Advertisement
Advertisement

More Related Content

Advertisement
Advertisement

Aligning Web Services with the Semantic Web to Create a Global Read-Write Graph of Data

  1. Aligning Web Services with the Semantic Web to Create a Global Read-Write Graph of Data Markus Lanthaler Graz University of Technology
  2. Web services are increasingly popular
  3. Twitter Facebook Google 15 billion 5 billion 5 billion per day per day per day
  4. Semantic Web is still in its infancy
  5. Semaphobia!?
  6. Lightweight semantic annotations start to gain acceptance
  7. Increasing interest in the relationship of RESTful services and Linked Data
  8. Increasing interest in the relationship of RESTful services and Linked Data
  9. © Nesster Most previous efforts assume RPC-style. REST is different.
  10. simplicity son
  11. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] }
  12. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] } "type": "object", "model": "[foaf:Person]", "properties": { "id": { "type": "number", "model": "[ex:id]" }, "first_name": { "type": "string", "model": "[foaf:firstName]" }, "last_name": { "type": "string", "model": "[foaf:surname]" }, ...
  13. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] } "type": "object", "model": "[foaf:Person]", "properties": { "id": { "type": "number", "model": "[ex:id]" }, "first_name": { "type": "string", "model": "[foaf:firstName]" }, "last_name": { "type": "string", "model": "[foaf:surname]" }, ...
  14. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] } "type": "object", "model": "[foaf:Person]", "properties": { "id": { "type": "number", "model": "[ex:id]" }, "first_name": { "type": "string", "model": "[foaf:firstName]" }, "last_name": { "type": "string", "model": "[foaf:surname]" }, ...
  15. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] } "/user/{id}": { "mediaType": "application/json", "seredasjDescription": "#", "variables": { "id": { "binding": "#properties/knows/id" } }, "requestDescription": "#" } }
  16. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] } "links": { "/user/search{?query}": { "mediaType": "application/json", "seredasjDescription": "personlist.json", "semantics": { "[iana:relation]": "[iana:search]" }, "variables": { "query": { "model": "[foaf:name]" } } },
  17. { "id": 556410, "first_name": "Markus", "last_name": "Lanthaler", "gender": "male", "knows": [ { "id": 586807, "name": "Christian Gütl" }, { "id": 790980, "name": "John Doe" } ] }
  18. Two Algorithms
  19. 1 select ← createSelect(query) 2 bindings ← tripleStore.execute(select) 3 4 for each binding in bindings do 5 deleteData ← createDeleteData(query, binding) 6 operations.add(deleteData) 7 insertData ← insertDeleteData(query, binding) 8 operations.add(insertData) 9 end for 10 11 operations.sort() 12 translateDataOperations(operations)
  20. 1 do 2 requests ← retrievePotentialRequests(triples) 3 progress ← false 4 while requests.hasNext() = true do 5 request ← requests.next() 6 request.setData(triples) 7 request.setData(tripleStore) 8 if isValid(request) = true then 9 if request.submit() = success then 10 resp ← request.parseResponse() 11 triples.update(resp.getTriples()) 12 tripleStore.update(resp.getTriples()) 13 requests.remove(request) 14 progress ← true 15 end if 16 end if 17 end while 18 while progress = true 19 if triples.empty() = true then 20 success() 21 else 22 error(triples) 23 end if
  21. Publication Management Service
  22. /author/{id} /publication/{id} foaf:Person foaf:Document id ex:persId id ex:pubId name foaf:givenName X title dc:title X lastname foaf:familyName X authors[] dc:creator X address v:adr id ex:persId X city v:locality name foaf:name country v:country-name
  23. 1 INSERT DATA { 2 _:public1 a foaf:Document ; 3 dc:title "My first paper" ; 4 dc:creator _:author1 ; 5 dc:creator auth:cg789 . 6 _:author1 a foaf:Person ; 7 foaf:givenName "Markus" ; 8 foaf:familyName "Lanthaler" ; 9 v:adr _:addr1 . 10 _:addr1 v:country-name "Italy" . 11 } POST /publication/ POST /author/ { "title": "My first paper", "authors": [ { "id": "cg789" } ] } 201 Created Location: /publication/p489/
  24. 1 INSERT DATA { 2 _:public1 a foaf:Document ; 3 pub:p489 dc:title "My first paper" ; 4 dc:creator _:author1 ; 5 dc:creator auth:cg789 . 6 _:author1 a foaf:Person ; 7 auth:ml98 foaf:givenName "Markus" ; 8 foaf:familyName "Lanthaler" ; 9 v:adr _:addr1 . 10 _:addr1 v:country-name "Italy" . 11 } POST /publication/ POST /author/ { "title": "My first paper", { "name": "Markus", "authors": [ "lastname": "Lanthaler", { "id": "cg789" } "address": { ] "country": "Italy" } } } 201 Created 201 Created Location: /publication/p489/ Location: /author/ml98
  25. 1 INSERT DATA { 2 _:public1 a foaf:Document ; 3 pub:p489 dc:title "My first paper" ; 4 dc:creator auth:ml98 ; 5 dc:creator auth:cg789 . 6 _:author1 a foaf:Person ; 7 auth:ml98 foaf:givenName "Markus" ; 8 foaf:familyName "Lanthaler" ; 9 v:adr _:addr1 . 10 _:addr1 v:country-name "Italy" . 11 } PUT /publication/p489 { "title": "My first paper", "authors": [ { "id": "cg789" }, { "id“: "ml98" } ] } 200 OK
  26. do it on-the-fly
  27. Thank You © 2011, Markus Lanthaler. Some Rights Reserved. http://creativecommons.org/licenses/by-nc-sa/3.0/
  28. Questions? Markus Lanthaler @MarkusLanthaler Markus.Lanthaler@student.TUGraz.at http://www.slideshare.net/lanthaler
  29. Image Credits (1) http://galleries.www.frut.lv/en/5432/959 (3) Adapted from “Two Billion is Cool,” M. Thomson. Available: http://corp.klout.com/blog/2011/07/two-billion-is-cool/ (5) http://en.wikipedia.org/wiki/The_Scream (9) http://www.flickr.com/photos/nesster/3168425434/
Advertisement