Post on 11-May-2015
description
Semantic TYPO3
Develop Extensions with Semantic Web in MindJochen Rau @ T3CON11SFJune 11, 2011
(c) by Benjamin Nowack, Attribution 3.0 Unported (CC BY 3.0)
Concepts
(c) by Benjamin Nowack, Attribution 3.0 Unported (CC BY 3.0)
Implementations
(c) by Benjamin Nowack, Attribution 3.0 Unported (CC BY 3.0)
http://commons.wikimedia.org/wiki/File:Z%C3%BCrich_-_Seefeld_-_Heureka_IMG_1757.JPG
No Rocket Science
Jochen's is a Person.Jochen's age is 40.Jochen's name is Jochen Rau.Jochen likes TYPO3 and Wine.Jochen lives in Massachusetts.
Let's make some assertions about me
Jochen's is a Person.Jochen's age is 40.Jochen's name is Jochen Rau.Jochen likes TYPO3 and Wine.Jochen lives in Massachusetts.
Let's make some assertions about me
Subject Predicate Object
Jochen's is a Person.Jochen's age is 40.Jochen's name is Jochen Rau.Jochen likes TYPO3 and Wine.Jochen lives in Massachusetts.
Let's make some assertions about me
Subject Predicate ObjectTriple
Jochen's is a Person.Jochen's age is 40.Jochen's name is Jochen Rau.Jochen likes TYPO3 and Wine.Jochen lives in Massachusetts.
Let's make some assertions about me
Jochen 40
name Jochen Rau
age
TYPO3
WineMassachusetts
likeslikes
lives inPerson
is a
Jochen's is a Person.Jochen's age is 40.Jochen's name is Jochen Rau.Jochen likes TYPO3 and Wine.Jochen lives in Massachusetts.
Let's make some assertions about me
Jochen 40
name Jochen Rau
age
TYPO3
WineMassachusetts
likeslikes
lives in
TYPO3
PHP
TYPO3 is a free and open source content management system as well as a Model–view–controller (MVC) Web Application Development framework written in PHP.
description
platform
GNU General Public License
license
Person
is a
Jochen's is a Person.Jochen's age is 40.Jochen's name is Jochen Rau.Jochen likes TYPO3 and Wine.Jochen lives in Massachusetts.
Let's make some assertions about me
Jochen 40
name Jochen Rau
age
TYPO3
WineMassachusetts
likeslikes
lives in
TYPO3
PHP
TYPO3 is a free and open source content management system as well as a Model–view–controller (MVC) Web Application Development framework written in PHP.
description
platform
GNU General Public License
license
Person
is a
Unique Names for Resources
Jochen
Sebastian
likes
knows
Paris
Unique Names for Resources
<http://typoplanet.de/resource/Jochen>
<http://sebastian.kurfuerst.eu/>
<http://xmlns.com/foaf/0.1/knows>
<http://xmlns.com/foaf/0.1/likes>
<http://en.wikipedia.org/wiki/Paris_(2008_film)>
<http://sebastian.kurfuerst.eu/>
<http://typoplanet.de/resource/Jochen>
<http://typoplanet.de/resource/hg132k4jhjh1234t><urn:uuid:67ecc3bd-07e2-44f4-a788-597bf9949f0c>
<tel:+1-617-555-7332><mailto:jochen.rau@typoplanet.de>
Unique Names for Resources
<http://typoplanet.de/resource/Jochen>
<http://sebastian.kurfuerst.eu/>
<http://xmlns.com/foaf/0.1/knows>
<http://xmlns.com/foaf/0.1/likes>
<http://en.wikipedia.org/wiki/Paris_(2008_film)>
<http://sebastian.kurfuerst.eu/>
<http://example.com/JR> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<http://example.com/JR> <http://xmlns.com/foaf/0.1/age> "40" .
<http://example.com/JR> <http://xmlns.com/foaf/0.1/name> "Jochen Rau" .
<http://example.com/JR> <http://xmlns.com/foaf/0.1/interest> <http://dbpedia.org/resource/TYPO3> .
<http://example.com/JR> <http://xmlns.com/foaf/0.1/interest> <http://dbpedia.org/resource/Wine> .
<http://example.com/JR> <http://example.com/livesIn> <http://data.nytimes.com/Massachusetts> .
Turtle Serialization of an RDF Graph
@prefix ex: <http://example.org/> .@prefix dbp: <http://dbpedia.org/resource/> .@prefix nyt: <http://data.nytimes.com/> .@prefix foaf: <http://xmlns.com/foaf/0.1/> .
ex:JR a foaf:Person .ex:JR foaf:age "40" .ex:JR foaf:name "Jochen Rau" .ex:JR foaf:interest dbp:TYPO3 .ex:JR foaf:interest dbp:Wine .ex:JR ex:livesIn nyt:Massachusetts .
Turtle Serialization of an RDF Graph
@prefix ex: <http://example.org/> .@prefix dbp: <http://dbpedia.org/resource/> .@prefix nyt: <http://data.nytimes.com/> .@prefix foaf: <http://xmlns.com/foaf/0.1/> .
ex:JR a foaf:Person ; ex:age "40" ; ex:name "Jochen Rau" ; ex:likes dbp:TYPO3 ; ex:likes dbp:Wine ; ex:livesIn nyt:Massachusetts .
Turtle Syntactic sugar
@prefix ex: <http://example.org/> .@prefix dbp: <http://dbpedia.org/resource/> .@prefix nyt: <http://data.nytimes.com/> .@prefix foaf: <http://xmlns.com/foaf/0.1/> .
ex:JR a foaf:Person ; ex:age "40" ; ex:name "Jochen Rau" ; ex:likes dbp:TYPO3 , dbp:Wine ; ex:livesIn nyt:Massachusetts .
Turtle And even more syntactic sugar
RDF at a Glance
Simple, ubiquitous way of modeling dataMain concepts
Triples of subject, predicate, and objectUnique names for resourcesObjects can also be literal values (with data type or language)
Performant data stores (e.g. Virtuoso, AllegroGraph, BigOWLIM)Existing frameworks with rich APIs (e.g. JENA, Sesame, Erfurt)Billions of triples as Open Data available (e.g. Wikipedia, MusicBrainz)Many di!erent serialization formats (e.g. RDF/XML, Turtle, N3)Makes data migration much easier
Description Logic and Rules OWL and RIF
What? Why?Knowledge is spread all over the system:Domain model, database scheme, TS con"gurartion, FlexForm, TCA, documentation, Templates ...In di!erent Formats:SQL, TypoScript, XML, PHP, HTML ...Using inconsistent terminology:"Template" in TYPO3?
So, what to do?data and metadata in the same data structure (RDF)use well de"ned languages to describe (meta)data (OWL RIF)
Knublauch, Holger. KBeans Specification: Semantic Transparency for Components and Domain Models. Technical Report FAW-TR-01001, FAW Ulm, 2001.
Description Logic and Rules OWL and RIF
RDF in HTML
Three di!erent standards to markup your HTML codeMicroformatsMicrodata (part of HTML5 spec)RDFa ("RDF for attributes", W3C Recommendation)
A subset of RDFMakes web pages machine readable by your favorite search engine
<div>
<p> Alice Birpemswick </p> <p> Email: <a href="mailto:alice@example.com">alice@example.com</a> </p> <p> Phone: <a href="tel:+1-617-555-7332">+1 617.555.7332</a> </p></div>
RDF in HTML RDFa
<div prefix="foaf: http://xmlns.com/foaf/0.1/" about="http://example.com/resource/alice" typeof="Person"> <p property="foaf:name"> Alice Birpemswick </p> <p> Email: <a rel="foaf:mbox" href="mailto:alice@example.com">alice@example.com</a> </p> <p> Phone: <a rel="foaf:phone" href="tel:+1-617-555-7332">+1 617.555.7332</a> </p></div>
RDF in HTML RDFa
<div prefix="foaf: http://xmlns.com/foaf/0.1/" about="http://example.com/resource/alice" typeof="Person"> <p property="foaf:name"> Alice Birpemswick </p> <p> Email: <a rel="foaf:mbox" href="mailto:alice@example.com">alice@example.com</a> </p> <p> Phone: <a rel="foaf:phone" href="tel:+1-617-555-7332">+1 617.555.7332</a> </p></div>
RDF in HTML RDFa
http://example.com/resource/alice
<div prefix="foaf: http://xmlns.com/foaf/0.1/" about="http://example.com/alice#me" rel="knows"> <ul> <li typeof="Person"> <a rel="foaf:homepage" href="http://example.com/bob" property="foaf:name">Bob</a> </li> <li typeof="Person" > <a rel="foaf:homepage" href="http://example.com/eve" property="foaf:name">Eve</a> </li> <li typeof="Person" > <a rel="foaf:homepage" href="http://example.com/manu" property="foaf:name">Manu</a> </li> </ul></div>
RDF in HTML RDFa
<div prefix="foaf: http://xmlns.com/foaf/0.1/" about="http://example.com/alice#me" rel="knows"> <ul> <li typeof="Person"> <a rel="foaf:homepage" href="http://example.com/bob" property="foaf:name">Bob</a> </li> <li typeof="Person" > <a rel="foaf:homepage" href="http://example.com/eve" property="foaf:name">Eve</a> </li> <li typeof="Person" > <a rel="foaf:homepage" href="http://example.com/manu" property="foaf:name">Manu</a> </li> </ul></div>
RDF in HTML RDFa
RDF in HTML GoodRelations Vocabulary
# Set the doctype and add common namespacesconfig.doctype = xhtml+rdfa_10config.namespaces { xml = http://www.w3.org/XML/1998/namespace xmlns = http://www.w3.org/2000/xmlns/ xsd = http://www.w3.org/2001/XMLSchema# xhv = http://www.w3.org/1999/xhtml/vocab# rdfa = http://www.w3.org/ns/rdfa# rdf = http://www.w3.org/1999/02/22-rdf-syntax-ns# rdfs = http://www.w3.org/2000/01/rdf-schema# owl = http://www.w3.org/2002/07/owl# rif = http://www.w3.org/2007/rif#
[...]
dbo = http://dbpedia.org/ontology/ foaf = http://xmlns.com/foaf/0.1/ geo = http://www.w3.org/2003/01/geo/wgs84_pos# gr = http://purl.org/goodrelations/v1# cal = http://www.w3.org/2002/12/cal/ical# og = http://ogp.me/ns# v = http://rdf.data-vocabulary.org/# bibo = http://purl.org/ontology/bibo/}
RDF in HTML Enable RDFa in TYPO3
Demo
EXT:semantic SPARQL Client
Linked Data Cloud
Linked Data Cloud
Querying a Graph SPARQL
W3C RecommendationGraph pattern matchingSimilar to SQL and Turtle
Querying a Graph Filter, Functions, Ordering ...
Querying a Graph Custom Functions
Querying a Graph Property Paths
Querying a Graph Property Paths and Inference
Querying a Graph Subqueries
EXT:semantic SPARQL Query Administration
Default namespaces(RDFa default pro"le)Syntax highlightingCode indentation
Content Manager
EXT:semantic SPARQL Query Administration
Default namespaces(RDFa default pro"le)Syntax highlightingCode indentationFrontend and backend
Content Manager
EXT:semantic Custom Content Elements
Default layouts and custom HTML template codeSupport for pagination (dynamic query re-writing)
EXT:semantic Custom Content Elements
Frontend Backend
EXT:semantic Custom Content Elements
Query results variables are bound to the template variablesand are used as labels in a human readable form
Demo
class Tx_BlogExample_Domain_Repository_PostRepository extends Tx_Extbase_Persistence_Repository {
public function findByTagAndBlog($tag, Tx_BlogExample_Domain_Model_Blog $blog, $limit = 20) { $query = $this->createQuery(); return $query->matching( $query->logicalAnd( $query->equals('blog', $blog), $query->equals('tags.name', $tag) ) ) ->setOrderings(array('date' => Tx_Extbase_Persistence_QueryInterface::ORDER_DESCENDING)) ->setLimit((integer)$limit) ->execute(); }
public function findNext(Tx_BlogExample_Domain_Model_Post $post) { $query = $this->createQuery(); $posts = $query->matching($query->greaterThan('date', $post->getDate())) ->setOrderings(array('date' => Tx_Extbase_Persistence_QueryInterface::ORDER_DESCENDING)) ->execute(); return $posts->getFirst(); }
}
Query Object Model
Developer
Semantic TYPO3 Current Projects
SPARQL Client (EXT:semantic, Jochen Rau)RDF/RDFa support (Sebastian Kurfürst, masters thesis)CMS ontology (Andreas Wolf, GSoC)Taxonomy and Categories (EXT:taxonomy, Fabien Udriot)Semantic persistence backend (EXT:semantic, Thomas Maroschik)Globally unique identi"ers in v4 (EXT:identity, Thomas Maroschik)Tagging support for Editors (v4: RTE plugin, v5: Aloha)
Semantic TYPO3 Roadmap
Improve usability of SPARQL ClientTransform Domain Models into RDF(a)Transform OWL Ontologies into PHP Code and MetadataExtbase Query Object Model -> SPARQL Query
Semantic TYPO3 Vision
Semantic TYPO3 Vision
Semantic TYPO3 Vision
Demo
Thanks!
Twitter @jocrauEmail jochen.rau@typoplanet.deBlog http://blog.typoplanet.deTalk Lunch