hirondelle.fish.exercise.fileupload
Class ImageUploadAction

Object
  ActionImpl
      ActionTemplateShowAndApply
          hirondelle.fish.exercise.fileupload.ImageUploadAction

All Implemented Interfaces:

Action

public final class ImageUploadAction
extends ActionTemplateShowAndApply

Overwrite the image used on the home page.

This is an example of uploading a file, validating it, and saving it to the file system.

See Image for details regarding validation.

Field Summary

static SqlId	ADD_IMAGE
static RequestParameter	DESCRIPTION This 'regular' param will have its value checked by ApplicationFirewallImpl in the usual way.
static RequestParameter	IMAGE_FILE This file upload param will not have its value checked as would a regular param.
static SqlId	LIST_IMAGES

Fields inherited from class ActionTemplateShowAndApply

SUPPORTED_OPERATION

Fields inherited from class ActionImpl

DATA, ERRORS, ITEM_FOR_EDIT, ITEMS_FOR_LISTING, MESSAGES, USER_ID

Constructor Summary

ImageUploadAction(RequestParser aRequestParser)
Constructor

Method Summary

protected void	apply() If user input is valid, overwrite the image file used on the home page; save it to the database as well.
protected void	show() Show a blank form.
protected void	validateUserInput() Ensure user input can create an Image object.

Methods inherited from class ActionTemplateShowAndApply

execute

Methods inherited from class ActionImpl

addError, addError, addError, addMessage, addMessage, addToRequest, addToSession, copyFromSessionToRequest, createSessionAndCsrfToken, endSession, getErrors, getExistingSession, getFromSession, getIdParam, getIdParams, getLocale, getLoggedInUserName, getMessages, getOperation, getOrderBy, getParam, getParamUnsafe, getRequestParser, getResponsePage, getTimeZone, getUserId, hasErrors, removeFromSession, setResponsePage

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DESCRIPTION

public static final RequestParameter DESCRIPTION

This 'regular' param will have its value checked by ApplicationFirewallImpl in the usual way.

IMAGE_FILE

public static final RequestParameter IMAGE_FILE

This file upload param will not have its value checked as would a regular param.

ADD_IMAGE

public static final SqlId ADD_IMAGE

LIST_IMAGES

public static final SqlId LIST_IMAGES

Constructor Detail

ImageUploadAction

public ImageUploadAction(RequestParser aRequestParser)

Constructor

Method Detail

show

protected void show()
             throws AppException

Show a blank form.

Specified by:

show in class ActionTemplateShowAndApply

Throws:

AppException

validateUserInput

protected void validateUserInput()
                          throws AppException

Ensure user input can create an Image object.

Specified by:

validateUserInput in class ActionTemplateShowAndApply

Throws:

AppException

apply

protected void apply()
              throws AppException

If user input is valid, overwrite the image file used on the home page; save it to the database as well.

Specified by:

apply in class ActionTemplateShowAndApply

Throws:

AppException