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The MT Bean Validators is a collection of JSR-303/JSR-349/JSR-380 bean validators. It's extracted from GWT Bean Validators and contains no dependencies to GWT.

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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 de.knightsoftnet.validators.shared;

import de.knightsoftnet.validators.shared.impl.GlnValidator;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import jakarta.validation.Constraint;
import jakarta.validation.Payload;
import jakarta.validation.constraints.Digits;
import jakarta.validation.constraints.Size;

/**
 * The annotated element must be a valid Global Location Number (until 2009 known as International
 * Location Number).

 * Supported types are Strings, other Objects are transfered to Strings, null elements
 * are considered valid.

 * There are numeric, size and checksum tests by apache commons validation routines.

 *
 * @author Manfred Tremmel
 *
 */
@Documented
@Constraint(validatedBy = GlnValidator.class)
@Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE,
    ElementType.CONSTRUCTOR, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@Size(min = GlnValidator.GLN_LENGTH)
@Digits(integer = GlnValidator.GLN_LENGTH, fraction = 0)
public @interface Gln {
  /**
   * localized message.
   *
   * @return localized validation message
   */
  String message() default "{de.knightsoftnet.validators.shared.Gln.message}";

  /**
   * groups to use.
   *
   * @return array of validation groups
   */
  Class[] groups() default {};

  /**
   * payload whatever.
   *
   * @return payload class
   */
  Class[] payload() default {};

  /**
   * Defines several {@code @Gln} annotations on the same element.
   */
  @Target({ElementType.METHOD, ElementType.FIELD, ElementType.ANNOTATION_TYPE,
      ElementType.CONSTRUCTOR, ElementType.PARAMETER})
  @Retention(RetentionPolicy.RUNTIME)
  @Documented
  @interface List {
    /**
     * gln value.
     *
     * @return value
     */
    Gln[] value();
  }
}