| /* |
| * Licensed 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.bundlerepository.impl; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.osgi.resource.Capability; |
| import org.osgi.resource.Namespace; |
| import org.osgi.resource.Requirement; |
| import org.osgi.resource.Resource; |
| |
| public class FelixRequirementAdapter implements Requirement |
| { |
| private final Map<String, String> directives; |
| private final org.apache.felix.bundlerepository.Requirement requirement; |
| private final Resource resource; |
| |
| public FelixRequirementAdapter(org.apache.felix.bundlerepository.Requirement requirement, Resource resource) |
| { |
| if (requirement == null) |
| throw new NullPointerException("Missing required parameter: requirement"); |
| if (resource == null) |
| throw new NullPointerException("Missing required parameter: resource"); |
| this.requirement = requirement; |
| this.resource = resource; |
| this.directives = computeDirectives(); |
| } |
| |
| public Map<String, Object> getAttributes() |
| { |
| return requirement.getAttributes(); |
| } |
| |
| public Map<String, String> getDirectives() |
| { |
| return directives; |
| } |
| |
| public String getNamespace() |
| { |
| return NamespaceTranslator.getOSGiNamespace(requirement.getName()); |
| } |
| |
| public Resource getResource() |
| { |
| return resource; |
| } |
| |
| public boolean matches(Capability capability) |
| { |
| return requirement.isSatisfied(new OSGiCapabilityAdapter(capability)); |
| } |
| |
| private Map<String, String> computeDirectives() |
| { |
| Map<String, String> result; |
| if (requirement.getDirectives() == null) |
| result = new HashMap<String, String>(); |
| else |
| result = new HashMap<String, String>(requirement.getDirectives()); |
| |
| /* |
| * (1) The Felix OBR specific "mandatory:<*" syntax must be stripped out |
| * of the filter. |
| * (2) service references removed |
| * (3) objectClass capitalised |
| * (4) The namespaces must be translated. |
| */ |
| String filter = requirement.getFilter().replaceAll("\\(mandatory\\:\\<\\*[^\\)]*\\)", ""). |
| replaceAll("objectclass", "objectClass"); |
| |
| for (String ns : NamespaceTranslator.getTranslatedFelixNamespaces()) |
| { |
| filter = filter.replaceAll("[(][ ]*" + ns + "[ ]*=", |
| "(" + NamespaceTranslator.getOSGiNamespace(ns) + "="); |
| } |
| result.put(Namespace.REQUIREMENT_FILTER_DIRECTIVE, filter); |
| |
| if (requirement.isOptional()) |
| result.put(Namespace.REQUIREMENT_RESOLUTION_DIRECTIVE, Namespace.RESOLUTION_OPTIONAL); |
| |
| if (requirement.isMultiple()) |
| result.put(Namespace.REQUIREMENT_CARDINALITY_DIRECTIVE, Namespace.CARDINALITY_MULTIPLE); |
| |
| return Collections.unmodifiableMap(result); |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (o == this) |
| return true; |
| if (!(o instanceof Requirement)) |
| return false; |
| Requirement c = (Requirement) o; |
| return c.getNamespace().equals(getNamespace()) && c.getAttributes().equals(getAttributes()) |
| && c.getDirectives().equals(getDirectives()) && c.getResource() != null ? c.getResource().equals(getResource()) |
| : getResource() == null; |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| int result = 17; |
| result = 31 * result + getNamespace().hashCode(); |
| result = 31 * result + getAttributes().hashCode(); |
| result = 31 * result + getDirectives().hashCode(); |
| result = 31 * result + (getResource() == null ? 0 : getResource().hashCode()); |
| return result; |
| } |
| |
| public String toString() |
| { |
| return resource + ":" + requirement; |
| } |
| } |