com.helger.masterdata.validation.email.StringEmailAddressWithMXCheckValidator Maven / Gradle / Ivy

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Library combining masterdata and validation

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/**
 * Copyright (C) 2014-2016 Philip Helger (www.helger.com)
 * philip[at]helger[dot]com
 *
 * 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.helger.masterdata.validation.email;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;

import com.helger.smtp.util.EmailAddressValidator;
import com.helger.validation.EStandardValidationErrorTexts;
import com.helger.validation.result.IValidationResult;
import com.helger.validation.result.ValidationResultError;
import com.helger.validation.result.ValidationResultSuccess;
import com.helger.validation.validator.string.AbstractStringValidator;
import com.helger.validation.validator.string.StringEmailAddressNoMXCheckValidator;

/**
 * Validator for email addresses. Uses the {@link EmailAddressValidator} class
 * explicitly using a MX record check.

 * Warning: this may be slow when called very often, as a DNS lookup is
 * performed
 *
 * @see EmailAddressValidator
 * @see StringEmailAddressValidator
 * @see StringEmailAddressNoMXCheckValidator
 * @author Philip Helger
 */
@Immutable
public class StringEmailAddressWithMXCheckValidator extends AbstractStringValidator
{
  @Nonnull
  public IValidationResult validate (@Nullable final String sValue)
  {
    if (EmailAddressValidator.isValidWithMXCheck (sValue))
      return ValidationResultSuccess.getInstance ();
    return new ValidationResultError (EStandardValidationErrorTexts.INVALID_EMAIL_ADDRESS);
  }
}