1. Should we use LockOptions instead of LockMode in hibernate query? stackoverflow.comI see two classes for locking in hibernate 1. LockOptions 2. LockMode What is the difference between two? When to use each? |
2. LockMode.READ in Hibernate stackoverflow.comI'm new to Hibernate and trying to understand more about the LockModes. I found below text in book "Java Persistence with Hibernate": |
3. Clarification on Read and None LockMode in Hibernate? stackoverflow.comAs per Read LockMode in Hibernate docs It is a shared lock. Objects in this lock mode were read from the database in the current transaction, rather than being pulled ... |
4. Issue i am getting during LockMode.READ in hibernate? stackoverflow.comAs per LockMode.READ:- Objects in this lock mode were read from the database in the current transaction, rather than being pulled from a cache. So I tried below code snippet |
5. How to replate LockMode.OPTIMISTIC_FORCE_INCRE forum.hibernate.org |
6. Understanding LockMode.READ forum.hibernate.orgI'm new to Hibernate and trying to understand more about the LockModes. I found below text in book "Java Persistence with Hibernate": LockMode.READBypass all caches, and perform a version check to verify that the object in memory is the same version that currently exists in the database. Does that mean, calling session.lock(myObject, LockMode.READ), will refresh my Object state from Database? From ... |
7. LockMode problem forum.hibernate.orgi think this is a very common case: in a transaction,load an object from database,check some attributes of the object to determine whether you can update the object. try{ tx=session.beginTransaction(); Foo f=(Foo)session.load(Foo.class,id); if(f.getSomeFlag()){ throw new YouCannotUpdateFooException(); }else{ f.setSomeAttr("someAttr"); } tx.commit(); }catch(Exception e){ if(tx!=null) tx.rollback(); throw e; } (the isolation level of my database is greater than repeatable-read.) i don't know in ... |
8. Session.lock(object, LockMode.READ) prints annoying StackTra forum.hibernate.orgCalling Session.lock(object, LockMode.READ) on a stale object prints an annoying StackTrace before throwing a StaleObjectStateException. According to the API specs, this exception is expected so I believe Hibernate shouldn't print any stack trace when such event occurs. We are using the Session.lock() to detect changes and invalidate our cached data. In this case, the exception is nothing that can occur and ... |
9. session.lock with LockMode.NONE forum.hibernate.orgJust want to make sure we are doing this correctly... 1. We want to load an object 2. Update the object in another layer in a browser. (disconnected) 3. Come back and reassociate the object with a Session and use saveOrUpdate to commit the new changes and updates. Question: Is session.lock(foo, LockMode.NONE) the same as reassociating the transient object with a ... |
10. Query.setLockMode() doesn't seem to actually set lockMode forum.hibernate.orgUnder Hibernate 2.1.5 and 2.1.6 against Oracle 9.2.0 (via Oracle9Dialect), it seems that executing an HQL query with a lock mode set on a column alias via setLockMode("alias", LockMode.UPGRADE) doesn't actually mark the object as UPGRADEd in the session, at least in conjunction with joins. It does remember to put "for update" on the SQL though. So something like this: Code: ... |
11. Hibernate LockMode forum.hibernate.org |
12. Use of LockMode - Examples forum.hibernate.org |
13. LockMode problem forum.hibernate.orgHello, I try next scenario with hibernate : Step 1) user populate rows in session A and close session A Step 2) use choose row 1 and change Step 3) user call save and commit work It work fine except that another user can update row 1 between step 1 and step 2 and his changes aren't saved Now I want ... |
14. OpenSessionInViewFilter vs LockMode.NONE forum.hibernate.org |
15. LockMode constants forum.hibernate.org |
16. net.sf.hibernate.LockMode cannot be resolved forum.hibernate.orgNeed help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp [b]Hibernate version:3.0[/b] [b]Mapping documents:[/b] [b]Code between sessionFactory.openSession() and session.close():[/b] [b]Full stack trace of any exception that occurs:N/A[/b] [b]Name and version of the database you are using:MySQL 4.1[/b] [b]The generated SQL (show_sql=true):N/A[/b] [b]Debug level Hibernate log excerpt:N/A[/b] ------------------------- I am using MyEclips /Eclips 3.1 with Spring 1.2, MySQL, JSF and Hibernate. I ... |
17. net.sf.hibernate.LockMode cannot be resolved forum.hibernate.org |
18. lockmode on projected entity doesn't work forum.hibernate.orgI'm having the same problem with Hibernate 3.1.3. Did you end up solving yours? For the curious: I stepped through the hibernate code in the debugger. The NullPointerException in CriteriaLoader.applyLocks happens because its local "entityAliases" array is null; that array is null because the "aliases" field (defined in OuterJoinLoader) is null. So the question is, where did (or should) OuterJoinLoader.aliases come ... |
19. LockMode.NONE and get() forum.hibernate.org |
20. What excatly does LockMode.READ do? forum.hibernate.orgWhat excatly does LockMode.READ do? I read the documentation and tried out an example too. It dosen't seem to fire any special query on database. I first loaded and object from db then executed a load request with lockmode read. it fetched the object from the cache without hitting the db. Can someone please tell me what does this lock mode ... |
21. No difference between refresh() and load() on LockMode.READ? forum.hibernate.org |
22. Clarification on Read and None LockMode in Hibernate? forums.oracle.com |