TABLE « Column « JPA Q&A





1. Automatic reserved word escaping for Hibernate tables and columns    stackoverflow.com

I am trying to use one Hibernate mapping for several different databases: H2, Oracle, MySql. Each database has a different list of reserved words. I would like Hibernate to automatically escape the reserved ...

2. Hibernate audit columns in each table without repeating them in each definition?    stackoverflow.com

When using hibernate is it possible to specify that certain columns (including id, audit columns, etc) are present in an abstract base class? This seems like a fairly common practice. Especially ...

3. hibernate: how to create one-column table for set    coderanch.com

Paul, I have a class, RoleList, that has a single data member called roles that is a set of strings (the class definition is in my first message). If I were managing the JDBC manually, I would create a table named ROLES that has a single column where every row contains a single string which is the name of one of ...

4. Hibernate relationl table with aditional column    coderanch.com

Dear experts, I am facing problem in composite-element mapping of hibernate. My expected relation is many to many in document and task. That is a task may have multiple documents and a document may have assigned to multiple task. Relational table will contain both foregin key with additional column. In attachment I have given the tables structures. My Task hbm file: ...

5. invalid user.table.column, table.column specification    forum.hibernate.org

Author Message stlguy Post subject: invalid user.table.column, table.column specification Posted: Thu Jul 22, 2010 12:35 pm Newbie Joined: Wed Jun 30, 2010 9:03 am Posts: 3 Hi I am trying to retrieve all instances of an entity called Referral. I am using Spring to create instances of my EJB 3 interface class called ReferralSessionLocal. I use Hibernate 3.3, hibernate-jpa-2.0-final.jar ...

6. Hibernate tables columns information    forum.hibernate.org

9. Different column prefixes per table?    forum.hibernate.org

Is it possible to have a different column prefix auto assigned per table. e.g. BusinessUnit class -> BUSINESS_UNIT table. prefix of BU_ for columns MasterProduct class -> MASTER_PRODUCT table. prefix of MPRD_ for columns I'm using the hibernate tools with an "annotationconfiguration" and hbm2ddl to generate the schema. Is there some way of annotating the classes so that they are given ...





10. Use Hibernate for Create, Drop, or Alter tables/columns?    forum.hibernate.org

Since doing so would mean the mapping xml would have to change to match the new structure and classes would need new properties and getters/setters, I'm guessing it is not supported. I have not found any specific information about this, but it appears Hibernate is built for running queries against a DB not changing the structure of the DB. Is that ...

11. How to union two tables with different columns    forum.hibernate.org

Hi, I have two tables defined as (i)Table1 having columns: id, date_received, message (ii) Table2 having columns: id, date_sent, message, status I would like to join the these two tables(no relationship) as follows: select id, date_received as date, message from Table1 union all select id, date_sent as date, message from Table2 I have checked on the Hibernate online reference manual on ...

12. how to check if tables and columns exist    forum.hibernate.org

13. Adding a NotNull Column to existing Table - best Practice    forum.hibernate.org

Hi, we have a project we creating an update for at the moment. We have several database enhancements for our project. Some columns that are added to the existing (and already filled) database should be @NotNull. Is there a hibernate sollution to aquirre this? The Update itself works pretty well. The problem of couse is, that the columns are added to ...

15. nulled out column with table-per-concrete-class with union    forum.hibernate.org

Hi all, I've reported the following bug to the hsqldb community. According to the answer they gave me I should understand that the problem is at hibernate side, because the sql generated by the hsql dialect isn't strictly ansi conformant. The same example worked fine using Postgres as my dbms. What do you think? Should I report an issue about this? ...

16. Adding new column to existibg table    forum.hibernate.org

Hi every one, I am new to hibernate, need help to add new column to the existing table. In my project i am using HSQLDB database. i am using hibernate to deal with the database. now i need to add new column to one of the existing table. can anyone help me how to do this by using hibernate. what changes ...





17. Quering two columns from a table    forum.hibernate.org

Hello, I am new to Hibernate. I am query two String value columns from one table, Like List t = session.list(); But when I loop the list to assign the values to a class members for(String[][] p : t){ String t = p[0][0] String s = p[0][0] } I keep getting a classCastException error message, I was wondering if anyone could ...

18. Table and column naming conventions    forum.hibernate.org

19. How to add additional columns in table?    forum.hibernate.org

Hello guys! I am a newbie to HIbernate, so please forgive me if the question, I'm about to ask, seems a little silly. I have two classes which I would like to associate using "many-to-many" relationship (these classes are: Exercise and UserTraining). While doing so, the HIbernate will generate a "intermediate" table dor the relationship (let's call it: ExercisesSet). The ExercisesSet ...