trunk/examples/camel-example-aggregate/src/main/resources/META-INF/spring/camel-context.xml

<?xml version="1.0" encoding="UTF-8"?>
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    Licensed to the Apache Software Foundation (ASF) under one or more
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    this work for additional information regarding copyright ownership.
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    http://www.apache.org/licenses/LICENSE-2.0

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<!-- START SNIPPET: e1 -->
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:camel="http://camel.apache.org/schema/spring"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">

    <!-- this is our aggregation strategy which can aggregate the numbers received as input -->
    <bean id="myStrategy" class="org.apache.camel.example.NumberAggregationStrategy"/>

    <!-- this is the persistent repository to store aggregated messages -->
    <bean id="myRepo" class="org.apache.camel.component.hawtdb.HawtDBAggregationRepository">
        <!-- use data/hawtdb.dat as the persistent store -->
        <property name="persistentFileName" value="data/hawtdb.dat"/>
        <!-- the repo must have an unique name,
             as you can have multiple repositories in the same file -->
        <property name="repositoryName" value="myCoolRepo"/>
        <!-- the repo file segment size -->
        <property name="bufferSize" value="602400"/>
    </bean>

    <!-- this is the camel route which asks for input and aggregates the number -->
    <camelContext id="camel" xmlns="http://camel.apache.org/schema/spring">
        <route>
            <!-- ask user to enter a number -->
            <from uri="stream:in?promptMessage=Enter a number to be added (use STOP to end, and ctrl+c to shutdown Camel): &amp;promptDelay=1000"/>
            <!-- aggregate the input, use eagerCheckCompletion to let the completionPredicate easily detect the STOP command -->
            <aggregate strategyRef="myStrategy" aggregationRepositoryRef="myRepo" eagerCheckCompletion="true">
                <!-- aggregate all messages into the same group -->
                <correlationExpression><constant>true</constant></correlationExpression>
                <!-- if end user enters STOP then complete the aggregation -->
                <completionPredicate><simple>${body} contains 'STOP'</simple></completionPredicate>
                <!-- and transform the completed message to a human readble -->
                <transform><simple>The result is: ${body}</simple></transform>
                <!-- which is printed on the console -->
                <to uri="stream:out"/>
            </aggregate>
        </route>

    </camelContext>

</beans>
<!-- END SNIPPET: e1 -->