Package name.matthewgreet.strutscommons.annotation

Annotation Interface DoubleConversion

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

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

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

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

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

ERROR
Message added to Action level error messages. Default.
FIELD
Message added to field error messages.
MESSAGE
Message added to Action level info messages.

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.

  • Element Details

    • message

      String message
      Default:
      ""

    • messageKey

      String messageKey
      Default:
      ""

    • messageType

      Required.MessageType messageType
      Default:
      ERROR

    • parsedFieldName

      String parsedFieldName
      Default:
      ""