THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Where we use the xpath function concat to prefix the order name with foo-. In this case we have to specify that we want a String as result type so the concat function works.
Using XPath on Headers
Available as of Camel 2.11
Some users may have XML stored in a header. To apply an XPath to a header's value you can do this by defining the 'headerName' attribute.
In Blueprint DSL :
| Code Block | ||
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<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
xmlns:foo="http://example.com/person"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd">
<camelContext id="xpathHeaderNameTest" xmlns="http://camel.apache.org/schema/blueprint">
<route>
<from uri="direct:in"/>
<choice>
<when>
<xpath headerName="invoiceDetails">/invoice/@orderType = 'premium'</xpath>
<to uri="mock:premium"/>
</when>
<when>
<xpath headerName="invoiceDetails">/invoice/@orderType = 'standard'</xpath>
<to uri="mock:standard"/>
</when>
<otherwise>
<to uri="mock:unknown"/>
</otherwise>
</choice>
</route>
</camelContext>
</blueprint>
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Examples
Here is a simple example using an XPath expression as a predicate in a Message Filter
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