io.micrometer.core.lang.NonNullFields Maven / Gradle / Ivy
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/**
* Copyright 2017 Pivotal Software, Inc.
*
* 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
*
* https://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 io.micrometer.core.lang;
import javax.annotation.Nonnull;
import javax.annotation.meta.TypeQualifierDefault;
import java.lang.annotation.*;
/**
* A common annotation to declare that fields 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 the API.
*
Should be used at package level in association with {@link Nullable}
* annotations at field level.
*
* @see NonNullFields
* @see Nullable
* @see NonNull
*/
@Target({ElementType.PACKAGE, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Nonnull
@TypeQualifierDefault(ElementType.FIELD)
public @interface NonNullFields {
}