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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » getFirstElementByPath vs evaluateXPath

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paranoid221
PostPosted: Mon Nov 03, 2008 10:08 pm    Post subject: getFirstElementByPath vs evaluateXPath Reply with quote

Centurion

Joined: 03 Apr 2006
Posts: 101
Location: USA
Not to be considered as a trivia/quiz question, but just trying to understand this
For a given input XML, if I have to retrieve the value of an element in the XML which would be a more costlier operation (performance-wise)
getFirstElementByPath or evaluateXPath.

Comments and insight into this much appreciated.
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ovasquez
PostPosted: Wed Aug 19, 2009 9:17 am    Post subject: Reply with quote

Centurion

Joined: 09 Dec 2005
Posts: 141
Location: Lima, Peru
acorder IBM.
GETByPath is better than XPATH
58% msg/sec(GETByPath) = msg/sec(xpath)

read for example ip15_WMB V6.1 For zOS Performance report.
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mqjeff
PostPosted: Wed Aug 19, 2009 9:50 am    Post subject: Reply with quote

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Joined: 25 Jun 2008
Posts: 17447
Also, it doesn't matter at all whether the input message is XML or not.

Both getFirstElementByPath and evaluateXPath operate on the logical message tree that is constructed by the parser, and it is only the parser that cares what the input message bitstream contains.
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