Portland Common Data Model Lite - very very simple repository-agnostic class compatible with the PCDM.
Should work with either Python2 or 3, but go for 3 if you can.
This is designed to work with repository specific code, such as this test code for creating PCDM-compatible collections and objects in Fedora 4.
This is pre-alpha, under-documented, experimental code. It may work for you and we're happy to help out if you are interested in getting it running but it is not production quality, yet. Raise an issue here if you have a question.
This is also embarassingly simple.
- Get yourself into a Python Virtual environment for your project. TODO - how (Really, you are going to be messing with non-production code here)
- Check out this repository, eg by:
git clone https://github.com/ptsefton/pcdcmlite - Install it (in your Virtual Environment!):
python setup.py install```
There are some rudimentary tests.
There are two classes: pcdmlite: this is a essentially just a simple data structure (even simpler than PCDM)
Quick notes for CSV format.
- Use commas as separators
- Put one item or collection per row.
- Use these columns:
| Column Header | Description |
|---|---|
| dc:identifier : | Required, an ID unique to (at least) your data. TODO: code should assign an ID to the whole spreadsheet to create a unique namespace for these IDs |
| dc:type | What kind of resource this is. You could use a string or a URI. If this row describes a collection put pdcdm:Collection |
| pdcm:Collection | Optional, the ID collection that contains this object or collection, this should appear in the dcterms:identifier column elsewhere in the data file |
| dc:meta | Any other Dublin Core Metatada |
| FILE: | Path for a file to upload |
| REL:predicate | Create an RDF relationship between this item or collection (the subject) and another using (prediate could be a dublin core element like dc:subject, or a full URI), the row would contain the ID or URI of the object. |
To make relationships between existing items using a separate sheet you can use:
| Column Header | Description |
|---|---|
| subject | Subject ID (matches a dcterms:identifier) |
| predicate | An RDF predicate - either a URI or something with dc: frbr: or foaf: namespace (for now) |
| object | Object ID (matching a dcterms:identifier) |
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