THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Namespaces ns = new Namespaces("c", "http://acme.com/cheese");
from("direct:start").filter().
xpath("/c:person[@name='James']", ns).
to("mock:result");
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Using XML configuration
If you prefer to configure your routes in your Spring XML file then you can use XPath expressions as follows
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<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:foo="http://example.com/person"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://activemq.apache.org/camel/schema/spring http://activemq.apache.org/camel/schema/spring/camel-spring.xsd">
<camelContext id="camel" xmlns="http://activemq.apache.org/camel/schema/spring">
<route>
<from uri="direct:start"/>
<filter>
<xpath>/foo:person[@name='James']</xpath>
<to uri="mock:result"/>
</filter>
</route>
</camelContext>
</beans>
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Notice how we can reuse the namespace prefixes, foo in this case, in the XPath expression for easier namespace based XPath expressions!
Examples
Here is a simple example using an XPath expression as a predicate in a Message Filter
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