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Subject [jira] Updated: (JELLY-78) Null variables are passed over by scope inheritance
Date Tue, 09 Sep 2003 15:09:11 GMT
The following issue has been updated:

    Updater: Morgan Delagrange (
       Date: Tue, 9 Sep 2003 10:08 AM
             Fix Version changed to 1.0-beta-4
For a full history of the issue, see:

View the issue:

Here is an overview of the issue:
        Key: JELLY-78
    Summary: Null variables are passed over by scope inheritance
       Type: Bug

     Status: Unassigned
   Priority: Minor

 Time Spent: Unknown
  Remaining: Unknown

    Project: jelly
             core / taglib.core
   Fix Fors:

   Reporter: Scott Howlett

    Created: Tue, 26 Aug 2003 2:08 PM
    Updated: Tue, 9 Sep 2003 10:08 AM

If I explicitly assign variable foo a null value in the current scope but it has a value in
some parent scope, findVariable() will bypass the null value in favor of the non-null value
up the chain.

This is because JellyContext.getVariable & findVariable just test the result of variables.get(name)
against null instead of also checking with containsKey like this:

       Object value = variables.get(name);
       if ( value == null
         && !variables.containsKey(name)
         && isInherit() ) {


Perhaps this is an explicit design decision, but I thought it was worth mentioning.

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