com.cws.us.pws.validators.EmailAddressValidator.java Source code

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Here is the source code for com.cws.us.pws.validators.EmailAddressValidator.java

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/*
 * Copyright (c) 2009 - 2013 By: CWS, Inc.
 * 
 * Licensed 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 com.cws.us.pws.validators;

import org.slf4j.Logger;
import java.util.regex.Pattern;
import org.slf4j.LoggerFactory;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import org.springframework.validation.ValidationUtils;

import com.cws.us.pws.Constants;
import com.cws.esolutions.core.utils.dto.EmailMessage;

/*
 * Project: cws_java_source
 * Package: com.cws.us.pws.validators
 * File: EmailAddressValidator.java
 *
 * History
 * ----------------------------------------------------------------------------
 * kh05451 @ Jan 4, 2013 3:36:54 PM
 *     Created.
 */
public class EmailAddressValidator implements Validator {
    private String messageEmailAddressRequired = null;

    private static final String CNAME = EmailAddressValidator.class.getName();

    private static final Logger DEBUGGER = LoggerFactory.getLogger(Constants.DEBUGGER);
    private static final boolean DEBUG = DEBUGGER.isDebugEnabled();

    public final void setMessageEmailAddressRequired(final String value) {
        final String methodName = EmailAddressValidator.CNAME
                + "#setMessageEmailAddressRequired(final String value)";

        if (DEBUG) {
            DEBUGGER.debug(methodName);
            DEBUGGER.debug("Value: {}", value);
        }

        this.messageEmailAddressRequired = value;
    }

    @Override
    public final boolean supports(final Class<?> value) {
        final String methodName = EmailAddressValidator.CNAME + "#supports(final Class value)";

        if (DEBUG) {
            DEBUGGER.debug(methodName);
            DEBUGGER.debug("Value: {}", value);
        }

        final boolean isSupported = String.class.isAssignableFrom(value);

        if (DEBUG) {
            DEBUGGER.debug("isSupported: {}", isSupported);
        }

        return isSupported;
    }

    @Override
    public final void validate(final Object target, final Errors errors) {
        final String methodName = EmailAddressValidator.CNAME + "#validate(final <Class> request)";

        if (DEBUG) {
            DEBUGGER.debug(methodName);
            DEBUGGER.debug("target: {}", target);
            DEBUGGER.debug("errors: {}", errors);
        }

        final EmailMessage message = (EmailMessage) target;
        final Pattern pattern = Pattern.compile(
                "(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])");

        if (DEBUG) {
            DEBUGGER.debug("EmailMessage: {}", message);
        }

        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "emailAddr", this.messageEmailAddressRequired);

        for (String str : message.getEmailAddr()) {
            if (DEBUG) {
                DEBUGGER.debug("Address: {}", str);
            }

            if (!(pattern.matcher(str).matches())) {
                errors.reject("emailAddr", this.messageEmailAddressRequired);
            }
        }
    }
}