A practical and efficient scheme for data synchronism of Sakai CLE
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The document discusses a graduate student at Tianjin University who is a developer of the Sakai CLE learning management system. It provides details about Tianjin University, including its establishment in 1895 and current student and faculty numbers. It describes Sakai's implementation at TJU, including initially using Moodle, developing a localized version of Sakai CLE, and integrating single sign-on. It outlines the data synchronization between Sakai and the university's official systems to update user and course information automatically.
A practical and efficient scheme for data synchronism of Sakai CLE
- 2. About Me A graduate student of TJU A developer of Sakai CLE An English beginner
- 3. TianJin University Established in 1895 A national university under the direct administration of the Ministry of Education of China 15,620 Undergraduate Students 10,139 Graduate Students 2,953 PhDs 4,489 Faculties
- 4. Sakai in TJU 2011: We were using Moodle 2012: Secondary development of Sakai CLE Localization Single Sign On system(Based on CAS) Data Synchronism New tools
- 6. Sakai in TJU 2013: Beta testing & launched Until Now: 12443 users 425 active sites
- 7. Data Synchronization User management Each student or faculty should has an official account in Sakai Course management Course and roster information should be inserted into Sakai
- 8. Data Synchronization Update issue New users appear Course information changes Effective/Simple/Flexible
- 9. Data Synchronization When to transfer the information ? How to transfer the information ? How to update the information ?
- 10. How we solve it Based on an Idea: Unify those information which is required Update those information that already exists in the local database
- 11. Local Database (Sakai Server) Remote Database (Official System) Check a trigger not exist already exist response
- 12. Faculty Login SSO(CAS) Create a new site/Update request Other Activities LocalDatabase (Sakai) UserInform ation CourseInfor mation Add the user information to local Add the course information to local
- 13. How we solve it Get information by Webservice Simple/Efficient Security/Permission
- 15. How to update Scheduled task Quartz New API getAllEnrollmentSets(String termId) Update the existing enrollments at 3:00 AM everyday
- 16. How to update Rewrite the action that faculties can update their course and roster information at any time
- 17. What we plan to do A course manage tool for admin
Editor's Notes
- #7: In 2013, our new e-learning system launched and until now, there are more than 12 thousands users and 425 active sites in this system. Our university is a new adopter of Sakai and we are trying our best to encourage teachers and students to use it.
- #10: There are three specific problems that we should solve. “Transfer the information” means that we get the information from remote database, and then copy the information to the local database. OK, let’s solve these problems.
- #11: Our method is based on this idea: we just care about those information which is required, and we only update the existing information. We don’t have to transfer all the course information, all the user information to the local database and maintain an update process.
- #12: It is a workflow about it. When a user request an update process to the Sakai Server, the server would check whether the information has already existed in the local database. If not, send a request to the remote database and then the remote database could return the required information. Then the Sakai Server will insert the information to the local database.
- #13: This is an specific example about a teacher’s activity. When the faculty login, the SSO system will check whether the user is valid, if so, the Sakai server would get an account from SSO system, if the account is not in the Local Database, the server will request the remote database to get the User Information and added this user in Local Database. Same method is applied to transfer the course information.
- #15: This is an example of webservice. This webservice returns a string that contains all the course information related to the teacher 997127 in term 12131. It looks like a select statement.