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Edwin Shin Fedora Commons http://www.fedora-commons.org/. Fedora + Atom. Acknowledgements. University of London MediaShelf. Publishing Protocol RFC5023 HTTP-based, RESTful publishing protocol e.g. GData. Serialization vs. Protocol. Syndication Format RFC4287 XML-based document format

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edwin shin fedora commons http www fedora commons org
Edwin Shin

Fedora Commons

http://www.fedora-commons.org/

Fedora + Atom
acknowledgements
Acknowledgements
  • University of London
  • MediaShelf
serialization vs protocol
Publishing Protocol

RFC5023

HTTP-based, RESTful publishing protocol

e.g. GData

Serialization vs. Protocol
  • Syndication Format
    • RFC4287
    • XML-based document format
    • e.g. BBC headlines
why atom
Why Atom?
  • Simple, but flexible & extensible
  • Widespread adoption
    • From news & blogs to OAI-ORE
  • Tool support
    • Libraries for Java, Ruby, .NET, etc.
    • Feed readers
  • == lightweight recipe for enabling interoperability
fedora atom serialization
Fedora Atom Serialization
  • Alternative serialization to FOXML & METS
  • Atom ORE serialization
  • ZARCHIVE Context
    • A ZIP archive of a Fedora object, with an Atom manifest
  • Messaging Format
slide6

<feed>

<id>info:fedora/demo:SmileyBeerGlass</id>

<entry>

<id>info:fedora/demo:SmileyBeerGlass/FULL_SIZE</id>

<title type="text">FULL_SIZE</title>

<updated>2008-04-03T10:47:21.162Z</updated>

<link href="info:fedora/demo:SmileyBeerGlass/FULL_SIZE/2008-04-03T10:47:21.162Z" rel="alternate"/>

<category term="E" scheme="info:fedora/fedora-system:def/model#controlGroup"/>

</entry>

<entry xmlns:thr="http://purl.org/syndication/thread/1.0">

<id>info:fedora/demo:SmileyBeerGlass/FULL_SIZE/2008-04-03T10:47:21.162Z</id>

<title type="text">FullSize.jpg.0</title>

<updated>2008-04-03T10:47:21.162Z</updated>

<thr:in-reply-to ref="info:fedora/demo:SmileyBeerGlass/FULL_SIZE"/>

<summary type="text">FullSize.jpg.0</summary>

<content type="image/jpeg" src="http://.../SmileyBeerGlass-FullSize.jpg"/>

</entry>

</feed>

Atom
oreatom

<feed>

<id>info:fedora/demo:SmileyBeerGlass</id>

<link href="http://localhost:8080/fedora/get/demo:SmileyBeerGlass" rel="self" type="application/atom+xml"/>

<title type="text">Resource Map http://localhost:8080/fedora/get/demo:SmileyBeerGlass</title>

<author><name>Fedora Repository Service</name></author>

<link href="http://localhost:8080/fedora/get/demo:SmileyBeerGlass#aggregation" rel="describes"/>

<category term="http://www.openarchives.org/ore/terms/ResourceMap" scheme="http://www.openarchives.org/ore/terms/" label="ResourceMap"/>

<fedora-model:hasContentModel>info:fedora/demo:CmodelForBMech_DualResImageImpl</fedora-model:hasContentModel>

<dc:title>Smiley Beer Glass</dc:title>

<rel:isMemberOf>info:fedora/demo:SmileyStuff</rel:isMemberOf>

<entry>

<id>info:fedora/demo:SmileyBeerGlass/FULL_SIZE</id>

<updated>2008-04-03T10:39:23.473Z</updated>

<title type="text">Aggregated Resource http://localhost:8080/fedora/get/demo:SmileyBeerGlass/FULL_SIZE</title>

<link href="http://localhost:8080/fedora/get/demo:SmileyBeerGlass/FULL_SIZE" rel="alternate"/>

<fedora-model:versionable>true</fedora-model:versionable>

</entry>

<entry>

<id>info:fedora/demo:SmileyBeerGlass/MEDIUM_SIZE</id>

<updated>2008-04-03T10:39:23.473Z</updated>

<title type="text">Aggregated Resource http://localhost:8080/fedora/get/demo:SmileyBeerGlass/MEDIUM_SIZE</title>

<link href="http://localhost:8080/fedora/get/demo:SmileyBeerGlass/MEDIUM_SIZE" rel="alternate"/>

</entry>

</feed>

OREAtom
zip archive context

<feed>

<entry>

<id>info:fedora/demo:SmileyBeerGlass/TEST/2008-04-03T11:19:40.440Z</id>

<title type="text">TEST.0</title>

<updated>2008-04-03T11:19:40.440Z</updated>

<thr:in-reply-to ref="info:fedora/demo:SmileyBeerGlass/TEST"/>

<category term="Managed Image" scheme="info:fedora/fedora-system:def/model#label"/>

<summary type="text">TEST.0</summary>

<content type="image/jpeg" src="TEST.0.jpg"/>

</entry>

</feed>

Zip Archive Context
api m messaging format

<entry>

<id>urn:uuid:8bcefc04-8391-4bf9-b0e7-d4822b829deb</id>

<updated>2008-04-02T17:32:51.122Z</updated>

<author>

<name>fedoraAdmin</name>

<uri>http://localhost:8080/fedora</uri>

</author>

<title type="text">purgeObject</title>

<category

scheme="http://www.fedora.info/definitions/1/0/types/pid"

term="demo:foo"

label="xsd:string"/>

<summary>demo:foo</summary>

<content type="text">2008-04-01T01:02:03.001Z</content>

</entry>

API-M Messaging Format
deserialization
Deserialization
  • Atom as an ingest format
    • Fedora objects
    • ORE Resource Maps
    • Any Atom feed
  • Remote invocation
slide11
Currently available in Subversion:

https://fedora-commons.svn.sourceforge.net/svnroot/fedora-commons/fedora/branches/dev-146791

future exploration
Future exploration
  • Modeling atomistic objects
  • Atom Publishing Protocol
    • Implement over the REST-API
    • SWORD
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