| /* |
| * 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.eclipse.aether.util.repository; |
| |
| import org.eclipse.aether.repository.Proxy; |
| import org.eclipse.aether.repository.ProxySelector; |
| import org.eclipse.aether.repository.RemoteRepository; |
| |
| /** |
| * A proxy selector that delegates to another selector but only if a repository has no proxy yet. If a proxy has already |
| * been assigned to a repository, that is selected. |
| */ |
| public final class ConservativeProxySelector |
| implements ProxySelector |
| { |
| |
| private final ProxySelector selector; |
| |
| /** |
| * Creates a new selector that delegates to the specified selector. |
| * |
| * @param selector The selector to delegate to in case a repository has no proxy yet, must not be {@code null}. |
| */ |
| public ConservativeProxySelector( ProxySelector selector ) |
| { |
| if ( selector == null ) |
| { |
| throw new IllegalArgumentException( "no proxy selector specified" ); |
| } |
| this.selector = selector; |
| } |
| |
| public Proxy getProxy( RemoteRepository repository ) |
| { |
| Proxy proxy = repository.getProxy(); |
| if ( proxy != null ) |
| { |
| return proxy; |
| } |
| return selector.getProxy( repository ); |
| } |
| |
| } |