update « Data Type « JPA Q&A

1. Creation timestamp and last update timestamp with Hibernate and MySQL stackoverflow.com

For a certain Hibernate entity we have a requirement to store its creation time and the last time it was updated. How would you design this?

What data types would you ...

2. Last update timestamp with JPA stackoverflow.com

I'm playing around a bit with JPA(Eclipselink to be specific). The below entity have a timestamp that's supposed to reflect whenever that entity was last updated. What are the strategies for making ...

3. Problem updating BLOB with Hibernate? stackoverflow.com

i am having problem updating a blob with hibernate. (i am using Hibernate 3.3.1-GA) my model have these getters/setters for hibernate, i.e. internally i deal with byte[] so any getter/setter convert the byte[] to ...

4. Auto timestamp update not working in hibernate stackoverflow.com

HI, My POJO class is

@Entity
@Table(name = "seed")
public class SeedUrl {

    @Id
    SeedUrlPrimaryKey primaryKey = new SeedUrlPrimaryKey();

     @Temporal(TemporalType.TIMESTAMP)
    @Column
  ...

5. Hibernate global last update (timestamp?) stackoverflow.com

I am looking for a way to find out when the last data-change was made in/by hibernate. I am looking for this information globally - not for each object/entity/table/column/row. So the question I ...

6. Hibernate Last Updated Date stackoverflow.com

How would I configure my hibernate hbm file to have a last updated date column? I'm trying to add a lastUpdated column to a legacy database structure. My DBA dislikes triggers ...

7. Hibernate get last update timestamp stackoverflow.com

is there any way to get a timestamp of last update/save/delete of an entity (class/table)? One solution that occured to me is setting some temporal property, but it requires change of ...

8. Hibernate not updating a null column coderanch.com

Hi All, I've a DB table which has several columns. Hibernate can't update a DB row when a nullable column is null and through code I try to set it to a legal non-null value. That said, if the nullable column has a legal vale, Hibernate successfully updates its value. I can see the Hibernate generated UPDATE SQL in the log. ...

9. How to update a column to null by using hibernate update statement. coderanch.com

Hi, I am very new to Hibernate, I want to update a column in DB to null using hibernate update query, instead of load all the object and saving it again. My query is:- update Patientadmission pa set pa.to_time=? where pa.admissionid=?, by sending null value directly to to_time column, it is giving error. can you please help me, Faster respose can ...

10. How can I automatically update a last-modified-date? forum.hibernate.org

11. Date is being truncated when using HQL Update Command forum.hibernate.org

The following code works except that when I fetch the data and look at it in the eclipse debugger, I see that the hours, minutes, seconds have been zeroed for my lastUpdatedDate field. When I check the value "recent" the hours, minutes and seconds are definitely non-zero! Can someone tell me how to preserve these values? Thanks, Siegfried Code: ...

12. updating a string which has ' in it. forum.hibernate.org

Hello all, I am trying to update a field(which is a string)in DB using hibernatewhich contails ' in it.(ex: it doesn't appear to be cost effective.). But i am getting errors like: 18:58:12,107 ERROR [PARSER] line 1:261: unexpected token: t 18:58:12,107 ERROR [PARSER] line 2:39: unexpected token: could 18:58:12,107 ERROR [PARSER] line 2:62: unexpected token: right 18:58:12,123 ERROR [PARSER] line 2:103: ...

13. How can I update a certain number of rows using mySql? forum.hibernate.org

Hi all, I have a problem doing the following update: UPDATE Esbinteraction e SET e.owner = :owner WHERE e.label = :label and e.owner = 0 and status = :status limit :count I'm using mySql, but that query doesn't work cause hibernate doesn't know limit token, while, with oracle, i could use the queryString UPDATE Esbinteraction e SET e.owner = :owner WHERE ...

14. Update strategy when some property's value is null forum.hibernate.org

For example: Define an entity class "User": private Long id;//primary key private String name; private String address; I use session.update to update the attached entity sourced from a web form . when the property "address" value is null, I need Hibernate does not update the field into database. So hibernate suppports the strategy? Please help me, thanks!

15. Updating Table1 invokes Updating FK=NULL on Table2 forum.hibernate.org

@Entity @Table(name = "question") public class Question extends ContainsPicture implements Comparable { @Id @GeneratedValue @Column(name = "question_id", updatable = false) private Long id; @OneToMany(fetch = FetchType.LAZY) @JoinColumn(name = "question_id") private Set answers = new HashSet(); [...] } ...

16. Update only if the property value isn't null forum.hibernate.org

Not nicely. This could be implemented using either a UserType or an Interceptor. UserType would be nice because it could be specific to that field. However, you'd have to come up with a way to "know" the current db value since UserType is simply given a PreparedStatement to populate with parameter value(s). But at that point the given column would be ...

17. My property of type Blob isn't updated ! forum.hibernate.org

Hibernate version = 2.0.3 mapping document = Code: ...

18. Update all columns to null forum.hibernate.org

I have this application using Hibernate with mySQL. I had a case where many records, (but not all) from one table had all the columns set to null. mySQL logging shows many of the following... update table version=12 column1=null,column2=null every column nullable was nulled out I have inherited this code and have not seen anything that could directly do this. Is ...

19. i cann't update the blob(image) in mssql,anyone can help me? forum.hibernate.org

Hi ! I don't know if you can help me but I try... There is my problem : I have a form with file upload and text fields. When I modify a text field my database is updated but when I modify a file uploaded Hibernate doesn't update my database. I don't know why... Please help me !! Thanks in advance ...

20. HowTo reduce number of update statements forum.hibernate.org

Hibernate version: 2.1.4 Hi, we are migratiing an J2EE/CMP/CMT application to hibernate. The work is done for about 99%. Using hibernate is a little bit slower but much more reliable. There is just one part that still makes problems. In this part we do the following in ONE session: 1. Delete many objects in different tables with some relations between them. ...

21. Empty string different from null causes timestamp update forum.hibernate.org

...

22. Automatically update timestamp forum.hibernate.org

Hi all, I've got a field for the last changed timestamp (LAST_CHG_TMS) in a lot of the tables i should map with Hibernate and I'm searching for a solution to do this update automatically. I thought of implementing a UserType which does ignore the value given for setValue and set the system date instead but this seems to be the wrong ...

23. Updating a record with null values. forum.hibernate.org

I have a record in the system that can be NULL and has a currently value of 3 (lets say). The value is changed (in the bean) to NULL representing that the value no longer exists. When I call my update function, the field is not updated to the NULL value, but rather keeps the existing value. Is it possible to ...

24. update transient object,is this a bug forum.hibernate.org

by the looks of your column name (MODIFY_DATE) it looks to me the column only store the DAY (not milliseconds)....that would make it only possible to update a row once a day - probably not what you want ;) and is for optimistic locking - not to track which day it was update.

25. Null checking when updating an object forum.hibernate.org

Due to a problem I had (that is not worth explaining for the purpose of this question), I realized that no null checking is done when an object that already exists (persistent) is passed through the saveOrUpdate() function; however this checking is done when it must be saved (it's a new object). Going over the code, there's a helper function named ...

26. Update non null values only? Is there a way.... forum.hibernate.org

27. Hibernate updating null values to NULL in the database forum.hibernate.org

Hi all, I does not know if I was understanting this wrong, but im my opinion when I call the UPDATE method on the Hibernate session, I want the Hibernate to UPDATE all fields that is not null and the fields that are NULL i want to stay with the values that are in the database. Is there any way to ...

28. How to Update only not null columns forum.hibernate.org

Hi, I have a person table & Person Object. I set data for only some columns along with pk, and using saveOrUpdate method. It is updating all columns with null for fileds with null data. I just want to update only columns that I set data in Object. if filed is null in object, I don't want that column to be ...

29. Update date issue with HSQL 1.7.1 forum.hibernate.org

Howdy I am having an issue with the hbm2ddl.auto=update under hsqldb. I know there is an issue with 1.8 and I have reved back to 1.7.1 but still cant get the update to auto create or modify the ddl. It was talked about here: http://forum.hibernate.org/viewtopic.php?t=948369 and I have tried looking it up in jira but have had no success. It appears ...

30. Update with null value with hibernate forum.hibernate.org

31. Handling 'last update by' and 'last update timestamp'? forum.hibernate.org

I've got columns for 'last update by' and 'last update timestamp' in many of my tables. The last update by is *not* the user logged into the database, it is the user logged into the web application. I realize that, through code, I could constantly check values that are being updated in my pojos and set the fields manually when a ...

32. problem with update blob filed in oracle forum.hibernate.org

33. Lazy update (update only the "not null" members) forum.hibernate.org

As I mentioned before, you can be a bit more generic by looking at Configuration and getting a hold of a PersistenClass instance. By doing this, you can find all properties which map to columns that are not null. Here's some example code I posted in another thread: Code: Configuration cfg = HibernateUtil.getConfiguration(); StringBuffer hqlQuery = new StringBuffer(); PersistentClass pc = ...

34. Incorrect update SQL statement for null value forum.hibernate.org

Mapping documents: Code: .... ...

35. Update Db from transient object forum.hibernate.org

Hi I have question about updating DB from transient object.This is my flow: 1. Fetch Object from DB, present SOME of it's fields on web-tier for editing --end of http and hibernte session 2.On post - create transient instance of object, call hibernate update. What happens is that my transient object has null values for properties that i don't want the ...

36. Updating last update time forum.hibernate.org

Hi Guys, I was wondering if there was an easier way to update the last update time column of a table. Here is what I am doing right now: I am first checking to see if the object already exists in the table. If it does not, then I insert the object as usual using save(). If it does exist, I ...

37. Row updated time stamp forum.hibernate.org

I need to record a timestamp against all rows when they are updated in the db. I don't want this value to be on the entity being persisted I want it always to be set to the current time. How can this be done in Hibernate. Can something be specified in the mapping?

38. Problem with BLOB update: Hibernate or MySQL? forum.hibernate.org

Hi, I have an entity with a BLOB field. If I update the blob ( by loading a new file) and other entity properties, like filename and content-type, and then i ask the EntityManager to merge the entity, it updates the changed fileds but it never updates the BLOB field. Is this behaviour depending on Hibernate or MySQL? Or simply I'm ...

39. Updating boolean values with MaxDB forum.hibernate.org

40. Updating boolean values with MaxDB forum.hibernate.org

41. Ignore null values when updating the database forum.hibernate.org

I need to resolve same problem. Did u find any solution for that? Or how can resolve that situation? I need to restrict, only i need, some properties to be updated. So i can't set "updatable=false". One idea it's to set property to null value. When it's update executed, that property is ignored, but how do that?

42. Update only when not null? forum.hibernate.org

Is there anyway I can have a property field only update if the field is != null ? I didn't see anything from the documentation..... Thanks!

43. automatic update of timestamp column forum.hibernate.org

44. Date/Time mismatch occuring when updating via Hibernate forum.hibernate.org

Need help with Hibernate? Read this first: We have an application DB (oracle9i) and a Reporting DB (oracle9i). A standalone projects feeds data from Application DB to the Reporting DB using Hibernate 2.0. Following way it happens....if there is an insert or update operation happening in te application DB a truigger with populate a eventout table and the Java program will ...

45. Clob in not updated when using merge operation forum.hibernate.org

46. Blobs contain empty files after update! forum.hibernate.org

47. Creation and Last Update Dates (MySQL) forum.hibernate.org

48. How to update only what change and is not null ? forum.hibernate.org

So, how I can update only what changes and is not null ? In the case of a not null field, to normal fields the update works fine... For an example, I have one entity... Client: code(key), name, street,number,dateSave(the date that this client is saved in the system...) So the dateSave field is saved only in the SAVE method, and it ...

49. timestamp is not updated in remote node in clustering forum.hibernate.org

Hibernate version: 3.2.4 Hi there, I'm new in hibernate and I have a problem on enabling 2nd level cache and query cache. I'm not sure if this is the correct place to ask for this issue. Basically, I have 2 servers that are using clustering (implemented with OSCache). For example, data A exists on my database table with value 1. Then ...

50. updating timestamp with now(), mysql database and Hibernate forum.hibernate.org

I tried to use public boolean updateLastLog(String email) { boolean action = true; Session session = HibernateUtil.getSession(); try{ session.createSQLQuery("update userProfile set LASTLOG=now() where US_EMAIL = '"+email+"'"); session.flush(); }catch (GenericJDBCException gje) { action = false; log.error(methodNM +gje.getMessage() +" 1catch "+gje.getSQLState()); System.out.println(methodNM +gje.getMessage() +" 1catch "+gje.getSQLState()); }catch (SQLGrammarException e){ action = false; log.error(methodNM +" 2catch "+e.toString()); System.out.println(methodNM +" 2catch "+e.toString()); }finally{ HibernateUtil.closeSession(); } ...

51. Conditional update based on timestamp forum.hibernate.org

I have an object graph, sent from a remote client, that I need to write into a database, but only if the value of the "lastUpdate" attribute is greater than the current "last_update" column value in the database. ie. update doc_tbl set name=?, last_update = ? where id=? and last_update <= ? If last_update fails the compare, it is also an ...

52. How to update existing row in DB for transient objects? forum.hibernate.org

Author Message lutz2008 Post subject: How to update existing row in DB for transient objects? Posted: Thu Oct 30, 2008 9:23 am Newbie Joined: Wed Oct 29, 2008 12:52 pm Posts: 2 Hi, I'm using Hibernate in the database layer of a non-web application. During execution the application creates new/transient objects that are being written to the database at ...

53. Maintaining record "last updated time" forum.hibernate.org

Typically, Hibernate applications need to refresh objects that contain any properties for which the database generates values. Marking properties as gener- ated, however, lets the application delegate this responsibility to Hibernate. Essen- tially, whenever Hibernate issues an SQL INSERT or UPDATE for an entity that has defined generated properties, it immediately does a SELECT afterwards to retrieve the generated values. Use ...

54. Blob not updating; Hibernate3, Oracle forum.hibernate.org

Newbie Joined: Wed Jul 15, 2009 4:31 pm Posts: 1 Hello, We use Hibernate3 and Oracle we are having an issue getting a Blob to update correctly. This means that we have to delete the old blob row, then insert a new row with the "updated blob". Very annoying. Was wondering if anyone else has run into this? Thanks for any ...