| /* |
| * 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; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.osgi.framework.Version; |
| import org.osgi.framework.namespace.BundleNamespace; |
| import org.osgi.framework.namespace.IdentityNamespace; |
| import org.osgi.framework.namespace.PackageNamespace; |
| import org.osgi.resource.Capability; |
| import org.osgi.resource.Namespace; |
| import org.osgi.resource.Requirement; |
| import org.osgi.resource.Resource; |
| |
| public class Util |
| { |
| public static String getSymbolicName(Resource resource) |
| { |
| List<Capability> caps = resource.getCapabilities(null); |
| for (Capability cap : caps) |
| { |
| if (cap.getNamespace().equals(IdentityNamespace.IDENTITY_NAMESPACE)) |
| { |
| return cap.getAttributes().get(IdentityNamespace.IDENTITY_NAMESPACE).toString(); |
| } |
| } |
| return null; |
| } |
| |
| public static Version getVersion(Resource resource) |
| { |
| List<Capability> caps = resource.getCapabilities(null); |
| for (Capability cap : caps) |
| { |
| if (cap.getNamespace().equals(IdentityNamespace.IDENTITY_NAMESPACE)) |
| { |
| return (Version) |
| cap.getAttributes().get(IdentityNamespace.CAPABILITY_VERSION_ATTRIBUTE); |
| } |
| } |
| return null; |
| } |
| |
| public static boolean isFragment(Resource resource) |
| { |
| List<Capability> caps = resource.getCapabilities(null); |
| for (Capability cap : caps) |
| { |
| if (cap.getNamespace().equals(IdentityNamespace.IDENTITY_NAMESPACE)) |
| { |
| String type = (String) |
| cap.getAttributes().get(IdentityNamespace.CAPABILITY_TYPE_ATTRIBUTE); |
| return (type != null) && type.equals(IdentityNamespace.TYPE_FRAGMENT); |
| } |
| } |
| return false; |
| } |
| |
| public static boolean isOptional(Requirement req) |
| { |
| String resolution = req.getDirectives().get(Namespace.REQUIREMENT_RESOLUTION_DIRECTIVE); |
| return Namespace.RESOLUTION_OPTIONAL.equalsIgnoreCase(resolution); |
| } |
| |
| public static boolean isMultiple(Requirement req) |
| { |
| return Namespace.CARDINALITY_MULTIPLE.equals(req.getDirectives() |
| .get(Namespace.REQUIREMENT_CARDINALITY_DIRECTIVE)) && !isDynamic(req); |
| } |
| |
| public static boolean isDynamic(Requirement req) |
| { |
| return PackageNamespace.RESOLUTION_DYNAMIC.equals(req.getDirectives() |
| .get(Namespace.REQUIREMENT_RESOLUTION_DIRECTIVE)); |
| } |
| |
| public static boolean isReexport(Requirement req) |
| { |
| return BundleNamespace.VISIBILITY_REEXPORT.equals(req.getDirectives() |
| .get(BundleNamespace.REQUIREMENT_VISIBILITY_DIRECTIVE)); |
| } |
| |
| public static List<Requirement> getDynamicRequirements(List<Requirement> reqs) |
| { |
| List<Requirement> result = new ArrayList<Requirement>(); |
| if (reqs != null) |
| { |
| for (Requirement req : reqs) |
| { |
| String resolution = req.getDirectives() |
| .get(PackageNamespace.REQUIREMENT_RESOLUTION_DIRECTIVE); |
| if ((resolution != null) |
| && resolution.equals(PackageNamespace.RESOLUTION_DYNAMIC)) |
| { |
| result.add(req); |
| } |
| } |
| } |
| return result; |
| } |
| } |