| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.aries.blueprint.plugin.model; |
| |
| import org.apache.aries.blueprint.plugin.Extensions; |
| import org.apache.aries.blueprint.plugin.spi.InjectLikeHandler; |
| import org.apache.aries.blueprint.plugin.spi.NamedLikeHandler; |
| import org.apache.aries.blueprint.plugin.spi.ValueInjectionHandler; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class AnnotationHelper { |
| public static Class<? extends Annotation>[] injectDependencyAnnotations = findInjectDependencyAnnotations(); |
| |
| private static Class<? extends Annotation>[] findInjectDependencyAnnotations() { |
| List<Class<? extends Annotation>> classes = new ArrayList<>(); |
| for (InjectLikeHandler<? extends Annotation> injectLikeHandler : Extensions.beanInjectLikeHandlers) { |
| classes.add(injectLikeHandler.getAnnotation()); |
| } |
| for (ValueInjectionHandler<? extends Annotation> valueInjectionHandler : Extensions.valueInjectionHandlers) { |
| classes.add(valueInjectionHandler.getAnnotation()); |
| } |
| return classes.toArray(new Class[classes.size()]); |
| } |
| |
| public static String findValue(Annotation[] annotations) { |
| for (ValueInjectionHandler valueInjectionHandler : Extensions.valueInjectionHandlers) { |
| Object annotation = findAnnotation(annotations, valueInjectionHandler.getAnnotation()); |
| if (annotation != null) { |
| String value = valueInjectionHandler.getValue(annotation); |
| if (value != null) { |
| return value; |
| } |
| } |
| } |
| return null; |
| } |
| |
| public static String findName(Annotation[] annotations) { |
| for (NamedLikeHandler namedLikeHandler : Extensions.namedLikeHandlers) { |
| Object annotation = findAnnotation(annotations, namedLikeHandler.getAnnotation()); |
| if (annotation != null) { |
| String value = namedLikeHandler.getName(annotation); |
| if (value != null) { |
| return value; |
| } |
| } |
| } |
| return null; |
| } |
| |
| public static <T> T findAnnotation(Annotation[] annotations, Class<T> annotation) { |
| for (Annotation a : annotations) { |
| if (a.annotationType() == annotation) { |
| return annotation.cast(a); |
| } |
| } |
| return null; |
| } |
| |
| public static boolean findSingletons(Annotation[] annotations) { |
| for (Class<? extends Annotation> singletonAnnotation : Extensions.singletons) { |
| Object annotation = findAnnotation(annotations, singletonAnnotation); |
| if (annotation != null) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |