DSpace & OAI-ORE:Object Reuse and Exchange

ARD PrasadDRTC, ISIBangalore

ard@drtc.isibang.ac.in

Pros and Cons

Pros: One need not send metadata &

Digital Object by CD One can have their own IR Central agency like INFLIBNET

can automatically collect digital objects from Universities. Least effort for INFLIBNET

Can leave out collections other than ETD of a University IR (selective Harvesting).

Pros

Some Universities may not have Infrastructure to host an IR

IR sites warrant least downtime and maintainance requires expertise and expense

Cons

Each University has to change metadata schema to suit ETD or UKETD

Object Reuse and ExchangeOAI-ORE

OAI-PMH: Allows metadata to be harvested

OAI-ORE: Allows metadata & bitstreams (digital objects) to be harvested

Two Sides of ORE

Data Provider should enable OAI-ORE Service Provider should be OAI-ORE compliant One can make DSpace repository both a Data

Provider and also a service provider

Enabling DSpace as ORE data provider

XMLUI should be enabled (Older versions may not have XMLUI interface)

E.g.: http://drtc.isibang.ac.in/xmluiShould not be running on https

dspace.cfg

dspace.baseUrl = http://drtc.isibang.ac.in

dspace.url = ${dspace.baseUrl}/xmlui

NOTE: it should not be localhost

Oaicat.properties(optional)

Enable Qualified Dublin Core

Crosswalks.qdc=org.dspace.app.oai.PluginCrosswalk

This allows metadata to be harvested usingQDC schema

One can always harvest simple DC (default) orIntermediate metadata

Oaicat.properties(Optional modification)

You may enable following metadata schema to provide your metadata to others

DC QDC UKETD METSMODS DIDL RDF MARCDIM

NOTE: DSpace harvester uses only DC, QDC and Intermediate Metadata Format

Oaicat.properties(Optional modification)

Identify.repositoryName=LDLIdentify.adminEmail=ard@drtc.isibang.ac.in

config/modules/oai.cfg

dspace.oai.url = http://drtc.isibang.ac.in/oai

There are lots of options that can be enabled or ignored

TestingWhat metadata Schema offered?

Syntax: http://[full-URL-to-OAI-PMH]/request?verb=ListMetadataFormats

Example: http://drtc.isibang.ac.in/oai/request?verb=ListMetadataFormats

NOTE: You should see both “ore” and “qdc”. Be aware of Camel Back Notation in oai verbs

Does ORE gets data?

Syntax: http://[full-URL-to-OAI-PMH]/request?verb=ListRecords&metadataPrefix=ore

Examples: http://drtc.isibang.ac.in/oai/request?verb=ListRecords&metadataPrefix=ore

Does XMLUI Supports ORE?

Syntax: http://URL_of_DL/xmlui/metadata/handle/HANDLE_NO/ITEM_NO/ore.xml

Example: http://drtc.isibang.ac.in/xmlui/metadata/handle/1849/8/ore.xml

If all tests are successful, we can assume the repository is OAI-ORE based data provider

The digital objects can be legally imported to your own repository along with the metadata

One can perform these tests on any repository

Each university repository should enable ORE and test

How to Harvest Digital Objects

Use XMLUICreate/Edit Collection

Click on “Content Source”

This is a standard DSpace collection This collection harvests its content from an external source

Alternative

How to Steal ?

If ORE is not enabled? Screen Scrap full-record by using 'wget' You can use jspui or xmlui side Ignore the pages “If they do not contain dc.title as they can be community/collection pages

Q?

ThanQ