Mule Esper Example: Comparing to Drools

mule-config.xml

<flow name="processStockTicks">
        <composite-source>
            <inbound-endpoint ref="stockTick"/>
            <ajax:inbound-endpoint channel="/services/cepExample/thresholdChange"/>
        </composite-source>
        <all>
            <ajax:outbound-endpoint channel="/services/cepExample/stockTick"/>
            <esper:send eventPayload-ref="#[payload:]"/>
        </all>
    </flow> 

<flow name="sendAlerts">
        <esper:listen statement="
                    select symbol,price,(Math.abs(first(price) - last(price)) / first(price)) * 100.0 as percentChange
                    from StockTick.win:time(2 min) group by symbol
                    having (Math.abs(first(price) - last(price)) / first(price)) * 100.0 > 7.0 "/>
        <vm:outbound-endpoint path="alerts.out"/>
 </flow>