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https://issues.apache.org/jira/browse/NIFI-1023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16891031#comment-16891031
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Nico Verwer commented on NIFI-1023:
-----------------------------------
When using EvaluateXQuery, it is possible to declare namespaces, like this:
{code:java}
declare namespace rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";;
declare namespace dcterms="http://purl.org/dc/terms/";;
return //rdf:Description/dcterms:identifier/text(){code}
There is no possibility to declare namespaces in EvaluateXPath.
A controller service would be very helpful, and even essential in serious XML
applications. This is even true for EvaluateXQuery, where it would save a lot
of duplicated namespace declarations.
> Need ability to supply namespace mapping for XPath/XQuery processors
> --------------------------------------------------------------------
>
> Key: NIFI-1023
> URL: https://issues.apache.org/jira/browse/NIFI-1023
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Gilman
> Priority: Minor
>
> Possibly consider creating a controller service that provides access to a
> NamespaceContext which can be used with EvaluteXPath and EvaluateXQuery.
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