Simple OAI-PMH 2.0 Data Provider

This is a stand-alone and easy to install data provider for the Open Archives Initiative's Protocol for Metadata Harvesting (OAI-PMH) written in PHP. It serves records in any metadata format from directories of XML files using the directory name as metadata prefix, the filename as identifier and the filemtime as datestamp. 0-byte files are considered deleted records and handled accordingly. Resumption tokens are managed using files. Sets are currently not supported.

Just put the records as XML files in the data directory, adjust a few configuration settings and you are ready to go!

A demo installation can be found here.

Installation

1. Deploy all the files to a webserver.

2. Edit Configuration/Main.php and adjust the settings according to your preferences.

3. Create a subdirectory inside the specified data directory for every format (i. e. metadataPrefix) you want to provide.

4. Put the records into the respective directories according to their format. Each record has to be a separate XML file with its identifier as filename (e. g. 12345678.xml). Optionally you can maintain deletions by keeping 0-byte files for deleted records.

5. Congratulations! Now you are running your own Simple OAI-PMH 2.0 Data Provider. You can access the entry point by calling index.php?verb=Identify in your browser.

Upgrading

1. Backup all data (especially Configuration/Main.php)!

2. Replace all files except your data directory with the new release.

3. Move your configuration back into Configuration/Main.php.

4. Congratulations! Now you are running a new version of the Simple OAI-PMH 2.0 Data Provider. You can access the entry point by calling index.php?verb=Identify in your browser.

Updating

Updating your records is just as easy with the update.php script! The script automatically handles deletions by maintaining 0-byte files for deleted records. Just call php update.php from the command line and follow the instructions. (Of course, you can simply replace the records manually as well.)

History

This project was originally initiated in 2002 by Heinrich Stamerjohanns at University of Oldenburg. His latest implementation can be still found via the Internet Archive's Wayback Machine.

It was then modified in 2011 by Jianfeng Li at University of Adelaide for The Plant Accelerator. The modified version can be found in the Google Code Archive.

In 2013 Daniel Neis Araujo at Federal University of Santa Catarina modified the project again in order to integrate it with Moodle. His implementation can be found on GitHub. In 2014 Kazimierz Pietruszewski provided some further bugfixes.

The current implementation was derived from the latter in 2017 by Sebastian Meyer at Open Culture Consulting for the German Literature Archive. It is a stand-alone version focused on easy deployment and file based record handling.