org.osgi.service.obr/src/main/java/org/osgi/service/obr/CapabilityProvider.java

/*
 * $Header: /cvshome/build/org.osgi.service.obr/src/org/osgi/service/obr/CapabilityProvider.java,v 1.3 2006/03/16 14:56:17 hargrave Exp $
 *
 * Copyright (c) OSGi Alliance (2006). 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.
 */

// This document is an experimental draft to enable interoperability
// between bundle repositories. There is currently no commitment to 
// turn this draft into an official specification.  
package org.osgi.service.obr;

/**
 * This service interface allows third parties to provide capabilities that are
 * present on the system but not encoded in the bundle's manifests. For example,
 * a capability provider could provide:
 * <ol>
 * <li>A Set of certificates</li>
 * <li>Dimensions of the screen</li>
 * <li>Amount of memory</li>
 * <li>...</li>
 * </ol>
 * 
 * @version $Revision: 1.3 $
 */
public interface CapabilityProvider
{
    /**
     * Return a set of capabilities.
     * 
     * These capabilities are considered part of the platform. Bundles can
     * require these capabilities during selection. All capabilities from
     * different providers are considered part of the platform.
     * 
     * @return Set of capabilities
     */
    Capability[] getCapabilities();
}