Martin,

There's not enough context in your mail to really understand the situation. But Content-Location should be used when a content- negotiated URL is accessed, and it should give a URL for the specific variant that was chosen by the content-negotiation algorithm. For example, if </report> is available in plain text, PDF and HTML, and those three variants have the URLs </report.txt>, </report.pdf> and </ report.html>, and let's say an agent that prefers plain text accesses </report>, then the server should send the contents of </report.txt>, and should send a header "Content-Location: /report.txt" along with the response.

This is a recommended practice for content negotiation in general, and is orthogonal to any LOD issues.

Best,
Richard


On 5 Jun 2009, at 07:08, Martin Hepp (UniBW) wrote:

Dear all,

is this an acceptable practice from an LOD point of view or are there technical concerns?

Martin

Damian Steer wrote:

On 20 May 2009, at 18:54, Martin Hepp (UniBW) wrote:

Hi Damian:
Thanks for your e-mail! I must admit that I don't get what exactly you are proposing with

<thought entertained="minimal">
If the location header was set in the response I guess that might help.
</thought>

Best
Martin

Hi Martin,

Apologies. The perils of hasty emails :-)

I meant setting the 'Content-Location' header, to indicate where the data came from. It's lighter than a redirect.

Example:

GET http://logs.jruby.org/jruby/latest
=>
HTTP/1.1 200 OK
...
Content-Location: latest.txt

Similarly you could try:

GET http://openean.kaufkauf.net/id/EanUpc_0001067792600
=>
HTTP/1.1 200 OK
...
Content-Location: EanUpc_range_xxxxxx

GET http://openean.kaufkauf.net/id/EanUpc_0008811127923
=>
HTTP/1.1 200 OK
...
Content-Location: EanUpc_range_xxxxxx

Which seems like a reasonable way to indicate they have the same content.

Damian


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