strategy « Fetch « JPA Q&A





1. Hibernate fetching strategy - when to use "join" and when to use "select"?    stackoverflow.com

Most Hibernate associations support "fetch" parameter:

fetch="join|select"
with "select" being default value. How to decide which one to use for which association? I tried changing all from "select" to "join" application wide - number ...

2. Flex-Cairngorm/Hibernate - Is EAGER fetching strategy pointless?    stackoverflow.com

I will try to be as concise as possible. I'm using Flex/Hibernate technologies for my app. I also use Cairngorm micro-architecture for Flex. Because i'm beginner, i have probably misunderstand something ...

3. Lazy Fetch strategy vs Eager Fetch strategy in hibernate?    stackoverflow.com

I went through the Hibernate Tutorial at http://docs.jboss.org/hibernate/core/3.3/reference/en/html/performance.html and got the question which fetch strategy among select or Join is better and we should go for. I know ...

4. Hibernate lazy fetching strategy    coderanch.com

Hi there, I'm building a Swing application that gets objects from a database using Hibernate. The user gets a list of all Items in the db. If he chooses an Item he sees a list of all the Bids that are connected to this Item (one-to-many). The Bids are lazy-fetched since there are a lot of Items and the user only ...

5. help needed hibernate fetching strategy    coderanch.com

I am working on hibernate fetching strategies but unable to get the difference. I do not know where I am doing a mistake. I am using MySQL5.0 as DB. I have an Author class and a Books class. The relationship is One to many. I query the books and retrieve the author one by one but I am not able to ...

6. hibernate fetch strategy using one table per class hierarchy    forum.hibernate.org

Hello I am using the one table per class hierarchy inheritance mapping to legacy data as described here http://docs.jboss.org/hibernate/core/3.3/reference/en/html/inheritance.html#inheritance-tableperclass here is what my mapping roughly looks like Code: ...

7. Query by example fetching strategy    forum.hibernate.org

Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp I'm using the Criteria Query by Example to retrieve a list of parent objects that satisfy search criteria on both parent properties and child properties. This is actually working using the code below. However the actual query is bringing back both the parents (headers) and children (samples) - which is more ...

8. Fetch strategy seemingly ignored    forum.hibernate.org

I'm tearing my hair out at the following problem. I have a database of products. each product links to an imageSet object which I DO NOT want to be loaded unless I explicitly call getImages(). Hibernate3 claims to use lazy (proxy) fetching by default for associations, and I have even set lazy="true" for both the child class and the association but ...

9. change fetching strategy to lazy!?    forum.hibernate.org





10. choose fetching strategy in query    forum.hibernate.org

11. Fetch Strategy Question For CaveatEmptor    forum.hibernate.org

I am trying to learn hibernate and are building a webinterface for the CaveatEmptor. In order to learn selecting a fetching strategy I want to build the following webpage: When the enduser has selected a root category I want to return a RootCategoryDetail page that shows all the (childCategories with their 10 newest items). But what is the most efficient way ...

12. Fetch join strategy    forum.hibernate.org

Hi, I'm trying to define the fetch strategy for lazy associations using JPA/Hibernate 3.2.6. It seems the @Fetch annotation is only valid for eager associations. Well, at least, I couldn't make it work otherwise. Please, prove me wrong. :-) The main reason I'm trying this is because: (1) I don't want a model-driven way to define which association is lazy and ...

13. Hibernate fetching strategy in same table based on column?    forum.hibernate.org

Hello every one, I'm new to Hibernate and learning new things every week so hang on there :) I need help about implementing a same table fetch (like a loop) for child or parent columns in the same table without going into dead loop. what I mean is this: I have a database Table called: FamilyTree Code: ...

14. Using Fetching strategy in one-to-many ?    forum.hibernate.org

Hii all, i try to used fetching strategy in one to many relationship in hibernate, but i little confusing with it. This my code : Code: public List getAll() { session = factory.getCurrentSession(); transaction = session.beginTransaction(); ...