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/*
 * Fabric3
 * Copyright (c) 2009-2011 Metaform Systems
 *
 * Fabric3 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version, with the
 * following exception:
 *
 * Linking this software statically or dynamically with other
 * modules is making a combined work based on this software.
 * Thus, the terms and conditions of the GNU General Public
 * License cover the whole combination.
 *
 * As a special exception, the copyright holders of this software
 * give you permission to link this software with independent
 * modules to produce an executable, regardless of the license
 * terms of these independent modules, and to copy and distribute
 * the resulting executable under terms of your choice, provided
 * that you also meet, for each linked independent module, the
 * terms and conditions of the license of that module. An
 * independent module is a module which is not derived from or
 * based on this software. If you modify this software, you may
 * extend this exception to your version of the software, but
 * you are not obligated to do so. If you do not wish to do so,
 * delete this exception statement from your version.
 *
 * Fabric3 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the
 * GNU General Public License along with Fabric3.
 * If not, see .
 *
 * ----------------------------------------------------
 *
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 *
 */
package org.fabric3.spi.invocation;

import java.io.Serializable;

/**
 * Represents a request, response, or exception flowing through a wire.
 *
 * @version $Rev: 9763 $ $Date: 2011-01-03 00:48:06 +0000 (Mon, 03 Jan 2011) $
 */
public interface Message extends Serializable {

    /**
     * Returns the body of the message, which will be the payload or parameters associated with the wire.
     *
     * @return the body of the message
     */
    Object getBody();

    /**
     * Sets the body of the message.
     *
     * @param body the body of the message
     */
    void setBody(Object body);

    /**
     * Set the message body with a fault object. After this method is called, isFault() returns true.
     *
     * @param fault The fault object represents an exception
     */
    void setBodyWithFault(Object fault);

    /**
     * Determines if the message represents a fault/exception
     *
     * @return true if the message body is a fault object, false if the body is a normal payload
     */
    boolean isFault();

    /**
     * Returns the context associated with this invocation.
     *
     * @return the context associated with this invocation
     */
    WorkContext getWorkContext();

    /**
     * Sets the context associated with this invocation.
     *
     * @param workContext the context associated with this invocation
     */
    void setWorkContext(WorkContext workContext);

}