- From: Anselm Baird-Smith <abaird@w3.org>
- Date: Fri, 21 Jun 1996 19:20:51 +0500
- To: alex@access.com.au (Alexandre Rafalovitch)
- Cc: www-jigsaw@w3.org
Alexandre Rafalovitch writes: > Hi, > > I was looking through the code of DirectoryResource and one small bit > striked me as extremely strange. Directory resource has a variable listing, > which is not an attribute. It is never saved anywhere and it is > recalculated only when underlining data is modified or when it is null. (I > assume on first reference for the directory listing). Correct, it is computed when it is null, wich typically means right after the directory resource is instantiated (provided a request hits it). > The problem is, I always assumed that I have a single instance of each > resource and when it is accessed it has its parameters set before and saved > after. If I am right, that under some circumstances a Directory resource > should show for new directory listing of old directory. *Only* registered attributes of resources are made persistent. In the case of the DirectoryResource this means all the one that are registered in the static block of the class. > On another hand if I am wrong, then when do new instances of a resource get > created, by whom, and when are they released? They gets created /released by Jigsaw runtime, according to some policy defined by the 'ResourceStoreManager' > Please resolve that mistery for me, because I don't know how much I can > relly on non attribute variables. Non attribute values (ie instance variables) are never saved; that's a feature ;-) Anselm.
Received on Friday, 21 June 1996 19:20:58 UTC