me.bulat.jivr.webmin.utils.EntityUtils.java Source code

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Here is the source code for me.bulat.jivr.webmin.utils.EntityUtils.java

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/*
 * Licensed to JIVR under one or more contributor
 *  license agreements. See the NOTICE file distributed with
 *  this work for additional information regarding copyright
 *  ownership. JIVR 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 me.bulat.jivr.webmin.utils;

import me.bulat.jivr.webmin.data.model.BaseEntity;
import org.springframework.orm.ObjectRetrievalFailureException;

import java.util.Collection;

/**
 * @author Alex Bogatikov
 *         Created on 25/09/2016.
 */
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() == entityId && entityClass.isInstance(entity)) {
                return entity;
            }
        }
        throw new ObjectRetrievalFailureException(entityClass, entityId);
    }

}