EntitySupport.java

/* Jug Management is a web application conceived to manage user groups or 
 * communities focused on a certain domain of knowledge, whose members are 
 * constantly sharing information and participating in social and educational 
 * events. Copyright (C) 2011 Ceara Java User Group - CEJUG.
 * 
 * This application is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by the 
 * Free Software Foundation; either version 2.1 of the License, or (at your 
 * option) any later version.
 * 
 * This application 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 Lesser General Public 
 * License for more details.
 * 
 * There is a full copy of the GNU Lesser General Public License along with 
 * this library. Look for the file license.txt at the root level. If you do not
 * find it, write to the Free Software Foundation, Inc., 59 Temple Place, 
 * Suite 330, Boston, MA 02111-1307 USA.
 * */
package org.cejug.yougi.util;

import java.util.UUID;
import org.cejug.yougi.entity.Identified;

/**
 * @author Hildeberto Mendonca  - http://www.hildeberto.com
 */
public enum EntitySupport {
    
    INSTANCE;
    
    /**
     * @return Returns a 32 characteres string to be used as id of entities that
     * implements the interface org.cejug.persistence.Identified.
     */
    public String generateEntityId() {
        UUID uuid = UUID.randomUUID();
        return uuid.toString().replaceAll("-", "").toUpperCase();
    }
    
    /**
     * Verifies whether the id of an identified entity is not valid to persist
     * in the database.
     * @param identified entity class that implements the interface 
     * org.cejug.persistence.Identified.
     * @return true if the id is not valid.
     */
    public boolean isIdNotValid(Identified identified) {
        // TODO: lançar uma excessão se o parâmetro for nulo.
        if(identified == null || identified.getId() == null || identified.getId().isEmpty()) {
            return true;
        }
        return false;
    }
}