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From Claus Ibsen <claus.ib...@gmail.com>
Subject Re: Velocity without java
Date Mon, 05 Dec 2011 08:40:44 GMT
Hi

You can use xpath to grab the values you want to use in the velocity
template, and set them as headers.

<setHeader headerName="foo"><xpath>/foo/text()</xpath></setHeader>

Then you can access the ${header.foo} from the velocity template.

Mind that when you use xpath and the XML has namespaces, then the
xpath expression must use those namespaces as well.
It can be a bit tricky to get the xpath expression working.

See examples here:
http://camel.apache.org/xpath


On Fri, Dec 2, 2011 at 7:46 PM, MichaelAtSAG <mebevilacqua@gmail.com> wrote:
> The Apache Camel example for Velocity using Java code to implement the logic.
> Is there an example available that does not use java?
>
> We are trying to use a Spring XML approach and cannot figure out how to
> connect the message properties into the velocity template.
>
> -Velocity template:-
>
> Dear Purchaser,
>
> We have an ${headers.eventtype} situation. We need
> ${body.DesiredInventoryLevel} piece(s) for part number ${body.ItemID}.
>
> Please review this situation.
>
>
>
> -Message:-
> <?xml version="1.0" encoding="UTF-8"?>
> <evt:Event xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>        xmlns:evt="http://namespaces.xyz.com/EDA/Event"
>        xmlns:pay="http://namespaces.xyz.com/EDA/WebM/Sample/InventoryMgmt/1.0">
>    <evt:Body>
>        <pay:PartInventoryShortage>
>            <pay:Part>
>                <pay:ItemID>ABC123</pay:ItemID>
>                <pay:ItemName>Widget for thingy</pay:ItemName>
>                <pay:Model>ACME </pay:Model>
>                <pay:Color>Grey</pay:Color>
>                <pay:Shape>Oval</pay:Shape>
>            </pay:Part>
>            <pay:InventoryLevel>5</pay:InventoryLevel>
>            <pay:DesiredInventoryLevel>45</pay:DesiredInventoryLevel>
>            <pay:SupplierInventoryLevel>28</pay:SupplierInventoryLevel>
>        </pay:PartInventoryShortage>
>    </evt:Body>
> </evt:Event>
>
> -Content file -
>
> <?xml version="1.0" encoding="UTF-8" standalone="no"?>
> <beans xmlns="http://www.springframework.org/schema/beans"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>        xsi:schemaLocation="        http://www.springframework.org/schema/beans
> http://www.springframework.org/schema/beans/spring-beans.xsd
> http://camel.apache.org/schema/spring
> http://camel.apache.org/schema/spring/camel-spring.xsd">
>
>        <camelContext xmlns="http://camel.apache.org/schema/spring" id="camel"
>                xmlns:evt="http://namespaces.xyz.com/EDA/Event">
>
>                <route id="Announcer" startupOrder="3">
>                        <from uri="file:src/data?noop=true" />
>                        <setHeader headerName="eventtype">
>                                <xpath>/evt:Event/evt:Header/evt:Type</xpath>
>                        </setHeader>
>                        <choice>
>                                <when>
>                                        <language language="xpath">$eventtype
=
>
> '{http://namespaces.xyz.com/EDA/WebM/Sample/InventoryMgmt/1.0}PartInventoryShortage'
>                                        </language>
>                                        <log message="Announce
PartInventoryShortage(b): file - &gt;
> jms:InvMgmt" />
>                                        <to uri="velocity:file:src/main/resources/email.vm"
/>
>                                        <log message="Announce
PartInventoryShortage(a): file - &gt; email" />
>
>                                        <to uri="outputToScreen"
/>
>                                </when>
>                        </choice>
>                </route>
>        </camelContext>
> </beans>
>
>
> How do I connect the message properties with the velocity template? Do I
> need to set header properties in the Camel context file? I did this for
> routing logic, yet the header element shows like this:
>
> We have an *com.sun.org.apache.xml.internal.dtm.ref.DTMNodeList@4e39f16f*
> situation.
>
>
> --
> View this message in context: http://camel.465427.n5.nabble.com/Velocity-without-java-tp5042886p5042886.html
> Sent from the Camel - Users mailing list archive at Nabble.com.



-- 
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/

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