001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.tide.validation;
023
024import java.util.Set;
025
026import javax.naming.InitialContext;
027import javax.naming.NamingException;
028import javax.validation.ConstraintViolation;
029import javax.validation.Validation;
030import javax.validation.Validator;
031import javax.validation.ValidatorFactory;
032
033import org.granite.logging.Logger;
034import org.granite.tide.validators.EntityValidator;
035import org.granite.tide.validators.InvalidValue;
036
037/**
038 * @author William DRAI
039 */
040public class BeanValidation implements EntityValidator {
041        
042        private static final Logger log = Logger.getLogger(BeanValidation.class);
043    
044    private ValidatorFactory validatorFactory = null;
045    
046    
047    public BeanValidation() {
048        try {
049                InitialContext ic = new InitialContext();
050                this.validatorFactory = (ValidatorFactory)ic.lookup("java:comp/ValidatorFactory");
051        }
052        catch (NamingException e) {
053                log.info("ValidatorFactory not found in JNDI, build default");
054                this.validatorFactory = Validation.buildDefaultValidatorFactory();
055        }
056    }
057    
058    public BeanValidation(ValidatorFactory validatorFactory) {
059        this.validatorFactory = validatorFactory;
060    }
061    
062    
063    @SuppressWarnings("unchecked")
064    public InvalidValue[] getPotentialInvalidValues(Class<?> entityClass, String propertyName, Object value) {
065        Validator validator = validatorFactory.getValidator();
066        
067        Set<?> constraintViolations = validator.validateValue(entityClass, propertyName, value);
068        return convertConstraintViolations((Set<ConstraintViolation<?>>)constraintViolations);
069    }
070
071
072    public static InvalidValue[] convertConstraintViolations(Set<ConstraintViolation<?>> constraintViolations) {
073        InvalidValue[] converted = new org.granite.tide.validators.InvalidValue[constraintViolations.size()];
074        int i = 0;
075        for (ConstraintViolation<?> cv : constraintViolations) {
076            if (cv.getRootBean() == null) {
077                converted[i++] = new InvalidValue(
078                    cv.getRootBeanClass(),
079                    cv.getPropertyPath().toString(),
080                    cv.getInvalidValue(),
081                    cv.getMessage()
082                );
083            }
084            else {
085                converted[i++] = new InvalidValue(
086                    cv.getRootBean(),
087                    cv.getLeafBean() != null ? cv.getLeafBean() : cv.getRootBean(),
088                    cv.getPropertyPath().toString(),
089                    cv.getInvalidValue(),
090                    cv.getMessage()
091                );
092            }
093        }
094        return converted;
095    }
096}