eager database fetching: efficiently load related objects along with the objects being queried.
(contrast with lazy fetching or lazy loading)
Related tags
Questions tagged [eager]
134 questions
0
votes
1 answer
Eager fetching with Joins
Please could someone help me understand the concept of - "Eager fetching with Joins" in Hibernate with a simple example query and table depicting the result of the query. I have searched the net but unable to get an explanation with a good example.…
sid
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0 answers
Is Haskell's "variable" eager evaluated?
I define a value "x" to be 2
Prelude> let x=2
Prelude> :sprint x
x = _
Prelude> show x
"2"
Prelude> :sprint x
x = _
Prelude> x
2
Prelude> :sprint x
x = _
Does Haskell uses the concept "variable" at all? In FP like Haskell, everything is a…
vik santata
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0
votes
1 answer
How to make a JAX-RS annotated singleton class EAGERLY instantiated
I am using Jax-RS 2.0 with Jersey 2.22.1 and Java SE 8, deployed in Tomcat 8.0.30.
I have the POJO annotated with the appropriate JAX-RS annotations, and its working as expected. I have also annotated the POJO with @Singleton. The class gets lazily…
Alan S.
- 11
- 3
0
votes
2 answers
Eager loading returning ID instead of model
I have an issue with Eager Loading using the below code.
Issue is with the Status model
$ticket = Ticket::where('id', $id)->with(['customer', 'status', 'notes' => function($query) {
$query->orderBy('updated_at', 'desc');
}])->first();
If I…
BrendanDodd
- 237
- 2
- 10
0
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1 answer
Laravel 5 Eager Loading not working
I look at many search results with this trouble but i can`t get it to work.
The User Model:
belongsTo(…
Cheycron Blaine
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0
votes
1 answer
Lazy eager map evaluation
There are basically two options to evaluate a map in Scala.
Lazy evaluation computers the function that is passed as a parameter when the next value is needed. IF the function takes one hour to execute then it's one hour to wait when the value is…
Trylks
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1 answer
Fully load entity with JPA before detaching it?
I need to do some processing on an Entity. I'd like it to be outside a transaction. The thing is this entity contains some lazy-loaded fields so that my program fails on accessing some of them because of not having a session active.
The most natural…
kboom
- 2,279
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0
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0 answers
EF Eager Loading does not works with several collections and decimals
I have a problem with Entity Framework and eager loading:
If I want to load several Collections that contains decimals only the first two includes deliver the correct data. The third include delivers a number without comma separator:
Here's my…
Krolock
- 59
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votes
1 answer
Why Hibernate Eager Fetch Does Not Work?
I was trying to write a simple testing program to simulate two objects in my project and run into trouble. Basically I have two simple object, Parent and Child with one to many relationship. Following are two objects:
import java.util.List;
import…
user1007852
- 11
- 4
0
votes
3 answers
Grails GORM Domain class relationship
Grails 1.1.1
Goovy 1.5.7
In a relationship such this:
Author 1 -- n Book n -- 1 Publisher
Defined in Grails:
class Author {
String firstName
String lastName
static hasMany = [books: Book]
static constraints = {
…
Ricardo García
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0
votes
1 answer
hibernate One-to-many association : subselect or eager
In a grails application, i have a relationship that is by default lazy:
class Author{
String name
static mapping = {
books lazy:false
}
}
I have a criteria API query that fetches the Authors.
When i run the query …
user711189
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0
votes
1 answer
JPA EAGER fetch works only if server is restarted
Good evening everybody, this is my first post on Stack Overflow.
I have been quite recently introduced to Java 6 EE and, in particular, to JPA as part of the JSF 2.1 framework and I am now facing a strange behavior that I would like you to help me…
algu84
- 3
- 3
0
votes
2 answers
Load the whole database with Hibernate
I am using SQLite3 and Hibernate with Java. Can I somehow load the whole database in memory or fetch all data from the database so that I can access mapped objects fastest? For example if we have a Company and Employee classes and in Company we've…
user1305056
0
votes
1 answer
Grails Eager fetching an empty association returns null
I have domain classes as follows
Class Author{
String name
List books = LazyList.decorate(new ArrayList(), FactoryUtils.instantiateFactory(Book.class)
static hasMany = [books:Book]
}
Class Book {
String title
static belongsTo =…
vijay tyagi
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