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[CONF] Apache Camel > Context

confluence Fri, 19 Oct 2012 04:57:25 -0700

Context

Comment edited by Robert Stepanek :

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Following up my mail exchange with Willem on the camel-user mailing list (http://camel.465427.n5.nabble.com/Context-component-not-found-td5721236.html) here is a suggested update to this page:

Depends-on and 'No component found with scheme: context'

When you declare your route using the context component you may encounter the following exception during route construction:

No component found with scheme: context

Make sure your application correctly imports the camel-context component as described above. If the error message remains, this can mean that Camel needs a hint on route dependencies. Use the depends-on attribute on the camel context.


E.g. construction of the following route declared in XML will fail:

<camel:camelContext id="mainCamelContext">
    <camel:route>
        <camel:from uri="jetty:http://localhost:9090/foo"/>
        <camel:to uri="context:fooCamelContext:foo.in"/>
    </camel:route>
</camel:camelContext>

<camel:camelContext id="fooCamelContext" streamCache="true" xmlns="http://camel.apache.org/schema/spring">
    <camel:route>
        <camel:from uri="direct:foo.in"/>
        <camel:to uri="log:com.local.foo"/>
    </camel:route>
</camel:camelContext>



Setting the depends-on attribute on mainCamelContext will resolve this (look at the first line of the mainCamelContext declaration):


<camel:camelContext id="mainCamelContext" depends-on="fooCamelContext">
    <camel:route>
        <camel:from uri="jetty:http://localhost:9090/foo"/>
        <camel:to uri="context:fooCamelContext:foo.in"/>
    </camel:route>
</camel:camelContext>

<camel:camelContext id="fooCamelContext" streamCache="true" xmlns="http://camel.apache.org/schema/spring">
    <camel:route>
        <camel:from uri="direct:foo.in"/>
        <camel:to uri="log:com.local.foo"/>
    </camel:route>
</camel:camelContext>

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