This is a stand-alone and easy to install data provider implementing the [Open Archives Initiative's Protocol for Metadata Harvesting (OAI-PMH)](https://openarchives.org/pmh/). It serves records in any metadata format from directories of XML files using the directory name as `metadataPrefix`, the filename as `identifier` and the filemtime as timestamp. 0-byte files are considered deleted records and handled accordingly. Resumption tokens are managed using files. Sets are currently not supported.
2. Create a data directory in a location not publicly accessible (i. e. outside of `<path>`). Create a subdirectory inside the specified data directory for every format (i. e. `metadataPrefix`) you want to provide.
3. Copy `Configuration/Main.template.php` to `Configuration/Main.php` and edit the settings according to your preferences. Don't forget pointing `$config['dataDirectory']` to your newly created data directory.
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. the file *12345678.xml* can be adressed using the `identifier`*12345678*). 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.
4. Congratulations! Now you are running the newest 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 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.)
This project was originally initiated in 2002 by [Heinrich Stamerjohanns](mailto:stamer@uni-oldenburg.de) at [University of Oldenburg](https://www.uni-oldenburg.de/en/). His latest implementation can still be found via the [Internet Archive's Wayback Machine](https://web.archive.org/web/*/http://physnet.uni-oldenburg.de/oai/).
It was then modified in 2011 by [Jianfeng Li](mailto:jianfeng.li@adelaide.edu.au) at [University of Adelaide](https://www.adelaide.edu.au/) for [The Plant Accelerator](https://www.plantphenomics.org.au/). The modified version can be found in the [Google Code Archive](https://code.google.com/archive/p/oai-pmh-2/).
In 2013 [Daniel Neis Araujo](mailto:danielneis@gmail.com) at [Federal University of Santa Catarina](https://en.ufsc.br/) modified the project again in order to integrate it with [Moodle](https://moodle.org/). His implementation can be found on [GitHub](https://github.com/danielneis/oai_pmh). In 2014 [Kazimierz Pietruszewski](mailto:antenna@antenna.io) provided some [further bugfixes](https://github.com/antennaio/oai_pmh).
The current implementation was derived from the latter in 2017 by [Sebastian Meyer](mailto:sebastian.meyer@opencultureconsutling.com) at [Open Culture Consulting](https://www.opencultureconsulting.com/) for the [German Literature Archive](https://www.dla-marbach.de/en/). It is a stand-alone version focused on easy deployment and file based record handling.
