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/*
* 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.resolver;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.osgi.framework.namespace.ExecutionEnvironmentNamespace;
import org.osgi.framework.namespace.HostNamespace;
import org.osgi.framework.namespace.IdentityNamespace;
import org.osgi.resource.Capability;
import org.osgi.resource.Requirement;
import org.osgi.resource.Resource;
class WrappedResource implements Resource
{
private final Resource m_host;
private final List<Resource> m_fragments;
private List<Capability> m_cachedCapabilities = null;
private List<Requirement> m_cachedRequirements = null;
public WrappedResource(Resource host, List<Resource> fragments)
{
m_host = host;
m_fragments = fragments;
}
public Resource getDeclaredResource()
{
return m_host;
}
public List<Resource> getFragments()
{
return m_fragments;
}
public List<Capability> getCapabilities(String namespace)
{
if (m_cachedCapabilities == null)
{
List<Capability> caps = new ArrayList<Capability>();
// Wrap host capabilities.
for (Capability cap : m_host.getCapabilities(namespace))
{
caps.add(new WrappedCapability(this, cap));
}
// Wrap fragment capabilities.
if (m_fragments != null)
{
for (Resource fragment : m_fragments)
{
for (Capability cap : fragment.getCapabilities(namespace))
{
// Filter out identity capabilities, since they
// are not part of the fragment payload.
if (!cap.getNamespace()
.equals(IdentityNamespace.IDENTITY_NAMESPACE))
{
caps.add(new WrappedCapability(this, cap));
}
}
}
}
m_cachedCapabilities = Collections.unmodifiableList(caps);
}
return m_cachedCapabilities;
}
public List<Requirement> getRequirements(String namespace)
{
if (m_cachedRequirements == null)
{
List<Requirement> reqs = new ArrayList<Requirement>();
// Wrap host requirements.
for (Requirement req : m_host.getRequirements(null))
{
reqs.add(new WrappedRequirement(this, req));
}
// Wrap fragment requirements.
if (m_fragments != null)
{
for (Resource fragment : m_fragments)
{
for (Requirement req : fragment.getRequirements(null))
{
// Filter out host and execution environment requirements,
// since they are not part of the fragment payload.
if (!req.getNamespace().equals(HostNamespace.HOST_NAMESPACE)
&& !req.getNamespace().equals(
ExecutionEnvironmentNamespace.EXECUTION_ENVIRONMENT_NAMESPACE))
{
reqs.add(new WrappedRequirement(this, req));
}
}
}
}
m_cachedRequirements = Collections.unmodifiableList(reqs);
}
return m_cachedRequirements;
}
public String toString()
{
return m_host.toString();
}
}
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