You could run a query to get a resource with specific criteria (e.g. it has an rdfs:label which has the users name). If you get a result, replace the triple which has their GPS, otherwise create a new Student.
-----Original Message----- From: neha gupta [mailto:[email protected]] Sent: Tuesday, September 6, 2016 3:13 AM To: [email protected] Subject: Creating individuals if not already exists I have created Students individuals in Jena and stored them in a file. Every time students login, updates their information like GPA and updates stored in the file. Student.createIndividual(ns, stdName); With this statement, suppose a student Neha is created with her information in the file. Next time, she login, again a new instance will be created when the application executes *Student.createIndividual(ns, stdName);?* *Is there any condition which states if the individual not already exists, create it otherwise skip createIndividual statement?*
