Join « Load « JPA Q&A

1. HIbernate FetchMode Join    stackoverflow.com

I have a Parent class with a List of children. I would like to load the Parent by something other than the id e.g. by name...I am using criteria.setFetchMode("children",FetchMode.JOIN); and criteria.add(Restrictions.eq("name", name)) ...

2. Hibernate HQL: using JOIN to eagerly load child entities?    stackoverflow.com

I found this HQL query that I am trying to make sense of. The comment says the LEFT JOIN causes Hibernate to eagerly load the associated entities in the child table, ...

3. Hibernate Many-to-many with eager load problems    stackoverflow.com

My definition of class is like:

@Entity
@Table(name = "items")
public class Item {
    @Id
    @GeneratedValue
    private long id;

    @Column(unique = true, ...

4. Lazy load on Self join entity    forum.hibernate.org

@Entity @Table(name="SearchTag") public class SearchTag implements Serializable, CycleRecoverable{ @Id @GeneratedValue(strategy=GenerationType.IDENTITY) @Column(name="TagId") private long tagId; public long getTagId() { return tagId; } public void setTagId(long tagId) { ...

5. How to use return-join and load-collection    forum.hibernate.org

6.  Examples    forum.hibernate.org

an example of load-collection from the JUnit Test cases is: ............................. SELECT {empcol.*} FROM EMPLOYMENT empcol WHERE EMPLOYER = :id ORDER BY STARTDATE ASC, EMPLOYEE ASC It looks to me like the key column is used not ...

7. Problems lazy load a collection with inner join    forum.hibernate.org

View unanswered posts | View active topics Board index Hibernate & Java Persistence Hibernate Users All times are UTC - 5 hours [ DST ] Problems lazy load a collection with inner join Page 1 of 1 [ 2 posts ] Previous topic | Next topic Author Message tnine Post ...

8. Load entity through join    forum.hibernate.org

9. Load entity through join    forum.hibernate.org

10. Global loading - join not lazy    forum.hibernate.org

Hello everyboy. I have a question on optimized loading on Hinernate 3.2.1 . I make the following mapping [see (1)] and try to load a graph in only one select. So i create all my beans [see (2)] and in an other session try to get only Demande [see (3)]. In fact, i don't obtain one select but two [see (3)]. ...

11. Lazy loading polymorpic data instead of massive outer join    forum.hibernate.org

Are there major performance ramifications of the way hibernate implements its query when using discrimination and the hierarchy contains many subclasses? For example, we currently have a structure similar to this (only we have around 10-15 subclasses): Code: class Item { ... } |--class SomeItem extends Item { ... } |--class PlainItem extends SomeItem { .... } ...

12. using FetchMode.JOIN to get around lazy loading    forum.hibernate.org

I want to use FetchMode.JOIN to get around lazy loading. I have an application which displays a list of students. Once a student is selected, I need to provide details for this student. This is when I get the lazy loading errors. The students are structured like this. The student object contains a list of enrollments objects. The enrollment object contains ...