/*
 * Copyright 2012-2016 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.boot.autoconfigure;

import java.lang.annotation.Documented;
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;

import org.springframework.context.annotation.Import;

/**
 * Import and apply the selected auto-configuration classes. Applies the same ordering
 * rules as {@code @EnableAutoConfiguration} but restricts the auto-configuration classes
 * to the specified set, rather than consulting {@code spring.factories}.
 * <p>
 * Generally, {@code @EnableAutoConfiguration} should used in preference to this
 * annotation, however, {@code @ImportAutoConfiguration} can be useful in some situations
 * and especially when writing tests.
 *
 * @author Phillip Webb
 * @since 1.3.0
 */
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@AutoConfigurationPackage
@Import(ImportAutoConfigurationImportSelector.class)
public @interface ImportAutoConfiguration {

	/**
	 * The auto-configuration classes that should be imported.
	 * @return the classes to import
	 */
	Class<?>[] value();

}
