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/**
 * Copyright (c) 2017 Contributors to the Eclipse Foundation
 * Copyright 2017 SmartBear Software
 * 
 * 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.eclipse.microprofile.openapi.annotations;

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.eclipse.microprofile.openapi.annotations.info.Info;
import org.eclipse.microprofile.openapi.annotations.security.SecurityRequirement;
import org.eclipse.microprofile.openapi.annotations.servers.Server;
import org.eclipse.microprofile.openapi.annotations.tags.Tag;

/**
 * OpenAPI
 * 
 * This is the root document object of the OpenAPI document. It contains required and optional fields.
 * 
 * @see OpenAPI
 *      Specification OpenAPI Object
 */

@Target({ElementType.TYPE, ElementType.PACKAGE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
public @interface OpenAPIDefinition {
    /**
     * Required: Provides metadata about the API. The metadata MAY be used by tooling as required.
     *
     * @return the metadata about this API
     */
    Info info();

    /**
     * A list of tags used by the specification with additional metadata. The order of the tags can be used to reflect
     * on their order by the parsing tools.
     *
     * @return the tags used by the specification with any additional metadata
     */
    Tag[] tags() default {};

    /**
     * An array of Server Objects, which provide connectivity information to a target server. If the servers property is
     * not provided, or is an empty array, the default value would be a Server Object with a url value of /.
     *
     * @return the servers of this API
     */
    Server[] servers() default {};

    /**
     * A declaration of which security mechanisms can be used across the API.
     *
     * @return the array of servers used for this API
     */
    SecurityRequirement[] security() default {};

    /**
     * Any additional external documentation for the API
     *
     * @return the external documentation for this API.
     */
    ExternalDocumentation externalDocs() default @ExternalDocumentation;

    /**
     * An element to hold a set of reusable objects for different aspects of the OpenAPI Specification (OAS).
     *
     * All objects defined within the components object will have no effect on the API unless they are explicitly
     * referenced from properties outside the components object.
     *
     * @return the element with a set of reusable objects for different aspects of the OAS.
     */
    Components components() default @Components;
}