package gw.rating.rtm.domain.migration
uses java.util.ArrayList
uses java.util.Collections
uses java.util.List

/**
 * Base class for validating entities being imported as part of a
 * <code>RateBook</code> migration.
 */
abstract class BeanImportValidator<T extends KeyableBean> {

  protected var _validationErrors : List<String>
  protected var _validationWarnings : List<String>
  
  construct() {
    _validationErrors  = new ArrayList<String>()  
    _validationWarnings = new ArrayList<String>()
  }
  
  abstract function valid(bean : T) : boolean
  
  /**
   * Clear the validation error list
   */
  function clear() {
    _validationErrors.clear()  
    _validationWarnings.clear()
  }
  
  /**
   * Add a validation error
   */
  function addError(error : String) {
    _validationErrors.add(error)
  }
  
  function addWarning(warning : String) {
    _validationWarnings.add(warning)
  }
  
  /**
   * Return the list of validation error messages
   */
  property get ValidationErrors() : List<String> {
    return Collections.unmodifiableList(_validationErrors)
  }

  property get ValidationWarnings() : List<String> {
    return Collections.unmodifiableList(_validationWarnings)
  }
}