This module provides an implementation the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) for Islandora fedora repository with a solr index. By implementing the islanodra_oa module, you can expose content (its metadata) as an OAI-PMH repository. It will then be accessible by OAI harvesters For further OAI documentation. For more info, please see this link.
With this module you can:
- Receive OAI-PMH request of service providers in form of HTTP request (GET or POST)
- Handle the OAI-PMH request
- Respond to OAI-PMH request in form of HTTP response (XML) to the service provider
This module requires the following modules/libraries:
Install as usual, see this for further information.
Configure the basic details of the repository in Administration » Islandora » Islandora OAI (admin/islandora/tools/islandora-oai).
After you have exposed content types and some fields, your repository is available at /oai2
Some example requests are as follows:
*/oai2?verb=Identify*/oai2?verb=ListMetadataFormats*/oai2?verb=ListIdentifiers&metadataPrefix=oai_dc*/oai2?verb=GetRecord&metadataPrefix=oai_dc&identifier=PID*/oai2?verb=ListRecords&metadataPrefix=oai_dc
Services like WorldCat expect links back to the object such as a Handle URL. If your metadata doesn't have this there are two approaches that can be used. Self transforming XSLTs can be used to add specific elements tailored to individual needs. However, there is options in configuration to append on URL values to the XML output of OAI. Each metadata prefix has an individual set of configuration. If selected, a user can define where the object URL will get appended in the output returned.
Similarily, OCLC's Digital Collection Gateway can take advatange of thumbnail URLs for rendering. This option is only currently available for oai_dc requests. If selected, a URL to the object's thumbnail will be added as a dc:identifier.thumbnail if the object has a thumbnail.
If existing content has already been harvested and/or the url and thumbnail are not mapping in Digital Collection Gateway, you will need to map those manually in the 'Metadata Map' for a given collection/set.
By default the vanilla islandora_oai module provides a very basic output. It is possible to add additional content to the description field of the repository. This includes pointing at other harvesters and repositories, branding information etc. An example of how to implement these can be referenced in the 6.x version of the module.
The original 6.x version of this module was based off of the OAI2ForCCK module located here.
The responses generated by this module have been validated against Open Archives' Validation.
Having problems or solved a problem? Check out the Islandora google groups for a solution.
Current maintainers:
If you would like to contribute to this module, please check out our helpful Documentation for Developers info, as well as our Developers section on the Islandora.ca site.