001    /*
002     * $Header: /cvshome/build/org.osgi.service.obr/src/org/osgi/service/obr/Requirement.java,v 1.4 2006/03/16 14:56:17 hargrave Exp $
003     *
004     * Copyright (c) OSGi Alliance (2006). All Rights Reserved.
005     *
006     * Licensed under the Apache License, Version 2.0 (the "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *      http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    // This document is an experimental draft to enable interoperability
020    // between bundle repositories. There is currently no commitment to 
021    // turn this draft into an official specification.  
022    package org.osgi.service.obr;
023    
024    /**
025     * A named requirement specifies the need for certain capabilities with the same
026     * name.
027     * 
028     * @version $Revision: 1.4 $
029     */
030    public interface Requirement
031    {
032    
033        /**
034         * Return the name of the requirement.
035         */
036        String getName();
037    
038        /**
039         * Return the filter.
040         * 
041         */
042        String getFilter();
043    
044        boolean isMultiple();
045    
046        boolean isOptional();
047    
048        boolean isExtend();
049    
050        String getComment();
051    
052        boolean isSatisfied(Capability capability);
053    }