001    /*
002     * Copyright (c) 2005 Stephen J. McConnell
003     *
004     * Licensed  under the  Apache License,  Version 2.0  (the "License");
005     * you may not use  this file  except in  compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *   http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed  under the  License is distributed on an "AS IS" BASIS,
012     * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
013     * implied.
014     *
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package net.dpml.component;
020    
021    import java.rmi.Remote;
022    import java.rmi.RemoteException;
023    
024    import net.dpml.lang.Version;
025    
026    
027    /**
028     * The Component interface is implemented by objects that handle the runtime
029     * state of a component instance.
030     *
031     * @author <a href="http://www.dpml.net">Digital Product Meta Library</a>
032     * @version 1.0.4
033     */
034    public interface Service extends Remote
035    {
036       /**
037        * Return the service class.
038        * @return the service class
039        * @exception RemoteException if a remoting I/O error occurs
040        */
041        Class getServiceClass() throws RemoteException;
042        
043       /**
044        * Return the service version.
045        * @return the version
046        * @exception RemoteException if a remoting I/O error occurs
047        */
048        Version getVersion() throws RemoteException;
049        
050    }
051