/*
 * Copyright 2014 the original author or authors.
 *
 * 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 org.springframework.data.rest.core.annotation;

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

/**
 * Annotate a {@link org.springframework.data.repository.Repository} with this to customize export mapping and rels.
 * 
 * @author Oliver Gierke
 */
@Target({ ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Inherited
public @interface RepositoryRestResource {

	/**
	 * Flag indicating whether this resource is exported at all.
	 * 
	 * @return {@literal true} if the resource is to be exported, {@literal false} otherwise.
	 */
	boolean exported() default true;

	/**
	 * The path segment under which this resource is to be exported.
	 * 
	 * @return A valid path segment.
	 */
	String path() default "";

	/**
	 * The rel value to use when generating links to the collection resource.
	 * 
	 * @return A valid rel value.
	 */
	String collectionResourceRel() default "";

	/**
	 * The description of the collection resource.
	 * 
	 * @return
	 */
	Description collectionResourceDescription() default @Description(value = "");

	/**
	 * The rel value to use when generating links to the item resource.
	 * 
	 * @return A valid rel value.
	 */
	String itemResourceRel() default "";

	/**
	 * The description of the item resource.
	 * 
	 * @return
	 */
	Description itemResourceDescription() default @Description(value = "");

	/**
	 * Configures the projection type to be used when embedding item resources into collections and related resources.
	 * Defaults to {@link None}, which indicates full rendering of the items in a collection resource and no inlining of
	 * related resources.
	 * 
	 * @return
	 */
	Class<?> excerptProjection() default None.class;

	static class None {}
}