[CONF] Apache Camel: XSLT (page edited)

Wed, 10 Dec 2008 02:42:35 -0800

Page Edited : CAMEL : XSLT

XSLT has been edited by Ramon Buckland (Dec 10, 2008).

(View changes)

Content:

XSLT

The xslt: component allows you to process a message using an XSLT template. This can be ideal when using Templating to generate respopnses for requests.

URI format

xslt:templateName

Where templateName is the classpath-local URI of the template to invoke; or the complete URL of the remote template. Refer to the Spring Documentation for more detail of the URI syntax



Here are some example URIs






 URI 
 Description 




 


xslt:com/acme/mytransform.xsl


 		
 refers to the file com/acme/mytransform.xsl on the classpath 




 


xslt:file:///foo/bar.xsl


 		
 refers to the file /foo/bar.xsl 




 


xslt:http://acme.com/cheese/foo.xsl


 		
 refers to the remote http resource 






Using XSLT endpoints



For example you could use something like





from("activemq:My.Queue").
  to("xslt:com/acme/mytransform.xsl");





To use a xslt template to forumulate a response for a message for InOut message exchanges (where there is a JMSReplyTo header).



If you want to use InOnly and consume the message and send it to another destination you could use





from("activemq:My.Queue").
  to("xslt:com/acme/mytransform.xsl").
  to("activemq:Another.Queue");





Getting Parameters into the XSLT to work with



By default, all headers are added as parameters which are available in the XSLT.

To do this you will need to declare the parameter so it is then 'useable'.





<setHeader headerName="myParam"><constant>42</constant></setHeader>
<to uri="xslt:MyTransform.xsl"/>





and the XSLT just needs to declare it at the top level for it to be available.





<xsl: ...... >

   <xsl:param name="myParam"/>
  
    <xsl:template ...>





Spring XML versions



To use the above examples in Spring XML you would use something like





<camelContext xmlns="http://activemq.apache.org/camel/schema/spring">
    <route>
      <from uri="activemq:My.Queue"/>
      <to uri="xslt:org/apache/camel/spring/processor/example.xsl"/>
      <to uri="activemq:Another.Queue"/>
    </route>
  </camelContext>





There is a test case along with its Spring XML if you want a concrete example.


Options






 Name 
 Default Value 
 Description 




 converter 
 null 
 Option to override default XmlConverter. Will lookup for the converter in the Registry. The provided converted must be of type org.apache.camel.converter.jaxp.XmlConverter. 






See Also

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