1 /* 2 * Copyright 2018 LINE Corporation 3 * 4 * LINE Corporation licenses this file to you under the Apache License, 5 * version 2.0 (the "License"); you may not use this file except in compliance 6 * with the License. You may obtain a copy of the License at: 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations 14 * under the License. 15 */ 16 package com.linecorp.centraldogma.common.util; 17 18 import java.lang.annotation.Documented; 19 import java.lang.annotation.ElementType; 20 import java.lang.annotation.Retention; 21 import java.lang.annotation.RetentionPolicy; 22 import java.lang.annotation.Target; 23 24 import javax.annotation.Nonnull; 25 import javax.annotation.Nullable; 26 import javax.annotation.meta.TypeQualifierDefault; 27 28 /** 29 * An annotation that signifies the return values, parameters and fields are non-nullable by default 30 * leveraging the JSR-305 {@link Nonnull} annotation. Annotate a package with this annotation and 31 * annotate nullable return values, parameters and fields with {@link Nullable}. 32 */ 33 @Nonnull 34 @Documented 35 @Target(ElementType.PACKAGE) 36 @Retention(RetentionPolicy.RUNTIME) 37 @TypeQualifierDefault({ ElementType.METHOD, ElementType.PARAMETER, ElementType.FIELD, ElementType.TYPE_USE }) 38 public @interface NonNullByDefault { 39 }