org.xaloon.wicket.plugin.user.validator.PasswordStrengthValidator.java Source code

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Here is the source code for org.xaloon.wicket.plugin.user.validator.PasswordStrengthValidator.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.xaloon.wicket.plugin.user.validator;

import org.apache.wicket.validation.validator.PatternValidator;

/**
 * Kindly borrowed from http://www.mkyong.com/regular-expressions/how-to-validate-password-with-regular-expression/
 * 
 * @author vytautas r.
 */
public class PasswordStrengthValidator extends PatternValidator {
    private static final long serialVersionUID = 1L;

    /** singleton instance */
    private static final PasswordStrengthValidator INSTANCE = new PasswordStrengthValidator();

    /**
     * Retrieves the singleton instance of <code>EmailAddressValidator</code>.
     * 
     * @return the singleton instance of <code>EmailAddressValidator</code>
     */
    public static PasswordStrengthValidator getInstance() {
        return INSTANCE;
    }

    /**
     * Protected constructor to force use of static singleton accessor. Override this constructor to implement resourceKey(Component).
     */
    protected PasswordStrengthValidator() {
        super("((?=.*\\d)(?=.*[a-z])(?=.*[A-Z]).{6,20})");
    }
}