/*
* 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.aries.subsystem.util.felix;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.apache.aries.subsystem.obr.internal.AbstractRequirement;
import org.apache.aries.subsystem.obr.internal.NamespaceTranslator;
import org.osgi.framework.namespace.BundleNamespace;
import org.osgi.resource.Capability;
import org.osgi.resource.Namespace;
import org.osgi.resource.Resource;
public class FelixRequirementAdapter extends AbstractRequirement {
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;
directives = computeDirectives();
}
public Map<String, Object> getAttributes() {
return Collections.emptyMap();
}
public Map<String, String> getDirectives() {
return directives;
}
public String getNamespace() {
return NamespaceTranslator.translate(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 = new HashMap<String, String>(3);
/* (1) The Felix OBR specific "mandatory:<*" syntax must be stripped out of the filter.
* (2) The namespace must be translated.
*/
String namespace = getNamespace();
String filter = requirement.getFilter()
.replaceAll("\\(mandatory\\:\\<\\*[^\\)]*\\)", "")
.replaceAll("\\(service\\=[^\\)]*\\)", "")
.replaceAll("objectclass", "objectClass")
.replaceAll(requirement.getName() + '=', namespace + '=');
if (BundleNamespace.BUNDLE_NAMESPACE.equals(namespace)) {
filter = filter.replaceAll("symbolicname", namespace)
.replaceAll("version", BundleNamespace.CAPABILITY_BUNDLE_VERSION_ATTRIBUTE);
}
result.put(Namespace.REQUIREMENT_FILTER_DIRECTIVE, filter);
result.put(Namespace.REQUIREMENT_RESOLUTION_DIRECTIVE, requirement.isOptional() ? Namespace.RESOLUTION_OPTIONAL : Namespace.RESOLUTION_MANDATORY);
result.put(Namespace.REQUIREMENT_CARDINALITY_DIRECTIVE, requirement.isMultiple() ? Namespace.CARDINALITY_MULTIPLE : Namespace.CARDINALITY_SINGLE);
return Collections.unmodifiableMap(result);
}
}