| /* |
| * 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.knox.gateway.i18n.resources; |
| |
| import java.lang.reflect.Proxy; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| public class ResourcesFactory { |
| |
| private static Map<Class<?>, Object> proxies = new ConcurrentHashMap<>(); |
| |
| @SuppressWarnings( "unchecked" ) |
| public static <T> T get( Class<T> clazz ) { |
| Object proxy = proxies.get( clazz ); |
| if( proxy == null ) { |
| Resources anno = clazz.getAnnotation( Resources.class ); |
| if( anno == null ) { |
| throw new IllegalArgumentException( clazz.getName() + " missing @" + Resources.class.getCanonicalName() ); |
| } |
| ResourcesInvoker invoker = new ResourcesInvoker( clazz ); |
| proxy = Proxy.newProxyInstance( clazz.getClassLoader(), new Class[]{ clazz }, invoker ); |
| proxies.put( clazz, proxy ); |
| } |
| return (T)proxy; |
| } |
| |
| } |