optimistic-concurrency - w3toppers.com

Implementing Optimistic lock using Hibernate and Spring

JPA/Hibernate Optmistic locking works by using some field to store the last modified version (e.g. timestamp, long) and then comparing the version of the entity in the session with the entity in the database to see if the change can be saved. For this to work you need to have a field in your entity … Read more

Spring MVC: Validation, Post-Redirect-Get, Partial Updates, Optimistic Concurrency, Field Security

To partially update an entity, you should use @SessionAttributes to store the model in session between requests. You could use hidden form fields, but session is more secure. To use P/R/G with validation, use flashAttributes To secure fields use webDataBinder.setAllowedFields(“field1″,”field2”,…) or create a class specific to the form then copy values to your entity. Entities … Read more