The SPARQL query language is extensible by nature: it allows implementors to define their own custom operators if the standard set of operators is not sufficient for the needs of some application.

Sesame’s SPARQL engine has been designed with this extensibility in mind: it allows you to define your own custom functions and use them as part of your SPARQL queries, like any other function. In this new recipe, I’ll show how to create a simple custom function. Specifically, we are going to implement a boolean function that detects if some string literal is a palindrome. read more…

Comments are closed.