Shulou(Shulou.com)06/02 Report--

What this article shares with you is about the four states of entity class objects in hibernate. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

1. Temporary status (transient):

Created with the new statement, it has not been persisted and is not in Session's cache.

Identity: OID is null and does not have a relationship with Session.

2. Persistence status (persistent):

It is planned to be persisted and added to Session's cache. (why plan: whether the transaction has been committed because of the transaction problem)

Identity: OID is not null, established a relationship with Session.

3. Delete status (removed): (it can be ignored, but there is no such status if there are three states)

It is not in Session's cache, and Session has planned to remove it from the database.

Identity: OID is not null and is scheduled to be removed from Session.

4. Off-tube status (detached):

Has been persisted and is not in Session's cache

Identity: OID is not null and does not have a relationship with Session.

These are the four states of entity class objects in hibernate. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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