/*
 * Copyright 2002-2017 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 reactor.util.annotation;

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

import javax.annotation.Nonnull;
import javax.annotation.meta.TypeQualifierDefault;

A common Reactor annotation (similar to Spring one) to declare that parameters and return
values are to be considered as non-nullable by default for a given package.
Leverages JSR 305 meta-annotations to indicate nullability in Java to common tools with
JSR 305 support and used by Kotlin to infer nullability of Reactor API.
Should be used at package level in association with Nullable annotations at parameter and return value level. 
Author:
Sebastien Deleuze, Juergen Hoeller
See Also:
Nullable
NonNull
Since:
3.1.0/**
 * A common Reactor annotation (similar to Spring one) to declare that parameters and return
 * values are to be considered as non-nullable by default for a given package.
 * Leverages JSR 305 meta-annotations to indicate nullability in Java to common tools with
 * JSR 305 support and used by Kotlin to infer nullability of Reactor API.
 *
 * <p>Should be used at package level in association with {@link Nullable}
 * annotations at parameter and return value level.
 *
 * @author Sebastien Deleuze
 * @author Juergen Hoeller
 * @since 3.1.0
 * @see Nullable
 * @see NonNull
 */
@Target(ElementType.PACKAGE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Nonnull
@TypeQualifierDefault({ElementType.METHOD, ElementType.PARAMETER})
public @interface NonNullApi {
}