/**

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

 *

 * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

 *

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * Contributor(s):

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.

 *

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 */

package net.java.html.json;

import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;

/** Can be used in classes annotated with {@link Model} annotation to

 * define a derived property. Value of derived property is based on values

 * of {@link Property} as enumerated by {@link Model#properties()}.

 * <p>

 * The name of the derived property is the name of the method. The arguments

 * of the method must match names and types of some of the properties 

 * from {@link Model#properties()} list. As soon as one of these properties

 * changes, the method is called to recompute its new value. 

 * This applies to inner changes in derived properties as well - e.g.

 * if the dependant property is another type generated by {@link Model @Model} annotation -

 * changes in its own properties trigger recomputation of this derived 

 * property as well (since version 0.9).

 * <p>

 * Method's return type defines the type of the derived property. It may be

 * any primitive type, {@link String}, {@link Enum enum type} or a 

 * type generated by {@link Model @Model} annotation. One may 

 * also return an array by returning a list of such (boxed) type

 * (for example {@link java.util.List List}<{@link String}> or {@link java.util.List List}<{@link Integer}>).

 * <p>

 * An example testing <a target="_blank" href="http://dew.apidesign.org/dew/#7545568">

 * whether a number is a prime</a> using a {@link ComputedProperty} is available

 * on-line.

 *

 * @author Jaroslav Tulach

 */

@Retention(RetentionPolicy.SOURCE)

@Target(ElementType.METHOD)

public @interface ComputedProperty {

}