1. How to specify pessimistic lock with Criteria API? stackoverflow.comI am retrieving a list of objects in hibernate using Criteria API. However I need lock on those objects as another thread executing at the same time will get the ... |
2. Pessimistic locking is not working with Query API stackoverflow.com |
3. JPA synchronizing entity accessors stackoverflow.comHere's the setup: the entity class has the collection of other entities that is loaded lazily. The trick is, I need to perform some data-related work (for example, I want to ... |
4. JPA: pessimistic locking etc. coderanch.comWe have a system that processes these events that it receives. The system could be processing several different events at a time in parallel. Processing of these events results in db updates and will need to make sure these updates don't cause StaleStateExceptions. I was thinking I'd have one session for each client and keep it always open as long as ... |
5. Does hibernate support pessimistic locking forum.hibernate.org |
6. Pessimistic lock with many sessions forum.hibernate.orgHi, We are working on a j2ee platform with struts, we are using threadlocal for stroing hibernate session and we open and close a that session for each action on the client side. I am wondering if we can use pessimistic lock when openning and closing the session between each action (eg getUser() - > saveUser()). Thanks in advance |
7. Documentation about pessimistic Locking forum.hibernate.org |
8. Is Pessimistic Locking appropriate? forum.hibernate.orgHi All- I'm looking for an opinion on an appropriate locking strategy for an application we're building. Basically, we are building a very high volume, real-time demand forecasting application. This application executes primarily through asynchronously generated events, and does result in semi-frequent concurrent updates of certain entities. Our transactions are typically very brief, and usually consitent of us loading an object ... |
9. pessimistic lock and setMaxResults() problem forum.hibernate.orgHi, I have one query which has been working for a while, no I have to use pessimistic locking with this query. I do the following, If I remark the maxAmount part, it works if I remark the setLockMode() part it works but if both are used I got the following sql generated -> select * from ( select mitgliedsc0_.mg_nr as ... |
10. Pessimistic locking.. forum.hibernate.org |
11. pessimistic locking across several transactions forum.hibernate.orgHi Everybody, I'm working on a layered web application and I reached the save() step of a several request/response cycles. During the 7 first steps the user is filling forms and the business layer perform business rules checking upon those entries. Just before saving all the data the user entered I need to verify at a business level that the data ... |
12. Pessimistic Locking forum.hibernate.org |
13. Pessimistic locking and concurrency forum.hibernate.orgI am writing a application that uses hibernate and I can't see how to work around needing pessimistic locking that will last beyond one session. My understanding is you can't do multi session pessimisitic locking in hibernate, am I right? I know there is are several people who want more complex locking behavior for tasks where it isn't needed but I'm ... |
14. Pessimistic DBs (support of FOR READ ONLY and WITH NO LOCK) forum.hibernate.orgShort version: How do we utilize FOR READ ONLY and WITH NO LOCK in DB2/U and MSSQL? Some general background: We're currently using Hib 2.1.6 on DB2/UDB 8.1, in a web application using the HTTPFilter based thread local Hibernate session pattern. We've found that without Hibernate appending "FOR READ ONLY" to select queries, we can only support around half a dozen ... |
15. Pessimistic locking with Firebird forum.hibernate.orgI am a newbie "Hibernator" and I asked myself how to lock a specific record using Firebird 1.0/1.5. I need this to implement some kind of sequence/generator-like counter. If I use standard (?) session.lock(obj, LockMode.UPGRADE) functionality Hibernate 2 and 3 seem to fire a "SELECT ... FOR UPDATE" command. But AFAIK this is not the way to go for a pessismistic ... |
16. Problem trying Pessimistic Locking forum.hibernate.org |
17. Problem with hibernate pessimistic locking... forum.hibernate.orgNewbie Joined: Fri Nov 25, 2005 11:24 am Posts: 4 I got problem with hibernate pessimistic locking: exp: Code: public class Account { private Long id; private String user; private int balance; ... } public class AccountManager { public static void deposit(long id){ ... |
18. Pessimistic locking and LOCK TABLE in Hibernate2.1.3 forum.hibernate.org |
19. Pessimistic locking? forum.hibernate.orgThanks David, My apologies I did not understand your reply/question. In both cases I start a transaction right before executing a query on the session object and I commit right after updating the value. Code: tx = sess.beginTransaction(); Query query = session.createQuery( SELECT_SOMETHING ); Iterator iterator ... |
20. Problem With Pessimistic Locking forum.hibernate.org |
21. JPA and pessimistic lock @OneToMany question forum.hibernate.orgNever mind, I found this when looking at org.hibernate.annotations.CascadeType.LOCK This option cascades the lock() operation to associated instances, reattaching them to the persistence context if the objects are detached. Note that the LockMode isnt cascaded; Hibernate assumes that you dont want pessimistic locks on associated objectsfor example, because a pessimistic lock on the root object is good enough to avoid concurrent ... |
22. Hibernate's Pessimistic Locking forum.hibernate.orgHi All, I'm having a serious concurrency problem with hibernate. I'm writing a program which need to update a row of customer's balance everytime the customer made a transaction. When 2 transactions come together, this will happened: 1. Transaction 1 retrieve the last state of customer balance (say it A) 2. Transaction 1 updated the balance to B 3. Transaction 2 ... |
23. Pessimistic lock forum.hibernate.org |