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<document>
    <properties>
        <title>Apache Synapse - Sample 2</title>
    </properties>
    <body>
        <section name="Sample 2: CBR with Switch Case Mediator">
            <div class="xmlConf">&lt;definitions xmlns="http://ws.apache.org/ns/synapse"&gt;

    &lt;sequence name="main"&gt;
        &lt;switch source="//m0:getQuote/m0:request/m0:symbol" xmlns:m0="http://services.samples"&gt;
            &lt;case regex="IBM"&gt;
                &lt;!-- the property mediator sets a local property on the *current* message --&gt;
                &lt;property name="symbol" value="Great stock - IBM"/&gt;
            &lt;/case&gt;
            &lt;case regex="MSFT"&gt;
                &lt;property name="symbol" value="Are you sure? - MSFT"/&gt;
            &lt;/case&gt;
            &lt;default&gt;
                &lt;!-- it is possible to assign the result of an XPath expression as well --&gt;
                &lt;property name="symbol" expression="fn:concat('Normal Stock - ', //m0:getQuote/m0:request/m0:symbol)"/&gt;
            &lt;/default&gt;
        &lt;/switch&gt;
        &lt;log level="custom"&gt;
            &lt;!-- the get-property() XPath extension function allows the lookup of local message properties
                        as well as properties from the Axis2 or Transport contexts (i.e. transport headers) --&gt;
            &lt;property name="symbol" expression="get-property('symbol')"/&gt;
            &lt;!-- the get-property() function supports the implicit message headers To/From/Action/FaultTo/ReplyTo --&gt;
            &lt;property name="epr" expression="get-property('To')"/&gt;
        &lt;/log&gt;
        &lt;!-- Send the messages where they are destined to (i.e. the 'To' EPR of the message) --&gt;
        &lt;send/&gt;
    &lt;/sequence&gt;

&lt;/definitions&gt;</div>
            <subsection name="Objective">
                <p>
                    Introduction to the switch-case mediator and manipulating properties set on the
                    messages.
                </p>
            </subsection>
            <subsection name="Pre-requisites">
                <p>
                    <ul>
                        <li>
                            Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
                        </li>
                        <li>
                            Start Synapse using the configuration numbered 2 (repository/conf/sample/synapse_sample_2.xml)
                            <div class="command">
                                Unix/Linux: sh synapse.sh -sample 2<br/>
                                Windows: synapse.bat -sample 2
                            </div>
                        </li>
                    </ul>
                </p>
            </subsection>
            <subsection name="Executing the Client">
                <p>
                    Execute the sample Axis2 client in the smart client using different symbols
                    such as IBM, MSFT and SUN.
                </p>
                <div class="command">ant stockquote -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/ -Dsymbol=IBM</div>
                <div class="command">ant stockquote -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/ -Dsymbol=MSFT</div>
                <div class="command">ant stockquote -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/ -Dsymbol=SUN</div>

                <p>
                    When the symbol IBM is requested, viewing the mediation logs you will see that
                    the switch mediator's first case for 'IBM' is executed and a local property named
                    'symbol' is set to 'Great stock - IBM'. Subsequently this local property value
                    is looked up by the log mediator and logged using the 'get-property()' XPath
                    extension function.
                </p>
                <div class="consoleOutput">INFO LogMediator - symbol = Great stock - IBM, epr = http://localhost:9000/axis2/services/SimpleStockQuoteService</div>

                <p>
                    Similarly for the symbol 'MSFT' the second case statement in the switch mediator
                    will be executed which will result in the following log.
                </p>
                <div class="consoleOutput">INFO LogMediator - symbol = Are you sure? - MSFT, epr = http://localhost:9000/axis2/services/SimpleStockQuoteService</div>                
            </subsection>
        </section>
        <p><a href="../samples.html">Back to Catalog</a></p>
    </body>
</document>