What are: url:http|// ... urn:urn|uuid| ... uri:http|//

44reader · 07-05-2012, 11:55 AM

Principally, what is the difference between url:http|// and uri:http|// ?

But in asking this, I've now come across urn:urn|uuid| as well.

Can someone explain please.

I thought it would be handy to put the URL of the forum thread whence I grab a book release on here into the Ids box in the books' metadata. Should I use url or uri? And what is urn?

HarryT · 07-05-2012, 11:58 AM

See:

http://en.wikipedia.org/wiki/Uniform...rce_identifier

44reader · 07-05-2012, 12:24 PM

Crikey!

OK, thanks, Harry.

So a URI is a broader term of which URN (name) and URL (address) are sub-terms.

I think I'll stick with url:http|// when I put MobileRead threads' URLs into my books' metadata. I'm not sure why Gutenberg uses "uri" - even reading that article.

Anyway, thanks; unless I've missed something, I can use uri or url interchangeably. They will both provide a click-able link in the Book Details pane in calibre, right?

HarryT · 07-05-2012, 12:27 PM

Quote:

Originally Posted by 44reader

Anyway, thanks; unless I've missed something, I can use uri or url interchangeably. They will both provide a click-able link in the Book Details pane in calibre, right?

Yes, I believe that's correct. All URLs are also URIs (but not vice versa).

44reader · 07-05-2012, 12:28 PM

Thanks for the quick reply, Harry.

44reader · 07-05-2012, 01:42 PM

Also, like ISBNs, you cannot have a two URIs in the same Ids field.

You can have a URL and a URI, but then only the URI (calibre sorts the Ids alphabetically, it seems) shows as a click-able link in Book Details.

Eg.

Code:

uri:http|//www.gutenberg.org/ebooks/8914, url:http|//www.mobileread.com/forums/showthread.php?t=183220

is OK but only the Gutenberg link is click-able.

When you change the URL to a URI like this:

Code:

uri:http|//www.gutenberg.org/ebooks/8914, uri:http|//www.mobileread.com/forums/showthread.php?t=183220

the MobileRead link overwrites the Gutenberg one.

You end up with only this:

Code:

uri:http|//www.mobileread.com/forums/showthread.php?t=183220

That's a shame.

It also means I can't have a click-able link to the MobileRead thread as well as Zelda Pinwheel's Id that she put in her Three Men In A Boat upload.

This doesn't provide a click-able link:

Code:

uri:zelda@mobileread.com|2010040720, url:http|//www.mobileread.com/forums/showthread.php?t=48377

Pity.

07-05-2012, 11:55 AM	#1
44reader Connoisseur Posts: 61 Karma: 1234 Join Date: Jun 2012 Device: none	What are: url:http\|// ... urn:urn\|uuid\| ... uri:http\|// Principally, what is the difference between url:http\|// and uri:http\|// ? But in asking this, I've now come across urn:urn\|uuid\| as well. Can someone explain please. I thought it would be handy to put the URL of the forum thread whence I grab a book release on here into the Ids box in the books' metadata. Should I use url or uri? And what is urn? Last edited by 44reader; 07-05-2012 at 11:56 AM. Reason: typo

07-05-2012, 12:28 PM	#5
44reader Connoisseur Posts: 61 Karma: 1234 Join Date: Jun 2012 Device: none	Thanks for the quick reply, Harry. Last edited by 44reader; 07-05-2012 at 01:19 PM. Reason: deleted lazy request

07-05-2012, 01:42 PM	#6
44reader Connoisseur Posts: 61 Karma: 1234 Join Date: Jun 2012 Device: none	Also, like ISBNs, you cannot have a two URIs in the same Ids field. You can have a URL and a URI, but then only the URI (calibre sorts the Ids alphabetically, it seems) shows as a click-able link in Book Details. Eg. Code: uri:http\|//www.gutenberg.org/ebooks/8914, url:http\|//www.mobileread.com/forums/showthread.php?t=183220 is OK but only the Gutenberg link is click-able. When you change the URL to a URI like this: Code: uri:http\|//www.gutenberg.org/ebooks/8914, uri:http\|//www.mobileread.com/forums/showthread.php?t=183220 the MobileRead link overwrites the Gutenberg one. You end up with only this: Code: uri:http\|//www.mobileread.com/forums/showthread.php?t=183220 That's a shame. It also means I can't have a click-able link to the MobileRead thread as well as Zelda Pinwheel's Id that she put in her Three Men In A Boat upload. This doesn't provide a click-able link: Code: uri:zelda@mobileread.com\|2010040720, url:http\|//www.mobileread.com/forums/showthread.php?t=48377 Pity.

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07-05-2012, 11:58 AM	#2
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383043 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	See: http://en.wikipedia.org/wiki/Uniform...rce_identifier

07-05-2012, 12:24 PM	#3
44reader Connoisseur Posts: 61 Karma: 1234 Join Date: Jun 2012 Device: none	Crikey! OK, thanks, Harry. So a URI is a broader term of which URN (name) and URL (address) are sub-terms. I think I'll stick with url:http\|// when I put MobileRead threads' URLs into my books' metadata. I'm not sure why Gutenberg uses "uri" - even reading that article. Anyway, thanks; unless I've missed something, I can use uri or url interchangeably. They will both provide a click-able link in the Book Details pane in calibre, right?