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Disposition-Notification-To: "Nassim Chalfouh"
 <nassim.chalfouh@prima-solutions.com>
Subject: Evaluating null value in getValue?
Date: Tue, 15 Jun 2004 11:16:58 +0200
Message-ID: 
 <B259031DAB5CBE4193EA7E7EF32E5A6F011F2A41@semaphore.prima-solutions.com>
Thread-Topic: Evaluating null value in getValue?
Thread-Index: AcRSuYCYhYPGF3A7RoqMercNVFmODQ==
From: "Nassim Chalfouh" <nassim.chalfouh@prima-solutions.com>
To: <commons-user@jakarta.apache.org>

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Hi all,
i have the following classes:
public class Holder {

private String name;

private Holder sub;

Holder() {

name =3D "aaa";

sub =3D null;

}

public String getName() {

return name;

}

public Holder getSub() {

return sub;

}

}

and the sample code:
Holder h =3D new Holder();

JXPathContext jc =3D JXPathContext.newContext(h);

System.out.println((String) jc.getValue("name"));

System.out.println(jc.getValue("name=3D'aaa'"));

System.out.println(jc.getValue("sub"));

System.out.println(jc.getValue("sub=3Dnull"));

The results are:
=20
aaa

true

null

false         <---------- I expected true!

i tried to change the=20

System.out.println(jc.getValue("sub=3D'null'"));

but the output is still 'FALSE'

how can i test a null value in getValue method?

Thanks a lot for your help

Best regards,

=20

=20

=20

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Nassim Chalfouh    |    Quality Assurance                     Direct
Line : +33 1 70 91 24 41=20
PRIMA SOLUTIONS

Delivering the Unified Insurance Front-End
http://www.prima-solutions.com <http://www.prima-solutions.com/>

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