csns.web.validator.DepartmentValidator.java Source code

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Here is the source code for csns.web.validator.DepartmentValidator.java

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/*
 * This file is part of the CSNetwork Services (CSNS) project.
 * 
 * Copyright 2012-2014, Chengyu Sun (csun@calstatela.edu).
 * 
 * CSNS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 * 
 * CSNS 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 Affero General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with CSNS. If not, see http://www.gnu.org/licenses/agpl.html.
 */
package csns.web.validator;

import java.util.regex.Pattern;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;

import csns.model.academics.Department;
import csns.model.academics.dao.DepartmentDao;

@Component
public class DepartmentValidator implements Validator {

    @Autowired
    DepartmentDao departmentDao;

    @Override
    public boolean supports(Class<?> clazz) {
        return Department.class.isAssignableFrom(clazz);
    }

    @Override
    public void validate(Object target, Errors errors) {
        Department department = (Department) target;
        Long id = department.getId();

        String name = department.getName();
        if (!StringUtils.hasText(name))
            errors.rejectValue("name", "error.field.required");
        else {
            Department d = departmentDao.getDepartmentByName(name);
            if (d != null && !d.getId().equals(id))
                errors.rejectValue("name", "error.department.name.taken");
        }

        String fullName = department.getFullName();
        if (!StringUtils.hasText(fullName))
            errors.rejectValue("fullName", "error.field.required");
        else {
            Department d = departmentDao.getDepartmentByFullName(fullName);
            if (d != null && !d.getId().equals(id))
                errors.rejectValue("fullName", "error.department.name.taken");
        }

        String abbreviation = department.getAbbreviation();
        if (!StringUtils.hasText(abbreviation))
            errors.rejectValue("abbreviation", "error.field.required");
        else if (!Pattern.matches("[a-z]+", abbreviation))
            errors.rejectValue("abbreviation", "error.department.abbreviation.invalid");
        else {
            Department d = departmentDao.getDepartment(abbreviation);
            if (d != null && !d.getId().equals(id))
                errors.rejectValue("abbreviation", "error.department.abbreviation.taken");
        }

        if (department.getAdministrators().size() == 0)
            errors.rejectValue("administrators", "error.field.required");
    }

}