package gw.globalization

uses java.lang.UnsupportedOperationException
uses gw.lang.reflect.IType

/**
 * Behavior defined for properties that are unsupported.
 */
class UnsupportedPropertyBehavior implements InvariantPropertyBehavior {

  public static final var DEFAULT_MESSAGE_FORMAT : String = "The {0} class does not support the {1} property."
  public static final var READONLY_MESSAGE_FORMAT : String  = "The {0} class does not support setting the {1} property (it is read-only)"
  var _className : String
  var _messageFormat : String

  construct(type : IType) {
    this(type, DEFAULT_MESSAGE_FORMAT)
  }

  construct(type : IType, messageFormat : String) {
    _className = type.RelativeName
    _messageFormat = messageFormat
  }

  override function getValue<T>() : T {
    return null
  }

  override function setValue(fieldName : String) {
    throw new UnsupportedOperationException(_messageFormat.formatMessage({_className, fieldName}))
  }

}