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From "Michele Vivoda (JIRA)" <>
Subject [jira] [Commented] (JXPATH-183) XMLGregorianCalendar existence adding a lot of performance penalty
Date Sat, 28 Nov 2015 23:57:11 GMT


Michele Vivoda commented on JXPATH-183:

Registering the class as atomic value should be the solution of this issue, the trick is that
one must not register the abstract super class but the implementation class:

try {
} catch (DatatypeConfigurationException e) {
	// ignore, no datatype lib

Maybe this should be done in the constructor of {{JXPathIntrospector}} and probably also for
{{GregorianCalendar}}. I noticed also that, after registering a class as atomic is still possible
to access the properties using a "direct" xpath, for example calendar timezone {{cal/timeZone}},
looks like that the difference is only in that the properties are not iterable, for example
when using {{cal//*}}

> XMLGregorianCalendar existence adding a lot of performance penalty
> ------------------------------------------------------------------
>                 Key: JXPATH-183
>                 URL:
>             Project: Commons JXPath
>          Issue Type: Improvement
>    Affects Versions: 1.3
>         Environment: Windows 7, Amazon Unix, Weblogic
>            Reporter: Ganna Shmatova
>              Labels: performance
>         Attachments:
> We're using JXPath to parse some input from a client. When they give us a valid date
it gets transformed from a SOAP message into Java objects. When this happens JXPath queries
suddenly take 1-8 seconds more (depending on system -- the optimized system it's 1 second,
dev & test machines it's 8).
> Kicker is, we don't even look for this field. Just its existence does it.
> (we've quickfixed to omit the xml tags before the string is parsed into Java for now)

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