Overview

Data Type RDF is a module that adds data types (html, xml, boolean) to Omeka S.

Its usage is similar to Numeric Data Types:

Below is an introduction to how to use it.

Usage

Install it the same way as other Omeka modules.

Create a resource template.

Next, select the Data Type RDF values for the data type of a specific property. Here, we add all three types provided by this module.

As a result, the data types are specified as follows:

Go to the item editing screen and select the resource template created earlier.

Then, for the property specified earlier (here, dcterms:description), three input forms appear: “Html”, “Xml”, and “Boolean”.

Each has a different input form, simplifying the input method.

Also, the display method changes according to these data types as shown below:

The JSON-LD output from the API looks like the following. You can confirm that URIs are specified in @type:

The result of converting to RDF/XML using EasyRdf’s converter is shown below. (For Xml, datatype was not applied.)

This was an introduction to “Data Type RDF,” a module that adds data types (html, xml, boolean) to Omeka S. I hope this serves as a useful reference.