[bug #14523] NSURLHandle caching problem

[Sašo Kiselkov]

Follow-up Comment #1, bug #14523 (project gnustep):

Problem fixed. A patched version of NSURLHandle.[hm] is available at
http://openspace.adlerka.sk/NSURLHandleFix.tar.gz .

In detail, I've added the method -[NSURLHandle hasUpToDateData] which
subclasses should override to do any checks on whether the currently loaded
version of the data is up-to-date. They can obtain the date the last fetch
has been done by looking at the _loadDate ivar - it's automagically set up by
NSURLHandle every time a data load is completed successfuly. (The default
implementation of -hasUpToDateData always returns YES.)

When NSURLHandle's data is requested by -resourceData and the data load has
been successfuly finished, it first asks itself with -hasUpToDateData whether
the current version of the data is really up-to-date. If not, it loads the
data resource again. The -availableResourceData doesn't perform any such
checks.

The default implementation of -[NSURLHandle  always returns YES, i.e. it
doesn't do any checking.

GSFileURLHandle overrides -hasUpToDateData and checks the modification date
of the file and acts accordingly.

That's it. :-)

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=14523>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/