/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.syncope.core.persistence.jpa.validation.entity;
  
  import java.util.Set;
  import javax.persistence.PrePersist;
  import javax.persistence.PreUpdate;
  import javax.validation.ConstraintViolation;
  import javax.validation.Validator;
  import org.apache.commons.lang3.ClassUtils;
  import org.apache.syncope.core.persistence.api.attrvalue.validation.InvalidEntityException;
  import org.apache.syncope.core.persistence.api.entity.Any;
  import org.apache.syncope.core.persistence.api.entity.DynMembership;
  import org.apache.syncope.core.persistence.api.entity.Entity;
  import org.apache.syncope.core.persistence.api.entity.GroupableRelatable;
  import org.apache.syncope.core.persistence.api.entity.ProvidedKeyEntity;
  import org.apache.syncope.core.persistence.api.entity.Schema;
  import org.apache.syncope.core.persistence.api.entity.policy.Policy;
  import org.apache.syncope.core.persistence.api.entity.task.Task;
  import org.apache.syncope.core.spring.ApplicationContextProvider;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * JPA validation listener implementing bean validation.
   */
  public class EntityValidationListener {
  
      private static final Logger LOG = LoggerFactory.getLogger(EntityValidationListener.class);
  
      @PrePersist
      @PreUpdate
      public void validate(final Object object) {
          final Validator validator = ApplicationContextProvider.getBeanFactory().getBean(Validator.class);
          Set<ConstraintViolation<Object>> violations = validator.validate(object);
          if (!violations.isEmpty()) {
              LOG.warn("Bean validation errors found: {}", violations);
  
              Class<?> entityInt = null;
              for (Class<?> interf : ClassUtils.getAllInterfaces(object.getClass())) {
                  if (!Entity.class.equals(interf)
                          && !ProvidedKeyEntity.class.equals(interf)
                          && !Schema.class.equals(interf)
                          && !Task.class.equals(interf)
                          && !Policy.class.equals(interf)
                          && !GroupableRelatable.class.equals(interf)
                          && !Any.class.equals(interf)
                          && !DynMembership.class.equals(interf)
                          && Entity.class.isAssignableFrom(interf)) {
  
                      entityInt = interf;
                  }
              }
  
              throw new InvalidEntityException(entityInt == null
                      ? "Entity" : entityInt.getSimpleName(), violations);
          }
      }
  }