API for reading/updating Lightroom metadata

Question

I've tried looking for documentation, and I can't find it, so...
Is there an officially sanctioned mechanism for third party applications to read and edit Lightroom metadata? In particular, the keywords that have been assigned?
My use case is as follows. I pull photos in to Lightroom, edit, adjust, add metadata, and so on. Then, for some of them, I export them to Flickr, using the Flickr Uploadr tool.
Sometimes, based on comments on the photos, I may want to edit the metadata. I can do this, but I need to edit it in both places, Lightroom and Flickr.
Flickr publishes an API for rummaging through photos, extracting metadata, and so on. So what I'd like to do is develop a tool that periodically looks at my photos on Flickr, compares the keywords it finds there with the keywords in Lightroom, and synchronises them. The Flickr side of that is fairly easy, but the Lightroom side doesn't appear to be documented.

Answer 1

Hi Birla,
try this:
IResource res = ResourceFactory.getInstance().getResource(path,context);
IPropertyName propName = new PropertyName("http://ars.com/xmlns/cm","Region");
java.util.List values = new List();
values.add("Asia");
values.add("America");
values.add("Muenster, Germany");
IProperty property = new Property(propName, PropertyType.STRING, values);
res.setProperty(property);
Best regards,
Michael