What is Fedora Commons and Why Should You

What is Fedora Commons, and Why Should You Care? Cole Hudson and Graham Hukill

WARNING: Both "Fedora Commons" and "Fedora" will be used interchangeably over the course of this presentation.

Where We Are Why We Chose Fedora What It's All About Why You Should Care Roadmap Which Way ? by Brave Heart. CC BYNC-ND 2. 0. http: //www. flickr. com/photos/brravehe art/104975221/sizes/l/in/photostream/

Our Current Progress

by Ksayer 1. CC BY-SA 2. 0 http: //www. flickr. com/photos/ksaye 13544/sizes/l/in/photostream/

By bibliovox. CC BY-NC -SA 2. 0. http: //www. flickr. com/ photos/68103485@N 05 /6208894824/sizes/l/in/ photostream/

What is Fedora Commons?

Fedora Commons is. . Flexible Extensible Digital Object Repository Architecture

Fedora Commons image ("picture 1", jpeg) Image Metadata ("picture 1") Ingest into Fedora Commons (splits metadata and data) Binary Image File (jpeg)

University of Chicago's Mansueto Library image URL: http: //www. flickr. com/photos/uchicagolibrary/2881572822/

OAIS model image URL: http: //en. wikipedia. org/wiki/File: OAIS-. gif

Preservation birds of a feather image URL: http: //mansueto. lib. uchicago. edu/shelving. html

some technical details. . .

• • Fedora Commons is a "system“ objects and their datastreams are the building blocks of Fedora RDF statements are used to describe relationships between objects APIs are relied on heavily for ingesting, managing, and accessing items

• • Fedora Commons is a "system“ objects and their datastreams are the building blocks of Fedora RDF statements are used to describe relationships between objects APIs are relied on heavily for ingesting, managing, and accessing items

Fedora Commons is a "system" Fedora Application Management APIs binary files *My. SQL Web Admin Graphical Interface Mulgara RDF Database Access APIs Metadata Objects Web Admin Graphical Interface Tomcat Web Server

Fedora Commons is a "system" image URL: http: //fedora-commons. org/download/2. 2/userdocs/server/features/images/reposvc. jpg

• • Fedora Commons is a "system“ objects and their datastreams are the building blocks of Fedora RDF statements are used to describe relationships between objects APIs are relied on heavily for ingesting, managing, and accessing items

INTERLUDE: objects anatomy of a Fedora object • • • basic atomistic building block of Fedora represents an intellectual or conceptual "item" aggregates files and pieces that make up "item" fun fact: a collection of images might is often an object too objects are stored as FOXML files: "Fedora Object XML"

INTERLUDE: datastreams PID: : cfai: EB 01 a 045 RDF Statements (RELS-EXT) original tiff (ORIGINAL) Dublin Core (DC) access copy (ACCESS) MODS (MODS) thumbnail (THUMB)

INTERLUDE: datastreams URL: http: //fedora-repository. example/fedora/objects/cfai: EB 01 a 045/datastreams/ACCESS/content

INTERLUDE: datastreams URL: http: //fedora-repository. example/fedora/objects/cfai: EB 01 a 045/datastreams/MODS/content

• • Fedora Commons is a "system“ objects and their datastreams are the building blocks of Fedora RDF statements are used to describe relationships between objects APIs are relied on heavily for ingesting, managing, and accessing items

RDF: Resource Description Framework "RDF is intended for situations in which this information needs to be processed by applications, rather than being only displayed to people. " -RDF primer

Diary of an RDF triple In computer speak. . . subject = <fedora: ramsey: Sketchesandscraps>predicate = <fedora-relsext: is. Member. Of. Collection>object = <fedora: collection: ramsey> In human speak. . . The ebook object, "Sketches and Scraps", is a member of the Collection "Ramsey". "Sketches and Scraps" is. Member. Of. Collection "Ramsey"

RDF query example Query: select ? object from <#ri> where ? object <fedora-rels-ext: is. Member. Of. Collection> <fedora: collection: cfai> Reponse: info: fedora/cfai: EB 02 a 046 info: fedora/cfai: EB 02 a 034 info: fedora/cfai: EB 01 a 072 info: fedora/cfai: EB 02 a 028 info: fedora/cfai: EB 01 a 066 etc. . .

image URL: http: //www. mkbergman. com/wp-content/uploads/2013/01/071115_e 8. png they get complex quickly. . .

• • Fedora Commons is a "system“ objects and their datastreams are the building blocks of Fedora RDF statements are used to describe relationships between objects APIs are relied on heavily for ingesting, managing, and accessing items

API: "Application Programming Interface" • preferred way of interacting with Fedora API-M Methods API-A Methods add. Datastream add. Relationship compare. Datastream. Checksum export get. Datastream. History get. Datastreams get. Next. PID get. Object. XML get. Relationships ingest modify. Datastream modify. Object purge. Datastream purge. Object purge. Relationship set. Datastream. State set. Datastream. Versionable Validate describe. Repository find. Objects get. Datastream. Dissemination get. Object. History get. Object. Profile list. Datastreams list. Methods resume. Find. Objects

Fedora API example: ingest command: curl -i -u fedora. Admin: fedora. Admin -X POST http: //localhost/fedora/objects/new -H "Content-Type: text/xml" --data-binary "@Campbell_ebook. Object. xml" response: HTTP/1. 1 201 Created Server: Apache-Coyote/1. 1 Set-Cookie: JSESSIONID=DB 77 E 40 CD 554 EB 1496548 EDD 9 CF 3 CC 5 A; Path=/fedora Location: http: //localhost/fedora/objects/Campbell%3 Aimages Content-Type: text/plain Transfer-Encoding: chunked Date: Sun, 03 Mar 2013 22: 49: 01 GMT

Fedora API example: retrieval Remember this datastream? That's an API call! URL: http: //fedora-repository. example/fedora/objects/cfai: EB 01 a 045/datastreams/ACCESS/content

All together now! An ebook. . . model: WSUebook has. Content. Model WSU ebook collection: Ramsey is. Member. Of. Collection images thumbs IMAGE_ # THUMB _# HTML alto. XM L HTML_# alto. XML _# fullbook PDF HTML

Aaannnd. . . Why Should You Care?

It's free as in puppies, not as in beer.

It's library centric. Image by Phil Bradley. CC BY-NC-SA 2. 0. http: //www. flickr. com/photos/philbradley/5395526390/ sizes/l/in/photostream/

It supports this stuff OAI Dublin Core API Interfaces Digital Preservation RDF

Most Importantly Though digital collections aren't getting less complex, only more. And we need software that can handle it.

Hurdles / Lessons Learned • • content modeling & unique identifiers cross-domain requests creation of FOXML ingest files comfort with RDF installation-more difficult than it first seems changing our approach multiple times understanding key concepts

Thank You! Questions? Slides will be available at Digital. Commons@WSU. http: //digitalcommons. wayne. edu