      return new ModelAndView();
    }
    else {
      throw new IllegalArgumentException("Invalid handler method return value: " + returnValue);
    }
  }

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   * @param ex the exception that got thrown during handler execution
   * @return the ModelAndView instance
   * @see #setExceptionAttribute
   */
  protected ModelAndView getModelAndView(String viewName, Exception ex) {
    ModelAndView mv = new ModelAndView(viewName);
    if (this.exceptionAttribute != null) {
      if (logger.isDebugEnabled()) {
        logger.debug("Exposing Exception as model attribute '" + this.exceptionAttribute + "'");
      }
      mv.addObject(this.exceptionAttribute, ex);
    }
    return mv;
  }

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    if (controlModel != null) {
      model.putAll(controlModel);
    }


    // Trigger rendering of the specified view, using the final model.
    return new ModelAndView(viewName, model);
  }

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    PortletHandlerMethodResolver methodResolver = getMethodResolver(handler);
    Method handlerMethod = methodResolver.resolveHandlerMethod(request);
    PortletHandlerMethodInvoker methodInvoker = new PortletHandlerMethodInvoker(methodResolver);


    Object result = methodInvoker.invokeHandlerMethod(handlerMethod, handler, webRequest, implicitModel);
    ModelAndView mav = methodInvoker.getModelAndView(handlerMethod, handler.getClass(), result, implicitModel,
        webRequest);
    methodInvoker.updateModelAttributes(
        handler, (mav != null ? mav.getModel() : null), implicitModel, webRequest);


    // Expose implicit model for subsequent render phase.
    if (response instanceof StateAwareResponse && !implicitModel.isEmpty()) {
      StateAwareResponse stateResponse = (StateAwareResponse) response;
      Map<?, ?> modelToStore = implicitModel;

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   * @see #setSuccessView
   * @see org.springframework.validation.Errors
   * @see org.springframework.validation.BindException#getModel
   */
  protected ModelAndView onSubmitRender(Object command, BindException errors) throws Exception {
    ModelAndView mv = onSubmitRender(command);
    if (mv != null) {
      // simplest onSubmit version implemented in custom subclass
      return mv;
    }
    else {
      // default behavior: render success view
      if (getSuccessView() == null) {
        throw new PortletException("successView isn't set");
      }
      return new ModelAndView(getSuccessView(), errors.getModel());
    }
  }

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   */
  @Override
  protected ModelAndView handleRenderRequestInternal(RenderRequest request, RenderResponse response)
      throws Exception {


    return new ModelAndView(getViewName());
  }

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        for (ModelAndViewResolver mavResolver : customModelAndViewResolvers) {
          org.springframework.web.servlet.ModelAndView smav =
              mavResolver.resolveModelAndView(handlerMethod, handlerType, returnValue, implicitModel, webRequest);
          if (smav != ModelAndViewResolver.UNRESOLVED) {
            return (smav.isReference() ?
                new ModelAndView(smav.getViewName(), smav.getModelMap()) :
                new ModelAndView(smav.getView(), smav.getModelMap()));
          }
        }
      }


      if (returnValue instanceof ModelAndView) {
        ModelAndView mav = (ModelAndView) returnValue;
        mav.getModelMap().mergeAttributes(implicitModel);
        return mav;
      }
      else if (returnValue instanceof org.springframework.web.servlet.ModelAndView) {
        org.springframework.web.servlet.ModelAndView smav = (org.springframework.web.servlet.ModelAndView) returnValue;
        ModelAndView mav = (smav.isReference() ?
            new ModelAndView(smav.getViewName(), smav.getModelMap()) :
            new ModelAndView(smav.getView(), smav.getModelMap()));
        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(returnValue).addAllObjects(implicitModel);
      }
      else if (handlerMethod.isAnnotationPresent(ModelAttribute.class)) {
        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.
        return null;
      }
      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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   * @param ex the exception that got thrown during handler execution
   * @return the ModelAndView instance
   * @see #setExceptionAttribute
   */
  protected ModelAndView getModelAndView(String viewName, Exception ex) {
    ModelAndView mv = new ModelAndView(viewName);
    if (this.exceptionAttribute != null) {
      if (logger.isDebugEnabled()) {
        logger.debug("Exposing Exception as model attribute '" + this.exceptionAttribute + "'");
      }
      mv.addObject(this.exceptionAttribute, ex);
    }
    return mv;
  }

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    if (controlModel != null) {
      model.putAll(controlModel);
    }


    // Trigger rendering of the specified view, using the final model.
    return new ModelAndView(viewName, model);
  }

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