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From "Matt Benson (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (JXPATH-151) null handling is inconsistent
Date Wed, 08 Jun 2011 18:20:59 GMT

     [ https://issues.apache.org/jira/browse/JXPATH-151?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matt Benson resolved JXPATH-151.
--------------------------------

    Resolution: Fixed

Committed revision 1133499.

> null handling is inconsistent
> -----------------------------
>
>                 Key: JXPATH-151
>                 URL: https://issues.apache.org/jira/browse/JXPATH-151
>             Project: Commons JXPath
>          Issue Type: Bug
>    Affects Versions: 1.3
>         Environment: windows oracle jvm 1.6_25
>            Reporter: Johannes Stelzer
>            Priority: Blocker
>
> Comparing a vaule to null using unequals (\!=) yields false!
> {noformat}
>         Map<String, Integer> m = new HashMap<String, Integer>();
>         m.put("a", 1);
>         m.put("b", null);
>         m.put("c", 1);
>         JXPathContext c = JXPathContext.newContext(m);
>         System.out.println(c.getValue("a != b") + " should be true");
>         System.out.println(c.getValue("a != c") + " should be false");
>         System.out.println(c.getValue("a = b") + " should be false");
>         System.out.println(c.getValue("a = c") + " should be true");
>         System.out.println(c.getValue("not(a = b)") + " should be true");
>         System.out.println(c.getValue("not(a = c)") + " should be false");
> {noformat} 
> Output using 1.3:
> {color:red} false should be true{color}
> false should be false
> false should be false
> true should be true
> true should be true
> false should be false
> In 1.2 it works correctly!

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