
From ioseb.dzmanashvili@gmail.com  Sun May 26 04:24:09 2013
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Date: Sun, 26 May 2013 15:24:04 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: "=?utf-8?Q?link-relations=40ietf.org?=" <link-relations@ietf.org>
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Subject: NEW RELATION: property and context
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Dear All,

I've submitted new draft for the "property" and "context" link relation types: http://tools.ietf.org/html/draft-property-and-context-link-relations-00

Description: 

- This specification defines link relation types that may be used to express the relationships between a resource and associated properties or between a resource and it's context.
- The "property" and "context" link relations are intentionally generic, and they can be used with multiple media types in a wide variety of use cases
- The "property" Link Relation Type: When included in a response, the "property" link relation identifies a target resource that represents a property of the context resource.
- The "context" Link Relation Type: When included in a response, the "context" link relation identifies a target resource that represents a context document of which the context resource is a member.

Could you please review?
Thanks in advance!

Best regards,
ioseb
-- 
Ioseb Dzmanashvili
AzRy LLC
Software Architect
#8, Chachava str.
Tbilisi, 0159, Georgia
Mobile: +(995) 99753388
github.com/ioseb
twitter.com/iosebi

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<div>Dear All,</div><div><br></div><div>I've submitted new draft for the =
=22property=22 and =22context=22 link relation types: http://tools.ietf.o=
rg/html/draft-property-and-context-link-relations-00</div><div><br></div>=
<div>Description:&nbsp;</div><div><br></div><div>- This specification def=
ines link relation types that may be used to express the relationships be=
tween a resource and associated properties or between a resource and it's=
 context.</div><div>- The =22property=22 and =22context=22 link relations=
 are intentionally generic, and they can be used with multiple media type=
s in a wide variety of use cases</div><div>- The =22property=22 Link Rela=
tion Type: When included in a response, the =22property=22 link relation =
identifies a target resource that represents a property of the context re=
source.</div><div>- The =22context=22 Link Relation Type: When included i=
n a response, the =22context=22 link relation identifies a target resourc=
e that represents a context document of which the context resource is a m=
ember.</div><div><br></div><div>Could you please review=3F</div><div>Than=
ks in advance=21</div><div><br></div><div>Best regards,</div><div>ioseb</=
div><div>--&nbsp;</div><div>Ioseb Dzmanashvili</div><div>AzRy LLC</div><d=
iv>Software Architect</div><div>=238, Chachava str.</div><div>Tbilisi, 01=
59, Georgia</div><div>Mobile: +(995) 99753388</div><div>github.com/ioseb<=
/div><div>twitter.com/iosebi</div>
--51a1f0d4_b03e0c6_1b1--


From ioseb.dzmanashvili@gmail.com  Sun May 26 04:51:21 2013
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Date: Sun, 26 May 2013 15:51:14 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: mca <mca@amundsen.com>
Message-ID: <87B38357AED34BF89465EC5111A090EA@gmail.com>
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Subject: Re: [apps-discuss] NEW RELATION: property and context
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Hi Mike,

Thanks for response!

> How are these different from the "collection" and "item" link relations?
> IOW, what can be described by "property" and "context" that cannot be described by "collection" and "item"?

It depends how we look at things. For example if if we've a resource that is a photo(or video etc...) we can not describe it as a collection. If we've resource which is a property of that photo we can indicate the context resource of this photo with the "context" link relation, as i understand and see it the "collection" link relation doesn't properly describe photo which definitely is not a collection of items itself.

Another example is a file which has various attributes(or properties), if for example i want to express these properties of the file as links i think the "property" link relation will be more correct rather than the "item" link relation IMHO.

ioseb 

On Sunday, May 26, 2013 at 3:38 PM, mca wrote:

> How are these different from the "collection" and "item" link relations?
> IOW, what can be described by "property" and "context" that cannot be described by "collection" and "item"?
> On May 26, 2013 1:22 PM, "Ioseb Dzmanashvili" <ioseb.dzmanashvili@gmail.com (mailto:ioseb.dzmanashvili@gmail.com)> wrote:
> > Dear All, 
> > 
> > I've submitted new draft for the "property" and "context" link relation types: http://tools.ietf.org/html/draft-property-and-context-link-relations-00 
> > 
> > Description: 
> > 
> > - This specification defines link relation types that may be used to express the relationships between a resource and associated properties or between a resource and it's context. 
> > - The "property" and "context" link relations are intentionally generic, and they can be used with multiple media types in a wide variety of use cases
> > 
> > - The "property" Link Relation Type: When included in a response, the "property" link relation identifies a target resource that represents a property of the context resource.
> > - The "context" Link Relation Type: When included in a response, the "context" link relation identifies a target resource that represents a context document of which the context resource is a member.
> > 
> > 
> > Could you please review?
> > Thanks in advance!
> > 
> > 
> > Best regards,
> > ioseb
> > -- 
> > Ioseb Dzmanashvili
> > AzRy LLC
> > Software Architect
> > #8, Chachava str.
> > Tbilisi, 0159, Georgia
> > 
> > Mobile: +(995) 99753388
> > github.com/ioseb (http://github.com/ioseb)
> > twitter.com/iosebi (http://twitter.com/iosebi)
> > 
> > 
> > 
> > _______________________________________________
> > apps-discuss mailing list
> > apps-discuss@ietf.org (mailto:apps-discuss@ietf.org)
> > https://www.ietf.org/mailman/listinfo/apps-discuss
> > 


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                <div>Hi Mike,</div><div><br></div><div>Thanks for respons=
e=21</div><div><br></div><div><div>&gt; How are these different from the =
=22collection=22 and =22item=22 link relations=3F</div><div>&gt; IOW, wha=
t can be described by =22property=22 and =22context=22 that cannot be des=
cribed by =22collection=22 and =22item=22=3F</div><div><br></div><div>It =
depends how we look at things. =46or example if if we've a resource that =
is a photo(or video etc...) we can not describe it as a collection. If we=
've resource which is a property of that photo we can indicate the contex=
t resource of this photo with the =22context=22 link relation, as i under=
stand and see it the =22collection=22 link relation doesn't properly desc=
ribe photo which definitely is not a collection of items itself.</div><di=
v><br></div><div>Another example is a file which has various attributes(o=
r properties), if for example i want to express these properties of the f=
ile as links i think the =22property=22 link relation will be more correc=
t rather than the =22item=22 link relation IMHO.</div></div><div><br></di=
v><div>ioseb</div>
                =20
                <p style=3D=22color: =23A0A0A8;=22>On Sunday, May 26, 201=
3 at 3:38 PM, mca wrote:</p>
                <blockquote type=3D=22cite=22 style=3D=22border-left-styl=
e:solid;border-width:1px;margin-left:0px;padding-left:10px;=22>
                    <span><div><div><p dir=3D=22ltr=22>How are these diff=
erent from the =22collection=22 and =22item=22 link relations=3F</p>
<p dir=3D=22ltr=22>IOW, what can be described by =22property=22 and =22co=
ntext=22 that cannot be described by =22collection=22 and =22item=22=3F</=
p>
<div>On May 26, 2013 1:22 PM, =22Ioseb Dzmanashvili=22 &lt;<a href=3D=22m=
ailto:ioseb.dzmanashvili=40gmail.com=22>ioseb.dzmanashvili=40gmail.com</a=
>&gt; wrote:<br type=3D=22attribution=22><blockquote type=3D=22cite=22><d=
iv>

                <div>
                    Dear All,
                </div><div><br></div><div>I've submitted new draft for th=
e =22property=22 and =22context=22 link relation types:&nbsp;<a href=3D=22=
http://tools.ietf.org/html/draft-property-and-context-link-relations-00=22=
 target=3D=22=5Fblank=22>http://tools.ietf.org/html/draft-property-and-co=
ntext-link-relations-00</a></div>
<div><br></div><div>Description:&nbsp;</div><div><br></div><div><div>- Th=
is specification defines link relation types that may be used&nbsp;to exp=
ress the relationships between a resource and associated&nbsp;properties =
or between a resource and it's context.</div>
<div>- The =22property=22 and =22context=22 link relations are intentiona=
lly&nbsp;generic, and they can be used with multiple media types in a wid=
e&nbsp;variety of use cases</div></div><div>- The =22property=22 Link Rel=
ation Type:&nbsp;When included in a response, the =22property=22 link rel=
ation identifies a target resource that represents a property of the cont=
ext resource.</div>
<div><div>- The =22context=22 Link Relation Type:&nbsp;When included in a=
 response, the =22context=22 link relation identifies a target resource t=
hat represents a context document of which the context resource is a memb=
er.</div>
</div>
                <div><div><br></div><div><div>Could you please review=3F<=
/div><div>Thanks in advance=21</div></div><div><br></div><div>Best regard=
s,</div><div>ioseb</div><div>--&nbsp;</div><div><div>Ioseb Dzmanashvili</=
div><div>AzRy LLC</div>
<div>Software Architect</div><div><div>=238, Chachava str.</div><div>Tbil=
isi, 0159, Georgia</div></div><div>Mobile: +(995) 99753388</div><div><a h=
ref=3D=22http://github.com/ioseb=22 target=3D=22=5Fblank=22>github.com/io=
seb</a></div><div>
<a href=3D=22http://twitter.com/iosebi=22 target=3D=22=5Fblank=22>twitter=
.com/iosebi</a></div></div></div>
            <br>=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F<br>
apps-discuss mailing list<br>
<a href=3D=22mailto:apps-discuss=40ietf.org=22>apps-discuss=40ietf.org</a=
><br>
<a href=3D=22https://www.ietf.org/mailman/listinfo/apps-discuss=22 target=
=3D=22=5Fblank=22>https://www.ietf.org/mailman/listinfo/apps-discuss</a><=
br>
<br></div></blockquote></div>
</div></div></span>
                =20
                =20
                =20
                =20
                </blockquote>
                =20
                <div>
                    <br>
                </div>
            
--51a1f732_22221a70_1b1--


From mca@amundsen.com  Sun May 26 04:52:43 2013
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From: mca <mca@amundsen.com>
Date: Sun, 26 May 2013 07:52:18 -0400
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Subject: Re: [apps-discuss] NEW RELATION: property and context
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Ioseb:

so your thinking is that the attributes of a file is not a "collection"?

mca
+1.859.757.1449
skype: mca.amundsen
http://amundsen.com/blog/
http://twitter.com/mamund
https://github.com/mamund
http://www.linkedin.com/in/mikeamundsen



On Sun, May 26, 2013 at 7:51 AM, Ioseb Dzmanashvili <
ioseb.dzmanashvili@gmail.com> wrote:

> Hi Mike,
>
> Thanks for response!
>
> > How are these different from the "collection" and "item" link relations?
> > IOW, what can be described by "property" and "context" that cannot be
> described by "collection" and "item"?
>
> It depends how we look at things. For example if if we've a resource that
> is a photo(or video etc...) we can not describe it as a collection. If
> we've resource which is a property of that photo we can indicate the
> context resource of this photo with the "context" link relation, as i
> understand and see it the "collection" link relation doesn't properly
> describe photo which definitely is not a collection of items itself.
>
> Another example is a file which has various attributes(or properties), if
> for example i want to express these properties of the file as links i think
> the "property" link relation will be more correct rather than the "item"
> link relation IMHO.
>
> ioseb
>
> On Sunday, May 26, 2013 at 3:38 PM, mca wrote:
>
> How are these different from the "collection" and "item" link relations?
>
> IOW, what can be described by "property" and "context" that cannot be
> described by "collection" and "item"?
> On May 26, 2013 1:22 PM, "Ioseb Dzmanashvili" <
> ioseb.dzmanashvili@gmail.com> wrote:
>
>  Dear All,
>
> I've submitted new draft for the "property" and "context" link relation
> types:
> http://tools.ietf.org/html/draft-property-and-context-link-relations-00
>
> Description:
>
> - This specification defines link relation types that may be used to
> express the relationships between a resource and associated properties or
> between a resource and it's context.
> - The "property" and "context" link relations are intentionally generic,
> and they can be used with multiple media types in a wide variety of use
> cases
> - The "property" Link Relation Type: When included in a response, the
> "property" link relation identifies a target resource that represents a
> property of the context resource.
> - The "context" Link Relation Type: When included in a response, the
> "context" link relation identifies a target resource that represents a
> context document of which the context resource is a member.
>
> Could you please review?
> Thanks in advance!
>
> Best regards,
> ioseb
> --
> Ioseb Dzmanashvili
> AzRy LLC
> Software Architect
> #8, Chachava str.
> Tbilisi, 0159, Georgia
> Mobile: +(995) 99753388
> github.com/ioseb
> twitter.com/iosebi
>
> _______________________________________________
> apps-discuss mailing list
> apps-discuss@ietf.org
> https://www.ietf.org/mailman/listinfo/apps-discuss
>
>
>

--f46d044306422da9aa04dd9dab73
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<div dir=3D"ltr">Ioseb:<div><br></div><div style>so your thinking is that t=
he attributes of a file is not a &quot;collection&quot;?</div></div><div cl=
ass=3D"gmail_extra"><br clear=3D"all"><div>mca<div>+1.859.757.1449<br>skype=
: mca.amundsen<br>

<a href=3D"http://amundsen.com/blog/" target=3D"_blank">http://amundsen.com=
/blog/</a><br><a href=3D"http://twitter.com/mamund" target=3D"_blank">http:=
//twitter.com/mamund</a><br><a href=3D"https://github.com/mamund" target=3D=
"_blank">https://github.com/mamund</a><br>

<a href=3D"http://www.linkedin.com/in/mikeamundsen" target=3D"_blank">http:=
//www.linkedin.com/in/mikeamundsen</a><br><br></div></div>
<br><br><div class=3D"gmail_quote">On Sun, May 26, 2013 at 7:51 AM, Ioseb D=
zmanashvili <span dir=3D"ltr">&lt;<a href=3D"mailto:ioseb.dzmanashvili@gmai=
l.com" target=3D"_blank">ioseb.dzmanashvili@gmail.com</a>&gt;</span> wrote:=
<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
                <div>Hi Mike,</div><div><br></div><div>Thanks for response!=
</div><div><br></div><div><div class=3D"im"><div>&gt; How are these differe=
nt from the &quot;collection&quot; and &quot;item&quot; link relations?</di=
v>

<div>&gt; IOW, what can be described by &quot;property&quot; and &quot;cont=
ext&quot; that cannot be described by &quot;collection&quot; and &quot;item=
&quot;?</div><div><br></div></div><div>It depends how we look at things. Fo=
r example if if we&#39;ve a resource that is a photo(or video etc...) we ca=
n not describe it as a collection. If we&#39;ve resource which is a propert=
y of that photo we can indicate the context resource of this photo with the=
 &quot;context&quot; link relation, as i understand and see it the &quot;co=
llection&quot; link relation doesn&#39;t properly describe photo which defi=
nitely is not a collection of items itself.</div>

<div><br></div><div>Another example is a file which has various attributes(=
or properties), if for example i want to express these properties of the fi=
le as links i think the &quot;property&quot; link relation will be more cor=
rect rather than the &quot;item&quot; link relation IMHO.</div>

</div><span class=3D"HOEnZb"><font color=3D"#888888"><div><br></div><div>io=
seb</div></font></span><div class=3D"HOEnZb"><div class=3D"h5">
                =20
                <p style=3D"color:#a0a0a8">On Sunday, May 26, 2013 at 3:38 =
PM, mca wrote:</p>
                <blockquote type=3D"cite" style=3D"border-left-style:solid;=
border-width:1px;margin-left:0px;padding-left:10px">
                    <span><div><div><p dir=3D"ltr">How are these different =
from the &quot;collection&quot; and &quot;item&quot; link relations?</p>
<p dir=3D"ltr">IOW, what can be described by &quot;property&quot; and &quot=
;context&quot; that cannot be described by &quot;collection&quot; and &quot=
;item&quot;?</p>
<div>On May 26, 2013 1:22 PM, &quot;Ioseb Dzmanashvili&quot; &lt;<a href=3D=
"mailto:ioseb.dzmanashvili@gmail.com" target=3D"_blank">ioseb.dzmanashvili@=
gmail.com</a>&gt; wrote:<br type=3D"attribution"><blockquote type=3D"cite">=
<div>



                <div>
                    Dear All,
                </div><div><br></div><div>I&#39;ve submitted new draft for =
the &quot;property&quot; and &quot;context&quot; link relation types:=A0<a =
href=3D"http://tools.ietf.org/html/draft-property-and-context-link-relation=
s-00" target=3D"_blank">http://tools.ietf.org/html/draft-property-and-conte=
xt-link-relations-00</a></div>


<div><br></div><div>Description:=A0</div><div><br></div><div><div>- This sp=
ecification defines link relation types that may be used=A0to express the r=
elationships between a resource and associated=A0properties or between a re=
source and it&#39;s context.</div>


<div>- The &quot;property&quot; and &quot;context&quot; link relations are =
intentionally=A0generic, and they can be used with multiple media types in =
a wide=A0variety of use cases</div></div><div>- The &quot;property&quot; Li=
nk Relation Type:=A0When included in a response, the &quot;property&quot; l=
ink relation identifies a target resource that represents a property of the=
 context resource.</div>


<div><div>- The &quot;context&quot; Link Relation Type:=A0When included in =
a response, the &quot;context&quot; link relation identifies a target resou=
rce that represents a context document of which the context resource is a m=
ember.</div>


</div>
                <div><div><br></div><div><div>Could you please review?</div=
><div>Thanks in advance!</div></div><div><br></div><div>Best regards,</div>=
<div>ioseb</div><div>--=A0</div><div><div>Ioseb Dzmanashvili</div><div>AzRy=
 LLC</div>


<div>Software Architect</div><div><div>#8, Chachava str.</div><div>Tbilisi,=
 0159, Georgia</div></div><div>Mobile: +(995) 99753388</div><div><a href=3D=
"http://github.com/ioseb" target=3D"_blank">github.com/ioseb</a></div><div>


<a href=3D"http://twitter.com/iosebi" target=3D"_blank">twitter.com/iosebi<=
/a></div></div></div>
            <br>_______________________________________________<br>
apps-discuss mailing list<br>
<a href=3D"mailto:apps-discuss@ietf.org" target=3D"_blank">apps-discuss@iet=
f.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/apps-discuss" target=3D"_b=
lank">https://www.ietf.org/mailman/listinfo/apps-discuss</a><br>
<br></div></blockquote></div>
</div></div></span>
                =20
                =20
                =20
                =20
                </blockquote>
                =20
                <div>
                    <br>
                </div>
            </div></div></blockquote></div><br></div>

--f46d044306422da9aa04dd9dab73--

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Date: Sun, 26 May 2013 16:00:21 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: mca <mca@amundsen.com>
Message-ID: <12C4054A6F864F9B8A7E6058ADC14687@gmail.com>
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Subject: Re: [apps-discuss] NEW RELATION: property and context
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Mike,

> so your thinking is that the attributes of a file is not a "collection"?

No, i think that attributes of a file is a collection, but i do not think that a file is a collection of attributes. 

Another example:

If i have an article with a photo(or whatever else), does it makes that article collection of photos(or other properties which are part of that article)? If i'm viewing photo can i say that hey here is the collection which this photo belongs to? or wouldn't it be more precise if i say hey here is the context to which this photo belongs to?

ioseb 

On Sunday, May 26, 2013 at 3:52 PM, mca wrote:

> Ioseb:
> 
> so your thinking is that the attributes of a file is not a "collection"?
> 
> mca
> +1.859.757.1449
> skype: mca.amundsen
> http://amundsen.com/blog/
> http://twitter.com/mamund
> https://github.com/mamund
> http://www.linkedin.com/in/mikeamundsen
> 
> 
> 
> On Sun, May 26, 2013 at 7:51 AM, Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com (mailto:ioseb.dzmanashvili@gmail.com)> wrote:
> > Hi Mike,
> > 
> > Thanks for response!
> > 
> > > How are these different from the "collection" and "item" link relations? 
> > > IOW, what can be described by "property" and "context" that cannot be described by "collection" and "item"?
> > 
> > It depends how we look at things. For example if if we've a resource that is a photo(or video etc...) we can not describe it as a collection. If we've resource which is a property of that photo we can indicate the context resource of this photo with the "context" link relation, as i understand and see it the "collection" link relation doesn't properly describe photo which definitely is not a collection of items itself. 
> > 
> > Another example is a file which has various attributes(or properties), if for example i want to express these properties of the file as links i think the "property" link relation will be more correct rather than the "item" link relation IMHO. 
> > 
> > ioseb
> > 
> > On Sunday, May 26, 2013 at 3:38 PM, mca wrote:
> > 
> > > How are these different from the "collection" and "item" link relations?
> > > IOW, what can be described by "property" and "context" that cannot be described by "collection" and "item"?
> > > On May 26, 2013 1:22 PM, "Ioseb Dzmanashvili" <ioseb.dzmanashvili@gmail.com (mailto:ioseb.dzmanashvili@gmail.com)> wrote:
> > > > Dear All, 
> > > > 
> > > > I've submitted new draft for the "property" and "context" link relation types: http://tools.ietf.org/html/draft-property-and-context-link-relations-00 
> > > > 
> > > > Description: 
> > > > 
> > > > - This specification defines link relation types that may be used to express the relationships between a resource and associated properties or between a resource and it's context. 
> > > > - The "property" and "context" link relations are intentionally generic, and they can be used with multiple media types in a wide variety of use cases
> > > > 
> > > > - The "property" Link Relation Type: When included in a response, the "property" link relation identifies a target resource that represents a property of the context resource.
> > > > - The "context" Link Relation Type: When included in a response, the "context" link relation identifies a target resource that represents a context document of which the context resource is a member.
> > > > 
> > > > 
> > > > Could you please review?
> > > > Thanks in advance!
> > > > 
> > > > 
> > > > Best regards,
> > > > ioseb
> > > > -- 
> > > > Ioseb Dzmanashvili
> > > > AzRy LLC
> > > > Software Architect
> > > > #8, Chachava str.
> > > > Tbilisi, 0159, Georgia
> > > > 
> > > > Mobile: +(995) 99753388
> > > > github.com/ioseb (http://github.com/ioseb)
> > > > twitter.com/iosebi (http://twitter.com/iosebi)
> > > > 
> > > > 
> > > > 
> > > > _______________________________________________
> > > > apps-discuss mailing list
> > > > apps-discuss@ietf.org (mailto:apps-discuss@ietf.org)
> > > > https://www.ietf.org/mailman/listinfo/apps-discuss
> > > > 
> > 
> 


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                <div>Mike,</div><div><br></div><div><div>&gt; so your thi=
nking is that the attributes of a file is not a =22collection=22=3F</div>=
<div><br></div><div>No, i think that attributes of a file is a collection=
, but i do not think that a file is a collection of attributes.&nbsp;</di=
v><div><br></div><div>Another example:</div><div><br></div><div>If i have=
 an article with a photo(or whatever else), does it makes that article co=
llection of photos(or other properties which are part of that article)=3F=
 If i'm viewing photo can i say that hey here is the collection which thi=
s photo belongs to=3F or wouldn't it be more precise if i say hey here is=
 the context to which this photo belongs to=3F</div><div><br></div><div>i=
oseb</div></div>
                =20
                <p style=3D=22color: =23A0A0A8;=22>On Sunday, May 26, 201=
3 at 3:52 PM, mca wrote:</p>
                <blockquote type=3D=22cite=22 style=3D=22border-left-styl=
e:solid;border-width:1px;margin-left:0px;padding-left:10px;=22>
                    <span><div><div><div dir=3D=22ltr=22>Ioseb:<div><br><=
/div><div style=3D=22=22>so your thinking is that the attributes of a fil=
e is not a =22collection=22=3F</div></div><div><br clear=3D=22all=22><div=
>mca<div>+1.859.757.1449<br>skype: mca.amundsen<br>

<a href=3D=22http://amundsen.com/blog/=22 target=3D=22=5Fblank=22>http://=
amundsen.com/blog/</a><br><a href=3D=22http://twitter.com/mamund=22 targe=
t=3D=22=5Fblank=22>http://twitter.com/mamund</a><br><a href=3D=22https://=
github.com/mamund=22 target=3D=22=5Fblank=22>https://github.com/mamund</a=
><br>

<a href=3D=22http://www.linkedin.com/in/mikeamundsen=22 target=3D=22=5Fbl=
ank=22>http://www.linkedin.com/in/mikeamundsen</a><br><br></div></div>
<br><br><div>On Sun, May 26, 2013 at 7:51 AM, Ioseb Dzmanashvili <span di=
r=3D=22ltr=22>&lt;<a href=3D=22mailto:ioseb.dzmanashvili=40gmail.com=22 t=
arget=3D=22=5Fblank=22>ioseb.dzmanashvili=40gmail.com</a>&gt;</span> wrot=
e:<br><blockquote type=3D=22cite=22><div>
                <div>Hi Mike,</div><div><br></div><div>Thanks for respons=
e=21</div><div><br></div><div><div><div>&gt; How are these different from=
 the =22collection=22 and =22item=22 link relations=3F</div>

<div>&gt; IOW, what can be described by =22property=22 and =22context=22 =
that cannot be described by =22collection=22 and =22item=22=3F</div><div>=
<br></div></div><div>It depends how we look at things. =46or example if i=
f we've a resource that is a photo(or video etc...) we can not describe i=
t as a collection. If we've resource which is a property of that photo we=
 can indicate the context resource of this photo with the =22context=22 l=
ink relation, as i understand and see it the =22collection=22 link relati=
on doesn't properly describe photo which definitely is not a collection o=
f items itself.</div>

<div><br></div><div>Another example is a file which has various attribute=
s(or properties), if for example i want to express these properties of th=
e file as links i think the =22property=22 link relation will be more cor=
rect rather than the =22item=22 link relation IMHO.</div>

</div><span><font color=3D=22=23888888=22><div><br></div><div>ioseb</div>=
</font></span><div><div>
                 =20
                <p style=3D=22color:=23a0a0a8=22>On Sunday, May 26, 2013 =
at 3:38 PM, mca wrote:</p><blockquote type=3D=22cite=22><div>
                    <span><div><div><p dir=3D=22ltr=22>How are these diff=
erent from the =22collection=22 and =22item=22 link relations=3F</p>
<p dir=3D=22ltr=22>IOW, what can be described by =22property=22 and =22co=
ntext=22 that cannot be described by =22collection=22 and =22item=22=3F</=
p>
<div>On May 26, 2013 1:22 PM, =22Ioseb Dzmanashvili=22 &lt;<a href=3D=22m=
ailto:ioseb.dzmanashvili=40gmail.com=22 target=3D=22=5Fblank=22>ioseb.dzm=
anashvili=40gmail.com</a>&gt; wrote:<br type=3D=22attribution=22><blockqu=
ote type=3D=22cite=22><div>



                <div>
                    Dear All,
                </div><div><br></div><div>I've submitted new draft for th=
e =22property=22 and =22context=22 link relation types:&nbsp;<a href=3D=22=
http://tools.ietf.org/html/draft-property-and-context-link-relations-00=22=
 target=3D=22=5Fblank=22>http://tools.ietf.org/html/draft-property-and-co=
ntext-link-relations-00</a></div>


<div><br></div><div>Description:&nbsp;</div><div><br></div><div><div>- Th=
is specification defines link relation types that may be used&nbsp;to exp=
ress the relationships between a resource and associated&nbsp;properties =
or between a resource and it's context.</div>


<div>- The =22property=22 and =22context=22 link relations are intentiona=
lly&nbsp;generic, and they can be used with multiple media types in a wid=
e&nbsp;variety of use cases</div></div><div>- The =22property=22 Link Rel=
ation Type:&nbsp;When included in a response, the =22property=22 link rel=
ation identifies a target resource that represents a property of the cont=
ext resource.</div>


<div><div>- The =22context=22 Link Relation Type:&nbsp;When included in a=
 response, the =22context=22 link relation identifies a target resource t=
hat represents a context document of which the context resource is a memb=
er.</div>


</div>
                <div><div><br></div><div><div>Could you please review=3F<=
/div><div>Thanks in advance=21</div></div><div><br></div><div>Best regard=
s,</div><div>ioseb</div><div>--&nbsp;</div><div><div>Ioseb Dzmanashvili</=
div><div>AzRy LLC</div>


<div>Software Architect</div><div><div>=238, Chachava str.</div><div>Tbil=
isi, 0159, Georgia</div></div><div>Mobile: +(995) 99753388</div><div><a h=
ref=3D=22http://github.com/ioseb=22 target=3D=22=5Fblank=22>github.com/io=
seb</a></div><div>


<a href=3D=22http://twitter.com/iosebi=22 target=3D=22=5Fblank=22>twitter=
.com/iosebi</a></div></div></div>
            <br>=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F<br>
apps-discuss mailing list<br>
<a href=3D=22mailto:apps-discuss=40ietf.org=22 target=3D=22=5Fblank=22>ap=
ps-discuss=40ietf.org</a><br>
<a href=3D=22https://www.ietf.org/mailman/listinfo/apps-discuss=22 target=
=3D=22=5Fblank=22>https://www.ietf.org/mailman/listinfo/apps-discuss</a><=
br>
<br></div></blockquote></div>
</div></div></span>
                 =20
                 =20
                 =20
                 =20
                </div></blockquote><div>
                    <br>
                </div>
            </div></div></div></blockquote></div><br></div>
</div></div></span>
                =20
                =20
                =20
                =20
                </blockquote>
                =20
                <div>
                    <br>
                </div>
            
--51a1f955_5577f8e1_1b1--


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Date: Sun, 26 May 2013 11:52:23 -0400
Message-ID: <CAKioOqtvVYApV3p+FBkn9P=3=0bW0J1=AUSZ=XCZA-oukycGzw@mail.gmail.com>
Subject: Re: NEW RELATION: property and context
From: Darrel Miller <darrel.miller@gmail.com>
To: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
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Hi Ioseb,

My concern about introducing the link relation type "property" is that you
would be encouraging the creation of very finely grained resources.  If
some resource has a set of related properties, I would rather see a single
link to that set of properties than a set of property links.  At that point
either a rel like "collection", as Mike suggests, or "describedby" would
seem sufficient.

Is the desire to create individual links for properties to facilitate
updating those properties?

Darrel



On Sun, May 26, 2013 at 7:24 AM, Ioseb Dzmanashvili <
ioseb.dzmanashvili@gmail.com> wrote:

> Dear All,
>
> I've submitted new draft for the "property" and "context" link relation
> types:
> http://tools.ietf.org/html/draft-property-and-context-link-relations-00
>
> Description:
>
> - This specification defines link relation types that may be used to
> express the relationships between a resource and associated properties or
> between a resource and it's context.
> - The "property" and "context" link relations are intentionally generic,
> and they can be used with multiple media types in a wide variety of use
> cases
> - The "property" Link Relation Type: When included in a response, the
> "property" link relation identifies a target resource that represents a
> property of the context resource.
> - The "context" Link Relation Type: When included in a response, the
> "context" link relation identifies a target resource that represents a
> context document of which the context resource is a member.
>
> Could you please review?
> Thanks in advance!
>
> Best regards,
> ioseb
> --
> Ioseb Dzmanashvili
> AzRy LLC
> Software Architect
> #8, Chachava str.
> Tbilisi, 0159, Georgia
> Mobile: +(995) 99753388
> github.com/ioseb
> twitter.com/iosebi
>
> _______________________________________________
> link-relations mailing list
> link-relations@ietf.org
> https://www.ietf.org/mailman/listinfo/link-relations
>
>

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<div dir=3D"ltr"><div>Hi Ioseb,</div><div>=A0</div><div>My concern about in=
troducing=A0the link relation type &quot;property&quot; is that you would b=
e encouraging the creation of very finely grained resources.=A0 If some res=
ource has a set of related properties, I would rather see a single link to =
that set of properties than a set of property links.=A0 At that point eithe=
r a rel like &quot;collection&quot;, as Mike suggests, or &quot;describedby=
&quot; would seem sufficient.</div>
<div>=A0</div><div>Is the desire to create individual links for properties =
to facilitate updating those properties?</div><div>=A0</div><div>Darrel</di=
v><div>=A0</div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmai=
l_quote">
On Sun, May 26, 2013 at 7:24 AM, Ioseb Dzmanashvili <span dir=3D"ltr">&lt;<=
a href=3D"mailto:ioseb.dzmanashvili@gmail.com" target=3D"_blank">ioseb.dzma=
nashvili@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Dear All,</div><div><br></div><div>I&#39;ve submitted new draft for th=
e &quot;property&quot; and &quot;context&quot; link relation types: <a href=
=3D"http://tools.ietf.org/html/draft-property-and-context-link-relations-00=
" target=3D"_blank">http://tools.ietf.org/html/draft-property-and-context-l=
ink-relations-00</a></div>
<div><br></div><div>Description:=A0</div><div><br></div><div>- This specifi=
cation defines link relation types that may be used to express the relation=
ships between a resource and associated properties or between a resource an=
d it&#39;s context.</div>
<div>- The &quot;property&quot; and &quot;context&quot; link relations are =
intentionally generic, and they can be used with multiple media types in a =
wide variety of use cases</div><div>- The &quot;property&quot; Link Relatio=
n Type: When included in a response, the &quot;property&quot; link relation=
 identifies a target resource that represents a property of the context res=
ource.</div>
<div>- The &quot;context&quot; Link Relation Type: When included in a respo=
nse, the &quot;context&quot; link relation identifies a target resource tha=
t represents a context document of which the context resource is a member.<=
/div>
<div><br></div><div>Could you please review?</div><div>Thanks in advance!</=
div><div><br></div><div>Best regards,</div><div>ioseb</div><span class=3D"H=
OEnZb"><font color=3D"#888888"><div>--=A0</div><div>Ioseb Dzmanashvili</div=
><div>
AzRy LLC</div><div>Software Architect</div><div>#8, Chachava str.</div><div=
>Tbilisi, 0159, Georgia</div><div>Mobile: +(995) 99753388</div><div><a href=
=3D"http://github.com/ioseb" target=3D"_blank">github.com/ioseb</a></div><d=
iv>
<a href=3D"http://twitter.com/iosebi" target=3D"_blank">twitter.com/iosebi<=
/a></div></font></span><br>_______________________________________________<=
br>
link-relations mailing list<br>
<a href=3D"mailto:link-relations@ietf.org">link-relations@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/link-relations" target=3D"=
_blank">https://www.ietf.org/mailman/listinfo/link-relations</a><br>
<br></blockquote></div><br></div>

--90e6ba6e8a20a26fe004dda104e0--

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From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
Subject: Re: NEW RELATION: property and context
Date: Sun, 26 May 2013 20:17:34 +0400
To: "darrel@tavis.ca" <darrel@tavis.ca>
Cc: "link-relations@ietf.org" <link-relations@ietf.org>
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Hi Darrel,

Thanks for response!

> My concern about introducing the link > relation type "property" is that y=
ou=20
> would be encouraging the creation of > very finely grained resources.

Well, i do not think it would encourage anyone to create finely grained reso=
urces. This rel i believe is useful for specific cases. At least i believe i=
t must be possible to create coarse grained resources when necessary.

> Is the desire to create individual links for properties to facilitate upda=
ting those properties?

Yes, this is one of the reasons i used this rel in several apps - to allow s=
electively retrieve and modify properties.

Cheers,
ioseb

Sent from my iPhone

On May 26, 2013, at 7:52 PM, Darrel Miller <darrel.miller@gmail.com> wrote:

> Hi Ioseb,
> =20
> My concern about introducing the link relation type "property" is that you=
 would be encouraging the creation of very finely grained resources.  If som=
e resource has a set of related properties, I would rather see a single link=
 to that set of properties than a set of property links.  At that point eith=
er a rel like "collection", as Mike suggests, or "describedby" would seem su=
fficient.
> =20
> Is the desire to create individual links for properties to facilitate upda=
ting those properties?
> =20
> Darrel
> =20
>=20
>=20
> On Sun, May 26, 2013 at 7:24 AM, Ioseb Dzmanashvili <ioseb.dzmanashvili@gm=
ail.com> wrote:
>> Dear All,
>>=20
>> I've submitted new draft for the "property" and "context" link relation t=
ypes: http://tools.ietf.org/html/draft-property-and-context-link-relations-0=
0
>>=20
>> Description:=20
>>=20
>> - This specification defines link relation types that may be used to expr=
ess the relationships between a resource and associated properties or betwee=
n a resource and it's context.
>> - The "property" and "context" link relations are intentionally generic, a=
nd they can be used with multiple media types in a wide variety of use cases=

>> - The "property" Link Relation Type: When included in a response, the "pr=
operty" link relation identifies a target resource that represents a propert=
y of the context resource.
>> - The "context" Link Relation Type: When included in a response, the "con=
text" link relation identifies a target resource that represents a context d=
ocument of which the context resource is a member.
>>=20
>> Could you please review?
>> Thanks in advance!
>>=20
>> Best regards,
>> ioseb
>> --=20
>> Ioseb Dzmanashvili
>> AzRy LLC
>> Software Architect
>> #8, Chachava str.
>> Tbilisi, 0159, Georgia
>> Mobile: +(995) 99753388
>> github.com/ioseb
>> twitter.com/iosebi
>>=20
>> _______________________________________________
>> link-relations mailing list
>> link-relations@ietf.org
>> https://www.ietf.org/mailman/listinfo/link-relations
>=20

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div style=3D"-webkit-text-size-adjust: aut=
o; ">Hi Darrel,</div><div style=3D"-webkit-text-size-adjust: auto; "><br></d=
iv><div style=3D"-webkit-text-size-adjust: auto; ">Thanks for response!</div=
><div style=3D"-webkit-text-size-adjust: auto; "><br></div><div><span style=3D=
"-webkit-text-size-adjust: auto;">&gt;&nbsp;</span><span style=3D"-webkit-te=
xt-size-adjust: auto; background-color: rgba(255, 255, 255, 0);">My concern a=
bout introducing&nbsp;the link &gt; relation type "property" is that you&nbs=
p;</span></div><div><span style=3D"-webkit-text-size-adjust: auto; backgroun=
d-color: rgba(255, 255, 255, 0);">&gt; would be encouraging the creation of &=
gt; very finely grained resources.</span><br><br>Well, i do not think it wou=
ld encourage anyone to create finely grained resources. This rel i believe i=
s useful for specific cases. At least i believe it must be possible to creat=
e coarse grained resources when necessary.</div><div><br></div><div>&gt;&nbs=
p;<span style=3D"-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -w=
ebkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composi=
tion-frame-color: rgba(77, 128, 180, 0.230469); -webkit-text-size-adjust: au=
to; ">Is the desire to create individual links for properties to facilitate u=
pdating those properties?</span></div><div><span style=3D"-webkit-tap-highli=
ght-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(=
175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180=
, 0.230469); -webkit-text-size-adjust: auto;"><br></span></div><div><span st=
yle=3D"-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-comp=
osition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame=
-color: rgba(77, 128, 180, 0.230469); -webkit-text-size-adjust: auto;">Yes, t=
his is one of the reasons i used this rel in several apps - to allow selecti=
vely retrieve and modify properties.</span></div><div><span style=3D"-webkit=
-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-c=
olor: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(7=
7, 128, 180, 0.230469); -webkit-text-size-adjust: auto;"><br></span></div><d=
iv><span style=3D"-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -=
webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-compos=
ition-frame-color: rgba(77, 128, 180, 0.230469); -webkit-text-size-adjust: a=
uto;">Cheers,</span></div><div><span style=3D"-webkit-tap-highlight-color: r=
gba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 22=
7, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469);=
 -webkit-text-size-adjust: auto;">ioseb<br></span><br><span style=3D"-webkit=
-text-size-adjust: auto;">Sent from my iPhone</span></div><div style=3D"-web=
kit-text-size-adjust: auto; "><br>On May 26, 2013, at 7:52 PM, Darrel Miller=
 &lt;<a href=3D"mailto:darrel.miller@gmail.com">darrel.miller@gmail.com</a>&=
gt; wrote:<br><br></div><div style=3D"-webkit-text-size-adjust: auto; "><spa=
n></span></div><blockquote type=3D"cite" style=3D"-webkit-text-size-adjust: a=
uto; "><div><div dir=3D"ltr"><div>Hi Ioseb,</div><div>&nbsp;</div><div>My co=
ncern about introducing&nbsp;the link relation type "property" is that you w=
ould be encouraging the creation of very finely grained resources.&nbsp; If s=
ome resource has a set of related properties, I would rather see a single li=
nk to that set of properties than a set of property links.&nbsp; At that poi=
nt either a rel like "collection", as Mike suggests, or "describedby" would s=
eem sufficient.</div>
<div>&nbsp;</div><div>Is the desire to create individual links for propertie=
s to facilitate updating those properties?</div><div>&nbsp;</div><div>Darrel=
</div><div>&nbsp;</div></div><div class=3D"gmail_extra"><br><br><div class=3D=
"gmail_quote">
On Sun, May 26, 2013 at 7:24 AM, Ioseb Dzmanashvili <span dir=3D"ltr">&lt;<a=
 href=3D"mailto:ioseb.dzmanashvili@gmail.com" target=3D"_blank">ioseb.dzmana=
shvili@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Dear All,</div><div><br></div><div>I've submitted new draft for the "pr=
operty" and "context" link relation types: <a href=3D"http://tools.ietf.org/=
html/draft-property-and-context-link-relations-00" target=3D"_blank">http://=
tools.ietf.org/html/draft-property-and-context-link-relations-00</a></div>
<div><br></div><div>Description:&nbsp;</div><div><br></div><div>- This speci=
fication defines link relation types that may be used to express the relatio=
nships between a resource and associated properties or between a resource an=
d it's context.</div>
<div>- The "property" and "context" link relations are intentionally generic=
, and they can be used with multiple media types in a wide variety of use ca=
ses</div><div>- The "property" Link Relation Type: When included in a respon=
se, the "property" link relation identifies a target resource that represent=
s a property of the context resource.</div>
<div>- The "context" Link Relation Type: When included in a response, the "c=
ontext" link relation identifies a target resource that represents a context=
 document of which the context resource is a member.</div>
<div><br></div><div>Could you please review?</div><div>Thanks in advance!</d=
iv><div><br></div><div>Best regards,</div><div>ioseb</div><span class=3D"HOE=
nZb"><font color=3D"#888888"><div>--&nbsp;</div><div>Ioseb Dzmanashvili</div=
><div>
AzRy LLC</div><div>Software Architect</div><div>#8, Chachava str.</div><div>=
Tbilisi, 0159, Georgia</div><div>Mobile: +(995) 99753388</div><div><a href=3D=
"http://github.com/ioseb" target=3D"_blank">github.com/ioseb</a></div><div>
<a href=3D"http://twitter.com/iosebi" target=3D"_blank">twitter.com/iosebi</=
a></div></font></span><br>_______________________________________________<br=
>
link-relations mailing list<br>
<a href=3D"mailto:link-relations@ietf.org">link-relations@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/link-relations" target=3D"_=
blank">https://www.ietf.org/mailman/listinfo/link-relations</a><br>
<br></blockquote></div><br></div>
</div></blockquote></body></html>=

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From: "Markus Lanthaler" <markus.lanthaler@gmx.net>
To: "'Ioseb Dzmanashvili'" <ioseb.dzmanashvili@gmail.com>
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Subject: RE: NEW RELATION: property and context
Date: Sun, 26 May 2013 18:59:49 -0300
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Ioseb,

> I've submitted new draft for the "property" and "context" link
> relation types:=20
> =
http://tools.ietf.org/html/draft-property-and-context-link-relations-00

I have a hard time understanding what your are trying to achieve.

Just as Jan mentioned in another thread, the name of the link rels =
implies to me that you are kind of reinventing RDF. JSON-LD [1], e.g., =
also has the notion of a context and allows JSON documents to be linked =
to JSON-LD contexts - although using a full URL as link rel instead of a =
token.


On Sunday, May 26, 2013 8:22 AM, Ioseb Dzmanashvili wrote:
> > Is the desire to create individual links for properties to
> > facilitate updating those properties?
>
> Yes, this is one of the reasons i used this rel in several
> apps - to allow selectively retrieve and modify properties.

How do you know which link to follow in your apps? Do you do that based =
on the title attribute?


Cheers,
Markus


[1] http://www.w3.org/TR/json-ld/


--
Markus Lanthaler
@markuslanthaler


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Date: Mon, 27 May 2013 11:28:11 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: Markus Lanthaler <markus.lanthaler@gmx.net>
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Subject: Re: NEW RELATION: property and context
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--51a30b0b_1d4ed43b_1b1
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Hi Markus,

> I have a hard time understanding what your are trying to achieve.
> Just as Jan mentioned in another thread, the name of the link rels implies to me that you are kind of reinventing RDF. JSON-LD [1], e.g., also has the notion of a context and allows JSON documents to be linked to JSON-LD contexts - although using a full URL as link rel instead of a token.

My RDF knowledge is rudimentary, but what i can say for sure the "context" link relation and "@context" from JSON-LD are different things. Here is what JSON-LD[1] documentation says: "The secret lies in the @context, which instructs Linked Data-aware processors on how to interpret the JSON object." which is not the case for the "context" link relation... it's much simpler and must be used to indicate that a resource is a member of another resource and only in cases when we do not have collection/item relationships. For example if i share resource URI which is a member of another resource i can use the "context" link rel to inform processing agent that shared resource is a member of another resource.

> How do you know which link to follow in your apps? Do you do that based on the title attribute?

No, title attribute is only used for user interfaces i do not think anyone uses it for other purposes. In my apps i only use rel attribute values to decide which link to follow.  

[1]. http://json-ld.org/ 

Cheers,
isoeb

On Monday, May 27, 2013 at 1:59 AM, Markus Lanthaler wrote:

> Ioseb,
> 
> > I've submitted new draft for the "property" and "context" link
> > relation types: 
> > http://tools.ietf.org/html/draft-property-and-context-link-relations-00
> > 
> 
> 
> I have a hard time understanding what your are trying to achieve.
> 
> Just as Jan mentioned in another thread, the name of the link rels implies to me that you are kind of reinventing RDF. JSON-LD [1], e.g., also has the notion of a context and allows JSON documents to be linked to JSON-LD contexts - although using a full URL as link rel instead of a token.
> 
> 
> On Sunday, May 26, 2013 8:22 AM, Ioseb Dzmanashvili wrote:
> > > Is the desire to create individual links for properties to
> > > facilitate updating those properties?
> > > 
> > 
> > 
> > Yes, this is one of the reasons i used this rel in several
> > apps - to allow selectively retrieve and modify properties.
> > 
> 
> 
> How do you know which link to follow in your apps? Do you do that based on the title attribute?
> 
> 
> Cheers,
> Markus
> 
> 
> [1] http://www.w3.org/TR/json-ld/
> 
> 
> --
> Markus Lanthaler
> @markuslanthaler
> 
> 



--51a30b0b_1d4ed43b_1b1
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Content-Disposition: inline


                <div>Hi Markus,</div><div><br></div><div><div>&gt; I have=
 a hard time understanding what your are trying to achieve.</div><div>&gt=
; Just as Jan mentioned in another thread, the name of the link rels impl=
ies to me that you are kind of reinventing RD=46. JSON-LD =5B1=5D, e.g., =
also has the notion of a context and allows JSON documents to be linked t=
o JSON-LD contexts - although using a full URL as link rel instead of a t=
oken.</div><div><br></div><div>My RD=46 knowledge is rudimentary, but wha=
t i can say for sure the =22context=22 link relation and =22=40context=22=
 from JSON-LD are different things. Here is what JSON-LD=5B1=5D documenta=
tion says: =22The secret lies in the =40context, which instructs Linked D=
ata-aware processors on how to interpret the JSON object.=22 which is not=
 the case for the =22context=22 link relation... it's much simpler and mu=
st be used to indicate that a resource is a member of another resource an=
d only in cases when we do not have collection/item relationships. =46or =
example if i share resource URI which is a member of another resource i c=
an use the =22context=22 link rel to inform processing agent that shared =
resource is a member of another resource.</div><div><br></div><div>&gt; H=
ow do you know which link to follow in your apps=3F Do you do that based =
on the title attribute=3F</div><div><br></div><div>No, title attribute is=
 only used for user interfaces i do not think anyone uses it for other pu=
rposes. In my apps i only use rel attribute values to decide which link t=
o follow. &nbsp;</div><div><br></div><div>=5B1=5D. http://json-ld.org/&nb=
sp;</div><div><br></div></div><div>Cheers,</div><div>isoeb</div>
                =20
                <p style=3D=22color: =23A0A0A8;=22>On Monday, May 27, 201=
3 at 1:59 AM, Markus Lanthaler wrote:</p>
                <blockquote type=3D=22cite=22 style=3D=22border-left-styl=
e:solid;border-width:1px;margin-left:0px;padding-left:10px;=22>
                    <span><div><div><div>Ioseb,</div><div><br></div><bloc=
kquote type=3D=22cite=22><div><div>I've submitted new draft for the =22pr=
operty=22 and =22context=22 link</div><div>relation types: </div><div><a =
href=3D=22http://tools.ietf.org/html/draft-property-and-context-link-rela=
tions-00=22>http://tools.ietf.org/html/draft-property-and-context-link-re=
lations-00</a></div></div></blockquote><div><br></div><div>I have a hard =
time understanding what your are trying to achieve.</div><div><br></div><=
div>Just as Jan mentioned in another thread, the name of the link rels im=
plies to me that you are kind of reinventing RD=46. JSON-LD =5B1=5D, e.g.=
, also has the notion of a context and allows JSON documents to be linked=
 to JSON-LD contexts - although using a full URL as link rel instead of a=
 token.</div><div><br></div><div><br></div><div>On Sunday, May 26, 2013 8=
:22 AM, Ioseb Dzmanashvili wrote:</div><blockquote type=3D=22cite=22><div=
><blockquote type=3D=22cite=22><div><div>Is the desire to create individu=
al links for properties to</div><div>facilitate updating those properties=
=3F</div></div></blockquote><div><br></div><div>Yes, this is one of the r=
easons i used this rel in several</div><div>apps - to allow selectively r=
etrieve and modify properties.</div></div></blockquote><div><br></div><di=
v>How do you know which link to follow in your apps=3F Do you do that bas=
ed on the title attribute=3F</div><div><br></div><div><br></div><div>Chee=
rs,</div><div>Markus</div><div><br></div><div><br></div><div>=5B1=5D <a h=
ref=3D=22http://www.w3.org/TR/json-ld/=22>http://www.w3.org/TR/json-ld/</=
a></div><div><br></div><div><br></div><div>--</div><div>Markus Lanthaler<=
/div><div>=40markuslanthaler</div></div></div></span>
                =20
                =20
                =20
                =20
                </blockquote>
                =20
                <div>
                    <br>
                </div>
            
--51a30b0b_1d4ed43b_1b1--


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Date: Mon, 27 May 2013 12:06:15 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: janalgermissen1und1@mac.com
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Subject: Re: [apps-discuss] NEW RELATION: property and context
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--51a313f7_354fe9f9_1b1
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Jan,

> Let's try a different way: What is a 'property'?

It's a data member. For example "title" or "summary" of an article.

ioseb  

On Monday, May 27, 2013 at 11:46 AM, janalgermissen1und1@mac.com wrote:

> 
> On 27.05.2013, at 09:36, Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com (mailto:ioseb.dzmanashvili@gmail.com)> wrote:
> 
> > 
> > > What is the difference exactly between a property and a link?
> > 
> > Sorry, i do not get this question? 
> 
> Let's try a different way:
> 
> What is a 'property'?
> 
> Jan
> 
> 
> > 
> > Cheers,
> > ioseb 
> > On Sunday, May 26, 2013 at 9:00 PM, Jan Algermissen wrote:
> > 
> > > Ioseb,
> > > 
> > > On 26.05.2013, at 13:21, Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com (mailto:ioseb.dzmanashvili@gmail.com)> wrote:
> > > 
> > > > Dear All,
> > > > 
> > > > I've submitted new draft for the "property" and "context" link relation types: http://tools.ietf.org/html/draft-property-and-context-link-relations-00
> > > 
> > > It feels a bit like reinventing RDF.
> > > 
> > > What is the difference exactly between a property and a link?
> > > 
> > > Jan
> > > 
> > > 
> > > > 
> > > > Description:
> > > > 
> > > > - This specification defines link relation types that may be used to express the relationships between a resource and associated properties or between a resource and it's context.
> > > > - The "property" and "context" link relations are intentionally generic, and they can be used with multiple media types in a wide variety of use cases
> > > > - The "property" Link Relation Type: When included in a response, the "property" link relation identifies a target resource that represents a property of the context resource.
> > > > - The "context" Link Relation Type: When included in a response, the "context" link relation identifies a target resource that represents a context document of which the context resource is a member.
> > > > 
> > > > Could you please review?
> > > > Thanks in advance!
> > > > 
> > > > Best regards,
> > > > ioseb
> > > > --
> > > > Ioseb Dzmanashvili
> > > > AzRy LLC
> > > > Software Architect
> > > > #8, Chachava str.
> > > > Tbilisi, 0159, Georgia
> > > > Mobile: +(995) 99753388
> > > > github.com/ioseb (http://github.com/ioseb)
> > > > twitter.com/iosebi (http://twitter.com/iosebi)
> > > > _______________________________________________
> > > > apps-discuss mailing list
> > > > apps-discuss@ietf.org (mailto:apps-discuss@ietf.org)
> > > > https://www.ietf.org/mailman/listinfo/apps-discuss
> > > > 
> > > 
> > > 
> > 
> > 
> 
> 
> 



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                <div>Jan,</div><div><br></div><div>&gt; Let's try a diffe=
rent way: What is a 'property'=3F</div><div><br></div><div>It's a data me=
mber. =46or example =22title=22 or =22summary=22 of an article.</div><div=
><br></div><div>ioseb&nbsp;</div>
                =20
                <p style=3D=22color: =23A0A0A8;=22>On Monday, May 27, 201=
3 at 11:46 AM, janalgermissen1und1=40mac.com wrote:</p>
                <blockquote type=3D=22cite=22 style=3D=22border-left-styl=
e:solid;border-width:1px;margin-left:0px;padding-left:10px;=22>
                    <span><div><div><div><br></div><div>On 27.05.2013, at=
 09:36, Ioseb Dzmanashvili &lt;<a href=3D=22mailto:ioseb.dzmanashvili=40g=
mail.com=22>ioseb.dzmanashvili=40gmail.com</a>&gt; wrote:</div><div><br><=
/div><blockquote type=3D=22cite=22><div><div><br></div><blockquote type=3D=
=22cite=22><div>What is the difference exactly between a property and a l=
ink=3F</div></blockquote><div><br></div><div>Sorry, i do not get this que=
stion=3F </div></div></blockquote><div><br></div><div>Let's try a differe=
nt way:</div><div><br></div><div>What is a 'property'=3F</div><div><br></=
div><div>Jan</div><div><br></div><div><br></div><blockquote type=3D=22cit=
e=22><div><div><br></div><div>Cheers,</div><div>ioseb </div><div>On Sunda=
y, May 26, 2013 at 9:00 PM, Jan Algermissen wrote:</div><div><br></div><b=
lockquote type=3D=22cite=22><div><div>Ioseb,</div><div><br></div><div>On =
26.05.2013, at 13:21, Ioseb Dzmanashvili &lt;<a href=3D=22mailto:ioseb.dz=
manashvili=40gmail.com=22>ioseb.dzmanashvili=40gmail.com</a>&gt; wrote:</=
div><div><br></div><blockquote type=3D=22cite=22><div><div>Dear All,</div=
><div><br></div><div>I've submitted new draft for the =22property=22 and =
=22context=22 link relation types: <a href=3D=22http://tools.ietf.org/htm=
l/draft-property-and-context-link-relations-00=22>http://tools.ietf.org/h=
tml/draft-property-and-context-link-relations-00</a></div></div></blockqu=
ote><div><br></div><div>It feels a bit like reinventing RD=46.</div><div>=
<br></div><div>What is the difference exactly between a property and a li=
nk=3F</div><div><br></div><div>Jan</div><div><br></div><div><br></div><bl=
ockquote type=3D=22cite=22><div><div><br></div><div>Description:</div><di=
v><br></div><div>- This specification defines link relation types that ma=
y be used to express the relationships between a resource and associated =
properties or between a resource and it's context.</div><div>- The =22pro=
perty=22 and =22context=22 link relations are intentionally generic, and =
they can be used with multiple media types in a wide variety of use cases=
</div><div>- The =22property=22 Link Relation Type: When included in a re=
sponse, the =22property=22 link relation identifies a target resource tha=
t represents a property of the context resource.</div><div>- The =22conte=
xt=22 Link Relation Type: When included in a response, the =22context=22 =
link relation identifies a target resource that represents a context docu=
ment of which the context resource is a member.</div><div><br></div><div>=
Could you please review=3F</div><div>Thanks in advance=21</div><div><br><=
/div><div>Best regards,</div><div>ioseb</div><div>--</div><div>Ioseb Dzma=
nashvili</div><div>AzRy LLC</div><div>Software Architect</div><div>=238, =
Chachava str.</div><div>Tbilisi, 0159, Georgia</div><div>Mobile: +(995) 9=
9753388</div><div><a href=3D=22http://github.com/ioseb=22>github.com/iose=
b</a></div><div><a href=3D=22http://twitter.com/iosebi=22>twitter.com/ios=
ebi</a></div><div>=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F</div><div>apps-discuss mailing list</div><div><a href=3D=22mail=
to:apps-discuss=40ietf.org=22>apps-discuss=40ietf.org</a></div><div><a hr=
ef=3D=22https://www.ietf.org/mailman/listinfo/apps-discuss=22>https://www=
.ietf.org/mailman/listinfo/apps-discuss</a></div></div></blockquote></div=
></blockquote></div></blockquote></div></div></span>
                =20
                =20
                =20
                =20
                </blockquote>
                =20
                <div>
                    <br>
                </div>
            
--51a313f7_354fe9f9_1b1--


From dret@berkeley.edu  Mon May 27 07:20:13 2013
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From: Erik Wilde <dret@berkeley.edu>
Subject: Re: NEW RELATION: property and context
Date: Mon, 27 May 2013 07:20:01 -0700
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hello ioseb.

On May 27, 2013, at 0:28, Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com> w=
rote:
> No, title attribute is only used for user interfaces i do not think anyone=
 uses it for other purposes. In my apps i only use rel attribute values to d=
ecide which link to follow.

i guess what markus wanted to know is how clients decide which link to follo=
w for a specific property, if you have more than one. there must be some "pr=
operty identifier" somewhere, so that clients can distinguish, right? i was w=
ondering about the same thing.

thanks and cheers,

dret.=

From ioseb.dzmanashvili@gmail.com  Mon May 27 08:09:36 2013
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Date: Mon, 27 May 2013 19:09:30 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: Erik Wilde <dret@berkeley.edu>
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Hi Erik,

> i guess what markus wanted to know is how clients decide which link to follow for a specific property, if you have more than one. there must be some "property identifier" somewhere, so that clients can distinguish, right? i was wondering about the same thing.

Thanks for clarification! When i use this relation type in GUI apps the "property" rel is enough to distinguish property links from other links. But in addition i usually use application specific profiles describing link relation extensions for particular property types. For example:

Link: </book;title>; rel="property http://rels.service.org/properties#title"; title="Human friendly text here..."

cheers,
ioseb


On Monday, May 27, 2013 at 6:20 PM, Erik Wilde wrote:

> hello ioseb.
> 
> On May 27, 2013, at 0:28, Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com (mailto:ioseb.dzmanashvili@gmail.com)> wrote:
> > No, title attribute is only used for user interfaces i do not think anyone uses it for other purposes. In my apps i only use rel attribute values to decide which link to follow.
> 
> 
> i guess what markus wanted to know is how clients decide which link to follow for a specific property, if you have more than one. there must be some "property identifier" somewhere, so that clients can distinguish, right? i was wondering about the same thing.
> 
> thanks and cheers,
> 
> dret. 


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                <div><div>Hi Erik,</div><div><br></div><div>&gt; i guess =
what markus wanted to know is how clients decide which link to follow for=
 a specific property, if you have more than one. there must be some =22pr=
operty identifier=22 somewhere, so that clients can distinguish, right=3F=
 i was wondering about the same thing.</div><div><br></div><div>Thanks fo=
r clarification=21 When i use this relation type in GUI apps the =22prope=
rty=22 rel is enough to distinguish property links from other links. But =
in addition i usually use application specific profiles describing link r=
elation extensions for particular property types. =46or example:</div><di=
v><br></div><div>Link: &lt;/book;title&gt;; rel=3D=22property http://rels=
.service.org/properties=23title=22; title=3D=22Human friendly text here..=
.=22</div><div><br></div><div>cheers,</div><div>ioseb</div></div>
                =20
                <p style=3D=22color: =23A0A0A8;=22>On Monday, May 27, 201=
3 at 6:20 PM, Erik Wilde wrote:</p>
                <blockquote type=3D=22cite=22 style=3D=22border-left-styl=
e:solid;border-width:1px;margin-left:0px;padding-left:10px;=22>
                    <span><div><div><div>hello ioseb.</div><div><br></div=
><div>On May 27, 2013, at 0:28, Ioseb Dzmanashvili &lt;<a href=3D=22mailt=
o:ioseb.dzmanashvili=40gmail.com=22>ioseb.dzmanashvili=40gmail.com</a>&gt=
; wrote:</div><blockquote type=3D=22cite=22><div>No, title attribute is o=
nly used for user interfaces i do not think anyone uses it for other purp=
oses. In my apps i only use rel attribute values to decide which link to =
follow.</div></blockquote><div><br></div><div>i guess what markus wanted =
to know is how clients decide which link to follow for a specific propert=
y, if you have more than one. there must be some =22property identifier=22=
 somewhere, so that clients can distinguish, right=3F i was wondering abo=
ut the same thing.</div><div><br></div><div>thanks and cheers,</div><div>=
<br></div><div>dret.</div></div></div></span>
                =20
                =20
                =20
                =20
                </blockquote>
                =20
                <div>
                    <br>
                </div>
            
--51a3772a_579be4f1_1b1--


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To: Erik Wilde <dret@berkeley.edu>
Subject: Re: [apps-discuss] NEW RELATION: property and context
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On 2013/05/27 23:20, Erik Wilde wrote:
> hello ioseb.
>
> On May 27, 2013, at 0:28, Ioseb Dzmanashvili<ioseb.dzmanashvili@gmail.com>  wrote:
>> No, title attribute is only used for user interfaces i do not think anyone uses it for other purposes. In my apps i only use rel attribute values to decide which link to follow.
>
> i guess what markus wanted to know is how clients decide which link to follow for a specific property, if you have more than one. there must be some "property identifier" somewhere, so that clients can distinguish, right? i was wondering about the same thing.

Also, having only a single property at the end of a link will be rare. 
Usually it's a collection of properties. So I'm wondering why the 
relation name is not "properties".

Regards,   Martin.

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Subject: RE: NEW RELATION: property and context
Date: Wed, 29 May 2013 00:57:08 +0200
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On Monday, May 27, 2013 9:28 AM, Ioseb Dzmanashvili wrote:

> My RDF knowledge is rudimentary, but what i can say for sure the
> "context" link relation and "@context" from JSON-LD are different
> things.

Of course. I just mentioned it because they use exactly the same =
terminology and I was not the only one to be confused by this.


> Here is what JSON-LD[1] documentation says: "The secret lies
> in the @context, which instructs Linked Data-aware processors on how
> to interpret the JSON object." which is not the case for the "context"
> link relation... it's much simpler and must be used to indicate that a
> resource is a member of another resource and only in cases when we do
> not have collection/item relationships.

Sorry, I don't understand this. It indicates that resource I is a member =
of a resource C but only if resource I is not an item of collection C!? =
In which case then? Aren't you contradicting yourself?


> For example if i share
> resource URI which is a member of another resource i can use the
> "context" link rel to inform processing agent that shared resource is
> a member of another resource.

Unfortunately, this doesn't make it any clearer to me.


> > How do you know which link to follow in your apps? Do you do that
> > based on the title attribute?
>
> No, title attribute is only used for user interfaces i do not think
> anyone uses it for other purposes. In my apps i only use rel attribute
> values to decide which link to follow.

As Erik already clarified in another thread I'm interested in how your =
application is able to select the correct link to follow if you have =
multiple links, e.g.:

Link: </propertyA>; rel=3D"property"; title=3D"Property A"
Link: </propertyB>; rel=3D"property"; title=3D"Property B"
Link: </propertyC>; rel=3D"property"; title=3D"Property C"

Since there's no other information than the rel and the title (and the =
URL) you obviously would have to program against the title. If you need =
another rel as you showed in the other thread:

> Link: </book;title>; rel=3D"property =
http://rels.service.org/properties#title";
>       title=3D"Human friendly text here..."

Then why do you need "property"? Isn't =
http://rels.service.org/properties#title all you need then?



--
Markus Lanthaler
@markuslanthaler


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Date: Thu, 30 May 2013 00:07:34 +0400
From: Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
To: Markus Lanthaler <markus.lanthaler@gmx.net>
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Subject: Re: [apps-discuss] NEW RELATION: property and context
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On Wednesday, May 29, 2013 at 10:39 PM, Markus Lanthaler wrote:
> On Wednesday, May 29, 2013 9:35 AM, Ioseb Dzmanashvili wrote:
> > Here is the example:
> > =20
> > *** REQUEST: =46etch photo ***
> > > GET /article/photo HTTP/1.1
> > > Host: service.org (http://service.org)
> > =20
> > =20
> > =20
> > *** RESPONSE: Photo representation ***
> > < HTTP/1.1 200 OK
> > < Content-Type: image/jpeg
> > < Content-Length: ...
> > < Link: </article/photo;prop1>; rel=3D=22property=22; title=3D=22Prop=
erty 1=22,
> > < </article/photo;prop2>; rel=3D=22property=22; title=3D=22Property 2=
=22,
> > < </article/photo>; rel=3D=22self=22; title=3D=22...=22,
> > < </article>; rel=3D=22context=22 title=3D=22Thousand Leagues Under t=
he Sea=22
> > < =20
> > < =5BBINARY DATA HERE=5D
> > =20
> > *** REQUEST: =46etch one of the properties ***
> > > GET /article/photo;prop1
> > > Host: service.org (http://service.org)
> > =20
> =20
> =20
> =20
> This is right at the heart of my first question: How does the client kn=
ow to fetch /article/photo;prop1 instead of /article/photo;prop2=3F
> =20
> There are only two options here: a) code against the target URL or b) c=
ode against the title attribute. Since you said b) is used exclusively fo=
r rendering purposes I assume you would code your client against the URL =
(or parts thereof) which would go against the fundamental idea of typed l=
inks.
Both options are wrong. =20

> a) code against the target URL or

1) the =22property=22 link relation is enough to indicate that target res=
ource is a property and allow agents to distinguish these links form othe=
rs; =20
2) additional semantics can be provided with extension link relations and=
 there is nothing wrong with it, it doesn't violate anything nor can be c=
onsidered as anti pattern.
3) your argument implicitly claims that there exists only M2M interaction=
 which is also wrong. there are also GUI apps for which it's enough to ju=
st know that some of links are properties(identified by the =22property=22=
 relation)
4) having a general purpose link relation makes it useful and reusable fr=
om application to application, it eliminates need to redefine each time w=
hat =22property=22 is and is media format agnostic. shared understanding =
is important i believe and additional semantics for each specific propert=
y is solvable on another level.

> b) is used exclusively for rendering purposes I assume you would code y=
our client against the URL (or parts thereof) which would go against the =
fundamental idea of typed links.

very strange assumption. =20
 =20
> > *** RESPONSE: property representation ***
> > < HTTP/1.1 200 OK
> > < Content-Type: text/plain
> > < Link: </article/photo;prop1>; rel=3D=22self=22 title=3D=22...=22,
> > < </article/photo>; rel=3D=22context=22; title=3D=22...=22
> > < =20
> > < =5BPROPERTY VALUE HERE=5D
> > =20
> > Based on this example, i'm not sure how the =22describes=22 link rela=
tion
> > can be used instead of the =22context=22 link relation when by defini=
tion
> > the =22describes=22 relations says that: =22The relationship A 'descr=
ibes' B
> > asserts that resource A provides a description of resource B. There
> > are no constraints on the format or representation of either A or B,
> > neither are there any further constraints on either resource.=22=3F I=
n
> > this particular example =22context=22 indicates resource to which the=

> > /article/photo or /article/photo;prop1 resources belong and context
> > resources do not provide any description of those members.
> =20
> =20
> =20
> Hmm.. I do partly agree for the /article/photo -> /article link but wou=
ld argue that /article/photo;prop1 does *describe* /article/photo. Simila=
rly it could be argued that /article/photo *isDescribedBy* /article.
Are you sure that =22describedby=22 and =22describes=22 relations give en=
ough semantics to agents=3F is not it necessary to provide  some kind of =
description=3F if one describes another how it is described=3F  and what =
it gives to agent particularly in M2M interaction case=3F do automated ag=
ents strangely become smart and happy when they just identify typed links=
 annotated with those relations=3F
> > What i
> > want to say here it's a simple relationship between two resources
> > without any descriptions etc=E2=80=A6
> =20
> =20
> =20
> So you want to express a relationship without any specific semantics=3F=
 In that case, why do you need a typed link=3F Can't you just use a untyp=
ed one=3F
Than how GUI or automated agent will distinguish resources which are prop=
erties accessible individually from for example the =22edit=22 or =22edit=
-form=22 links=3F or implementations are going to follow some convention =
like: if a link doesn't have relation just display it=3F or ignore 'em=3F=
 or=3F
> > Same with the =22collection=22 and =22item=22 relationships, i do not=
 see(or
> > maybe do not understand=3F) how /article and /article/photo resources=

> > are collections=3F
> =20
> =20
> =20
> If article would be called slideshow or gallery, would you see it then=3F=
 :-) You could say that an article is a collection of information, some p=
rose, some images, maybe some movies etc.
but i didn't say =22gallery=22 or =22slideshow=22 in my example. what if =
a resource is an ID card which has only one and only one photo of a perso=
n=3F do you think that ID card or driving license are collections=3F and =
yes i can not say that an article is a collection, not because we can not=
 say it generally but because what you say is overgeneralisation of thing=
s. we can discuss everything as a collection and item but what you say ma=
kes me think that =22collection=22, =22item=22, =22describes=22 and =22de=
scribedby=22 link relations suddenly solved whole world problems.
> > if yes, collections of what=3F generally we can say
> > that everything is an item but taking the definition of the =22item=22=

> > link relation: =22The target IRI points to a resource that is a membe=
r
> > of the collection represented by the context IRI.=22 Now if we consid=
er
> > following example:
> > =20
> > < HTTP/1.1 200 OK
> > < Content-Type: =E2=80=A6
> > < Content-Length: =E2=80=A6
> > < Link: </article>; rel=3D=22self=22; title=3D=22=E2=80=A6=22,
> > < </article/photo>; rel=3D=22enclosure=22 title=3D=22=E2=80=A6=22
> > <
> > < =5BREST O=46 CONTENT HERE=5D
> > =20
> > can we say for /article/photo resource that context IRI represents a
> > collection=3F or does the /article resource somehow =22describes=22 t=
he
> > /article/photo resource=3F or is /article/photo resource is an item
> > which belongs to collection=3F
> =20
> =20
> =20
> Could be any of those. If the article describe the photo you could use =
=22describes=22. If the article is more a collection of information (e.g.=
 pictures as in a gallery) you could say it is a =22collection=22 and the=
 photo is an =22item=22.
could you please point me to the example how article describes photo=3F i=
t would be really helpful for me=21.  I believe i know and clearly unders=
tand when i can say that an article is a collection, but does it make who=
le world a collection=3F again, is not it overgeneralisation and oversimp=
lification of things=3F =20
> =20
> =20
> Btw. On mailing lists it is typically considered as a best practice to =
write text-only mails. This makes it much easier to quote etc. Could you =
please update your client settings to send text-only mails instead of HTM=
L formatted mails. Thanks a lot=21
done, thanks for letting me know. =20
> =20
> --
> Markus Lanthaler
> =40markuslanthaler

cheers, =20
ioseb


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To: "'Ioseb Dzmanashvili'" <ioseb.dzmanashvili@gmail.com>
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In-Reply-To: <87194C5A218E42F9AA9B81339D2C1BC5@gmail.com>
Subject: RE: [apps-discuss] NEW RELATION: property and context
Date: Sat, 1 Jun 2013 01:30:59 +0200
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On Wednesday, May 29, 2013 10:08 PM, Ioseb Dzmanashvili wrote:
> > This is right at the heart of my first question: How does the client
> know to fetch /article/photo;prop1 instead of /article/photo;prop2?
> >
> > There are only two options here: a) code against the target URL or =
b)
> > code against the title attribute. Since you said b) is used =
exclusively
> > for rendering purposes I assume you would code your client against =
the
> > URL (or parts thereof) which would go against the fundamental idea =
of
> > typed links.
>
> Both options are wrong.
>=20
> > a) code against the target URL or
>=20
> 1) the "property" link relation is enough to indicate that target
> resource is a property and allow agents to distinguish these links =
form
> others;

Yes, distinguish from other rels, but not enough to distinguish two =
properties as in your example:

*** RESPONSE: Photo representation ***
 HTTP/1.1 200 OK
 Content-Type: image/jpeg
 Content-Length: ...
 Link: </article/photo;prop1>; rel=3D"property"; title=3D"Property 1",
       </article/photo;prop2>; rel=3D"property"; title=3D"Property 2",


> 2) additional semantics can be provided with extension link relations
> and there is nothing wrong with it, it doesn't violate anything nor =
can
> be considered as anti pattern.

Right, but the question I ask myself then is why you need the generic =
"property" relation then.


> 3) your argument implicitly claims that there exists only M2M
> interaction which is also wrong. there are also GUI apps for which =
it's
> enough to just know that some of links are properties(identified by =
the
> "property" relation)

Hmm... it helps you to render just the property links, yes. But then the =
user has to choose the right link based on the title attribute.


> 4) having a general purpose link relation makes it useful and reusable
> from application to application, it eliminates need to redefine each
> time what "property" is and is media format agnostic. shared
> understanding is important i believe and additional semantics for each
> specific property is solvable on another level.

Right, but property is so generic that I have problems seeing its value. =
This goes a bit in the direction of Jan's question. Would you think the =
following would be a reasonable design choice:

   Link: </a/resource>; rel=3D"link"

This allows your application to render all "link" links but by itself =
doesn't add any semantics beyond the ones the Link header already has.


[...]
> > Hmm.. I do partly agree for the /article/photo -> /article link but
> > would argue that /article/photo;prop1 does *describe* =
/article/photo.
> > Similarly it could be argued that /article/photo *isDescribedBy*
> > /article.
>
> Are you sure that "describedby" and "describes" relations give enough
> semantics to agents? is not it necessary to provide  some kind of
> description?

Yes, this alongside the media type of the referenced/referencing =
resource provides enough semantics for an agent to do something useful =
with it.


> if one describes another how it is described?

The media type defines that. One obvious answer is e.g. RDF.


> and what it
> gives to agent particularly in M2M interaction case? do automated
> agents strangely become smart and happy when they just identify typed
> links annotated with those relations?

No, but they do know that they can follow the link to get a description =
which they (may) understand. You could argue that the same is true for =
properties/contexts but that would mean that you, e.g., would have to =
define media types for all properties so that clients can express what =
they understand. Just returning a string as text/plain for a title =
property is definitely not enough to enable M2M communication without =
having to rely on out-of-band information.


> > So you want to express a relationship without any specific =
semantics?
> > In that case, why do you need a typed link? Can't you just use a
> > untyped one?
>
> Than how GUI or automated agent will distinguish resources which are
> properties accessible individually from for example the "edit" or
> "edit-form" links? or implementations are going to follow some
> convention like: if a link doesn't have relation just display it? or
> ignore 'em? or?

Displaying just links without relation would be a reasonable design =
choice IMO because they do not provide enough semantics to be handled =
automatically. Thus, the choice has to be made by the (human) user which =
interprets the link's label, i.e., the title attribute.


> > If article would be called slideshow or gallery, would you see it
> > then? :-) You could say that an article is a collection of
> > information, some prose, some images, maybe some movies etc.
>
> but i didn't say "gallery" or "slideshow" in my example. what if a
> resource is an ID card which has only one and only one photo of a
> person? do you think that ID card or driving license are collections?

First of all, I don't understand why such a link would have to be =
exposed on the HTTP layer. If you really want to, I think in such a =
specific case it makes much more sense to use a URL as link relation. =
You probably don't even have to invent it yourself as other people did =
already and you profit in terms of interoperability and code reusability =
if you just reuse it. The FOAF Vocabulary e.g., defines a "depiction" =
URL which you could use. See:
http://xmlns.com/foaf/spec/#term_depiction


> and yes i can not say that an article is a collection, not because we
> can not say it generally but because what you say is =
overgeneralisation
> of things. we can discuss everything as a collection and item but what
> you say makes me think that "collection", "item", "describes" and
> "describedby" link relations suddenly solved whole world problems.

:-) You are putting words in my mouth. I tried to show that that =
"property" has extremely weak semantics - IMHO too weak.


[...]
> > Could be any of those. If the article describe the photo you could
> > use "describes". If the article is more a collection of information
> > (e.g. pictures as in a gallery) you could say it is a "collection" =
and
> > the photo is an "item".
>
> could you please point me to the example how article describes photo?
> it would be really helpful for me!

http://en.wikipedia.org/wiki/Vitruvian_Man *describes* =
http://upload.wikimedia.org/wikipedia/commons/2/22/Da_Vinci_Vitruve_Luc_V=
iatour.jpg


> I believe i know and clearly
> understand when i can say that an article is a collection, but does it
> make whole world a collection? again, is not it overgeneralisation and
> oversimplification of things?

No, of course not. But every link is a property of a resource and thus, =
again IMO, "property" has too weak semantics for a standardized link =
relation.


> > Btw. On mailing lists it is typically considered as a best practice
> > to write text-only mails. This makes it much easier to quote etc. =
Could
> > you please update your client settings to send text-only mails =
instead
> > of HTML formatted mails. Thanks a lot!
>
> done, thanks for letting me know.

Thanks a lot! This definitely makes replying much easier



--
Markus Lanthaler
@markuslanthaler

