Package name.matthewgreet.strutscommons.annotation

Annotation Type ByteConversion

@Documented @Inherited @Target(FIELD) @Retention(RUNTIME) public @interface ByteConversion

Defines a form field (whether on a Struts Action or model of ModelDriven Struts Action) should be parsed to a byte or Byte type and error message to display if this fails. Also, defines a view helper field receives a formatted byte value. This is the default converter for byte and Byte fields.

There are two modes of behaviour for conversion, depending on the type of form field.

Validation Annotation Usage
Form field type Mode Description
String Pair conversion Converts string field value to byte or Byte field named by parsedFieldName
byte or Byte Auto conversion Converts directly from request parameter

By default, messages are added to the actionErrors list but this can be overridden by messageType:

Message Types
ERROR Message added to Action level error messages. Default.
FIELD Message added to field error messages using same name as field.
MESSAGE Message added to Action level info messages.
WARNING Message added to Action level warning messages.

Other parameters

Other Parameters
message If not empty string, text message to display. Used if messageKey is empty string or finds no message.
messageKey If not empty string, message key to retrieve from Action's TextProvider. Uses message if no key provided or no message found.
parsedFieldName If not empty string, name of field to contain parsed value. Defaults to 'parsed' plus capitalised field name, such as 'parsedLimit'. Only applies for pair conversion.

When applied to a view helper field, StrutsMiscellaneousLibrary#updateDisplay formats from a source record field with the same name but only certain combinations are recognised.

Formatting Annotation Usage
Display field type Record field type Notes
String byte or Byte
String array byte or Byte array
String array byte or Byte collection
String collection byte or Byte array
String collection byte or Byte collection

  • Element Details

    • message

      String message
      Default:
      ""

    • messageKey

      String messageKey
      Default:
      ""

    • messageType

      Required.MessageType messageType
      Default:
      ERROR

    • parsedFieldName

      String parsedFieldName
      Default:
      ""