/*
* Copyright 2012-2016 the original author or authors.
*
* 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 org.springframework.data.rest.tests.gemfire;
import java.util.regex.Pattern;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
/**
* Value object to represent email addresses.
*
* @author Oliver Gierke
*/
@JsonSerialize(using = ToStringSerializer.class)
public final class EmailAddress {
private static final String EMAIL_REGEX = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";
private static final Pattern PATTERN = Pattern.compile(EMAIL_REGEX);
private final String value;
/**
* Creates a new {@link EmailAddress} from the given {@link String} representation.
*
* @param emailAddress must not be {@literal null} or empty.
*/
@JsonCreator
public EmailAddress(String emailAddress) {
Assert.isTrue(isValid(emailAddress), "Invalid email address!");
this.value = emailAddress;
}
/**
* Returns whether the given {@link String} is a valid {@link EmailAddress} which means you can safely instantiate the
* class.
*
* @param candidate
* @return
*/
public static boolean isValid(String candidate) {
return candidate == null ? false : PATTERN.matcher(candidate).matches();
}
/*
* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return value;
}
/*
* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof EmailAddress)) {
return false;
}
EmailAddress that = (EmailAddress) obj;
return this.value.equals(that.value);
}
/*
* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return value.hashCode();
}
@Component
static class EmailAddressToStringConverter implements Converter<EmailAddress, String> {
/*
* (non-Javadoc)
* @see org.springframework.core.convert.converter.Converter#convert(java.lang.Object)
*/
@Override
public String convert(EmailAddress source) {
return source == null ? null : source.value;
}
}
@Component
static class StringToEmailAddressConverter implements Converter<String, EmailAddress> {
/*
* (non-Javadoc)
* @see org.springframework.core.convert.converter.Converter#convert(java.lang.Object)
*/
public EmailAddress convert(String source) {
return StringUtils.hasText(source) ? new EmailAddress(source) : null;
}
}
}