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Posted to issues@commons.apache.org by "Johannes Stelzer (JIRA)" <ji...@apache.org> on 2011/06/07 12:27:58 UTC
[jira] [Updated] (JXPATH-151) a != null results in false!
[ https://issues.apache.org/jira/browse/JXPATH-151?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Johannes Stelzer updated JXPATH-151:
------------------------------------
Description:
Comparing a vaule to null using unequals (!=) yields false!
{{quote}}
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");
{{quote}}
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!
was:
Comparing an vaule to null using unequals(!=) yields false!
Example code:
public static void main(String[] args) {
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");
}
> a != null results in false!
> ---------------------------
>
> 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!
> {{quote}}
> 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");
> {{quote}}
> 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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