- From: Steve Harris <steve.harris@garlik.com>
- Date: Fri, 13 May 2011 22:37:04 +0100
- To: Alex Hall <alexhall@revelytix.com>
- Cc: RDF Working Group WG <public-rdf-wg@w3.org>
On 2011-05-13, at 19:20, Alex Hall wrote:
...
> 3. There are probably countless instances of the following logic deployed in existing systems (I cut-and-pasted this directly from my own code):
>
> public Literal(String lexicalValue, String language, URI datatype) {
> ...
> if (language != null && datatype != null) {
> throw new IllegalArgumentException("An RDF literal may not have both a language and a datatype.");
> }
> ...
> }
>
> I'm willing to change my code, but I can't speak for everybody...
More concerning is code like:
Literal(String lexicalValue, Resource lang_or_dt)
{
if (typeof(lang_or_dt) == Literal) {
/* it has a language tag */
} else if (typeof(lang_or_dt) == URI) {
/* it has a datatype */
} else {
/* it has neither */
}
}
We have a lot of such code.
It /might/ all come out in the wash, but it's going to need some care.
- Steve
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Received on Friday, 13 May 2011 21:37:34 UTC