001/* -*- mode: Java; c-basic-offset: 2; indent-tabs-mode: nil; coding: utf-8-unix -*- 002 * 003 * Copyright © 2018 microBean. 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 014 * implied. See the License for the specific language governing 015 * permissions and limitations under the License. 016 */ 017package org.microbean.kubernetes.controller.cdi.annotation; 018 019import java.lang.annotation.Documented; 020import java.lang.annotation.ElementType; 021import java.lang.annotation.Retention; 022import java.lang.annotation.RetentionPolicy; 023import java.lang.annotation.Target; 024 025import javax.inject.Qualifier; 026 027import javax.enterprise.util.AnnotationLiteral; 028 029/** 030 * A {@link Qualifier} that can be used only on an observer method's 031 * <a 032 * href="http://docs.jboss.org/cdi/spec/2.0/cdi-spec.html#observer_method_event_parameter">event 033 * parameter</a> that is also annotated with an annotation annotated 034 * with {@link KubernetesEventSelector}, thus indicating that the 035 * observer method is interested in being notified of the 036 * <em>deletion</em> of certain Kubernetes resources. 037 * 038 * @author <a href="https://about.me/lairdnelson" 039 * target="_parent">Laird Nelson</a> 040 * 041 * @see KubernetesEventSelector 042 */ 043@Documented 044@Qualifier 045@Retention(value = RetentionPolicy.RUNTIME) 046@Target({ ElementType.PARAMETER }) 047public @interface Deleted { 048 049 050 /* 051 * Inner and nested classes. 052 */ 053 054 055 /** 056 * An {@link AnnotationLiteral} that implements {@link Deleted}. 057 * 058 * @author <a href="https://about.me/lairdnelson" 059 * target="_parent">Laird Nelson</a> 060 */ 061 public static final class Literal extends AnnotationLiteral<Deleted> implements Deleted { 062 063 064 /* 065 * Static fields. 066 */ 067 068 069 private static final long serialVersionUID = 1L; 070 071 /** 072 * A {@link Deleted} instance. 073 * 074 * <p>This field is never {@code null}.</p> 075 */ 076 public static final Deleted INSTANCE = new Literal(); 077 078 } 079 080}