Well, there is subtlety involved, but it's in how JSTL handles a Map versus a
JavaBean. In the case of a Map, if value evaluates to null, the entry is
removed from the Map. In the case of a JavaBean, the property is set to null.
Quoting Siggelkow, Bill [EMAIL PROTECTED]:
There is a subtle
Ahh !! You're right! I was just looking at the spec for c:set and it is clearly
stated.
-Original Message-
From: Kris Schneider [mailto:[EMAIL PROTECTED]
Sent: Monday, August 11, 2003 12:51 PM
To: Tag Libraries Users List
Subject: RE: Removing a value from a map present in Session
With JSTL:
c:set target=${sessionScope.map} property=name value=${null}/
Quoting shanmugampl [EMAIL PROTECTED]:
Hi,
I have a map in session scope which contains an entry with key
name. I want to remove that entry from the map
%= ((Map)session.getAttribute(map)).remove(name) %
Hi,
I have a map in session scope which contains an entry with key
name. I want to remove that entry from the map
%= ((Map)session.getAttribute(map)).remove(name) %
How do i achieve this in jstl el ?
Thanks
Shanmugam PL
-
There is a subtle difference here -- using the c:set ... method I think it will
actually set the Map value to null but the key will still be there. Whereas doing the
explicity Map.remove() will actually remove the map entry.
-Original Message-
From: Kris Schneider [mailto:[EMAIL
