com.skysql.manager.validators.UserNameValidator.java Source code

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Here is the source code for com.skysql.manager.validators.UserNameValidator.java

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/*
 * This file is distributed as part of the MariaDB Manager.  It is free
 * software: you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation,
 * version 2.
 *
 * This program 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Copyright 2012-2014 SkySQL Corporation Ab
 */

package com.skysql.manager.validators;

import com.skysql.manager.api.UserInfo;
import com.vaadin.data.Validator;

/**
 * The Class UserNameValidator.
 */
public class UserNameValidator implements Validator {

    private static final long serialVersionUID = 0x4C656F6E6172646FL;

    private UserInfo userInfo;

    /**
     * Instantiates a new user name validator.
     *
     * @param userInfo the user info
     */
    public UserNameValidator(UserInfo userInfo) {
        super();
        this.userInfo = userInfo;
    }

    /**
     * Checks if is valid.
     *
     * @param value the value
     * @return true, if is valid
     */
    public boolean isValid(Object value) {
        if (value == null || !(value instanceof String)) {
            return false;
        }
        return (true);
    }

    // Upon failure, the validate() method throws an exception
    /* (non-Javadoc)
     * @see com.vaadin.data.Validator#validate(java.lang.Object)
     */
    public void validate(Object value) throws InvalidValueException {
        if (!isValid(value)) {
            throw new InvalidValueException("Username invalid");
        } else {
            String name = (String) value;
            if (!name.matches("[a-zA-Z0-9_]+")) {
                throw new InvalidValueException("Username contains illegal characters");
            } else if (userInfo != null && userInfo.findRecordByID((String) value) != null) {
                throw new InvalidValueException("Username already exists");
            }
        }
    }
}