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/*
 * Copyright (c) OSGi Alliance (2012). All Rights Reserved.
 *
 * 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.resolver;

import java.util.Map;
import org.osgi.framework.namespace.PackageNamespace;
import org.osgi.resource.Capability;
import org.osgi.resource.Resource;
import org.osgi.service.resolver.HostedCapability;

public class WrappedCapability implements HostedCapability
{
    private final Resource m_host;
    private final Capability m_cap;

    public WrappedCapability(Resource host, Capability cap)
    {
        m_host = host;
        m_cap = cap;
    }

    @Override
    public boolean equals(Object obj)
    {
        if (obj == null)
        {
            return false;
        }
        if (getClass() != obj.getClass())
        {
            return false;
        }
        final WrappedCapability other = (WrappedCapability) obj;
        if (m_host != other.m_host && (m_host == null || !m_host.equals(other.m_host)))
        {
            return false;
        }
        if (m_cap != other.m_cap && (m_cap == null || !m_cap.equals(other.m_cap)))
        {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode()
    {
        int hash = 7;
        hash = 37 * hash + (m_host != null ? m_host.hashCode() : 0);
        hash = 37 * hash + (m_cap != null ? m_cap.hashCode() : 0);
        return hash;
    }

    public Capability getDeclaredCapability()
    {
        return m_cap;
    }

    public Resource getResource()
    {
        return m_host;
    }

    public String getNamespace()
    {
        return m_cap.getNamespace();
    }

    public Map getDirectives()
    {
        return m_cap.getDirectives();
    }

    public Map getAttributes()
    {
        return m_cap.getAttributes();
    }

// TODO: RFC-112 - Need impl-specific type.
//    public List getUses()
//    {
//        return m_cap.getUses();
//    }

    @Override
    public String toString()
    {
        if (m_host == null)
        {
            return getAttributes().toString();
        }
        if (getNamespace().equals(PackageNamespace.PACKAGE_NAMESPACE))
        {
            return "[" + m_host + "] "
                + getNamespace()
                + "; "
                + getAttributes().get(PackageNamespace.PACKAGE_NAMESPACE);
        }
        return "[" + m_host + "] " + getNamespace() + "; " + getAttributes();
    }
}