content: /*
   * Copyright 2002-2013 the original author or authors.
   *
   * Licensed 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.activejpa.examples.petclinic.util;
  
  import java.util.Collection;
  
  import org.activejpa.examples.petclinic.model.BaseEntity;
  import org.springframework.orm.ObjectRetrievalFailureException;
  
  /**
   * Utility methods for handling entities. Separate from the BaseEntity class mainly because of dependency on the
   * ORM-associated ObjectRetrievalFailureException.
   *
   * @author Juergen Hoeller
   * @author Sam Brannen
   * @see org.activejpa.examples.petclinic.model.BaseEntity
   * @since 29.10.2003
   */
  public abstract class EntityUtils {
  
      /**
       * Look up the entity of the given class with the given id in the given collection.
       *
       * @param entities    the collection to search
       * @param entityClass the entity class to look up
       * @param entityId    the entity id to look up
       * @return the found entity
       * @throws ObjectRetrievalFailureException
       *          if the entity was not found
       */
      public static <T extends BaseEntity> T getById(Collection<T> entities, Class<T> entityClass, int entityId)
              throws ObjectRetrievalFailureException {
          for (T entity : entities) {
              if (entity.getId().intValue() == entityId && entityClass.isInstance(entity)) {
                  return entity;
              }
          }
          throw new ObjectRetrievalFailureException(entityClass, entityId);
      }
  
  }
  