content: /*
   * Copyright 2018-2024 adorsys GmbH & Co KG
   *
   * This program is free software: you can redistribute it and/or modify it
   * under the terms of the GNU Affero General Public License as published
   * by the Free Software Foundation, either version 3 of the License, or (at
   * your option) any later version. This program is distributed in the hope that
   * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
   * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   * See the GNU Affero General Public License for more details.
   *
   * You should have received a copy of the GNU Affero General Public License
   * along with this program. If not, see https://www.gnu.org/licenses/.
   *
   * This project is also available under a separate commercial license. You can
   * contact us at sales@adorsys.com.
   */
  
  package de.adorsys.psd2.xs2a.service.validator;
  
  import de.adorsys.psd2.xs2a.core.domain.TppMessageInformation;
  import de.adorsys.psd2.xs2a.core.service.validator.ValidationResult;
  import org.jetbrains.annotations.NotNull;
  
  import java.util.Collections;
  import java.util.Set;
  
  /**
   * Generic validator for validating certain request according to some business rules
   *
   * @param <T> type of object to be checked
   */
  public interface BusinessValidator<T> {
      /**
       * Validates some object according to some business rules
       *
       * @param object business object to be validated
       * @return valid result if the object is valid, invalid result with appropriate error otherwise
       */
      @NotNull
      ValidationResult validate(@NotNull T object);
  
      /**
       * Checks some object according to some business rules and creates warning messages if there is inconsistency in the logic
       *
       * @param object business object to be validated
       * @return empty set if the object doesn't have inconsistencies, set of warning messages  otherwise
       */
      @NotNull
      default Set<TppMessageInformation> buildWarningMessages(@NotNull T object) {
          return Collections.emptySet();
      }
  }
  