Example usage for org.springframework.web.servlet.support RequestContextUtils getInputFlashMap

Introduction

In this page you can find the example usage for org.springframework.web.servlet.support RequestContextUtils getInputFlashMap.

Prototype

@SuppressWarnings("unchecked")
@Nullable
public static Map<String, ?> getInputFlashMap(HttpServletRequest request) 

Source Link

Document

Return read-only "input" flash attributes from request before redirect.

Usage

From source file:org.kuali.rice.krad.uif.lifecycle.ViewLifecycleRefreshBuild.java

@Override
public void run() {
    View view = ViewLifecycle.getView();
    UifFormBase form = (UifFormBase) ViewLifecycle.getModel();
    HttpServletRequest request = ViewLifecycle.getRequest();

    String flashMapSelectedLineValues = "";
    if (RequestContextUtils.getInputFlashMap(request) != null) {
        flashMapSelectedLineValues = (String) RequestContextUtils.getInputFlashMap(request)
                .get(UifParameters.SELECTED_LINE_VALUES);
    }/*  ww  w.j av  a 2  s.co m*/

    String refreshCallerType = "";
    if (request.getParameterMap().containsKey(KRADConstants.REFRESH_CALLER_TYPE)) {
        refreshCallerType = request.getParameter(KRADConstants.REFRESH_CALLER_TYPE);
    }

    // process multi-value lookup returns
    if (StringUtils.equals(refreshCallerType, UifConstants.RefreshCallerTypes.MULTI_VALUE_LOOKUP)) {
        String lookupCollectionName = "";
        if (request.getParameterMap().containsKey(UifParameters.LOOKUP_COLLECTION_NAME)) {
            lookupCollectionName = request.getParameter(UifParameters.LOOKUP_COLLECTION_NAME);
        }

        String lookupCollectionId = "";
        if (request.getParameterMap().containsKey(UifParameters.LOOKUP_COLLECTION_ID)) {
            lookupCollectionId = request.getParameter(UifParameters.LOOKUP_COLLECTION_ID);
        }

        if (StringUtils.isBlank(lookupCollectionName)) {
            throw new RuntimeException(
                    "Lookup collection name is required for processing multi-value lookup results");
        }

        String multiValueReturnFields = "";
        if (request.getParameterMap().containsKey(UifParameters.MULIT_VALUE_RETURN_FILEDS)) {
            multiValueReturnFields = request.getParameter(UifParameters.MULIT_VALUE_RETURN_FILEDS);
        }

        String selectedLineValues = "";
        if (request.getParameterMap().containsKey(UifParameters.SELECTED_LINE_VALUES)) {
            selectedLineValues = request.getParameter(UifParameters.SELECTED_LINE_VALUES);
        }
        if (!StringUtils.isBlank(flashMapSelectedLineValues)) {
            selectedLineValues = flashMapSelectedLineValues;
        }

        // invoked view helper to populate the collection from lookup results
        ViewLifecycle.getHelper().processMultipleValueLookupResults(form, lookupCollectionId,
                lookupCollectionName, multiValueReturnFields, selectedLineValues);
    }

    // refresh references
    if (request.getParameterMap().containsKey(KRADConstants.REFERENCES_TO_REFRESH)) {
        String referencesToRefresh = request.getParameter(KRADConstants.REFERENCES_TO_REFRESH);

        ViewLifecycle.getHelper().refreshReferences(referencesToRefresh);
    }

    // set focus and jump position for returning from a quickfinder
    // check and invoke callback method
    if (request.getParameterMap().containsKey(UifParameters.QUICKFINDER_ID)) {
        String quickfinderId = request.getParameter(UifParameters.QUICKFINDER_ID);

        String focusId = (String) form.getViewPostMetadata().getComponentPostData(quickfinderId,
                UifConstants.PostMetadata.QUICKFINDER_FOCUS_ID);
        if (StringUtils.isNotBlank(focusId)) {
            form.setFocusId(focusId);
        }

        String jumpToId = (String) form.getViewPostMetadata().getComponentPostData(quickfinderId,
                UifConstants.PostMetadata.QUICKFINDER_JUMP_TO_ID);
        if (StringUtils.isNotBlank(jumpToId)) {
            form.setJumpToId(jumpToId);
        }

        // check for callback method and invoke it if present
        String callbackMethodToCall = (String) form.getViewPostMetadata().getComponentPostData(quickfinderId,
                UifConstants.PostMetadata.QUICKFINDER_CALLBACK_METHOD_TO_CALL);
        MethodInvokerConfig callbackMethod = (MethodInvokerConfig) form.getViewPostMetadata()
                .getComponentPostData(quickfinderId, UifConstants.PostMetadata.QUICKFINDER_CALLBACK_METHOD);

        if (StringUtils.isNotBlank(callbackMethodToCall) || callbackMethod != null) {
            // if the callbackMethod is not set, then we set it
            if (callbackMethod == null) {
                callbackMethod = new MethodInvokerConfig();
            }

            // get additional parameters to be passed to the callback method
            Map<String, String> callbackContext = (Map<String, String>) form.getViewPostMetadata()
                    .getComponentPostData(quickfinderId,
                            UifConstants.PostMetadata.QUICKFINDER_CALLBACK_CONTEXT);

            // if target class or object not set, use view helper service
            if ((callbackMethod.getTargetClass() == null) && (callbackMethod.getTargetObject() == null)) {
                callbackMethod.setTargetObject(ViewLifecycle.getHelper());
            }

            callbackMethod.setTargetMethod(callbackMethodToCall);
            Object[] arguments = new Object[3];
            arguments[0] = form;
            arguments[1] = quickfinderId;
            arguments[2] = callbackContext;
            callbackMethod.setArguments(arguments);

            // invoke callback method
            try {
                callbackMethod.prepare();

                Class<?> methodReturnType = callbackMethod.getPreparedMethod().getReturnType();
                if (StringUtils.equals("void", methodReturnType.getName())) {
                    callbackMethod.invoke();
                } else {
                    // TODO : can the return type be anything else other than void? if so, what?
                }
            } catch (Exception e) {
                throw new RuntimeException("Error invoking callback method for quickfinder: " + quickfinderId,
                        e);
            }
        }
    }

}

---

From source file:org.kuali.rice.krad.web.service.impl.RefreshControllerServiceImpl.java

/**
 * Handles the return from a multi-value lookup, processing any select line values and invoking the
 * configured view helper service to create the lines for those values in the model collection.
 *
 * <p>There are two supported strategies for returning the selected lines. One, if the lookup view
 * and the caller are within the same application container, Springs input flash map is used. If however,
 * the lookup view is outside the caller, then just a standard request parameter is used.</p>
 *
 * @param form form instance containing the model data
 * @param request http request object being handled
 *//* w w w  .  j ava  2 s  .  c o m*/
protected void processMultiValueReturn(final UifFormBase form, HttpServletRequest request) {
    final String lookupCollectionId = request.getParameter(UifParameters.LOOKUP_COLLECTION_ID);

    final String lookupCollectionName = request.getParameter(UifParameters.LOOKUP_COLLECTION_NAME);
    if (StringUtils.isBlank(lookupCollectionName)) {
        throw new RuntimeException(
                "Lookup collection name is required for processing multi-value lookup results");
    }

    final String multiValueReturnFields = request.getParameter(UifParameters.MULIT_VALUE_RETURN_FILEDS);
    String selectedLineValuesParam = request.getParameter(UifParameters.SELECTED_LINE_VALUES);

    String flashMapSelectedLineValues = "";
    if (RequestContextUtils.getInputFlashMap(request) != null) {
        flashMapSelectedLineValues = (String) RequestContextUtils.getInputFlashMap(request)
                .get(UifParameters.SELECTED_LINE_VALUES);
    }

    if (!StringUtils.isBlank(flashMapSelectedLineValues)) {
        selectedLineValuesParam = flashMapSelectedLineValues;
    }

    final String selectedLineValues = selectedLineValuesParam;

    Runnable runnable = new Runnable() {
        @Override
        public void run() {
            // invoked view helper to populate the collection from lookup results
            ViewLifecycle.getHelper().processMultipleValueLookupResults(form, lookupCollectionId,
                    lookupCollectionName, multiValueReturnFields, selectedLineValues);
        }
    };

    ViewLifecycle.encapsulateLifecycle(form.getView(), form, form.getViewPostMetadata(), null, request,
            runnable);
}

---

From source file:sg.ncl.MainController.java

@RequestMapping(value = "/signup2", method = RequestMethod.GET)
public String signup2(Model model, HttpServletRequest request) {
    Map<String, ?> inputFlashMap = RequestContextUtils.getInputFlashMap(request);
    if (inputFlashMap != null) {
        log.debug((String) inputFlashMap.get(MESSAGE));
        model.addAttribute(SIGNUP_MERGED_FORM, (SignUpMergedForm) inputFlashMap.get(SIGNUP_MERGED_FORM));
    } else {//from w  w w . j  a  v  a  2 s .  c  om
        log.debug("InputFlashMap is null");
        model.addAttribute(SIGNUP_MERGED_FORM, new SignUpMergedForm());
    }
    return SIGNUP_PAGE;
}

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