repository/conf/sample/synapse_sample_6.xml

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<synapse xmlns="http://ws.apache.org/ns/synapse">

    <!-- illustration of various mediators : header, in and out mediators -->
    <rules>
        <!-- the in mediator applies only to 'incoming' messages (requests) into synapse -->
        <in>
            <filter source="//m0:getQuote/m0:request/m0:symbol" regex="IBM"
                    xmlns:m0="http://services.samples/xsd">
                <!-- set the message header for the 'To' EPR to the supplied value -->
                <header name="To"
                        value="http://localhost:9000/axis2/services/SimpleStockQuoteService1"/>
                <send/>
            </filter>

            <!-- drop (i.e. abort processing of) any other messages -->
            <drop/>
        </in>

        <!-- the out mediator applies only to 'outgoing' messages (responses) from synapse -->
        <out>
            <!-- display a log message at the time a response passes through synapse -->
            <log level="custom">
                <property name="message" value="sending back the response"/>
            </log>

            <send/>
        </out>
    </rules>

</synapse>