Node count in camel

[Deepthi <de...@gmail.com>]

Hi,

Is there a way to find number of nodes in a given xml in camel using spring.
For Eg: We have the following xml:
<order>
  <item>1</item>
  <item>2</item>
  <item>3</item>
</order>

I want to know the number of item tags in order tag and store it in header
name say itemCount.
I am using camel 2.8.0

Is this possible?

Thanks,
Deepthi



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Re: Node count in camel

[dalewking <da...@gmail.com>]

Michal Warecki wrote
> <setHeader headerName="itemCount">
>     
> <xpath resultType="java.lang.String">
> count(/order/item)
> </xpath>
> </setHeader>

Apparently the secret part of that is the resultType="java.lang.String".
With it, it works. Without it you get the very misleading:

org.apache.camel.builder.xml.InvalidXPathExpression - Invalid xpath:
count(/order/item)



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Re: Node count in camel

[Deepthi <de...@gmail.com>]

Thanks Michal.
This works.



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Re: Node count in camel

["michal.warecki" <mi...@gmail.com>]

If you want to store count result in header, why you use filtering?
This should work:

<setHeader headerName="itemCount">
    <xpath resultType="java.lang.String">count(/order/item)</xpath>
</setHeader>
<log message="${header.itemCount}"></log>



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Re: Node count in camel

[Deepthi <de...@gmail.com>]

Hi Michal,

I am trying to give in the following manner:
<filter>
  <xpath>count(/order/item)</xpath>
</filter>

It is not working. Where am i going wrong?



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Re: Node count in camel

["michal.warecki" <mi...@gmail.com>]

There is "count" function in XPath. As I know Saxon can handle this function.



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