Linked Data Platform (LDP) Working Group Teleconference

Minutes of 02 November 2012

Agenda
http://www.w3.org/2012/ldp/wiki/F2F1#Day_2_-_November_2nd
Present
Eric Prud'hommeaux, Sandro Hawke, Raúl García Castro, Nandana Mihindukulasooriya, Richard Cyganiak, Steve Speicher, Bart van Leeuwen, Kevin Page, Alexandre Bertails, Arnaud Le Hors, Ashok Malhotra, Henry Story, Serena Villata, Olivier Berger, Antonis Loizou, Armin Haller, Steve Battle
Guests
Ivan Herman (W3C), Jonathan Dray, Fabien Gandon, Tim Berners-Lee
Remote
Yves Lafon, John Arwe
IRC Log
Original and Editable Wiki Version
Resolutions

None.

Topics
<sandro> Agenda: http://www.w3.org/2012/ldp/wiki/F2F1#Day_2_-_November_2nd
<sandro> Guest: Ivan Herman, W3C
<sandro> Guest: Jonathan Dray
<cygri> guest: Fabien Gandon
<cygri> guest: Tim (timbl) Berners-Lee
<sandro> Present: Eric, Sandro, Raúl, Nandana, Cygri, Steves, Bart, Kevin, Alexandre, Arnaud, Ashok, Henry, Serena, Olivier, Antonis, Armin, SteveB
<sandro> Around the table: TimBL, Eric, Ivan, Sandro, Raúl, Nandana, Cygri, Steves, Bart, Kevin, Alexandre, Arnaud, Ashok, Henry, ?, Fabien, Serena, Olivier, Jonathan, Antonis, Armin, SteveB

Sandro Hawke: Around the table: TimBL, Eric, Ivan, Sandro, Raúl, Nandana, Cygri, Steves, Bart, Kevin, Alexandre, Arnaud, Ashok, Henry, ?, Fabien, Serena, Olivier, Jonathan, Antonis, Armin, SteveB

<sandro> Remote: Yves, Arwe
07:58:18 <RRSAgent> logging to http://www.w3.org/2012/11/02-ldp-irc

RRSAgent IRC Bot: logging to http://www.w3.org/2012/11/02-ldp-irc

07:58:20 <trackbot> RRSAgent, make logs public

Trackbot IRC Bot: RRSAgent, make logs public

07:58:22 <trackbot> Zakim, this will be LDP

Trackbot IRC Bot: Zakim, this will be LDP

07:58:22 <Zakim> ok, trackbot; I see SW_LDP()2:30AM scheduled to start 88 minutes ago

Zakim IRC Bot: ok, trackbot; I see SW_LDP()2:30AM scheduled to start 88 minutes ago

07:58:23 <trackbot> Meeting: Linked Data Platform (LDP) Working Group Teleconference
07:58:23 <trackbot> Date: 02 November 2012
08:03:58 <Arnaud> zakim, who's on the phone?

(No events recorded for 5 minutes)

Arnaud Le Hors: zakim, who's on the phone?

08:03:58 <Zakim> SW_LDP()2:30AM has not yet started, Arnaud

Zakim IRC Bot: SW_LDP()2:30AM has not yet started, Arnaud

08:03:59 <Zakim> On IRC I see jonathandray, Zakim, RRSAgent, antonis, Arnaud, SteveS, BartvanLeeuwen, LeeF, trackbot, tpacbot, webr3, Yves, sandro, ericP

Zakim IRC Bot: On IRC I see jonathandray, Zakim, RRSAgent, antonis, Arnaud, SteveS, BartvanLeeuwen, LeeF, trackbot, tpacbot, webr3, Yves, sandro, ericP

08:05:39 <sandro> Zakim, call Saint_Claire_3b

Sandro Hawke: Zakim, call Saint_Claire_3b

08:05:39 <Zakim> I am sorry, sandro; I do not know a number for Saint_Claire_3b

Zakim IRC Bot: I am sorry, sandro; I do not know a number for Saint_Claire_3b

08:05:43 <sandro> Zakim, call SaintClaire_3b

Sandro Hawke: Zakim, call SaintClaire_3b

08:05:43 <Zakim> I am sorry, sandro; I do not know a number for SaintClaire_3b

Zakim IRC Bot: I am sorry, sandro; I do not know a number for SaintClaire_3b

08:05:47 <sandro> Zakim, call SaintClaire3b

Sandro Hawke: Zakim, call SaintClaire3b

08:05:47 <Zakim> I am sorry, sandro; I do not know a number for SaintClaire3b

Zakim IRC Bot: I am sorry, sandro; I do not know a number for SaintClaire3b

08:05:53 <sandro> Zakim, call SaintClaire3B

Sandro Hawke: Zakim, call SaintClaire3B

08:05:53 <Zakim> I am sorry, sandro; I do not know a number for SaintClaire3B

Zakim IRC Bot: I am sorry, sandro; I do not know a number for SaintClaire3B

08:05:57 <sandro> Zakim, call Saint_Claire3B

Sandro Hawke: Zakim, call Saint_Claire3B

08:05:57 <Zakim> I am sorry, sandro; I do not know a number for Saint_Claire3B

Zakim IRC Bot: I am sorry, sandro; I do not know a number for Saint_Claire3B

08:06:31 <sandro> zakim, call St_Clair_3B

Sandro Hawke: zakim, call St_Clair_3B

08:06:31 <Zakim> ok, sandro; the call is being made

Zakim IRC Bot: ok, sandro; the call is being made

08:06:32 <Zakim> SW_LDP()2:30AM has now started

Zakim IRC Bot: SW_LDP()2:30AM has now started

08:06:33 <Zakim> +St_Clair_3B

Zakim IRC Bot: +St_Clair_3B

08:07:06 <Zakim> -St_Clair_3B

Zakim IRC Bot: -St_Clair_3B

08:07:07 <Zakim> SW_LDP()2:30AM has ended

Zakim IRC Bot: SW_LDP()2:30AM has ended

08:07:07 <Zakim> Attendees were St_Clair_3B

Zakim IRC Bot: Attendees were St_Clair_3B

08:07:31 <sandro> zakim, call St_Clair_3B

Sandro Hawke: zakim, call St_Clair_3B

08:07:31 <Zakim> ok, sandro; the call is being made

Zakim IRC Bot: ok, sandro; the call is being made

08:07:32 <Zakim> SW_LDP()2:30AM has now started

Zakim IRC Bot: SW_LDP()2:30AM has now started

08:07:32 <Zakim> +St_Clair_3B

Zakim IRC Bot: +St_Clair_3B

08:11:46 <oberger> Arnaud: added the primer to the agenda for this afternoon

Arnaud Le Hors: added the primer to the agenda for this afternoon [ Scribe Assist by Olivier Berger ]

08:12:46 <krp> Arnaud: yesterday first f2f, ramping up, but feedback to try and speed up discussions

Arnaud Le Hors: yesterday first f2f, ramping up, but feedback to try and speed up discussions [ Scribe Assist by Kevin Page ]

08:13:26 <krp> ... status quo is the spec as is

Kevin Page: ... status quo is the spec as is

08:13:48 <krp> ... burden is on those who have issue with spec to explain what that is

Kevin Page: ... burden is on those who have issue with spec to explain what that is

08:14:29 <krp> ... discussion centred around: 1. what the problems is (ensuring everyone understands it) 2. how to solve it (proposals)

Kevin Page: ... discussion centred around: 1. what the problems is (ensuring everyone understands it) 2. how to solve it (proposals)

08:15:48 <krp> ... make sure we are talking about a specific problem and specific problem rather than debating in the round

Kevin Page: ... make sure we are talking about a specific problem and specific problem rather than debating in the round

08:15:49 <oberger> btw, http://bikeshed.org/ for those who don't know

Olivier Berger: btw, http://bikeshed.org/ for those who don't know

08:16:34 <krp> ... all exercise some self discipline... don't repeat what others have already say... remove yourself from queue if this happens... then we'll straw poll

Kevin Page: ... all exercise some self discipline... don't repeat what others have already say... remove yourself from queue if this happens... then we'll straw poll

08:16:45 <Arnaud> q?

Arnaud Le Hors: q?

08:17:13 <krp> oberger: we can only discuss issues where the person who raised it is present?

Olivier Berger: we can only discuss issues where the person who raised it is present? [ Scribe Assist by Kevin Page ]

08:18:02 <krp> arnaud: if no one present can defend the position we should just skip it. but e.g. yesterday others managed to represent the view

Arnaud Le Hors: if no one present can defend the position we should just skip it. but e.g. yesterday others managed to represent the view [ Scribe Assist by Kevin Page ]

08:18:12 <krp> TOPIC: Access control

1. Access control

08:18:20 <oberger> http://www.w3.org/2012/ldp/charter

Olivier Berger: http://www.w3.org/2012/ldp/charter

08:18:42 <sandro> " The Working Group will not produce a Recommendation specifying solutions for access control and authentication for Linked Data. However the Working Group may identify, based on a set of real world use cases, requirements for authentication and authorization technologies for use with Linked Data. " -- the charter

Sandro Hawke: " The Working Group will not produce a Recommendation specifying solutions for access control and authentication for Linked Data. However the Working Group may identify, based on a set of real world use cases, requirements for authentication and authorization technologies for use with Linked Data. " -- the charter

08:19:32 <krp> arnaud: when discussing charter two positions: shouldn't do access control as it's a bigger problem; or that how could we not consider the topic

Arnaud Le Hors: when discussing charter two positions: shouldn't do access control as it's a bigger problem; or that how could we not consider the topic [ Scribe Assist by Kevin Page ]

08:19:33 <bblfish> he said it depends...

Henry Story:

08:19:42 <betehess> s/he said it depends...//
08:20:07 <krp> ... compromise in the charter: a note. Need to figure out what will be in it, who will be editors

Kevin Page: ... compromise in the charter: a note. Need to figure out what will be in it, who will be editors

08:20:14 <bblfish> q+

Henry Story: q+

08:20:18 <krp> ... we need to define what we want to do

Kevin Page: ... we need to define what we want to do

08:20:22 <betehess> q+

Alexandre Bertails: q+

08:20:26 <Arnaud> ack bblfish

Arnaud Le Hors: ack bblfish

08:20:54 <krp> bblfish: identify those interested in distributed access control. I wish to implement this... who else?

Henry Story: identify those interested in distributed access control. I wish to implement this... who else? [ Scribe Assist by Kevin Page ]

08:21:12 <Arnaud> ack bete

Arnaud Le Hors: ack bete

08:21:28 <FabGandon> Present+FabGandon

Fabien Gandon: Present+FabGandon

08:21:56 <SteveBattle> q+

Steve Battle: q+

08:21:59 <sandro> q+ to talk about W3C member-access as a user story

Sandro Hawke: q+ to talk about W3C member-access as a user story

08:22:23 <Arnaud> ack steveb

Arnaud Le Hors: ack steveb

08:22:23 <krp> betehess: first access control, then distributed access control. Need to split the issues. Identity, authorisation. Don't want to do anything on auth?

Alexandre Bertails: first access control, then distributed access control. Need to split the issues. Identity, authorisation. Don't want to do anything on auth? [ Scribe Assist by Kevin Page ]

08:22:36 <sandro> betehess, I think this is 100% about authorization

Sandro Hawke: betehess, I think this is 100% about authorization

08:22:44 <krp> stevebattle: is there anything in the spec incompatible with ACLs etc.?

Steve Battle: is there anything in the spec incompatible with ACLs etc.? [ Scribe Assist by Kevin Page ]

08:22:44 <Ashok_Malhotra> q+

Ashok Malhotra: q+

08:22:49 <bblfish> here is an interesting thing: http://www.w3.org/wiki/WebAccessControl

Henry Story: here is an interesting thing: http://www.w3.org/wiki/WebAccessControl

08:22:58 <nmihindu> present+ Nandana_Mihindukulasooriya

Nandana Mihindukulasooriya: present+ Nandana_Mihindukulasooriya

08:23:10 <Arnaud> ack sandro

Arnaud Le Hors: ack sandro

08:23:10 <Zakim> sandro, you wanted to talk about W3C member-access as a user story

Zakim IRC Bot: sandro, you wanted to talk about W3C member-access as a user story

08:23:12 <bblfish> that is what betehess means by WebACL

Henry Story: that is what betehess means by WebACL

08:23:19 <BartvanLeeuwen> present+ BartvanLeeuwen

Bart van Leeuwen: present+ BartvanLeeuwen

08:23:23 <krp> betehess: so far nothing in spec. For WebACL just need to provide ontologies.

Alexandre Bertails: so far nothing in spec. For WebACL just need to provide ontologies. [ Scribe Assist by Kevin Page ]

08:23:41 <antonis> present+ AntonisLoizou

Antonis Loizou: present+ AntonisLoizou

08:23:54 <rgarcia> present+ Raul_Garcia-Castro

Raúl García Castro: present+ Raul_Garcia-Castro

08:24:10 <bblfish> +1 there is a requirement for a distributed authentication

Henry Story: +1 there is a requirement for a distributed authentication

08:24:14 <krp> sandro: W3C member access control... get to say employees of members to access parts of W3C site... this could be use case for LDP, delegating the access to member orgs

Sandro Hawke: W3C member access control... get to say employees of members to access parts of W3C site... this could be use case for LDP, delegating the access to member orgs [ Scribe Assist by Kevin Page ]

08:24:14 <oberger> sandro, would you add it to the UCR ?

Olivier Berger: sandro, would you add it to the UCR ?

08:24:16 <svillata> present+ Serena Villata

Serena Villata: present+ Serena Villata

08:24:18 <Arnaud> ack ashok

Arnaud Le Hors: ack ashok

08:24:18 <jonathandray> present+ Jonathan_Dray

Jonathan Dray: present+ Jonathan_Dray

08:24:22 <betehess> sandro, that use-case is definitely what people call "decentralized" here

Alexandre Bertails: sandro, that use-case is definitely what people call "decentralized" here

08:24:29 <oberger> present+Olivier_Berger

Olivier Berger: present+Olivier_Berger

08:24:37 <SteveS> present+ Steve_Speicher

Steve Speicher: present+ Steve_Speicher

08:24:39 <bblfish> q+

Henry Story: q+

08:24:40 <oberger> present+ Olivier_Berger

Olivier Berger: present+ Olivier_Berger

08:24:45 <cygri> present+ Richard Cyganiak

Richard Cyganiak: present+ Richard Cyganiak

08:25:09 <betehess> q+

Alexandre Bertails: q+

08:25:11 <sandro> present+ Sandro Hawke

Sandro Hawke: present+ Sandro Hawke

08:25:17 <SteveS> sandro, good use case should it be added to issue tracker or in minutes enough?

Steve Speicher: sandro, good use case should it be added to issue tracker or in minutes enough?

08:25:18 <Arnaud> ack bblfish

Arnaud Le Hors: ack bblfish

08:25:22 <betehess> present+ Alexandre_Bertails

Alexandre Bertails: present+ Alexandre_Bertails

08:25:39 <krp> ashok: typically access control is based on underlying storage engine. I can help edit.

Ashok Malhotra: typically access control is based on underlying storage engine. I can help edit. [ Scribe Assist by Kevin Page ]

08:25:54 <svillata> q?

Serena Villata: q?

08:26:27 <sandro> q+ to ask about possible requirement -- do resources have different representations for different-access users?

Sandro Hawke: q+ to ask about possible requirement -- do resources have different representations for different-access users?

08:26:27 <oberger> q+

Olivier Berger: q+

08:26:30 <krp> bblfish: at the RESTful layer need to expose the metadata... the ACLs for a file... the identity needs to be global for an LDP system that is global and interoperable, automatically distributing

Henry Story: at the RESTful layer need to expose the metadata... the ACLs for a file... the identity needs to be global for an LDP system that is global and interoperable, automatically distributing [ Scribe Assist by Kevin Page ]

08:26:36 <Arnaud> ack bete

Arnaud Le Hors: ack bete

08:26:42 <betehess> http://presbrey.mit.edu/

Alexandre Bertails: http://presbrey.mit.edu/

08:27:12 <bblfish> presbrey built http://data.fm/

Henry Story: presbrey built http://data.fm/

08:27:22 <krp> betehess: let's be concrete (see link)... first implementation of linked data server... let's start by reviewing this

Alexandre Bertails: let's be concrete (see link)... first implementation of linked data server... let's start by reviewing this [ Scribe Assist by Kevin Page ]

08:27:45 <cygri> q+

Richard Cyganiak: q+

08:27:48 <Zakim> +Yves

Zakim IRC Bot: +Yves

08:28:17 <Arnaud> ack sandro

Arnaud Le Hors: ack sandro

08:28:17 <Zakim> sandro, you wanted to ask about possible requirement -- do resources have different representations for different-access users?

Zakim IRC Bot: sandro, you wanted to ask about possible requirement -- do resources have different representations for different-access users?

08:28:33 <krp> arnaud: to clarify, we're not going to develop a spec that solves this problem. but want to know what people think. create a wiki page for this to develop the ucr for this.

Arnaud Le Hors: to clarify, we're not going to develop a spec that solves this problem. but want to know what people think. create a wiki page for this to develop the ucr for this. [ Scribe Assist by Kevin Page ]

08:29:30 <Arnaud> ack oberger

Arnaud Le Hors: ack oberger

08:29:31 <krp> sandro: do you want to get different triples dependent on who you are identified as? Is there consensus to this approach? Can we clarify when this is reasonable to do?

Sandro Hawke: do you want to get different triples dependent on who you are identified as? Is there consensus to this approach? Can we clarify when this is reasonable to do? [ Scribe Assist by Kevin Page ]

08:29:44 <betehess> q+

Alexandre Bertails: q+

08:29:48 <krp> oberger: are people interested in oauth? is there anything to say about it?

Olivier Berger: are people interested in oauth? is there anything to say about it? [ Scribe Assist by Kevin Page ]

08:29:58 <betehess> q+ to comment on other technologies

Alexandre Bertails: q+ to comment on other technologies

08:30:05 <Arnaud> ack cygri

Arnaud Le Hors: ack cygri

08:30:07 <krp> ... it can delegate tokens to applications to do things on you behalf

Kevin Page: ... it can delegate tokens to applications to do things on you behalf

08:30:48 <oberger> oberger: interesting use case : delegating "tokens" to apps to act on your behalf, in oauth

Olivier Berger: interesting use case : delegating "tokens" to apps to act on your behalf, in oauth [ Scribe Assist by Olivier Berger ]

08:31:06 <krp> cygri: as someone who would like a ready-made solution that I'd like to take of the shelf... most useful in the note for me would be use case and requirements

Richard Cyganiak: as someone who would like a ready-made solution that I'd like to take of the shelf... most useful in the note for me would be use case and requirements [ Scribe Assist by Kevin Page ]

08:31:25 <bblfish> q+

Henry Story: q+

08:31:49 <oberger> sandro, I think the point you raised is interesting to the group indeed

Olivier Berger: sandro, I think the point you raised is interesting to the group indeed

08:31:54 <krp> ... vs. we can't recommend particular tech anyway, so a laundry list of different technologies doesn't seem to be what we're chartered to do

Kevin Page: ... vs. we can't recommend particular tech anyway, so a laundry list of different technologies doesn't seem to be what we're chartered to do

08:31:55 <bblfish> Cygri, is right. 0ne does not need to list all the technologies up. There are parts that remain open.

Henry Story: Cygri, is right. 0ne does not need to list all the technologies up. There are parts that remain open.

08:32:11 <oberger> sandro, worth an issue ?

Olivier Berger: sandro, worth an issue ?

08:32:25 <Arnaud> ack bete

Arnaud Le Hors: ack bete

08:32:25 <Zakim> betehess, you wanted to comment on other technologies

Zakim IRC Bot: betehess, you wanted to comment on other technologies

08:32:34 <krp> arnaud: per the charter, it ought to be ucr. however, if there are those in the group who are interested, don't want to stop that... as long as it doesn't get in the way of the ucr

Arnaud Le Hors: per the charter, it ought to be ucr. however, if there are those in the group who are interested, don't want to stop that... as long as it doesn't get in the way of the ucr [ Scribe Assist by Kevin Page ]

08:33:43 <ericP> q?

Eric Prud'hommeaux: q?

08:34:02 <krp> betehess: if you tell people the note will just be about listing stuff it will be a waste of time... so maybe better not to make a note? what happens if someone comes with a specific proposal, do we turn away?

Alexandre Bertails: if you tell people the note will just be about listing stuff it will be a waste of time... so maybe better not to make a note? what happens if someone comes with a specific proposal, do we turn away? [ Scribe Assist by Kevin Page ]

08:34:15 <krp> arnaud: not here to revisit charter

Arnaud Le Hors: not here to revisit charter [ Scribe Assist by Kevin Page ]

08:34:37 <krp> ... the question is not whether we should do it (the note)

Kevin Page: ... the question is not whether we should do it (the note)

08:34:47 <BartvanLeeuwen> q+

Bart van Leeuwen: q+

08:35:25 <betehess> does "Deliverables - Not Recommendation Track" even mean that we need to deliver a NOTE? whyh not just a wiki page?

Alexandre Bertails: does "Deliverables - Not Recommendation Track" even mean that we need to deliver a NOTE? whyh not just a wiki page?

08:35:32 <Arnaud> ack bblfish

Arnaud Le Hors: ack bblfish

08:35:38 <oberger> betehess, it's too soon to discuss that IMHO

Olivier Berger: betehess, it's too soon to discuss that IMHO

08:35:55 <oberger> let's see UC and needs of the group more explicited

Olivier Berger: let's see UC and needs of the group more explicited

08:35:57 <krp> ... but implementers need to know how to solve this... see this as a starting point to define the problem... leading to solutions and maybe, eventually, a later process for a recommendation

Kevin Page: ... but implementers need to know how to solve this... see this as a starting point to define the problem... leading to solutions and maybe, eventually, a later process for a recommendation

08:36:04 <cygri> betehess, oberger, the charter clearly says "Working Group Note on Use Cases and Requirements for access control and authentication mechanisms needed for this work."

Richard Cyganiak: betehess, oberger, the charter clearly says "Working Group Note on Use Cases and Requirements for access control and authentication mechanisms needed for this work."

08:36:20 <oberger> cygri, ack

Olivier Berger: cygri, ack

08:36:32 <cygri> betehess, oberger, whether that's a good thing or not, i don't know :-)

Richard Cyganiak: betehess, oberger, whether that's a good thing or not, i don't know :-)

08:36:47 <oberger> cygri, we'll see while doing

Olivier Berger: cygri, we'll see while doing

08:37:00 <betehess> cygri, yeah, just saw that (I wasn't the one who added that in the charter :-)

Alexandre Bertails: cygri, yeah, just saw that (I wasn't the one who added that in the charter :-)

08:37:01 <Arnaud> ack bart

Arnaud Le Hors: ack bart

08:37:06 <krp> bblfish: in order to test interop we'll need to have something there. but don't need to fully dive into the "identity pit hole of hell" to do this. but we need to have something there to get acceptance from gov etc.

Henry Story: in order to test interop we'll need to have something there. but don't need to fully dive into the "identity pit hole of hell" to do this. but we need to have something there to get acceptance from gov etc. [ Scribe Assist by Kevin Page ]

08:37:50 <SteveS> q+

Steve Speicher: q+

08:38:18 <krp> bart: discussing things that potentially could go wrong with spec. why don't we have implementers trying this to find the problems? does this make it easier to spot the issues rather than discussing all possible issues

Bart van Leeuwen: discussing things that potentially could go wrong with spec. why don't we have implementers trying this to find the problems? does this make it easier to spot the issues rather than discussing all possible issues [ Scribe Assist by Kevin Page ]

08:38:18 <Arnaud> ack steves

Arnaud Le Hors: ack steves

08:38:42 <betehess> q+

Alexandre Bertails: q+

08:39:05 <krp> steves: not sure what we need to standardise to grant access to individuals, we can do that today in several different ways, do we need to standardise?

Steve Speicher: not sure what we need to standardise to grant access to individuals, we can do that today in several different ways, do we need to standardise? [ Scribe Assist by Kevin Page ]

08:39:07 <cygri> SteveS++

Richard Cyganiak: SteveS++

08:39:17 <Arnaud> ack bete

Arnaud Le Hors: ack bete

08:39:20 <timbl_> RRSAgent, pointer?

Tim Berners-Lee: RRSAgent, pointer?

08:39:20 <RRSAgent> See http://www.w3.org/2012/11/02-ldp-irc#T08-39-20

RRSAgent IRC Bot: See http://www.w3.org/2012/11/02-ldp-irc#T08-39-20

08:39:21 <krp> ... seems like we should get the wiki page up to start getting input

Kevin Page: ... seems like we should get the wiki page up to start getting input

08:40:26 <krp> betehess: for many people the success of ldp will be including some standardisation for problems like access control so that it comes with ldp

Alexandre Bertails: for many people the success of ldp will be including some standardisation for problems like access control so that it comes with ldp [ Scribe Assist by Kevin Page ]

08:40:54 <krp> steves: not saying isn't useful to standardise

Steve Speicher: not saying isn't useful to standardise [ Scribe Assist by Kevin Page ]

08:41:13 <Arnaud> q?

Arnaud Le Hors: q?

08:41:15 <timbl_> q+ to suggest that the art of launching th system is about both having a clean consistent vision and also connecting it to th existing things people are now using.

Tim Berners-Lee: q+ to suggest that the art of launching th system is about both having a clean consistent vision and also connecting it to th existing things people are now using.

08:41:21 <krp> arnaud: whole point of note is to gather this information: what to you need from access control?

Arnaud Le Hors: whole point of note is to gather this information: what to you need from access control? [ Scribe Assist by Kevin Page ]

08:41:28 <Arnaud> ack timbl

Arnaud Le Hors: ack timbl

08:41:28 <Zakim> timbl_, you wanted to suggest that the art of launching th system is about both having a clean consistent vision and also connecting it to th existing things people are now using.

Zakim IRC Bot: timbl_, you wanted to suggest that the art of launching th system is about both having a clean consistent vision and also connecting it to th existing things people are now using.

08:42:42 <bblfish> Arnaud: note is a way to gather information together about what people would like to do

Arnaud Le Hors: note is a way to gather information together about what people would like to do [ Scribe Assist by Henry Story ]

08:42:46 <krp> timbl: to get system off the ground needs clear consistent system, but also bringing in those who are tied into existing systems so they will accept  future solution. in ideal world finding a clear conversion from existing sys to rdf would be nice.

Tim Berners-Lee: to get system off the ground needs clear consistent system, but also bringing in those who are tied into existing systems so they will accept future solution. in ideal world finding a clear conversion from existing sys to rdf would be nice. [ Scribe Assist by Kevin Page ]

08:43:40 <SteveS> Think access control is important to success of LDP in long term, just not sure a minimal requirement….impls will impose access restrictions regardless of what we say

Steve Speicher: Think access control is important to success of LDP in long term, just not sure a minimal requirement….impls will impose access restrictions regardless of what we say

08:43:51 <cygri> ACTION: Ashok_Malhotra to set up wiki page on Access Control

ACTION: Ashok_Malhotra to set up wiki page on Access Control

08:43:51 <trackbot> Sorry, couldn't find Ashok_Malhotra. You can review and register nicknames at <http://www.w3.org/2012/ldp/track/users>.

Trackbot IRC Bot: Sorry, couldn't find Ashok_Malhotra. You can review and register nicknames at <http://www.w3.org/2012/ldp/track/users>.

08:43:56 <krp> arnaud: ashok to create and structure wiki page to gather use cases and requirements

Arnaud Le Hors: ashok to create and structure wiki page to gather use cases and requirements [ Scribe Assist by Kevin Page ]

08:44:04 <cygri> ACTION: Ashok to set up wiki page on Access Control

ACTION: Ashok to set up wiki page on Access Control

08:44:04 <trackbot> Created ACTION-21 - Set up wiki page on Access Control [on Ashok Malhotra - due 2012-11-09].

Trackbot IRC Bot: Created ACTION-21 - Set up wiki page on Access Control [on Ashok Malhotra - due 2012-11-09].

08:44:23 <bblfish> +1

Henry Story: +1

08:44:25 <Arnaud> q?

Arnaud Le Hors: q?

08:44:26 <krp> ... everyone add your ucr, please check whether there's already something there... modify/add rather than duplicate

Kevin Page: ... everyone add your ucr, please check whether there's already something there... modify/add rather than duplicate

08:44:27 <cygri> +1

Richard Cyganiak: +1

08:44:30 <SteveS> +1

Steve Speicher: +1

08:44:43 <ericP> Ashok_Malhotra, i already started by dropping an example into http://www.w3.org/2012/ldp/wiki/AccessControl

Eric Prud'hommeaux: Ashok_Malhotra, i already started by dropping an example into http://www.w3.org/2012/ldp/wiki/AccessControl

08:44:46 <krp> ... a reasonable approach?

Kevin Page: ... a reasonable approach?

08:45:05 <ericP> i can continue with a couple others

Eric Prud'hommeaux: i can continue with a couple others

08:45:19 <krp> ... I think that's all we need to do on this today

Kevin Page: ... I think that's all we need to do on this today

08:45:55 <timbl_> http://www.w3.org/wiki/WebAccessControl

Tim Berners-Lee: http://www.w3.org/wiki/WebAccessControl

08:46:17 <krp> ericP: already have a starting page in place http://www.w3.org/wiki/WebAccessControl

Eric Prud'hommeaux: already have a starting page in place http://www.w3.org/wiki/WebAccessControl [ Scribe Assist by Kevin Page ]

08:46:38 <oberger> ericP, could you explicit the syntax of the example ?

Olivier Berger: ericP, could you explicit the syntax of the example ?

08:47:17 <krp> ashok: what does this syntax mean?

Ashok Malhotra: what does this syntax mean? [ Scribe Assist by Kevin Page ]

08:47:32 <krp> arnaud: eric, could you give more explanation of this example?

Arnaud Le Hors: eric, could you give more explanation of this example? [ Scribe Assist by Kevin Page ]

08:49:00 <krp> arnaud: call for which issues to discuss and defend

Arnaud Le Hors: call for which issues to discuss and defend [ Scribe Assist by Kevin Page ]

08:49:14 <cygri> q+

Richard Cyganiak: q+

08:49:18 <krp> TOPIC: Issue 25

2. ISSUE-25

08:49:31 <bblfish> Issue-25?

Henry Story: ISSUE-25?

08:49:31 <trackbot> ISSUE-25 -- Weak aggregation and strong composition in containers -- open

Trackbot IRC Bot: ISSUE-25 -- Weak aggregation and strong composition in containers -- open

08:49:31 <trackbot> http://www.w3.org/2012/ldp/track/issues/25

Trackbot IRC Bot: http://www.w3.org/2012/ldp/track/issues/25

08:49:31 <cygri> ISSUE-25?

Richard Cyganiak: ISSUE-25?

08:49:31 <trackbot> ISSUE-25 -- Weak aggregation and strong composition in containers -- open

Trackbot IRC Bot: ISSUE-25 -- Weak aggregation and strong composition in containers -- open

08:49:32 <trackbot> http://www.w3.org/2012/ldp/track/issues/25

Trackbot IRC Bot: http://www.w3.org/2012/ldp/track/issues/25

08:49:43 <cygri> q-

Richard Cyganiak: q-

08:51:12 <krp> stevebattle: ldp spec introduces issue of containers. when you think about these you'd normally consider the strength of these. aggregation is weak with a focus on membership, composition is stronger and considers the lifecycle e.g. deleting resource when container is deleted

Steve Battle: ldp spec introduces issue of containers. when you think about these you'd normally consider the strength of these. aggregation is weak with a focus on membership, composition is stronger and considers the lifecycle e.g. deleting resource when container is deleted [ Scribe Assist by Kevin Page ]

08:52:12 <krp> oberger: addition of something to container would be a good subject to consider this

Olivier Berger: addition of something to container would be a good subject to consider this [ Scribe Assist by Kevin Page ]

08:52:25 <krp> arnaud: Steve, do you have a proposal as how to modify spec?

Arnaud Le Hors: Steve, do you have a proposal as how to modify spec? [ Scribe Assist by Kevin Page ]

08:53:01 <Ashok_Malhotra> q+

Ashok Malhotra: q+

08:53:05 <SteveS> q+

Steve Speicher: q+

08:53:07 <krp> stevebattle: proposal is to use hierarchical URIs to represent containment

Steve Battle: proposal is to use hierarchical URIs to represent containment [ Scribe Assist by Kevin Page ]

08:53:24 <oberger> q+

Olivier Berger: q+

08:54:26 <krp> arnaud: aggregation vs. composition, but the spec isn't clear? do you want it to do one or the other?

Arnaud Le Hors: aggregation vs. composition, but the spec isn't clear? do you want it to do one or the other? [ Scribe Assist by Kevin Page ]

08:54:49 <krp> stevebattle: to do both but be clear when it is doing which

Steve Battle: to do both but be clear when it is doing which [ Scribe Assist by Kevin Page ]

08:55:46 <krp> q+

Kevin Page: q+

08:55:57 <Arnaud> ack ashok

Arnaud Le Hors: ack ashok

08:55:58 <bblfish> q+

Henry Story: q+

08:56:13 <Arnaud> ack steves

Arnaud Le Hors: ack steves

08:56:27 <krp> ashok: when you add a container to a container is it hierarchical?

Ashok Malhotra: when you add a container to a container is it hierarchical? [ Scribe Assist by Kevin Page ]

08:56:31 <krp> stevebattle: yes

Steve Battle: yes [ Scribe Assist by Kevin Page ]

08:57:44 <krp> steves: not sure how the uri structure is related to containment, not sure the spec should specify uri structure.

Steve Speicher: not sure how the uri structure is related to containment, not sure the spec should specify uri structure. [ Scribe Assist by Kevin Page ]

08:57:48 <Arnaud> ack oberger

Arnaud Le Hors: ack oberger

08:58:00 <cygri> SteveBattle, please phrase a proposal on IRC

Richard Cyganiak: SteveBattle, please phrase a proposal on IRC

08:58:00 <bblfish> but the solution seems simple to me: why not just have a class of containers that seperates the two cases ?

Henry Story: but the solution seems simple to me: why not just have a class of containers that seperates the two cases ?

08:58:37 <bblfish> -1 for adding new verbs, only a last resort

Henry Story: -1 for adding new verbs, only a last resort

08:58:45 <krp> oberger: not entirely clear what a container is in terms of semantics. we need to define what actions we can perform on containers, then map to GET/PUT/POST/DELETE

Olivier Berger: not entirely clear what a container is in terms of semantics. we need to define what actions we can perform on containers, then map to GET/PUT/POST/DELETE [ Scribe Assist by Kevin Page ]

08:58:50 <sandro> so POST might be CREATE + ADD-TO-CONTAINER ?

Sandro Hawke: so POST might be CREATE + ADD-TO-CONTAINER ?

08:59:23 <SteveBattle> a single container might support both aggregation and composition so I'm not sure we can do it by container type.

Steve Battle: a single container might support both aggregation and composition so I'm not sure we can do it by container type.

08:59:34 <ericP> q+ to resolve issue-25 adding a Container property called "deletesMembers" which applies regardless of the URI structure

Eric Prud'hommeaux: q+ to resolve ISSUE-25 adding a Container property called "deletesMembers" which applies regardless of the URI structure

08:59:34 <sandro> q+

Sandro Hawke: q+

09:00:11 <Arnaud> ack krp

Arnaud Le Hors: ack krp

09:00:14 <sandro> krp: I'm a little confused about the proposal.   You want the client to understand whether it's containment?

Kevin Page: I'm a little confused about the proposal. You want the client to understand whether it's containment? [ Scribe Assist by Sandro Hawke ]

09:01:29 <sandro> q-

Sandro Hawke: q-

09:01:57 <cygri> PROPOSAL: DELETE on a container deletes the container and any resources with URIs below in a path hierarchy, and nothing else.

PROPOSED: DELETE on a container deletes the container and any resources with URIs below in a path hierarchy, and nothing else.

09:02:05 <timbl_> q?

Tim Berners-Lee: q?

09:02:17 <sandro> Arnaud: I'm hearing people want to know what the server is going to do when a container is deleted, as far as deleting the contained resources.

Arnaud Le Hors: I'm hearing people want to know what the server is going to do when a container is deleted, as far as deleting the contained resources. [ Scribe Assist by Sandro Hawke ]

09:02:21 <antonis> q+

Antonis Loizou: q+

09:02:27 <Arnaud> ack bblfish

Arnaud Le Hors: ack bblfish

09:02:28 <timbl_> Thius syetm must have rigidly defined and simple semantics. Think unix file syetm.

Tim Berners-Lee: Thius syetm must have rigidly defined and simple semantics. Think unix file syetm.

09:02:35 <SteveBattle> q+

Steve Battle: q+

09:02:39 <oberger> q+

Olivier Berger: q+

09:02:52 <timbl_> q+

Tim Berners-Lee: q+

09:02:52 <krp> bblfish: proposal to have two type of containers specified

Henry Story: proposal to have two type of containers specified [ Scribe Assist by Kevin Page ]

09:02:52 <antonis> q-

Antonis Loizou: q-

09:03:19 <sandro> bblfish: I propose to rdf:types of containers.   One type deletes its contained resources when it's deleted; the other type does not.

Henry Story: I propose two rdf:types of containers. One type deletes its contained resources when it's deleted; the other type does not. [ Scribe Assist by Sandro Hawke ]

09:03:27 <sandro> +1 I rather like that.

Sandro Hawke: +1 I rather like that.

09:03:35 <SteveBattle> I like cygri's wording - very concise.

Steve Battle: I like cygri's wording - very concise.

09:03:37 <nmihindu> q+

Nandana Mihindukulasooriya: q+

09:03:39 <sandro> s/to r/two r/
09:03:46 <krp> ... so when client does a GET it knows whether it's an aggregation or container and what the behaviour is when DELETE

Kevin Page: ... so when client does a GET it knows whether it's an aggregation or container and what the behaviour is when DELETE

09:04:00 <cygri> SteveBattle, note, not intended to be spec text, just a design to be turned into spec text by the editor

Richard Cyganiak: SteveBattle, note, not intended to be spec text, just a design to be turned into spec text by the editor

09:04:36 <rgarcia> q+ to say why don't we define two membership properties, one for weak and another for strong aggregation

Raúl García Castro: q+ to say why don't we define two membership properties, one for weak and another for strong aggregation

09:05:05 <krp> oberger: do the different types map to the two examples in the spec

Olivier Berger: do the different types map to the two examples in the spec [ Scribe Assist by Kevin Page ]

09:05:07 <SteveS> Like what cygri, though instead requiring uri hierarchy structure why not say something like "and any resources managed by the same server as the container"

Steve Speicher: Like what cygri, though instead requiring uri hierarchy structure why not say something like "and any resources managed by the same server as the container"

09:05:20 <ericP> rgarcia, i've typed a proposal like that at 9:59:34

Eric Prud'hommeaux: rgarcia, i've typed a proposal like that at 9:59:34

09:05:25 <oberger> q-

Olivier Berger: q-

09:05:27 <Arnaud> ack eric

Arnaud Le Hors: ack eric

09:05:27 <Zakim> ericP, you wanted to resolve issue-25 adding a Container property called "deletesMembers" which applies regardless of the URI structure

Zakim IRC Bot: ericP, you wanted to resolve ISSUE-25 adding a Container property called "deletesMembers" which applies regardless of the URI structure

09:06:18 <bblfish> agree that I don't think that speaking of URL hierachies is useful

Henry Story: agree I don't think that speaking of URL hierachies is useful

09:06:50 <BartvanLeeuwen> q+

Bart van Leeuwen: q+

09:06:56 <krp> if URL hierarchies are useful, it is only for implementation on the server (where to me it doesn't seem useful, but hey)

Kevin Page: if URL hierarchies are useful, it is only for implementation on the server (where to me it doesn't seem useful, but hey)

09:06:56 <bblfish> s/that I/I/
09:07:07 <Arnaud> ack steveb

Arnaud Le Hors: ack steveb

09:07:11 <krp> it is not a sufficient mechanism to inform the client

Kevin Page: it is not a sufficient mechanism to inform the client

09:07:33 <Ashok_Malhotra> q+

Ashok Malhotra: q+

09:08:07 <cygri> q+

Richard Cyganiak: q+

09:08:09 <Arnaud> ack timbl

Arnaud Le Hors: ack timbl

09:08:12 <krp> stevebattle: don't believe the typing proposal works... can't add same resources to multiple containers but can to aggregations

Steve Battle: don't believe the typing proposal works... can't add same resources to multiple containers but can to aggregations [ Scribe Assist by Kevin Page ]

09:08:35 <ericP> what if we just give up on DELETE delting any members? any use cases which motivate this complexity?

Eric Prud'hommeaux: what if we just give up on DELETE delting any members? any use cases which motivate this complexity?

09:09:45 <Ashok_Malhotra> q-

Ashok Malhotra: q-

09:10:11 <krp> timbl: don't agree that we can make it a general case, sets and lists are different. containment seems like a clear implementation to a filesystem structure and how a service is likely to be implemented

Tim Berners-Lee: don't agree that we can make it a general case, sets and lists are different. containment seems like a clear implementation to a filesystem structure and how a service is likely to be implemented [ Scribe Assist by Kevin Page ]

09:10:40 <krp> ... so group should focus on containers. other forms of aggregation are described by a number of different ontologies.

Kevin Page: ... so group should focus on containers. other forms of aggregation are described by a number of different ontologies.

09:11:04 <cygri> PROPOSAL: DELETE on a container deletes the container and any resources with URIs below in a path hierarchy, and nothing else.

PROPOSED: DELETE on a container deletes the container and any resources with URIs below in a path hierarchy, and nothing else.

09:11:42 <timbl_>  Clarification: Does the URI path match the containership at all times?

Tim Berners-Lee: Clarification: Does the URI path match the containership at all times?

09:12:04 <Arnaud> ack nmihindu

Arnaud Le Hors: ack nmihindu

09:12:09 <SteveS> q+

Steve Speicher: q+

09:12:10 <krp>  clarification: can there be any members *not* under the path hierarchy?

Kevin Page: clarification: can there be any members *not* under the path hierarchy?

09:12:31 <SteveBattle> Ah, cygri, your definition says nothing about the URIs created in POST.

Steve Battle: Ah, cygri, your definition says nothing about the URIs created in POST.

09:12:54 <BartvanLeeuwen> q-

Bart van Leeuwen: q-

09:12:54 <Arnaud> ack rgarcia

Arnaud Le Hors: ack rgarcia

09:12:55 <cygri> SteveBattle, do you want to rephrase it?

Richard Cyganiak: SteveBattle, do you want to rephrase it?

09:12:56 <Zakim> rgarcia, you wanted to say why don't we define two membership properties, one for weak and another for strong aggregation

Zakim IRC Bot: rgarcia, you wanted to say why don't we define two membership properties, one for weak and another for strong aggregation

09:13:37 <Arnaud> ack cygri

Arnaud Le Hors: ack cygri

09:14:09 <krp> rgarcia: define two membership properties

Raúl García Castro: define two membership properties [ Scribe Assist by Kevin Page ]

09:14:10 <timbl_> PROPOSAL: The group drop discussion of the aggregation model as that does not require mutual understanding between client and server, only between client and client.

PROPOSED: The group drop discussion of the aggregation model as that does not require mutual understanding between client and server, only between client and client.

09:14:39 <SteveBattle> "DELETE on a container deletes the container and any resources with URIs below in a path hierarchy, and nothing else. POST on a container creates a new resource URI hierarchically below the container."

Steve Battle: "DELETE on a container deletes the container and any resources with URIs below in a path hierarchy, and nothing else. POST on a container creates a new resource URI hierarchically below the container."

09:14:47 <bblfish> we forgot timbls proposal: the container of the spec is/(should be?) the agregation type of container with the propoerty that if you delete it you delete all sub-resources, managed by that server. Weak agregation could be done using other ontologies by just publishing information in an rdf resource

Henry Story: we forgot timbls proposal: the container of the spec is/(should be?) the agregation type of container with the propoerty that if you delete it you delete all sub-resources, managed by that server. Weak agregation could be done using other ontologies by just publishing information in an rdf resource

09:14:53 <krp> cygri: spec allows domain specific subclassing and this will quickly get complicated with two properties

Richard Cyganiak: spec allows domain specific subclassing and this will quickly get complicated with two properties [ Scribe Assist by Kevin Page ]

09:15:21 <antonis>  ldp:compositionPredicate rdfs:subClassOf ldp:memberhiPredicate . ldp:aggregationPredicate rdfs:subClassOf ldp:memberhiPredicate .

Antonis Loizou: ldp:compositionPredicate rdfs:subPropertyOf ldp:memberhiPredicate . ldp:aggregationPredicate rdfs:subPropertyOf ldp:memberhiPredicate .

09:15:28 <krp> .. do need to support both cases (strong and weak aggregation). container as designed seems to be about strong

Kevin Page: .. do need to support both cases (strong and weak aggregation). container as designed seems to be about strong

09:15:28 <antonis> ?

Antonis Loizou: ?

09:15:33 <rgarcia> q+ to say that if we don't have both membership properties then we are forcing that domain-specific membership properties are always weak aggregation ones

Raúl García Castro: q+ to say that if we don't have both membership properties then we are forcing that domain-specific membership properties are always weak aggregation ones

09:16:03 <SteveBattle> Ughh- that's going to get ugly PRETTY quickly (ld composition predicates)

Steve Battle: Ughh- that's going to get ugly PRETTY quickly (ld composition predicates)

09:16:04 <bblfish> +1 for how to do weak agregation sounds good.

Henry Story: +1 for how to do weak agregation sounds good.

09:16:22 <krp> ... but we need to be clear how to do weak aggregation

Kevin Page: ... but we need to be clear how to do weak aggregation

09:16:32 <betehess> can somebody gives a use-case for weak-aggregation?

Alexandre Bertails: can somebody gives a use-case for weak-aggregation?

09:16:38 <timbl_> q+ to suggest that the group separate out into separate sections of the document the client-server protocol (includes containers, ACL) and the client-client protocol (data types, preferred vocabulary, aggregation membership).

Tim Berners-Lee: q+ to suggest that the group separate out into separate sections of the document the client-server protocol (includes containers, ACL) and the client-client protocol (data types, preferred vocabulary, aggregation membership).

09:17:02 <antonis> s/rdfs:subClassOf/rdfs:subPropertyOf/
09:17:11 <ericP> lastlog propos

Eric Prud'hommeaux: lastlog propos

09:17:15 <timbl_> q?

Tim Berners-Lee: q?

09:17:21 <krp> oberger: we need to decide which way container is, and whether we need the other

Olivier Berger: we need to decide which way container is, and whether we need the other [ Scribe Assist by Kevin Page ]

09:17:34 <Arnaud> ack steves

Arnaud Le Hors: ack steves

09:17:36 <SteveBattle> q+

Steve Battle: q+

09:18:35 <cygri> oberger++

Richard Cyganiak: oberger++

09:18:36 <krp> steves: say that instead of a hierarchy of uris say a resource  hierarchy managed by that server

Steve Speicher: say that instead of a hierarchy of uris say a resource hierarchy managed by that server [ Scribe Assist by Kevin Page ]

09:19:51 <Arnaud> ack timbl

Arnaud Le Hors: ack timbl

09:19:51 <Zakim> timbl_, you wanted to suggest that the group separate out into separate sections of the document the client-server protocol (includes containers, ACL) and the client-client

Zakim IRC Bot: timbl_, you wanted to suggest that the group separate out into separate sections of the document the client-server protocol (includes containers, ACL) and the client-client

09:19:54 <Zakim> ... protocol (data types, preferred vocabulary, aggregation membership).

Zakim IRC Bot: ... protocol (data types, preferred vocabulary, aggregation membership).

09:21:16 <krp> timbl: separate client-client protocol from client-server. allow clients to build new kinds of structure and the server doesn't need to be away. server needs to be aware of things like managing the stored resources and backing to (file)storage

Tim Berners-Lee: separate client-client protocol from client-server. allow clients to build new kinds of structure and the server doesn't need to be away. server needs to be aware of things like managing the stored resources and backing to (file)storage [ Scribe Assist by Kevin Page ]

09:21:29 <krp> ... go through spec and consider "does the server need to be aware of this"

Kevin Page: ... go through spec and consider "does the server need to be aware of this"

09:22:05 <Arnaud> ack rgarcia

Arnaud Le Hors: ack rgarcia

09:22:05 <Zakim> rgarcia, you wanted to say that if we don't have both membership properties then we are forcing that domain-specific membership properties are always weak aggregation ones

Zakim IRC Bot: rgarcia, you wanted to say that if we don't have both membership properties then we are forcing that domain-specific membership properties are always weak aggregation ones

09:22:38 <cygri> PROPOSAL: We need containers for both composition and aggregation. Container-created resources is composition. �It's good practice but not required that URI hierarchy match composition.

PROPOSED: We need containers for both composition and aggregation. Container-created resources is composition. �It's good practice but not required that URI hierarchy match composition.

09:23:23 <FabGandon> ack SteveBattle

Fabien Gandon: ack SteveBattle

09:23:42 <cygri> q+

Richard Cyganiak: q+

09:24:01 <krp> stevebattle: Tim is correct, the LDP is primarily about containment. but we do need aggregation.

Steve Battle: Tim is correct, the LDP is primarily about containment. but we do need aggregation. [ Scribe Assist by Kevin Page ]

09:24:26 <SteveS> +1 to cygri 10:22 proposal

Steve Speicher: +1 to cygri 10:22 proposal

09:24:32 <timbl_> q+ to point out hierarchical URIs connect with WebDav and also give locality of reference with relative URIs.

Tim Berners-Lee: q+ to point out hierarchical URIs connect with WebDav and also give locality of reference with relative URIs.

09:24:35 <oberger> q+ to know why rdfs:Container isn't reused

Olivier Berger: q+ to know why rdfs:Container isn't reused

09:24:35 <krp> ... other precedents for hierarchical URIs

Kevin Page: ... other precedents for hierarchical URIs

09:25:00 <Arnaud> ack cygri

Arnaud Le Hors: ack cygri

09:25:01 <SteveBattle> I'd still prefer the use of hierarchical URIs.

Steve Battle: I'd still prefer the use of hierarchical URIs.

09:25:23 <SteveS> oberger, could also look at skos:Collection as the type to indicate aggregation

Steve Speicher: oberger, could also look at skos:Collection as the type to indicate aggregation

09:25:34 <Arnaud> ack timbl

Arnaud Le Hors: ack timbl

09:25:34 <Zakim> timbl_, you wanted to point out hierarchical URIs connect with WebDav and also give locality of reference with relative URIs.

Zakim IRC Bot: timbl_, you wanted to point out hierarchical URIs connect with WebDav and also give locality of reference with relative URIs.

09:25:37 <sandro> I have a hard time imagining it's okay to delete /foo and still have /foo/bar exist.

Sandro Hawke: I have a hard time imagining it's okay to delete /foo and still have /foo/bar exist.

09:25:53 <SteveBattle> TOTALLY agree

Steve Battle: TOTALLY agree

09:26:21 <ahaller2> sandro++

Armin Haller: sandro++

09:26:54 <Yves> +1 to sandro

Yves Lafon: +1 to sandro

09:27:19 <betehess> agree with tim, we're conflating different problems and solutions here

Alexandre Bertails: agree with tim, we're conflating different problems and solutions here

09:27:26 <ericP> q?

Eric Prud'hommeaux: q?

09:27:30 <sandro> +1 timbl: paging large agregates is something you need with any kind of large RDF Graph

Sandro Hawke: +1 timbl: paging large agregates is something you need with any kind of large RDF Graph

09:28:08 <krp> cygri: consider a container with a common relationship to lots of resources, which the container has not control over, but facilities such as paging are still useful

Richard Cyganiak: consider a container with a common relationship to lots of resources, which the container has not control over, but facilities such as paging are still useful [ Scribe Assist by Kevin Page ]

09:28:10 <SteveBattle> paging is currently tied to the aggregation - I think that's right.

Steve Battle: paging is currently tied to the aggregation - I think that's right.

09:28:13 <Yves> a POST on a container /foo MAY create  multiple resources under /foo, DELETE on a container /foo MUST delete all its underlying resources

Yves Lafon: a POST on a container /foo MAY create multiple resources under /foo, DELETE on a container /foo MUST delete all its underlying resources

09:28:26 <krp> timbl: that sounds like an RDF graph. can we not have paging on all RDF graphs?

Tim Berners-Lee: that sounds like an RDF graph. can we not have paging on all RDF graphs? [ Scribe Assist by Kevin Page ]

09:28:43 <bblfish> +1 to follow up on looking at separating paging more clearly

Henry Story: +1 to follow up on looking at separating paging more clearly

09:28:50 <betehess> Yves: that's an analysis or a proposal?

Yves Lafon: that's an analysis or a proposal? [ Scribe Assist by Alexandre Bertails ]

09:28:51 <Arnaud> ack oberger

Arnaud Le Hors: ack oberger

09:28:51 <Zakim> oberger, you wanted to know why rdfs:Container isn't reused

Zakim IRC Bot: oberger, you wanted to know why rdfs:Container isn't reused

09:28:55 <cygri> cygri: we call it "container" even though it's really a controller for a subject-predicate pair

Richard Cyganiak: we call it "container" even though it's really a controller for a subject-predicate pair [ Scribe Assist by Richard Cyganiak ]

09:29:11 <Yves> betehess, an analysis of what people seems to want

Yves Lafon: betehess, an analysis of what people seems to want

09:29:14 <krp> oberger: proposed to use rdfs:member, but I also see rdfs: container

Olivier Berger: proposed to use rdfs:member, but I also see rdfs: container [ Scribe Assist by Kevin Page ]

09:29:23 <timbl_> PROPOSAL: the paging functionality be applied to any subject for any property, and that be separated in the spec from containment, and it apply to containment as a example with no further design.

PROPOSED: the paging functionality be applied to any subject for any property, and that be separated in the spec from containment, and it apply to containment as a example with no further design.

09:29:33 <Yves> and it seems logical too ;)

Yves Lafon: and it seems logical too ;)

09:29:39 <krp> ... so maybe we shouldn't call it container?

Kevin Page: ... so maybe we shouldn't call it container?

09:29:41 <SteveBattle> But we can also use skos:Collection - don't overload refs:Container

Steve Battle: But we can also use skos:Collection - don't overload refs:Container

09:29:52 <cygri> +1 to timbl's proposal

Richard Cyganiak: +1 to timbl's proposal

09:30:15 <krp> arnaud: good time to have a break?

Arnaud Le Hors: good time to have a break? [ Scribe Assist by Kevin Page ]

09:30:19 <betehess> +1 to timbl

Alexandre Bertails: +1 to timbl

09:30:29 <sandro> +1 timbl's

Sandro Hawke: +1 timbl's

09:30:38 <rgarcia> +1 to timbl's

Raúl García Castro: +1 to timbl's

09:30:56 <ericP>  Proposals:

Eric Prud'hommeaux: Proposals:

09:30:56 <ericP> .. hierarchical URIs represent containment (and delelete members) (stevebattle)

Eric Prud'hommeaux: .. hierarchical URIs represent containment (and delelete members) (stevebattle)

09:30:56 <ericP> .. class type specifies whether members are contained (bblfish)

Eric Prud'hommeaux: .. class type specifies whether members are contained (bblfish)

09:30:56 <ericP> .. { <SomeContainer> ldp:deletesMembers true } deletes members regardless of URI (ericP)

Eric Prud'hommeaux: .. { <SomeContainer> ldp:deletesMembers true } deletes members regardless of URI (ericP)

09:30:59 <ericP> .. the membership property specifies containment (rgarcia)

Eric Prud'hommeaux: .. the membership property specifies containment (rgarcia)

09:31:02 <ericP> .. all containers delete members (timbl)

Eric Prud'hommeaux: .. all containers delete members (timbl)

09:31:04 <ericP> .. all created (by POST) resources are contained

Eric Prud'hommeaux: .. all created (by POST) resources are contained

09:31:26 <timbl_> PROPOSAL:  separate client-client protocol from client-server. allow clients to build new kinds of structure and the server doesn't need to be away. server needs to be aware of things like managing the stored resources and backing to (file)storage.  the paging functionality be applied to any subject for any property, and that be separated in the spec from containment, and it apply to containment as a example with no further design.

PROPOSED: separate client-client protocol from client-server. allow clients to build new kinds of structure and the server doesn't need to be away. server needs to be aware of things like managing the stored resources and backing to (file)storage. the paging functionality be applied to any subject for any property, and that be separated in the spec from containment, and it apply to containment as a example with no further design.

09:34:48 <SteveBattle> Clarification neede: Does this separation imply that we drop ldp:membershipPredicate or not?

Steve Battle: Clarification neede: Does this separation imply that we drop ldp:membershipPredicate or not?

09:48:25 <Zakim> -Yves

(No events recorded for 13 minutes)

Zakim IRC Bot: -Yves

09:59:57 <sandro> JohnArwe, we are returning from break now.

(No events recorded for 11 minutes)

Sandro Hawke:

10:00:29 <oberger> q+ to question the role of dc:creator for ownership wrt DELETE

Olivier Berger: q+ to question the role of dc:creator for ownership wrt DELETE

10:00:37 <Zakim> +JohnArwe

Zakim IRC Bot: +JohnArwe

10:00:38 <Zakim> -JohnArwe

Zakim IRC Bot: -JohnArwe

10:00:38 <Zakim> +JohnArwe

Zakim IRC Bot: +JohnArwe

10:02:56 <oberger> q-

Olivier Berger: q-

10:03:26 <betehess> s/JohnArwe, we are returning from break now.//
10:04:02 <ahaller2> ISSUE-25

Armin Haller: ISSUE-25

10:04:19 <oberger> JohnArwe, we have wandered a bit far from the issue

Olivier Berger: JohnArwe, we have wandered a bit far from the issue

10:04:21 <nmihindu> TOPIC: ISSUE-25

3. ISSUE-25

10:04:34 <sandro> "Weak aggregation and strong composition in containers"

Sandro Hawke: "Weak aggregation and strong composition in containers"

10:05:07 <nmihindu> Arnaud: We are talking about many issues within this issues

Arnaud Le Hors: We are talking about many issues within this issues [ Scribe Assist by Nandana Mihindukulasooriya ]

10:05:26 <cygri> STRAWPOLL: Do we need weak aggregation in the spec?

STRAWPOLL: Do we need weak aggregation in the spec?

10:05:30 <sandro> Arnaud: I take for granted that we need Strong Compisition.  Any objection?  ...  none ...

Arnaud Le Hors: I take for granted that we need Strong Compisition. Any objection? ... none ... [ Scribe Assist by Sandro Hawke ]

10:05:37 <nmihindu> Arnaud: do we need to have weak aggregation ?

Arnaud Le Hors: do we need to have weak aggregation ? [ Scribe Assist by Nandana Mihindukulasooriya ]

10:05:38 <cygri> +1 Yes we need it

Richard Cyganiak: +1 Yes we need it

10:05:41 <BartvanLeeuwen> +1

Bart van Leeuwen: +1

10:05:41 <ahaller2> +1

Armin Haller: +1

10:05:41 <antonis> +1

Antonis Loizou: +1

10:05:42 <rgarcia> +1

Raúl García Castro: +1

10:05:44 <oberger> +1

Olivier Berger: +1

10:05:44 <SteveS> +1

Steve Speicher: +1

10:05:50 <betehess> +1

Alexandre Bertails: +1

10:05:52 <bblfish> +1

Henry Story: +1 but in other terms

10:05:54 <SteveBattle> would like to hear what Time had to say before I vote

Steve Battle: would like to hear what Tim had to say before I vote

10:06:00 <nmihindu> Arnaud: do we need aggregation ?

Arnaud Le Hors: do we need aggregation ? [ Scribe Assist by Nandana Mihindukulasooriya ]

10:06:01 <SteveBattle> s/Time/Tim
10:06:11 <sandro> +0  apps need it, but I don't think *we* necessarily need to spec anything

Sandro Hawke: +0 apps need it, but I don't think *we* necessarily need to spec anything

10:06:13 <bblfish> +0

Henry Story: +0

10:06:20 <Zakim> +Yves

Zakim IRC Bot: +Yves

10:06:21 <timbl_> -1

Tim Berners-Lee: -1

10:06:23 <betehess> s/+1/+1 but in other terms/
10:06:23 <nmihindu> Arnaud: aggregation is weak composition

Arnaud Le Hors: aggregation is weak composition [ Scribe Assist by Nandana Mihindukulasooriya ]

10:06:28 <oberger> I'm not sure I understand what "need" means

Olivier Berger: I'm not sure I understand what "need" means

10:06:48 <Yves> +0 we might provision for it, but not define it

Yves Lafon: +0 we might provision for it, but not define it

10:06:54 <nmihindu> Arnaud: do we need to address weak aggregation in this spec ?

Arnaud Le Hors: do we need to address weak aggregation in this spec ? [ Scribe Assist by Nandana Mihindukulasooriya ]

10:06:59 <JohnArwe> what is composition as you're using the term, since I need to understand that in order to parse your definition of aggregation as weak comp

John Arwe: what is composition as you're using the term, since I need to understand that in order to parse your definition of aggregation as weak comp

10:06:59 <bblfish> I am not sure

Henry Story: I am not sure

10:07:07 <bblfish> I need to implement it

Henry Story: I need to implement it

10:07:21 <nmihindu> oberger: do paging is included in this ?

Olivier Berger: do paging is included in this ? [ Scribe Assist by Nandana Mihindukulasooriya ]

10:08:26 <antonis> strong composition: when a container is deleted, all contained resources are also deleted

Antonis Loizou: strong composition: when a container is deleted, all contained resources are also deleted

10:08:41 <nmihindu> timbl: why does the server have to know those arcs have to do with aggregation ?

Tim Berners-Lee: why does the server have to know those arcs have to do with aggregation ? [ Scribe Assist by Nandana Mihindukulasooriya ]

10:08:53 <antonis> weak aggregation: when a container is deleted, resources under it are not

Antonis Loizou: weak aggregation: when a container is deleted, resources under it are not

10:08:54 <SteveBattle> +1

Steve Battle: +1

10:08:56 <betehess> as a developer, I have no need at all for weak aggregation as I have RDF graphs already, but I see value in paging for any kind of resource

Alexandre Bertails: as a developer, I have no need at all for weak aggregation as I have RDF graphs already, but I see value in paging for any kind of resource

10:09:07 <krp> Do we need weak aggregation for *anything other than paging*? (if not, we can split out the paging issue)

Kevin Page: Do we need weak aggregation for *anything other than paging*? (if not, we can split out the paging issue)

10:09:16 <sandro> +1 timbl: general aggregation is something clients to can, without knowledge/support from the server.   but LDP servers should provide paging of that data, if necessary.

Sandro Hawke: +1 timbl: general aggregation is something clients to can, without knowledge/support from the server. but LDP servers should provide paging of that data, if necessary.

10:09:17 <bblfish> So one should consider other methods one can use to do the same. Eg. Post an rdf:Collection to a ldp:Collection, then one can use some form of SPARQL update on the collection when making changes

Henry Story: So one should consider other methods one can use to do the same. Eg. Post an rdf:Collection to a ldp:Collection, then one can use some form of SPARQL update on the collection when making changes



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This revision (#2) generated 2012-11-02 10:24:07 UTC by 'sandro', comments: None