- From: Steven Pemberton <steven.pemberton@cwi.nl>
- Date: Thu, 16 Nov 2023 15:54:39 +0000
- To: XForms <public-xformsusers@w3.org>
https://www.w3.org/community/xformsusers/wiki/XForms_2.0#The_instance_Element <instance> has two attributes for external content: the original @src, and the newer @resource. An instance can also have inline content, and we define how the three interact as follows: The data for the instance is obtained from the link in the src attribute, if present and successful, otherwise from the inline content of the instance element if present, and otherwise from the link in the resource attribute. 1. With <instance src="saved.xml"> <data xmlns=""> <score>0</score> </data> <instance> If saved.xml is readable, then that is used, otherwise the inline data. 2. Similarly, with <instance src="saved.xml" resource="init.xml"> <data xmlns=""> <score>0</score> </data> <instance> If saved.xml is readable, then that is used, otherwise the inline data. @resource is never used. 3. With <instance resource="saved.xml"> <data xmlns=""> <score>0</score> </data> <instance> Only the inline data is used. 4. With <instance src="saved.xml" resource="init.xml"/> If saved.xml is readable, then that is used, otherwise init.xml. I think 3. is a historical mistake, but is now part of our legacy. However, explaining 1. in a lecture, it struck me that 'src' is not a very mnemonic name, and that @try would be a better name: <instance try="saved.xml"> <data xmlns=""> <score>0</score> </data> <instance> <instance try="saved.xml" resource="init.xml"/> So proposal: deprecate @src, and introduce @try, but with the same meaning: The data for the instance is obtained from the link in the try attribute, if present and successful, otherwise from the inline content of the instance element if present, and otherwise from the link in the resource attribute. Steven
Received on Thursday, 16 November 2023 15:54:46 UTC