REFRESH « Query « JPA Q&A





1. What does CascadeType.REFRESH actually do?    stackoverflow.com

What does the CascadeType.REFRESH actually do? The definition for it is "When we refresh an entity all the entities held in this field refresh too", but what does this mean in ...

2. Hibernate query cache automatically refreshed on external update?    stackoverflow.com

I'm creating a service that has read-only access to the database. I have a query cache and a second level cache enabled (READ_ONLY mode) in Hibernate to speed up the service, ...

3. JPA CascadeType.REFRESH not working?    stackoverflow.com

I am facing a strange issue with JPA CascadeType.REFRESH attribute. I have a simple parent-child relationship in which in parent domain object(LineEquipmentFormat) I have added the cascade attributes like below

OneToMany(cascade = { ...

4. Could not force hibernate to go to the database to get new object    stackoverflow.com

Session Factory:

hibernate.current_session_context_class=jta
hibernate.cache.use_second_level_cache=false
Transaction: - UserTransaction is used. getCurrentSession() of SessionFactory is used to get Session. The problem is that I could not force the hibernate to access database to get the new values using Session.get(...) ...

5. refresh collection of objects in hibernate    coderanch.com

Hi all i have some very rough going with hibernate. i have a collection of Test Objects which i retrieve using hiberante.Works fine no problem. Later i ask user to insert new Test. Because of some problem adn some complex programming, i am using normal jdbc programming (like connection, statement.execute) to insert the new Test. now i when i again use ...

6. Hibernate XDoclet Set Refresh    coderanch.com

Hey I am using the below hibernate XDoclet code to get the TempRequest objects as set. The problem I am facing is, that if i update the table associated with this set, this set does not get refreshed. I have used everything like... session.refresh session.load etc It might be refreshing the Object but not the set in the same web appliaction ...

7. Problem with refresh() method of EntityManamger in JPA    coderanch.com

Hi All, My simple code of saving a entity, retrieving it back using find method of entity manager in other reference and then checking both the references for equality using equals method and == operator works fine. Now the problem is once I introduce a composite pk inside same entity.... the refresh method starts giving me problem I'm not understanding why.... ...

8. Hibernate 2: hsess.refresh(book); (or "is anything changed in the db")    coderanch.com

Hi, Lets say I have 2 fields in book. I retrieved book from the db. Changed one of the fields using a set method of the class. Now, some other process might have changed the other field and persisted the book into the db. So now I want to check if this happened. what I want to do is hsess.refresh(book) to ...

9. hibernate cache mode - put vs refresh    coderanch.com

The JavaDoc for CacheMode.PUT and CacheMode.REFRESH have the same first sentence "The session will never read items from the cache, but will add items to the cache as it reads them from the database." REFRESH adds "In this mode, the effect of hibernate.cache.use_minimal_puts is bypassed, in order to force a cache refresh ". Presumably this sentence is the difference between the ...





10. JPA and multiple JVMs - refresh problems    coderanch.com

I have two application which point to same database but run under different JVM. 1. Admin application - The admin application is responsible for adding some entites, reporting....., runs under Tomcat6. 2. Service application - The service application does some processing, running outside Tomcat6. There is table called as DTR, when a new DTR is added through the Service application and ...

11. refresh does not work!    forum.hibernate.org

Hi all. I have loaded an object from DB, then I have update a field and finally I have invoke the saveOrUpdate method to persist the changes. In the onFlushDirtyMethod of my interceptor, I update a field of the father (one-to-many bidir) with an SQL query. Then I invoke the refresh method for the father entity. What I try is to ...

12. refresh() in conversations    forum.hibernate.org

1. The API Javadoc for refresh() warns that using the session.refresh() method to maintain long conversations is not recommended. Why not? What are the main concerns? 2. I intend to use refresh() conversationally, though I doubt the conversations will be all that long. Basically, to reattach to an entity that is backing a table-row (or any other control), if the application ...

13. NonUniqueObjectException after refresh and then update    forum.hibernate.org

I promise I searched the heck outta this forum, google, and all of cyberspace before coming here to ask you guys what the heck is going on. My next step after this forum post is to pull my hair right out of my head. my version: 3.2.1.ga , but i have also tested in 3.3.2.GA, and the EXACT same result is ...

14. session factory refresh    forum.hibernate.org

hi all, how to flush session factory object? Session factory is created at the time of server started after some times some one update database i.e delete table and recreate such case some time result not occure how to handle this situation i thing need to refresh session factory but i haven't go how?

15. refresh() does not work    forum.hibernate.org

Hi, I'am using a simple dialog that implements CRUD-functionality on one single entity. If only one user works with the datebase (mysql) there is no problem but multi-user environment is a big problem. If another user changes data the fist one doesn't see the changing. I can't believe why hibernate doesn't refresh the data. Before showing it to the user. I'm ...

16. How to refresh the query?    forum.hibernate.org

I have a problem. My query doesn't have the actual state of the database. So... I created my tables, I made some inserts and some search-queries. And all is alright, but, If a change a value in DB(directly, without using the java code), the search-query returns the old state. What should I do make this thing to work? :) P.S. I ...





17. JPA and multiple JVMs - refresh problems    forum.hibernate.org

Hello All, I have two application which point to same database but run under different JVM. 1. Admin application - The admin application is responsible for adding some entites, reporting....., runs under Tomcat6. 2. Service application - The service application does some processing, running outside Tomcat6. There is table called as DTR, when a new DTR is added through the Service ...

18. Problems with cach refresh    forum.hibernate.org

Hi, I'm trying to refresh a few rows of a table that have been modified by a third party server. The problem is that hibernate has cached these rows and I can not cool them. I tried this by removing the L2 cache, cleaning the cache with evict, making a clean cache, including closing and reopening the session. The result has ...

19. Refresh object - incident    forum.hibernate.org

Hi all, I have developed some applications with Hibernate and today I have an incident that I didn't resolve yet. The incident is: If I update some object (update/merger method and commit transaction) and execute some query (begin transaction / criteria.list) this object appear with old data in my list. If firstly I refresh my UI (Web app) the object appear ...

20. Best Practices on object refreshing    forum.hibernate.org

TL;DR I want to prevent the user from overwriting objects in the database, yet allow them submit custom objects. Hello Everyone, I am pretty much a noob with Hibernate and Spring. But I have an architectural problem that I was wondering if you could help me. Here is the scenario, the user wants to save a car object. The car object ...

22. Refreshing Objects in Session    forum.hibernate.org

Hi, I have a login page and once the user is logged in i will add the user object in the servlet session. This user table has one to many relationships with many tables. One of the table is EmploymentDetails. One user might have more than one entry in employment table. When the user wants to see the employment details, he ...

23. Does 2nd level cache have refresh mechanism ???    forum.hibernate.org

24. find and refresh cache    forum.hibernate.org

Thanks for response, So, if I have a class public class foo{ String id; String state; Bar myBar; // many-to-one ... getters and setters... } If my instance in the cache have : id = "THISONE" state = "unmodified" myBar = "someBarWithIdEquals1" and in the database there is an update of the foo : id = "THISONE" state = "justModified" myBar ...

25. session refresh and object    forum.hibernate.org

Hello I need some help concerning refresh an object and lock it. While I do this in a session calling public void refresh(Object object, LockMode lockMode) throws HibernateException I got no response, may be another session locks this object too. How can I set a timeout like I can do this for queries, or is there another way to simulate the ...

26. Session cache refresh    forum.hibernate.org

Hi, I'm having some problems with session cache and i'm asking for your help. I have 2 threads each one with it's own session (i call it Session A and B), and they are acessing to a database. They both load the same object from the database, and Session A changes that record and stores it back in the database. Than ...

27. Understanding Session.refresh(Object)    forum.hibernate.org

According to the JavaDoc on Session.refresh(Object): Code: /** * Re-read the state of the given instance from the underlying database. It is * inadvisable to use this to implement long-running sessions that span many * business tasks. This method is, however, useful in certain special circumstances. ...

29. Can proxied objects be refreshed?    forum.hibernate.org

Hi all I have a persistent object called AssetImpl that is proxied by the interface AssetORInterface. The part of the mapping file that declares the AssetImpl looks like this: Interface AssetORInterface is a subinterface of Asset. The 3 Java files therefore look like: public class AssetImpl implements AssetORInterface public interface AssetORInterface extends Asset ...

30. second-level cache and session.refresh()    forum.hibernate.org

31. refresh(Object) => Exception: Instance does not exist    forum.hibernate.org

Hi I have a problem with session.refresh: if i call the refresh on an newly inserted object (with saveOrUpdate) inside the transaction, i get an exception: net.sf.hibernate.HibernateException: this instance does not yet exist as a row in the database if i call refresh after the commit everything works fine. Is that ok? I am using hibernate 2.1.1 with postgres 7.4 Lars ...

32. Forcing refresh of query cache    forum.hibernate.org

33. Session refresh method    forum.hibernate.org

Object pp1 = session1.load(..); //use same pk session1.close(); Object pp2 = session2.load(..); //use same pk session2.refresh(pp1); ///here object pp1 have the ...

34. Web application Cache is not refreshed    forum.hibernate.org

Hello, I'm using Hibernate V2.1.2, MySQL V4.0.16, Tomcat 5.0.18 The Database is changed from two sources: a WebApp and a Daemon that runs on a single thread. They use the same code to access the database. My problem is that the WebApp is ignorant to changes on the database outside of the webapp's scope, such as creating, deleting, etc. On the ...

35. REFRESH    forum.hibernate.org

are you using second level cache? Don't know how. are you sure of your hibernate session management? ?!?! are you sure the changes made "outside" app scope are comitted? The changes are committed. ----------------------------------------------------------------------- I am using this hibernate.cfg.xml ... net.sf.hibernate.dialect.MySQLDialect FALSE net.sf.hibernate.transaction.JDBCTransactionFactory net.sf.hibernate.cache.HashtableCacheProvider ... And this code: Session sess = currentSession(); List ...

36. Objects not refreshed when outside app changes the database    forum.hibernate.org

Hibernate version: 2.1 I'm a newbie to Hibernate, and can't find help on why my User object doesn't reflect changes made in the database between calls. For example: 1) session.load User object. Let's say the name is "Ving" 2) Display User object on jsp. Displays "Ving". 3) Change the user's name in the database manually to "Bing". 4) session.load User object. ...

37. sets not refreshed even though cache is read-write    forum.hibernate.org

Hibernate version: 2.1.6 Mapping documents: ...

38. Query result will not refresh after edit database    forum.hibernate.org

Hibernate version: 2.1.8 I design a program use hibernate to manage my logs, all logs will be listed by my program.The logs are automatic inserted to database by another program. The problem is that : after I start my program to query and show log, all new coming logs which is inserted by another program will not be detected. For example, ...

39. refresh vs replicate    forum.hibernate.org

hi 1. load object from database (session.load()) 2. store object into HTTP session 3. next HTTP request (object becames detached) 4. Q: how to reattach the detached object (for reading)? - session.update() doesn't have a sense (I don't want to update DB) - session.refresh() works, but documentation says it should be used only if I use triggers etc ... - session.replicate(parendObject, ...

40. Refresh After Insert    forum.hibernate.org

Hibernate version: 3.0.5 In the Hibernate application that we're working on, we've got a generic saveObject method in one of our DAOs. The intent of this method is to insert the object if it is transient or "update" it if it is detached. The database we're using has a set of triggers that execute before inserts and updates that set some ...

41. CacheMode.REFRESH ??    forum.hibernate.org

I was readig through the documentation regarding caching, but i am not clear with the following lines.... CacheMode.REFRESH - write items to the second-level cache, but don't read from the second-level cache. " If it does not read from second-level cache then what is the real advantage of caching ". I have been considering this option because in my application the ...

42. No refresh problem    forum.hibernate.org

Hi, I'm developing a standAlone application wich will run on several machines each one a particula instance of it. Each instance access the same and Unique MySql server wich is running on one of these machines. The application uses Hibernate to map the data from/to Database. The problem is that when I persist an object using the saveOrUpdate method drawed below, ...

43. merge() refresh problem    forum.hibernate.org

44. 'where' property ignored on session.refresh()    forum.hibernate.org

Been pulling my hair out all day trying to figure out a way to map some hibernate objects on top of a small portion of our ERP system, and I'm at a nasty impasse. I've got the following mapping file: Code:

45. Refresh collections after update    forum.hibernate.org

Beginner Joined: Thu Jul 14, 2005 10:11 am Posts: 32 Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: 3.0.5 Mapping documents: Code: ...

46. How to refresh efficiently a set of objects    forum.hibernate.org

Hello everybody, I'm wondering, how to refresh efficiently a set (or even better s subset) of objects which is already present in the first-level cache (session cache). The example scenario is pretty simple: a fat-client presents a list of customers and a single refresh button. Whenever the user clicks "refresh" the list should be updated based on the most current database ...

48. How to refresh second level cache after direct SQL update?    forum.hibernate.org

ehcache is your first-level of cache (it is only for the current session). 2nd level cache is managed by SessionFactory and spans sessions (within a JVM, and actually supposed to work in cluster - never tried that however)... Try evicting/flush..etc. from each of the session and sessionfactory and you should be able to get the results - I'd think - if ...

49. refresh    forum.hibernate.org

50. refresh cache manually    forum.hibernate.org

52. question about refresh    forum.hibernate.org

Whenever you pass an object to save(), update() or saveOrUpdate() and whenever you retrieve an object using load(), get(), list(), iterate() or scroll(), that object is added to the internal cache of the Session. When flush() is subsequently called, the state of that object will be synchronized with the database. If you do not want this synchronization to occur or if ...

53. Partial refresh    forum.hibernate.org

54. Problems with cache refresh    forum.hibernate.org

Hello, I'm using Hibernate 3.1.3 with Tomcat 5.5.20, SqlServer2000 and Java 5(updater 09) . I have a problem in refreshing my data. I select a data row and change some data. I store the data to the database and the data is persistent. If I do a new select the new data is visible, but if I do a select for ...

55. Hibernate refresh problem,    forum.hibernate.org

Hi, I am developing some applications in hibernate ,tomcat,eclipse environment. I have developed a jsp, but while refreshing the jsp using F5 button i get some errors. These are the errors. Caused by: org.hibernate.exception.GenericJDBCException: could not execute query at org.hibernate.exception.ErrorCodeConverter.handledNonSpecificException(ErrorCodeConverter.java:92) at org.hibernate.exception.ErrorCodeConverter.convert(ErrorCodeConverter.java:80) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.loader.Loader.doList(Loader.java:1596) at org.hibernate.loader.Loader.list(Loader.java:1577) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:395) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:271) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:844) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:74) at it.lispa.bdi.db.UocProgrammaDAO.getAvailableProgramma(UocProgrammaDAO.java:77) at it.lispa.bdi.service.ServiceProgramma.getAvailableProgramma(ServiceProgramma.java:154) at ...

56. How to refresh a collection?    forum.hibernate.org

Hi, how to refresh a collection of an entity? I have an entity which has many collections. and I don't want to refresh the whole entity (to avoid unnecessary DB traffic) but only one collection. The Session.refresh() method only accepts an entity and not a collection. Is there a solution? Regards, Markus

57. Session.refresh(object) Question    forum.hibernate.org

Hibernate version: 3.2.2 Name and version of the database you are using: MySQL 5 I have a problem with refreshing objects. Code: Station station = new Station(); station.setName("1"); SessionFactory f = KLTMContext.getSessionFactory("test_hibernate"); s1 = f.openSession(); s2 = f.openSession(); Transaction t = s1.beginTransaction(); s1.saveOrUpdate(station); t.commit(); ...

58. Session.refresh() inadvisable    forum.hibernate.org

Hello, I have come across a situation in my application that appears to call for using Session.refresh(). However, I see that the javadoc for that method indicates it is "inadvisable" -- so I thought I would post here to understand what the potential problems with Session.refresh() are. Let me describe my scenario. Essentially I have a work queue where I want ...

59. Problem with refresh()    forum.hibernate.org

Firstly, I will explain what it is my problem. I have several objects which need to keep track of its history. Everytime I save a change I have to create a history object and then modify it. The thing is that I modify the object and then i get the cop from the data base. In order to do this I ...

60. refresh() throw exception    forum.hibernate.org

61. Why refresh() doesnt work after an insert?    forum.hibernate.org

Hello! I was trying to refresh a transient object after an insert (a new db entry) and it did not work. Could anybody tell me why it doesnt work for me? Im working in a Web Application with Spring and I need to handle the last inserted object in another page. I have following code: Code: public class GenericDao extends HibernateDaoSupport ...

62. Refresh after update    forum.hibernate.org

I'm seeing an issue with cacheing. I'm not sure if this is a setting to be altered using hibernate or something else. So on a login screen i have some stats i'm showing to the user, one being their favorite venues. Code: @ManyToMany(cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REFRESH}, fetch=FetchType.EAGER) @org.hibernate.annotations.Cascade(value = {org.hibernate.annotations.CascadeType.SAVE_UPDATE}) public ...

63. refresh property    forum.hibernate.org

Hello i have this mapping document -> (have many) items in database I create view SELECT d.id, sum(i.price) AS sum FROM document d, item i .... in file document.hbm.xml Sum.hbm.xml have id & sum property Now, when I get first value sum is correct but, when I add item to document relationship I get old sum. How ...

64. How to refresh a collection?    forum.hibernate.org

I am working with a detached object, and some other process has updated one of its collections. I'd like to be able to refresh just this collection. I can force a refresh of the collection by refreshing or reloading the object, however this refreshes everything on the object, so is very inefficient if the object has other large collections that don't ...

65. A Simple Question on Refresh()    forum.hibernate.org

Hello All, I am using Hibernate 3.2.6 So I have a Container with a collection of Items. The user retreives his Items from database on restarting an old conversation. (session-per-conversation approach) In the process he adds more Items, which are transient. Now When I call session.refresh(Container container) it gives an UnresolvableObjectException as it also tries to refresh some of the transient ...

66. Hibernate session.refresh in hibernate pagination    forum.hibernate.org

Hi All, I want to retrieve updated values from table using select query. I used session.flush but it didnt worked. my criteria is as below: List lst = session.createCriteria(Entity.class).list(); when i navigate back ,even though changes in the DB , it does not reflect in the result set. Please let me know what i should go for. Thanks in advance. --Sidh ...

67. Hibernate cache refresh problem    forum.hibernate.org

Dear all, I have a problem when using hibernate to connect to mysql. My application can retrieve data correctly if all changes are made thru' hibernate api inside my application. However, it cannot refresh data correctly if someone changed the DB data manually or using third party tools. Worstly, there is no way to refresh the hibernate cache unless I have ...

68. Refreshing cache after db changes not done by hibernate    forum.hibernate.org

Records of one of my database server is being modified by two way: 1) using an application where hibernate is used 2) using another server which also changes the same database using somehow. My problem is that: changes done by another server is not reflects instantly in my application. My hibernate cache is not refreshed instantly. What is the solution for ...

69. Refreshing database    forum.hibernate.org

Enviroment: Jboss seam 2.0.2 GA When I'm doing query's with a conversation scoped entitymanager, if other application changes the database, my entityManager doesn't notices this changes until I create a new conversation. I thought that doing a flush I could get the changes, but it doesn't work. Is there any instruction for doing this syncronizing?? This is my persistence unit: Code: ...

70. Problems with refresh after an insert    forum.hibernate.org

Newbie Joined: Fri Feb 13, 2009 5:43 pm Posts: 4 Hibernate version: 3.2.3GA Oracle: 10.2: I have a parent-child-grandchild relp similar to the following: Code: public class Parent { Set children ; ... @OneToMany(mappedBy="parent") @JoinColumn(name="PARENT_ID") @Cascade( {CascadeType.SAVE_UPDATE, CascadeType.REFRESH}) public ...

71. Externally updated column value not getting refreshed    forum.hibernate.org

I have a use case where a column (not key) value may get updated by another application and i want hibernate to see the change. Unfortunately every time i execute the query i always get the old column value. I'm opening and closing a session every time so it can't be the session cache. I've turned off query and second level ...

72. em.refresh() after catching an exception throws exception    forum.hibernate.org

Hi experts, I am using Hibernate JPA provider. I am using an interceptor to implement optimistic locking. In OnflishDirty() method after performing some validations, I am throwing optimisticLockException. Then I catch the exception and do following > Object entity = em.find(id) > em.refresh(entity) While executing the last line it throws org.hibernate.HibernateException Exception message : this instance does not yet exist as ...

73. Hibernate cache refresh on demand    forum.hibernate.org

How can I achieve Hibernate cache refresh on demand. My hibernate cache is on a ZipCode table. An external (out of application) process updates this table via some query. How can I refresh the related cache in the application so that it gets the updated data? Please direct me towards getting an answer for it. Thanks NG

74. Refresh doesnt reflect changes of other users    forum.hibernate.org

We have an 2 tier application with Swing and Hibernate (3.3.2.GA) on the client side and MySql on the servers side. The application shows all objects (class network) in a tree component. To work with an network object the user selects the tree node. To reflect changes by other useres we use "getSession().refresh(obj);" when the object was selected in the GUI. ...