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From "Willem Jiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-5550) Add headerName option to xpath/xpath language
Date Mon, 03 Sep 2012 03:09:09 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-5550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13447098#comment-13447098
] 

Willem Jiang commented on CAMEL-5550:
-------------------------------------

@Babak,

I'm very Sorry about it.
I didn't update my eclipse workspace to pick up the grading change of saxon, so I revert the
change you made before as my eclipse suggested and will reapply your change shortly today.
                
> Add headerName option to xpath/xpath language
> ---------------------------------------------
>
>                 Key: CAMEL-5550
>                 URL: https://issues.apache.org/jira/browse/CAMEL-5550
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core
>            Reporter: Claus Ibsen
>            Assignee: Willem Jiang
>            Priority: Minor
>             Fix For: 2.11.0
>
>         Attachments: CAMEL-5550.patch
>
>
> We recently added headerName to @XPath / @XQuery to support doing xpaths on headers.
We should add that as well to the xpath/xquery languages so its exposed in the DSL, so people
can use that.
> For example in a content based router. Today there is some functions that return a header,
but its a bit cumbersome to use. Maybe people have stored a xml in a header, and just want
the xpath to evaluate on that.
> The Java / Scala DSL is a bit heavier to add, as it would entail new methods in various
builder classes to support that. And we got a bunch already for the namespaces, and return
type etc. So be selective and only add a few for the header which makes the most sense. People
can always create the expression/predicate using the xpath builder itself.

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