| /* |
| * 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.resolver.test.util; |
| |
| 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.resource.Resource; |
| import org.osgi.resource.Wire; |
| import org.osgi.resource.Wiring; |
| import org.osgi.service.resolver.HostedCapability; |
| import org.osgi.service.resolver.ResolutionException; |
| import org.osgi.service.resolver.ResolveContext; |
| import org.osgi.service.resolver.Resolver; |
| |
| public class IterativeResolver implements Resolver { |
| |
| private final Resolver resolver; |
| |
| public IterativeResolver(Resolver resolver) { |
| this.resolver = resolver; |
| } |
| |
| public Map<Resource, List<Wire>> resolve(final ResolveContext context) throws ResolutionException { |
| |
| final Map<Resource, List<Wire>> wires = new HashMap<Resource, List<Wire>>(); |
| final Map<Resource, List<Wire>> invertedWires = new HashMap<Resource, List<Wire>>(); |
| Collection<Resource> resources = context.getMandatoryResources(); |
| for (final Resource resource : resources) { |
| // Build wiring |
| invertedWires.clear(); |
| for (Resource res : wires.keySet()) { |
| for (Wire wire : wires.get(res)) { |
| List<Wire> w = invertedWires.get(wire.getProvider()); |
| if (w == null) { |
| w = new ArrayList<Wire>(); |
| invertedWires.put(wire.getProvider(), w); |
| } |
| w.add(wire); |
| } |
| } |
| final Map<Resource, Wiring> wiring = new HashMap<Resource, Wiring>(); |
| for (Resource res : wires.keySet()) { |
| wiring.put(res, new SimpleWiring(res, wires, invertedWires)); |
| } |
| // Resolve the new resource |
| Map<Resource, List<Wire>> tempWires = resolver.resolve(new ResolveContext() { |
| @Override |
| public Collection<Resource> getMandatoryResources() { |
| return Collections.singleton(resource); |
| } |
| |
| @Override |
| public Collection<Resource> getOptionalResources() { |
| return context.getOptionalResources(); |
| } |
| |
| @Override |
| public List<Capability> findProviders(Requirement requirement) { |
| return context.findProviders(requirement); |
| } |
| |
| @Override |
| public int insertHostedCapability(List<Capability> capabilities, HostedCapability hostedCapability) { |
| return context.insertHostedCapability(capabilities, hostedCapability); |
| } |
| |
| @Override |
| public boolean isEffective(Requirement requirement) { |
| return context.isEffective(requirement); |
| } |
| |
| @Override |
| public Map<Resource, Wiring> getWirings() { |
| return wiring; |
| } |
| }); |
| // Merge wiring |
| wires.putAll(tempWires); |
| } |
| |
| return wires; |
| } |
| |
| private class SimpleWiring implements Wiring { |
| final Resource resource; |
| final Map<Resource, List<Wire>> wires; |
| final Map<Resource, List<Wire>> invertedWires; |
| List<Capability> resourceCapabilities; |
| List<Requirement> resourceRequirements; |
| |
| private SimpleWiring(Resource resource, Map<Resource, List<Wire>> wires, Map<Resource, List<Wire>> invertedWires) { |
| this.resource = resource; |
| this.wires = wires; |
| this.invertedWires = invertedWires; |
| } |
| |
| public List<Capability> getResourceCapabilities(String namespace) { |
| if (resourceCapabilities == null) { |
| resourceCapabilities = new ArrayList<Capability>(); |
| for (Wire wire : invertedWires.get(resource)) { |
| if (!resourceCapabilities.contains(wire.getCapability())) { |
| resourceCapabilities.add(wire.getCapability()); |
| } |
| } |
| } |
| if (namespace != null) { |
| List<Capability> caps = new ArrayList<Capability>(); |
| for (Capability cap : resourceCapabilities) { |
| if (namespace.equals(cap.getNamespace())) { |
| caps.add(cap); |
| } |
| } |
| return caps; |
| } |
| return resourceCapabilities; |
| } |
| |
| public List<Requirement> getResourceRequirements(String namespace) { |
| if (resourceRequirements == null) { |
| resourceRequirements = new ArrayList<Requirement>(); |
| for (Wire wire : wires.get(resource)) { |
| if (!resourceRequirements.contains(wire.getRequirement())) { |
| resourceRequirements.add(wire.getRequirement()); |
| } |
| } |
| } |
| if (namespace != null) { |
| List<Requirement> reqs = new ArrayList<Requirement>(); |
| for (Requirement req : resourceRequirements) { |
| if (namespace.equals(req.getNamespace())) { |
| reqs.add(req); |
| } |
| } |
| return reqs; |
| } |
| return resourceRequirements; |
| } |
| |
| public List<Wire> getProvidedResourceWires(String namespace) { |
| List<Wire> providedWires = invertedWires.get(resource); |
| if (namespace != null) { |
| List<Wire> wires = new ArrayList<Wire>(); |
| for (Wire wire : providedWires) { |
| if (namespace.equals(wire.getRequirement().getNamespace())) { |
| wires.add(wire); |
| } |
| } |
| return wires; |
| } |
| return providedWires; |
| } |
| |
| public List<Wire> getRequiredResourceWires(String namespace) { |
| List<Wire> requiredWires = wires.get(resource); |
| if (namespace != null) { |
| List<Wire> wires = new ArrayList<Wire>(); |
| for (Wire wire : requiredWires) { |
| if (namespace.equals(wire.getCapability().getNamespace())) { |
| wires.add(wire); |
| } |
| } |
| return wires; |
| } |
| return requiredWires; |
| } |
| |
| public Resource getResource() { |
| return resource; |
| } |
| } |
| |
| public Map<Resource, List<Wire>> resolveDynamic(ResolveContext context, |
| Wiring hostWiring, Requirement dynamicRequirement) throws ResolutionException |
| { |
| throw new UnsupportedOperationException(); |
| } |
| } |