1 /* ==================================================================== 2 * 3 * The ObjectStyle Group Software License, version 1.1 4 * ObjectStyle Group - http://objectstyle.org/ 5 * 6 * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors 7 * of the software. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, if any, 22 * must include the following acknowlegement: 23 * "This product includes software developed by independent contributors 24 * and hosted on ObjectStyle Group web site (http://objectstyle.org/)." 25 * Alternately, this acknowlegement may appear in the software itself, 26 * if and wherever such third-party acknowlegements normally appear. 27 * 28 * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse 29 * or promote products derived from this software without prior written 30 * permission. For written permission, email 31 * "andrus at objectstyle dot org". 32 * 33 * 5. Products derived from this software may not be called "ObjectStyle" 34 * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their 35 * names without prior written permission. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals and hosted on ObjectStyle Group web site. For more 53 * information on the ObjectStyle Group, please see 54 * <http://objectstyle.org/>. 55 */ 56 package org.objectstyle.cayenne.distribution; 57 58 import java.io.Serializable; 59 60 /** 61 * Represents a two-way message sent by Cayenne client to Cayenne service. This interface 62 * provides a mechanism for a remote message receiver to process message without knowing 63 * much about its actual implementation. Concrete messages may also define methods for the 64 * sender, but as those have signitures specific to implementation, they are not described 65 * by this interface. 66 * 67 * @since 1.2 68 * @author Andrus Adamchik 69 * @see org.objectstyle.cayenne.distribution.ClientMessageHandler 70 */ 71 public interface ClientMessage extends Serializable { 72 73 /** 74 * Invokes an appropriate method on ClientMessageHandler. This is a server-side 75 * "visit" method called by a message receiver. 76 */ 77 Object onReceive(ClientMessageHandler handler); 78 }