URL in OAI record

[kjdon]

Some OAI harvesters require a URL to the document in oai_dc.identifier field. Currently in Greenstone's oaiserver we just output the document id.

We need to make it possible to output a URL. I think this will need to be done in oaiserver source code.

mapping srclink to oai_dc.identifier doesn't work as the link looks like <a href="_httpcollection_/...[collection]...> Don't want the <a> tag here. Also, oaiserver code doesn't do anything with macros or .. metadata format elements. Mappign URL doesn't work either - for the item I looked at it was a file link to something in tmp directory.

It could generate something on the fly using [Source] metadata perhaps. If no Source, or if source doc not saved (eg for html, txt), then there could be a link to the greenstone version using the doc id: ...library.cgi?a=d&c=xx&d=id (would this be a valid link for oai???)

[kjdon]

I have partly finished this. If there is srclink_file metadata, then this is used to generate a URL.

TODO: a solution for those documents which don't have a srclink. My current proposal: Allow an option to plugins to support storing the original file, and then generating a srclink_file metadata. And in oaiserver, if this is not present, provide a link to the greenstone version.

This behaviour may be customisable through oai.cfg file.

[kjdon]

Have done the greenstone version of id.

Now, need to add the plugin options to store the original.

[kjdon]

Have added store_original_file option to BasePlugin