Questions for hibernate


3319

Using Hibernate with a map for the attributes of a table

So I have some code that represents a songs metadata, instead of having getters and setters for each field I put the values in map, each field is a String, and I have a seperate enum for each field...
1962

Hibernate: Multiple FK relationships

I'm kinda stuck defining a Hibernate Entity:
1415

Hibernate basic configuration in Spring 3 project - Class not found exception

I'm trying to set up Hibernate 3.6 in my existing Spring 3 MVC + Spring 3 security project. Nevertheless I keep getting java.lang.ClassNotFoundException in my HibernateUtil class - line with return...
2044

How can I configure Hibernate with environment variable

So i want to deploy my java app on heroku. Once deployed it sets an environment variable DATABASE_URL. I want to use that as my url for hibernate. I currently have hibernate.cfg.xml and there i set...
443

Performance difference between annotating fields or getter methods in Hibernate / JPA

I was curious if anyone had any hard numbers around the performance difference between annotating Entities using private fields instead of public getter methods. I've heard people say that fields ...
4308

HQL Join - Path expected for join! hibernate

I am new to hibernate and I met a following problem:
5630
4740

Retrieving a list of objects with null in the properties after applying resultTransformer

In a criteria query I am getting a list of results in a right way.
2697

JPA Multiple Embedded fields

Is it possible for a JPA entity class to contain two embedded (@Embedded) fields? An example would be:
9595

Accessing Hibernate Session from EJB using EntityManager

Is it possible to obtain the Hibernate Session object from the EntityManager? I want to access some hibernate specific API...
857

Turning off hibernate logging console output

I'm using hibernate 3 and want to stop it from dumping all the startup messages to the console. I tried commenting out the stdout lines in log4j.properties but no luck. I've pasted my log file below.
9627

WARN (org.hibernate.jdbc.JDBCContext:333) - afterTransactionCompletion() was never called

I am using hibernate as ORM when i checked my logs (catalina.out)
2460

Hibernate and transactions and table locking

If I have code that looks like the following:
5441

Need clarification about mapping objects to database, annotations, and one to many relationships

Need some help understanding if I'm on the right track here and exactly what I need to do. Hope someone can chime in.
3478

Hibernate cannot simultaneously fetch multiple bags

Hibernate throws this exception during SessionFactory creation:
9678

Grails: selecting Children of Parent of Child with given id (subquery) with a Where Query

Using grails 2.1.0 and default H2 database. I've got the following domains:
3866
9865

Hibernate group by time interval

I have a table with a timestamp field of type datetime. I need to aggregate the data between a defined start and end time into x groups representing time intervals of equal length, where x is suppl...
3744

JPA OneToMany and Getting children with a single query

I notice that in hibernate, it queries the child collections of entities an entity at a time. So, for example, I have a Person entity with a OneToMany relationship with PhoneNumber as well as a One...
5122

Workaround for Hibernate relationships and SmartGWT RESTDataSources

I'm lost with the way I have to implement a ManyToMany relationship defined in Hibernate. In the client-side we're using SmartGWT LGPL version with RESTDataSources working fine against some back-end
7420

How to configure “hibernate-mapping” to “field”

I want to specify via standard JPA Persistence.createEntityManagerFactory(String,Map<String,String>) to hibernate to use "hibernate-mapping" to "field" rather than "property".
2604

Hibernate 2.1.6 or 3.x?

We are in the process of revamping our persistence layer from some proprietary orm. Most of our developers are already familiar with hibernate 2 and also its gotchas. So we decided to stay with Hib...
373

Join an image into POJO on the server and then persisting using Hibernate?

in a question(here Placing an image in an object, sending the object over rpc and then using hibernate ), someone told me
1068

Hibernate get old / new for audit log

I want to log the changes of some entities.
4465

What are First and Second Level caching in Hibernate?

Can anyone explain in simple words what First and Second Level caching in Hibernate are?
5387

Updating clob column in oracle with CLOB value

i want to update a column is CLOB type, the method is below;
9352

How do I get the Hibernate Configuration after the EntityManagerFactory has been built?

My web framework (Play 1.2.5) creates an EJB3Configuration local to a method which it uses to create an EntityManagerFactory (source). I am working on a script and would like to run the
7156

Still no luck with C3P0 pooling in Hibernate using Spring WebFlow

Still no luck with C3P0 pooling in Hibernate using Spring WebFlow if I use the following database.xml file and run my project I check the database and I only see two connects to it but I have it se...
5198

Class not eligible for getting processed by all BeanPostProcessors

I'm having a lot of trouble to set up a configuration of Spring + Spring Data JPA + QueryDSL + JPA 2.0 + Hibernate in Maven. I already solved a lot of problems, but this one is giving me headache =...
1474

Hibernate Index Query Slow

My question is similar to the one posed in this thread:
9399

Hibernate and Oracle native functions

I have an entity that maps to an external oracle table which is one of the primary data sources of my application. This entity is modelled using hibernate.
3022

IUserType to default UTC Timestamp not persisting value

I built an IUserType class to default a UTC creation timestamp on a record. I thought I implemented it correctly, but it persists nothing to the database. Can someone tell me what I am doing wron...
610

Query in Hibernate

I am using hibernate to map the data to my mysql database in a Restful Web Service(using jersey).
6557

What's wrong with creating sequence id hibernate generator?

I want to use sequence id generator,that will work in all databases.So i was seacrhing for an answer and found that blog and according to this next snippet must work:
2048

IJ000453: Unable to get managed connection datasources

17:03:38,942 WARN [org.hibernate.engine.jdbc.internal.JdbcServicesImpl] (MSC service thread 1-2) HHH000342: Could not obtain connection to query metadata : javax.resource.ResourceException: IJ0004...
1007

JPA/Hibernate - shared primary key

I wanted to create bidirectional one to one relationship with shared primary key.
3901

how to ignore fetching a child table in hibernate

i have two tables . health & Network
375

Hibernate configuration file

It seems that I have a problem with my configuration file but I really don't find out what it could be.
1891

Setup/tear down Oracle schema for CI build without fragmenting catalog

I would like to have a CI build (e.g., Hudson) set up and tear down an Oracle 11g schema as part of a nightly build/test cycle for a fairly vanilla JSF/JPA application.
7160

Best practice for working with Foreign key fields

I have 2 tables, Word and State,
3499

How loose coupling DB interaction when using ORM

I am really struggling with understanding how you are loose coupling your app with a DB when you use an ORM. I understand there are code first and data first design patterns and in some scnearios
1071

Enums in NHibernate from Existing Table

I have many tables in my schema design (legacy, cannot be changed) with the pattern:
7934

Reasons to change JPA implementation?

I've heard that some people during their careers have changed the JPA implementation in their projects, but what are the reasons?
2739

JPA/Hibernate in Java SE 6, Best Practices for data access

I am starting a normal Java SE project and i am planning to use JPA/Hibernate. I was wondering if anyone could enlighten me as to what is considered the best way to interact with Hibernate in this
6755

Weird problem with Spring MVC, Bean Validation using @Valid and Hibernate

I have an application uses bean validation in 50 domain classes. It has worked for months without any problems using @Valid in the Spring MVC controllers.
178

How do I maintain consistency of cached ManyToOne collections with READ_WRITE CacheConcurrencyStrategy in Hibernate?

I'm running into a difference between NONSTRICT_READ_WRITE and READ_WRITE CacheConcurrencyStrategy when writing "denormalized" collections... the idea being that I have a join table modeled as an e...
1059

Spring - inner methods called by @Transactional(readOnly = true) method to write

If a method has annotation @Transactional(readOnly = true), is there a way to allow inner methods to write?

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