dynamic « Map « JPA Q&A

1. (N)Hibernate - is it possible to dynamically map multiple tables to the one class stackoverflow.com

I have the situation where i use GIS software which stores the information about GIS objects into separate database table for each type/class of GIS object (road, river, building, sea, ...) ...

2. How to map dynamically created table in Hibernate? stackoverflow.com

I am working on a web application. We are using Hibernate as ORM in our project. Actually, our application creates some tables dynamically based on user selection. The user can select ...

3. Dynamic mapping in hibernate? stackoverflow.com

Actually I am looking for something like this: You alter the table in db (e.g. add a column); it should be reflected in the front end wihtout hardcoding the mapping file... Thanks for ...

4. Dynamic hibernate mapping file stackoverflow.com

Here is an example of my mapping file:

<!-- ============================ -->
<!-- Table TABLE1 -->
<!-- ============================ -->
<class table="TABLE1"
    name="com.myCompany.Entity1" lazy="false" schema="SCHEMA1">
    <!-- Attributs -->
    ...

5. Creating tables dynamically in Hibernate environment stackoverflow.com

There's an enterprise application using Java + Hibernate + PostgreSQL. Hibernate is configured via annotations in the Java source code. So far the database schema is fixed, but I faced the ...

6. hibernate generation for dynamic map stackoverflow.com

I am trying to generate hbm.xml files to support the dynamic map mode of Hibernate. When I run hbm2hbmxml my classes are generated with the name attribute instead of the entity-name ...

7. how to create mapping file dynamically in hibernate? stackoverflow.com

I have situation where table is created dynamically,i don't know the table name it comes dynamically so i want to know that how can i am able to create mapping file(.cfg.xml) ...

8. Hibernate: Dynamic Table Mapping coderanch.com

Where does your #145 or blah.... values are coming... are these also dynamically generated or user defined? When a user registers with the application they are assigned an ID number. The ID number is generated by the application. When a user registers, a set of tables will be created in the database (for expense records, transactions, sales data, etc.) Thanks for ...

9. How to map dynamically created table in Hibernate forum.hibernate.org

Hi, I am new to Hibernate. This is my first post in this forum. I am using Hibernate in my application which is using MySQL as its database. I am creating tables dynamically based on the user selection and data availability. Usually, in Hibernate we create a configuration file seperately for each table. So, If we have an additional table in ...

10. Dynamic Map Feature Roadmap forum.hibernate.org

I would like to use the hibernate dynamic map feature in one of my projects. The documentation mentions that this is an experimental feature. I have been using hibernate for sometime now and haven't seen the status of this change. Could someone throw some light on the roadmap and plans for this feature to be adopted fully and taken out of ...

11. Dynamic hibernate mapping file forum.hibernate.org

I want to change the schema name in my mapping file depending on the deployement environnement. The schema name is not the same for all the classes in the mapping file. Unfortunately, we dont use maven to deploy in different environnements. Is there any way to that with hibernate. For example: ...

12. Status of the dynamic-map feature forum.hibernate.org

I would like to put a good word in for the dynamic-map entity mode. From the amount of content available on the web discussing this feature it seems to me that few people use it -- and it's still experimental. Dynamic maps have a very important role when using Hibernate from dynamic JVM languages. I work for a company that uses ...

13. Problem with Mapping Classes in a DYNAMIC WEB PROJECT forum.hibernate.org

14. how to add hibernate mapping file dynamically forum.hibernate.org

Hi ! I am working on a project in which I have to create database table at run time. how can I map hbm files at run time. I tried with below given code, but with following code I have to restart the tomcat each time I created a new table in database. Please somebody guide me that how can I ...

15. Dynamically map a table forum.hibernate.org

16. Dynamic Mapping: Is it possible with Hibernate forum.hibernate.org

Hi, I don't know very well Hibernate, but I know EJB and other projects like Castor and JDO. I'm searching a java free layer where I can dynamically create persisted objects. Not easy to esplain for me .... but ... Imagine that you to can add fields, of some basic types (String, Number, Date,..) at run time creating your dataobjects. The ...

17. Dynamic mapping table to persistent class forum.hibernate.org

Hello, Hibernate team: I am a newer to hibernate. My web project needs an O/R mapping tools. The project needs provide dynamic information to web user: 1). Web user sends its descriptions (Range from web user, may be one description or more) about their items to us. 2). So, we have to define tables for every customer to save it. We ...

18. One Class - Many dynamic Tables. How can I map it? forum.hibernate.org

For a GIS-Mapping application, Id like to generate an Hibernate mapping. in run time . The reason is that one class (Layer) may have many different attributes (LayerAttribute). For example: a Layer River has Name, m3, length, lineGeometry. They are saved in River's table. a Layer Country has Name, m2, countryCode, polygonGeometry. They are saved in Contry's table. The easy solution ...

19. dynamic add mappings using MBean forum.hibernate.org

Hi, my situation is like described in http://forum.hibernate.org/viewtopic.php?t=929268&highlight=. I had one hibernate application, respectively a framework using hibernate, running at jboss. Now i want to add a mapping at runtime to the applications SessionFactory from another independent jar. Therefor i use the MBean (HibernateFactory) and it works first of all. Now following problems: 1. After: -deploy the 2nd jar -add a ...

20. Sharing and dynamically changing the mapping config forum.hibernate.org

Hi, The goal is ti share the same mapping file between two applicatons where one application requires read-only access, and the other application requires the r/w access. The application that requires read-only access would like to set few changes to the mapping file during initialization, specifically, the use of the hibernate read-only cache ( )and mutable="false" property. I understand this ...

21. How to map to a dynamic table name? forum.hibernate.org

Can I map the same class to a different table at runtime? For example, can I map class Review to both REVIEW and REVIEW_2002 which have the same table structure depends on some condition? We have an application which handles employee's annual review data. It has 3 year worth of data, and I am in the process of devising an archiving ...

22. Question about dynamic mapping forum.hibernate.org

I am working on the same issue, I am trying to find out if hibernate can be customized to persist a dynamic object model into regular database tables, while not breaking any of the hibernate framework. I mean I still want to be able to use transactions, record locking, query language, etc. Although this should not be really hard to customize ...

23. Dynamic class using imports mapping runs into a invalid code forum.hibernate.org

Hi Everybody, After roughly a week and half of painful debugging, I figured out the problem with hibernate generating only a "PARTIAL QUERY" for the below mentioned code. (Right at the end of this post) The query generated was: "SELECT FROM" The query I was expecting: select catpersist0_.CAT_ID as CAT_ID, catpersist0_.NAME as NAME0_, catpersist0_.sex as sex0_, catpersist0_.weight as weight0_ from Cat ...

24. How to dynamic mapping tablename? forum.hibernate.org

25. Dynamically Adding Hibernate Mapping Files forum.hibernate.org

Newbie Joined: Thu Feb 17, 2005 7:32 pm Posts: 3 I have the following bit of code: Code: package models.dao; import general.Functions; import net.sf.hibernate.HibernateException; import net.sf.hibernate.Session; import net.sf.hibernate.cfg.Configuration; import java.io.File; /** * This class has been automatically generated by Hibernate Synchronizer. * For more information or documentation, visit The Hibernate Synchronizer page * at http://www.binamics.com/hibernatesync or contact Joe Hudson at joe@binamics.com. ...

26. dynamic mapping forum.hibernate.org

Hi I have a situation where the system administrator can add extra columns to a table whenever necessary. A set of meta data tables are used to define what the columns represent. For example the administrator may define an extra column for the client table called firstContact. He would then add information to the meta data tables stating that the firstContact ...

27. Dynamically reload a mapping forum.hibernate.org

Is there a way to dynamically reload a named sql query that is defined in a hibernate mapping file? I have tried closing and clearing out the session factory and creating a new one based on the new mapping files, but it still seems to store the named query in the cache somewhere. The debug statements seem to indicate that it ...

28. Creating mappings dynamically in code forum.hibernate.org

29. Dynamic entities as Maps: howto forum.hibernate.org

- as it is presented in section 5.4 of the manual it looks like all Hibernate functionalities are perfectly available, only the representation is changed; is this conclusion correct? - if dynamic mapping is required because the DB entities may change at runtime, how can this be achieved? Well, yes, I know that Configuration.add() can add new entities to the curent ...

30. Dynamic Maps forum.hibernate.org

Hello We're using dynamic maps. But it has at least 2 drawbacks: - you have to use java.util.HashMap (it's hardcoded in DynamicMapInstantiator) We need our custom Maps - the for the entity-name is hardcoded to "type" (but "type" is an usual column name in our db scheme) I made a thin patch (Environment, SettingsFactory, Settings, DynamicMapInstantiator): - new property: "hibernate.map.class" for ...

31. Dynamic XML mapping forum.hibernate.org

Hi everybody, I would very much like to learn more about Hibernate Dynamic xml mapping functionality. I have read the chapter 19 of the users' guide and the web page http://www.hibernate.org/171.html but these documents do not clearly demonstrate how I can achieve this functionality. I would very much like to see a simple complete example, specially how one can save a ...

32. anybody plz help, dynamic xml mapping and sql forum.hibernate.org

33. Hibernate & Dynamic Mapping forum.hibernate.org

Hi, I am trying to find some information about how Hibernate works with dynamic mapping/modelling. The little info I have found suggests that this was planned for version 2.2 but I cannot find anything more substantial on this feature or 2.2 Could someone please point me in the right direction for this? Thanks in advance. --muser

34. dynamic mapping of table columns to different objects forum.hibernate.org

Hi My requirement is like this: I have a table A. Depending on value of A.col1 I want to map other columns of this table to other objects. For example, If col1 has value 2, I want to have primary key of another table B(object B) into my A.col2 i.e. I want the object B to be part of Object A ...

35. Adding mapping resource dynamically in Config object forum.hibernate.org

36. Dynamic insertion on join table mappings forum.hibernate.org

Is there a way to insert a row in join tables only if all the properties in the table is not-null. I'm already using optional="true" in the join for the tables but Hibernate seems to be inserting even when a property for the join is null. Mapping file -------------- seq_user_id_seq

37. Dynamically add mappings forum.hibernate.org

38. Adding mappings dynamically forum.hibernate.org

39. Dynamic mapping and Index forum.hibernate.org

40. Dynamic mapping forum.hibernate.org

41. Dynamic mapping forum.hibernate.org

42. Dynamic Class & Mapping Files forum.hibernate.org

[b]Hibernate version:[/b] 3.1 I would like to know if there is any hibernate feature or pattern available for dynamic class generation and mapping files for an existing database schema? which will one time task for my project in the sense....any client can configure their database with this..... it would be like after i have released my product....depending on the client's configuration ...

43. Dynamic column mapping forum.hibernate.org

Hibernate version: 3.0.2 Is there anyway to dynamically map the column names of a table into attributes of the pojo/hbm in hibernate at runtime? Let me elaborate the problem. We have a db table where new columns to be added frequently. How to handle it in hibernate without changing the code? Ie; how hibernate knows a new column has been added ...

44. Dynamic-map entity mode - StackOverflow forum.hibernate.org

Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp I try to use Hibernate in dynamic-map entity mode, with bidirectional one-to-many relationship. But when I would like to save the parent object, the hibernate throws StackOverflowError exception. But when I debug the hibernate source I found that getSanpshot method in the PersistentSet class try to clone the Set into a ...

45. How to add mappings/classes dynamically forum.hibernate.org

Good evening, I'm looking to design an extensible object model on top of hibernate, by this I mean the following: I have an existing object model mapped with hibernate and POJOs. I wish to have a number of "empty" colums in the database of various types, and each object in the domain model has a one-to-one to a loosly defined pojo ...

46. Dynamic collection mapping forum.hibernate.org

Hello, I was searching for this solution but never found anything close to the answer. I'd like to use hibernate in case, where there is a class PObject but there is just array of variables, which would need to be stored int the database. Let say: class PObject { String className; String tableName; Map variables = new HashMap(); public class PObject() ...

47. Reading values dynamically from mapping file forum.hibernate.org

How can I read dynamic values from a mapping file? Purpose: I need to read the locale from the system. The mapping file contains mapping for two tables one which has the description and id and the other table has the languages associated with that id. For eg, if an id has French language associated with it then the French user ...

48. Dynamic mapping? forum.hibernate.org

Hi, I am new to Hibernate. We have an application which creates tables dynamically and populates tuples if required. Hence it will not be possible to do OR mapping through the static xml file. Is there a way I can use Hibernate such that we can do the OR mapping dynamically. Thanks, Abhinav

49. Problems with map in dynamic Map-entity forum.hibernate.org

Hello all, I use Hibernate version: 3.2.5.ga with dynamic maps for usage of java.lang.Map as entity-class and would like to access some legacy tables. My xml-mapping looks like this: Code: TEST_SEQ ...

50. Dynamic table mapping forum.hibernate.org

Hey ppl, have anybody faced a problem like this: I have a data structure where i have a new table each day. So my data is spreading in many structurally identical tables. How can i map or make my query in this kind of data structure using hibernate ? thanks in advance for any information

51. dynamic mapping of column to field forum.hibernate.org

52. problems with entity-mode="dynamic-map" forum.hibernate.org

Author Message lfischer Post subject: problems with entity-mode="dynamic-map" Posted: Wed Jun 18, 2008 7:54 am Newbie Joined: Wed Jun 18, 2008 6:37 am Posts: 2 Hello, I would like to use hibernate as persistence-framework to access a database with special requirements: - The database has many similar tables with the same structure: one "parent"-table and a "subentity"-table. The subentity ...

53. Mapping Oracle DataGuard for dynamic db switch forum.hibernate.org

Hi, Thank you all for an excellent product. We are using Oracle 10g database with Hibernate 3.1.3, running on Tomcat. We want to implement the Oracle DataGuard feature, in order to enable runtime switch between two databases. What is the best strategy for doing this? In the Oracle documentation there is one available example, in this example they configure an OracleDataSource ...

54. dynamically modify XML mapping file? forum.hibernate.org

Hello all, I was wondering whether it would be possible to modify from code the properties in the XML mapping files. I have this mapping file: I would ...

55. Multiple Many-to-one using Dynamic Maps forum.hibernate.org

Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version: 3.2.6 Mapping documents:

56. Dynamic table mapping forum.hibernate.org

import java.util.Iterator; import org.hibernate.Session; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; public class HibernateTest { /** * @param args */ public static void main(String[] args) throws Exception { // TODO Auto-generated method stub Configuration config=new Configuration(); ...

57. Dynamically changing table entity is mapped to forum.hibernate.org

58. Dynamic Hibernate Mapping forum.hibernate.org

Hello everyone - This is my first post and was wondering what the best way (or recommendation) for changing mappings dynamically. What I have is a MS Db (or multiples) from a 3rd party and depending on the version of the application, the hibernate mappings need to change. For example: Table 1 tells me the version of the application and when ...