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/**
 * Copyright © 2006-2016 Web Cohesion ([email protected])
 *
 * 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.webcohesion.enunciate.metadata.qname;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Customize how an enum constant is mapped to a QName. See QName Enums.
 *
 * @author Ryan Heaton
 */
@Retention(RUNTIME)
@Target({FIELD})
public @interface XmlQNameEnumValue {

  /**
   * The namespace for this QName enum value. If left unspecified (i.e. the value is "##default"), then
   * standard JAXB namespacing applies, which looks like this:
   *
   * 
   *  If the enclosing class has {@link XmlQNameEnum} annotation and its namespace value is not "##default",
   *  then the namespace of the enclosing class.
   *  If the enclosing package has {@link javax.xml.bind.annotation.XmlSchema} annotation,
   *  and its {@link javax.xml.bind.annotation.XmlSchema#elementFormDefault() elementFormDefault}
   *  is {@link javax.xml.bind.annotation.XmlNsForm#QUALIFIED QUALIFIED}, then the namespace of
   *  the enclosing package.
   *  Otherwise "" (which produces unqualified element in the default namespace).
   * 
   *
   * @return The namespace for this QName enumeration.
   */
  String namespace() default "##default";

  /**
   * The QName local part. If the value is "##default" the local part will be the name of the enum constant.
   *
   * @return The QName local part.
   */
  String localPart() default "##default";

  /**
   * Exclude this enum constant from the known QName enums.
   *
   * @return Whether this enum constant should be excluded from the list of known QName constants.
   */
  boolean exclude() default false;
}