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  package org.apache.cayenne;
  
  import org.apache.cayenne.validation.ValidationResult;
  
  /**
   * Defines a number of callback methods that allow an object to be validated before safe.
   * Entity class can implement this interface and its methods will be called automatically.
   *
   * @since 3.0
   */
  public interface Validating {
  
      /**
       * Performs property validation of the NEW object, appending any validation failures
       * to the provided validationResult object. This method is invoked by ObjectContext
       * before committing a NEW object to the database.
       */
      void validateForInsert(ValidationResult validationResult);
  
      /**
       * Performs property validation of the MODIFIED object, appending any validation
       * failures to the provided validationResult object. This method is invoked by
       * ObjectContext before committing a MODIFIED object to the database.
       */
      void validateForUpdate(ValidationResult validationResult);
  
      /**
       * Performs property validation of the DELETED object, appending any validation
       * failures to the provided validationResult object. This method is invoked by
       * ObjectContext before committing a DELETED object to the database.
       */
      void validateForDelete(ValidationResult validationResult);
  }
  