com.brienwheeler.svc.usergroups.validation.UserGroupNotExistValidator.java Source code

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Here is the source code for com.brienwheeler.svc.usergroups.validation.UserGroupNotExistValidator.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Brien L. Wheeler (brienwheeler@yahoo.com)
 *
 * 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:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * 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.
 */
package com.brienwheeler.svc.usergroups.validation;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.util.StringUtils;

import com.brienwheeler.svc.usergroups.IUserGroupService;

public class UserGroupNotExistValidator
        implements ConstraintValidator<UserGroupNotExist, String>, ApplicationContextAware {
    private ApplicationContext applicationContext;
    private UserGroupNotExist constraintAnnotation;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    @Override
    public void initialize(UserGroupNotExist constraintAnnotation) {
        this.constraintAnnotation = constraintAnnotation;
    }

    @Override
    public boolean isValid(String value, ConstraintValidatorContext context) {
        if (!StringUtils.hasText(value))
            return !constraintAnnotation.failOnEmpty();

        IUserGroupService userGroupService = applicationContext.getBean(constraintAnnotation.userGroupService(),
                IUserGroupService.class);
        return userGroupService.findByNameAndType(value, constraintAnnotation.groupType()) == null;
    }

}