package com.javaweb.framework.util;

import com.javaweb.common.exception.base.BaseException;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import java.util.Set;


/**
 * hibernate-validator校验工具类
 * 参考文档：http://docs.jboss.org/hibernate/validator/5.4/reference/en-US/html_single/
 */
public class ValidatorUtils
{
    private static Validator validator;
    static
    {
        validator = Validation.buildDefaultValidatorFactory().getValidator();
    }

    /**
     * 校验对象
     * @param object        待校验对象
     * @param groups        待校验的组
     * @throws BaseException  校验不通过，则报BaseException异常
     */
    public static void validateEntity(Object object, Class<?> ... groups) throws BaseException
    {
        Set<ConstraintViolation<Object>> constraintViolations = validator.validate(object, groups);
        if (!constraintViolations.isEmpty())
        {
            ConstraintViolation<Object> constraint = (ConstraintViolation<Object>) constraintViolations.iterator()
                    .next();
            throw new BaseException(constraint.getMessage());
        }
    }
}