/*
* 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.core.internal;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.aries.util.filesystem.IFile;
import org.osgi.resource.Capability;
import org.osgi.resource.Requirement;
import org.osgi.resource.Resource;
import org.osgi.service.repository.RepositoryContent;
public class FileResource implements Resource, RepositoryContent {
private final IFile file;
private volatile Map<String, List<Capability>> capabilities ;
public FileResource(IFile file) {
this.file = file;
}
@Override
public List<Capability> getCapabilities(String namespace) {
Map<String, List<Capability>> namespace2capabilities = capabilities;
if (namespace2capabilities == null) {
return Collections.emptyList();
}
List<Capability> caps;
if (namespace == null) {
caps = new ArrayList<Capability>();
for (List<Capability> l : capabilities.values()) {
caps.addAll(l);
}
return Collections.unmodifiableList(caps);
}
caps = namespace2capabilities.get(namespace);
if (caps != null)
return Collections.unmodifiableList(caps);
else
return Collections.emptyList();
}
@Override
public List<Requirement> getRequirements(String namespace) {
return Collections.emptyList();
}
public void setCapabilities(List<Capability> capabilities) {
Map<String, List<Capability>> m = new HashMap<String, List<Capability>>();
for (Capability c : capabilities) {
List<Capability> l = m.get(c.getNamespace());
if (l == null) {
l = new ArrayList<Capability>();
m.put(c.getNamespace(), l);
}
l.add(c);
}
this.capabilities = m;
}
@Override
public InputStream getContent() {
try {
return file.open();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}