Trimming an xpath expression used in a Camel route

This might be either a camel or an xpath question :). Note to non-camel folks: camel uses javax.xml.xpath to resolve their xml.

In a camel route, I'm trying to pull an element out of the xml body to use as my filename:

Namespaces ns = getNamespaces();

String fileIDxPath = (see notes);

from("direct:testOutToFile")
    .setHeader(Exchange.FILE_NAME, ns.xpath(fileIDxPath))
    .to("file:/tmp/testing/generatedXML");

But I can't seem to get an xpath that gives me the trimmed value of the node. Here's the xpath that I've tried:

A) //rm:TradeMsg/rm:Submitter/rm:partyTradeIdentifier/fpml:tradeId/
B) //rm:TradeMsg/rm:Submitte开发者_开发百科r/rm:partyTradeIdentifier/fpml:tradeId/text()
C) //rm:TradeMsg/rm:Submitter/rm:partyTradeIdentifier/fpml:tradeId/text()[normalize-space()]
D) normalize-space(//rm:TradeMsg/rm:Submitter/rm:partyTradeIdentifier/fpml:tradeId/text())

• A) Returns the whole node, not just the value
• B) Returns the value, but with loads of whitespace
• C) Also returns the value with all of the whitespace
• D) Throws XPathExpressionException

Question for xpath gurus - am I missing something in my xpath that would trim this value?

Question for camel gurus - maybe I can trim this value after it's evaluated? I know I could pass it through another step, but I'd think that this would be a common enough use case to be supported in the ns.xpath call itself.

I also noticed that the ns.xpath sets the header to an instance of 'com.sun.org.apache.xml.internal.dtm.ref.DTMNodeList' instead String, which would be the expected type.

Thanks all,

Roy

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try this...it works fine in 2.8-SNAPSHOT

.setHeader(Exchange.FILE_NAME, 
           XPathBuilder.xpath("normalize-space(//rm:TradeMsg/rm:Submitter/rm:partyTradeIdentifier/fpml:tradeId/text()", String.class))

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Have you tried: normalize-space(//rm:TradeMsg/rm:Submitter/rm:partyTradeIdentifier/fpml:tradeId) ?