| /* |
| * 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.framework.wiring; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| import org.apache.felix.framework.util.Util; |
| import org.apache.felix.framework.util.manifestparser.ManifestParser; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.wiring.BundleCapability; |
| import org.osgi.framework.wiring.BundleRevision; |
| |
| public class BundleCapabilityImpl implements BundleCapability |
| { |
| public static final String VERSION_ATTR = "version"; |
| |
| private final BundleRevision m_revision; |
| private final String m_namespace; |
| private final Map<String, String> m_dirs; |
| private final Map<String, Object> m_attrs; |
| private final List<String> m_uses; |
| private final Set<String> m_mandatory; |
| |
| public BundleCapabilityImpl(BundleRevision revision, String namespace, |
| Map<String, String> dirs, Map<String, Object> attrs) |
| { |
| m_namespace = namespace; |
| m_revision = revision; |
| m_dirs = Util.newImmutableMap(dirs); |
| m_attrs = Util.newImmutableMap(attrs); |
| |
| // Find all export directives: uses, mandatory, include, and exclude. |
| |
| List<String> uses = Collections.emptyList(); |
| String value = m_dirs.get(Constants.USES_DIRECTIVE); |
| if (value != null) |
| { |
| // Parse these uses directive. |
| StringTokenizer tok = new StringTokenizer(value, ","); |
| uses = new ArrayList<>(tok.countTokens()); |
| while (tok.hasMoreTokens()) |
| { |
| uses.add(tok.nextToken().trim()); |
| } |
| } |
| m_uses = uses; |
| |
| Set<String> mandatory = Collections.emptySet(); |
| value = m_dirs.get(Constants.MANDATORY_DIRECTIVE); |
| if (value != null) |
| { |
| List<String> names = ManifestParser.parseDelimitedString(value, ","); |
| mandatory = new HashSet<>(names.size()); |
| for (String name : names) |
| { |
| // If attribute exists, then record it as mandatory. |
| if (m_attrs.containsKey(name)) |
| { |
| mandatory.add(name); |
| } |
| // Otherwise, report an error. |
| else |
| { |
| throw new IllegalArgumentException( |
| "Mandatory attribute '" + name + "' does not exist."); |
| } |
| } |
| } |
| m_mandatory = mandatory; |
| } |
| |
| public BundleRevision getResource() |
| { |
| return m_revision; |
| } |
| |
| public BundleRevision getRevision() |
| { |
| return m_revision; |
| } |
| |
| public String getNamespace() |
| { |
| return m_namespace; |
| } |
| |
| public Map<String, String> getDirectives() |
| { |
| return m_dirs; |
| } |
| |
| public Map<String, Object> getAttributes() |
| { |
| return m_attrs; |
| } |
| |
| public boolean isAttributeMandatory(String name) |
| { |
| return !m_mandatory.isEmpty() && m_mandatory.contains(name); |
| } |
| |
| public List<String> getUses() |
| { |
| return m_uses; |
| } |
| |
| @Override |
| public String toString() |
| { |
| if (m_revision == null) |
| { |
| return m_attrs.toString(); |
| } |
| return "[" + m_revision + "] " + m_namespace + "; " + m_attrs; |
| } |
| } |