| /* |
| * 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.felix.utils.repository; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.osgi.resource.Capability; |
| import org.osgi.resource.Requirement; |
| import org.osgi.service.repository.Repository; |
| |
| public class AggregateRepository implements Repository { |
| |
| private final Collection<Repository> repositories; |
| |
| public AggregateRepository(Collection<Repository> repositories) { |
| this.repositories = repositories; |
| } |
| |
| @Override |
| public Map<Requirement, Collection<Capability>> findProviders(Collection<? extends Requirement> requirements) { |
| Map<Requirement, Collection<Capability>> result = new HashMap<>(); |
| for (Requirement requirement : requirements) { |
| List<Capability> caps = new ArrayList<>(); |
| for (Repository repository : repositories) { |
| Map<Requirement, Collection<Capability>> resMap = |
| repository.findProviders(Collections.singleton(requirement)); |
| Collection<Capability> res = resMap != null ? resMap.get(requirement) : null; |
| if (res != null) { |
| caps.addAll(res); |
| } |
| } |
| result.put(requirement, caps); |
| } |
| return result; |
| } |
| } |