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package javax.xml.bind.annotation;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;

/**
 * Used to map a property to a list simple type.
 *
 * Usage 
 * 
 * The @XmlList annotation can be used with the
 * following program elements: 
 * 
 
 *    JavaBean property 
 *    field 
 * 
 *
 * 
 * When a collection property is annotated just with @XmlElement,
 * each item in the collection will be wrapped by an element.
 * For example,
 *
 * 
 * @XmlRootElement
 * class Foo {
 *     @XmlElement
 *     List<String> data;
 * }
 * 
 *
 * would produce XML like this:
 *
 * 
 * <foo>
 *   <data>abc</data>
 *   <data>def</data>
 * </foo>
 * 
 *
 * @XmlList annotation, on the other hand, allows multiple values to be 
 * represented as whitespace-separated tokens in a single element. For example,
 *
 *  * @XmlRootElement
 * class Foo {
 *     @XmlElement
 *     @XmlList
 *     List<String> data;
 * }
 * 
 *
 * the above code will produce XML like this:
 *
 * 
 * <foo>
 *   <data>abc def</data>
 * </foo>
 * 
 *
 * This annotation can be used with the following annotations:
 *        {@link XmlElement}, 
 *        {@link XmlAttribute},
 *        {@link XmlValue},
 *        {@link XmlIDREF}.
 *  

 *     The use of @XmlList with {@link XmlValue} while
 *         allowed, is redundant since  {@link XmlList} maps a
 *         collection type to a simple schema type that derives by
 *         list just as {@link XmlValue} would.  
 *
 *     The use of @XmlList with {@link XmlAttribute} while
 *         allowed, is redundant since  {@link XmlList} maps a
 *         collection type to a simple schema type that derives by
 *         list just as {@link XmlAttribute} would.  
 *  
 *
 * @author Kohsuke Kawaguchi, Sun Microsystems, Inc.
Sekhar Vajjhala, Sun Microsystems, Inc.
 * @since JAXB2.0
 */
@Retention(RUNTIME) @Target({FIELD,METHOD,PARAMETER})
public @interface XmlList {
}