Examples of javax.servlet.jsp.tagext.ValidationMessage

javax.servlet.jsp.tagext.ValidationMessage
A validation message from a TagLibraryValidator.
A JSP container may (optionally) support a jsp:id attribute to provide higher quality validation errors. When supported, the container will track the JSP pages as passed to the container, and will assign to each element a unique "id", which is passed as the value of the jsp:id attribute. Each XML element in the XML view available will be extended with this attribute. The TagLibraryValidator can then use the attribute in one or more ValidationMessage objects. The container then, in turn, can use these values to provide more precise information on the location of an error.




  // constructs a ValidationMessage[] from a single String and no ID
  private static ValidationMessage[] vmFromString(String message) {
    return new ValidationMessage[] {
      new ValidationMessage(null, message)
    };
  }

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    }


    // constructs a ValidationMessage[] from a single String and no ID
    private ValidationMessage[] vmFromString(String message) {
  return new ValidationMessage[] {
      new ValidationMessage(null, message)
  };
    }

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    return EMPTY_MESSAGE;
  }


  private ValidationMessage[] generateValidationMessages(final TagData data) {
    final ValidationMessage[] messages = new ValidationMessage[1];
    messages[0] = new ValidationMessage(data.getId(),
        "Only one Attribute of action, onclick and link is allowed");
    return messages;
  }

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     * method to assist with failure [ as if it's not easy enough
     * already :-) ]
     */
    protected void fail(String message) {
        failed = true;
        messageVector.add(new ValidationMessage(lastElementId, message));
    }

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    }


    // constructs a ValidationMessage[] from a single String and no ID
    static ValidationMessage[] vmFromString(String message) {
  return new ValidationMessage[] {
      new ValidationMessage(null, message)
  };
    }

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        public ValidationMessage[] validate(TagData data) {
            final List<ValidationMessage> messages = new ArrayList<ValidationMessage>();
            
            Object o = data.getAttribute("fname");
            if (o == null) {
                messages.add(new ValidationMessage(data.getId(), "fname cannot be null."));
            }


            if (messages.size() == 0) {
                return null;
            }

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    return EMPTY_MESSAGE;
  }


  private ValidationMessage[] generateValidationMessages(TagData data) {
    ValidationMessage[] messages = new ValidationMessage[1];
    messages[0] = new ValidationMessage(data.getId(),
        "Only one Attribute of action, onclick and link is allowed");
    return messages;
  }

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        Collection<ValidationMessage> errors = new ArrayList<ValidationMessage>();


        Object beanclass = tag.getAttribute("beanclass");
        Object binding   = tag.getAttribute("binding");
        if (!(beanclass != null ^ binding != null)) {
            errors.add(new ValidationMessage(tag.getId(), "Exactly one of 'beanclass' or 'binding' must be supplied."));
        }


        String var = tag.getAttributeString("var");
        String id  = tag.getAttributeString("id");
        if (!(var != null ^ id != null)) {
            errors.add(new ValidationMessage(tag.getId(), "Exactly one of 'var' or 'id' must be supplied."));
        }


        return errors.toArray(new ValidationMessage[errors.size()]);
    }

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     * already :-) ]
     */


    protected void fail(String message) {
        failed = true;
        messageVector.add(new ValidationMessage(lastElementId, message));
    }

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    // constructs a ValidationMessage[] from a single String and no ID


    static ValidationMessage[] vmFromString(String message) {
        return new ValidationMessage[]{
                new ValidationMessage(null, message)
        };
    }

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