| /* |
| * 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.connect.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.connect.felix.framework.capabilityset.SimpleFilter; |
| import org.apache.felix.connect.felix.framework.util.Util; |
| 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 List<List<String>> m_includeFilter; |
| private final List<List<String>> m_excludeFilter; |
| 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.EMPTY_LIST; |
| 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; |
| |
| value = m_dirs.get(Constants.INCLUDE_DIRECTIVE); |
| if (value != null) |
| { |
| List<String> filters = Util.parseDelimitedString(value, ","); |
| m_includeFilter = new ArrayList<List<String>>(filters.size()); |
| for (int filterIdx = 0; filterIdx < filters.size(); filterIdx++) |
| { |
| List<String> substrings = SimpleFilter.parseSubstring(filters.get(filterIdx)); |
| m_includeFilter.add(substrings); |
| } |
| } |
| else |
| { |
| m_includeFilter = null; |
| } |
| |
| value = m_dirs.get(Constants.EXCLUDE_DIRECTIVE); |
| if (value != null) |
| { |
| List<String> filters = Util.parseDelimitedString(value, ","); |
| m_excludeFilter = new ArrayList<List<String>>(filters.size()); |
| for (int filterIdx = 0; filterIdx < filters.size(); filterIdx++) |
| { |
| List<String> substrings = SimpleFilter.parseSubstring(filters.get(filterIdx)); |
| m_excludeFilter.add(substrings); |
| } |
| } |
| else |
| { |
| m_excludeFilter = null; |
| } |
| |
| Set<String> mandatory = Collections.EMPTY_SET; |
| value = m_dirs.get(Constants.MANDATORY_DIRECTIVE); |
| if (value != null) |
| { |
| List<String> names = Util.parseDelimitedString(value, ","); |
| mandatory = new HashSet<String>(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; |
| } |
| |
| public boolean isIncluded(String name) |
| { |
| if ((m_includeFilter == null) && (m_excludeFilter == null)) |
| { |
| return true; |
| } |
| |
| // Get the class name portion of the target class. |
| String className = Util.getClassName(name); |
| |
| // If there are no include filters then all classes are included |
| // by default, otherwise try to find one match. |
| boolean included = (m_includeFilter == null); |
| for (int i = 0; |
| (!included) && (m_includeFilter != null) && (i < m_includeFilter.size()); |
| i++) |
| { |
| included = SimpleFilter.compareSubstring(m_includeFilter.get(i), className); |
| } |
| |
| // If there are no exclude filters then no classes are excluded |
| // by default, otherwise try to find one match. |
| boolean excluded = false; |
| for (int i = 0; |
| (!excluded) && (m_excludeFilter != null) && (i < m_excludeFilter.size()); |
| i++) |
| { |
| excluded = SimpleFilter.compareSubstring(m_excludeFilter.get(i), className); |
| } |
| return included && !excluded; |
| } |
| |
| @Override |
| public String toString() |
| { |
| if (m_revision == null) |
| { |
| return m_attrs.toString(); |
| } |
| return "[" + m_revision + "] " + m_namespace + "; " + m_attrs; |
| } |
| } |