id « Data Type « JPA Q&A

1. Getting @Id's DataType from JPA stackoverflow.com

I'm writing a library that will be used to Hibernate many types of EJBs via JPA. When loading an EJB from JPA, the library needs the datatype of the field(s) ...

2. Using enum as id stackoverflow.com

Using JPA, can we define an enum as id of an entity? I've tried the following:

public enum AssetType {
   ....
}

@Entity
@IdClass(AssetType.class)
public class Adkeys {

   private AssetType type;

   ...

3. How to send send an array of objects to a NamedQuery that needs the "id" of all the objects. stackoverflow.com

I am building a report from information received from a muti-select form element in a jsp page. In my repository class I am getting an array of objects from that element. I ...

4. Hibernate id null issue coderanch.com

Hi all, I seem to have a problem with setting the id of a bean when the bean is being saved for the first time. The id type="long" and the unsaved-value="null". Sometimes, when an object is being created and tried to be persisted I am getting an error that the id value is null and the object cannot be persisted. This ...

5. Hibernate 3 AssertionFailure null id in entry coderanch.com

Hi, We some issues in usage of hibernate 3. I always have an issue with the below error. Could some one help me in understanding the root cause. We are opening the session as follows: s = sessionFactory.openSession(); Loading as follows: hbnSession.load(objDbObject, new Integer (objectId)) ; Thanks in advance. ERROR org.hibernate.AssertionFailure - an assertion failure occured (this may indicate a bug ...

6. Hibernate Annotation Example id null issue coderanch.com

Hi, I am using annotation tags within hibernate example 'CreateData.java'class to do simple insert into oracle 10g database table 'student2'. IP am getting error like log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version). log4j:WARN Please initialize the log4j system properly. Hibernate: insert into student2 (scourse, sname, sroll) values (?, ?, ?) Exception in thread "main" org.hibernate.exception.ConstraintViolationException: could not insert: [ri.Student2] ...

7. IllegalStateException:No data type for node: org.hibernate.hql.ast.tree.IdentNode IdentNode:'Id' coderanch.com

8. how to copy an object with a new id forum.hibernate.org

Hi! I have found a few answers to this, but I kindof did not get it: I need to make a copy of an entity, change a few values and then save that object with a new id (resulting in an insert rather than an update). Maybe my problem is that the id is a long (and generated in the database) ...

9. AssertionFailure: null id in entry forum.hibernate.org

Dear Community, I'm a hibernate user for a while and I have never experienced this one... In a new project, under a certain load I'm having troubles having my project running smoothly. I'm often getting the following exception: org.hibernate.AssertionFailure: null id in entry (don't flush the Session after an exception occurs) I have read plenty of articles ...

10. AssertionFailure: null id in entry forum.hibernate.org

11. AssertionFailure: null id in entry forum.hibernate.org

12. About adding entities with null id in Sets forum.hibernate.org

See http://www.hibernate.org/109.html. I understand that you're using id for equals(). Then if you put multiple new objects into a set only one of them will be found in the set (because java uses equals() to distinguish between elements in the set). Instead, use some other properties for equals(). Preferably ones that won't change, e.g. the timestamp when the object was created ...

13. SQL Server 2000 native id : Cannot insert the value NULL forum.hibernate.org

I'm using Hibernate 2.1.2 with SQL Server 2000 Usually my code is running well in my machine, but when I tested to different SQL Server 2000 Agent, it throwed these exceptions : Caused by: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]Cannot insert the value NULL into column 'ID', table 'ATC.dbo.CLIENTS'; column does not allow nulls. INSERT fails. at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source) at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown ...

14. Hibernate trying to insert row with NULL id forum.hibernate.org

Author Message tedberg Post subject: Hibernate trying to insert row with NULL id Posted: Fri Jul 16, 2004 7:45 pm Regular Joined: Wed Jun 30, 2004 4:02 pm Posts: 64 I normally try to isolate a small block of code causing the problem, rather than have people read a pile of code pasted in, but the guidelines request a ...

15. UserType, and HQL forum.hibernate.org

Hibernate version: 2.1.6 Mapping documents: ---- public class UString implements Serializable { private final String value; public UString (String value) { this.value = (value!=null ? value.toUpperCase() : null); } public String toString() { return value; } public boolean equals(Object o) { return ((UString)o).toString().equals(value); } public int hashCode() { ...

16. Is string a valid type for id? forum.hibernate.org

17. Null Pointer Exc when trying to getSession().get(class, Id) forum.hibernate.org

Hi, I would appreciate any advice regarding the following issue. We are using Webworks +Hibernate (2.1.4) with MySQL (4.1) I am getting a NULL POINTER Exception while trying to do getSession(classname, id). Thanks, MK ============================================== Here are my Database Schema to save this search criterias: ============================================== SavedSearchMaster ----------------- SS_Id Int NOT NULL AUTO_INCREMENT, PRIMARY KEY SavedSearch_Name Varchar(60) User_Id Int Foreign Key ...

18. null id in entry forum.hibernate.org

Read the rules before posting! http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: 2.1.6 Mapping documents:

19. Best way to get large number of objects by Id forum.hibernate.org

20. How to make a null if id is zero forum.hibernate.org

Hi, I have a many-to-one mapping: Currently, if an entry has value 0 in column abc_id, as I have no Abc object whose id is 0, I get a UnresolvableObjectException: No row with the given identifier exists: 0. What I would like is for my object's property's value to be null when the abc_id is 0. Is ...

21. Column 'NEXT_MESSAGE_ID' in table 'MESSAGES' cannot be NULL forum.hibernate.org

Hi all, I'm a newbie in Hibernate and trying to run the example in the "Hibernate In Action" book. Please give as detailed help as possible. Hibernate Version 2.1.6 Mapping Documents Code:

22. IdentifierGenerationException when I use UserType in ID tag forum.hibernate.org

Hi... - My database is MySQL e all the PK are 'autoincrement' - I'm using the follow ID TAG: - The IdToLongConverter is a org.hibernate.usertype.UserType class - When I put 'null' in a id value, occours this error: org.hibernate.id.IdentifierGenerationException: this id generator generates long, integer, short or string - I looked at the ...

23. cannot insert NULL into ID forum.hibernate.org

24. Jumping to a page based on ID not page number. forum.hibernate.org

I need to be able to jump to a page not based on page number but ID. For example, say I am displaying a list of 200000 cars sorted by year manufactured and I want to jump to the page which has the car with the number plate "123456". Does anyone have any ideas on how to implement this? Thanks

25. id=null forum.hibernate.org

26. mismatched id number forum.hibernate.org

Hi all, We are using a Hibernate 2.1 with Derby DB and one of our customers experience a strange problem. They save items, and we provide a feature to print an item id. This is a part of Item.hbm file for item id. To ptint an item id, we ...

27. unidirectional one-to-one can have null id? forum.hibernate.org

Hi, I have a one-to-one relationship using a unidirectional many-to-one w/FK constraint mapping and I was wondering if I can allow null values for the FK. For example, I have a one-to-one relationship between Customer and Account (where Customer knows Account but not vice-versa). Sometimes the business rule allows a Customer to exist without an Account (for accounts pending) so I ...

28. Timestamp column as hibernate.id property forum.hibernate.org

29. Inserts null parent_id, then updates it. forum.hibernate.org

...

30. The id is null forum.hibernate.org

mateamargo wrote: The problem is that when I get an instance of User, the id property remains in null, the name and lastName properties are getted correctly. The userId filed in the database is a PK Autonumeric, so is never null. Is this behavior ok, or maybe the id element in the mapping is wrong? What do you mean by "when ...

31. problem with type string ID forum.hibernate.org

32. null id forum.hibernate.org

Hibernate version: 3.2 Name and version of the database you are using: HSQLDB 1.8.0.7 External Libraries: GWT, Hibernate4GWT, HiberGeneration I have a table Utenti automatically generated by HiberGeneration ( http://objectgeneration.com/eclipse/ ). Utenti.hmb.xml Code: ...

33. /equals() issue forum.hibernate.org

Newbie Joined: Tue Oct 30, 2007 11:16 am Posts: 1 Heya, I am fairly new to using Hibernate, so I'm not sure if this is a piloting error or if I'm trying to combine things the wrong way. I have a struts 2-spring-hibernate application. I have overidden equals() and hashCode() to use my natural keys, and also used the tag ...

34. Implementing equals for with forum.hibernate.org

I think I've read just about every frickin article about equals/hashcode and natural-id. (Fun .... argh). I'm stuck trying to decide how to implement equals for natural-ids that have a many-to-one in it (i.e. the "parent" entity is part of equality). The problem as I see it is there's no way to include the check for the many-to-one part in the ...

35. hibernate hydrated objects' properties are null except id forum.hibernate.org

Hello, hibernate-3.2.5 hibernate-annotations-3.3.0 hibernate-commons-annotations-3.3.0 mysql 5.0 tomcat 6.0.14 I have the following model classes, only relevant portions mentioned: Code: @Entity @Table (name="insertion") public class Insertion extends BaseObject implements AuditableModel { ... @ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE}, fetch=FetchType.EAGER, optional=false) @JoinColumn ( name="unit_id", nullable=false) public Unit getUnit() { return unit; ...

36. Hibernate 3 AssertionFailure null id in entry forum.hibernate.org

Hibernate version:3.2 Name and version of the database you are using:Mysql 4 Hi, I got a Table I want to insert data into. It's primary key is an auto increment id. Aditionally, it has a unique key, that is based on to columns. When I try to insert a row that contains data that would violate the unique key constraint, I ...

37. Problem using String for Id forum.hibernate.org

Author Message rvaneperen Post subject: Problem using String for Id Posted: Tue Oct 21, 2008 12:18 am Newbie Joined: Thu Dec 28, 2006 11:14 pm Posts: 5 Location: Salt Lake City, UT I am trying to implement JPA/Hibernate with an existing PostgreSQL database where the Id columns are of type String. I am getting an error that seems to ...

38. Attempted to assign id from null one-to-one property forum.hibernate.org

Newbie Joined: Thu Feb 19, 2009 8:06 am Posts: 5 Hi all, I'm quite new to spring & hibernate and I get this error I've already said in the title of this post when trying to persist an object. Here are the mappings of the objects. Thank you all. If you need something else, just ask for it and I will ...

39. null value in column "id_user" violates not-null c forum.hibernate.org

Beginner Joined: Mon May 26, 2008 3:34 am Posts: 31 Hello everyone, I have a problem while trying to insert an user to my db. Here is my User.java: Code: ... private int id = 0; private String login = null; private String password = null; private Date creationDate = new Date(); private int idActivationState = 0; private Profile profile = ...

40. asking Hibernate to handle 0 and null id as "unsaved&qu forum.hibernate.org

what does the generated hibernate mapping file look like? does it have any unsaved value specified in it?? have you tried some how through annotations to set the unsaved value to 0 and see if that helps.. Also initialize the id to zero by default and see if that helps at least from your client side.. @Id ...

41. Timestamp corrupting id values forum.hibernate.org

Newbie Joined: Tue May 23, 2006 9:05 am Posts: 5 Hello, I have hit upon a really peculiar problem. I have a field where I want to store the last changed time, so I map it as type - timestamp. When I do that, while saving, it corrupts the other property values. If I change the type to - date, then ...

42. EntityNotFoundException - with id null forum.hibernate.org

Hi, I'm using Hibernate with Envers 1.2.1 and Seam 2.2.0GA to version certain entities of my system. When I try to load all versions of an entity I get an EntityNotFoundException while fetching a ManyToOne relation where the FK is null. I've already tried to add the @NotFound annotation with no help. Does anybody know a solution to my problem? Entity ...