fr.esiea.windmeal.service.validation.implementation.ValidationService.java Source code

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Here is the source code for fr.esiea.windmeal.service.validation.implementation.ValidationService.java

Source

package fr.esiea.windmeal.service.validation.implementation;

import fr.esiea.windmeal.model.Model;
import fr.esiea.windmeal.service.validation.IValidationService;
import org.springframework.stereotype.Service;

import javax.validation.ConstraintViolation;
import javax.validation.Path;
import javax.validation.Validation;
import javax.validation.Validator;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * Copyright (c) 2013 ESIEA M. Labusquiere D. Ds
 * <p/>
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * <p/>
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * <p/>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
@Service
public class ValidationService<T extends Model> implements IValidationService<T> {

    private static final Validator validator = Validation.buildDefaultValidatorFactory().getValidator();

    @Override
    public Map<Object, String> validate(T model) {

        Set<ConstraintViolation<T>> violations = validator.validate(model);

        if (violations.isEmpty())
            return Collections.EMPTY_MAP;

        HashMap<Object, String> errorMap = new HashMap<Object, String>();
        for (ConstraintViolation<T> violation : violations) {
            String[] propertyPath = violation.getPropertyPath().toString().split("\\.");
            errorMap.put(propertyPath[propertyPath.length - 1], violation.getMessage());
        }

        return errorMap;
    }
}