[jboss-user] [JBoss Seam] - Re: Validate fileUpload

[mustaghattack]

I've submitted a patch for UIFileUpload.
http://jira.jboss.com/jira/browse/JBSEAM-1981

With this patch you can use the hibernate validator framework.
For example I've done an Image annotation which check if a byte[] can be read by ImageIO.


  | @ValidatorClass(ImageValidator.class)
  | @Target({ElementType.FIELD, ElementType.METHOD})
  | @Retention(RetentionPolicy.RUNTIME)
  | @Documented
  | public @interface Image {
  |     String message() default "not a valid image";
  | }     
  | 


  | public class ImageValidator implements Validator<Image> {
  |     
  |     public void initialize(Image parameters) {
  |     }
  | 
  |     public boolean isValid(Object value) {
  |     	if( value == null ) return true;
  |     	if( ! (value instanceof byte[]) ) return false;
  |     	
  |     	byte[] data = (byte[])value;
  |     	
  |     	try {
  | 			BufferedImage img = 
  | 				ImageIO.read( new ByteArrayInputStream( data ) );
  | 
  | 			return img == null ? false : true;
  | 		} catch (IOException e) {
  | 			return false;
  | 		}
  |     }
  | }
  | 

So you can use it in your Entity 

  | @Entity
  | public class AnEntity {
  | 	@Lob
  | 	@Image
  | 	private byte[] data;
  | 
  |    ...
  | }
  | 

In the Facelets :

  | <s:fileUpload id="uplEditedImage" value="#{image.data}"/>
  | 

About my last post, I'm not quite right :) file upload occur during the apply request value phase but the submittedValue attribute wasn't set and the ModelValidator need a "value" attribute instead of "data".

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089282#4089282

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4089282