# SynapseMessageConverter.java

    /**
     *  Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
     *
     *  WSO2 Inc. licenses this file to you 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.
     */

    package org.apache.synapse.commons.builders;

    import org.apache.axiom.om.OMElement;
    import org.apache.axis2.context.MessageContext;
    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;

    import java.io.OutputStream;

    public abstract class SynapseMessageConverter implements MessageConverter {
        private static final Log logger = LogFactory.getLog(SynapseMessageConverter.class.getName());

        public void convert(OMElement element, OutputStream outputStream, String fromMediaType,
                            String toMediaType) {
            logger.warn("Must be overridden.");
        }

        public void convert(MessageContext messageContext, OutputStream outputStream,
                            String fromMediaType, String toMediaType) {
            logger.warn("Must be overridden.");
        }

        public StringBuilder convert(OMElement element, String fromMediaType, String toMediaType) {
            logger.warn("Must be overridden.");
            return new StringBuilder("");
        }

        public StringBuilder convert(MessageContext messageContext, String fromMediaType,
                                     String toMediaType) {
            logger.warn("Must be overridden.");
            return new StringBuilder("");
        }
    }