Questions tagged [bidirectional-relation]
98 questions
1
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1 answer
Querying single relationship from a bidirectional relationship in Neo4j
Is it possible to show only one direction relationship from a bidirectional relationship?
(n)-[:EMAIL_LINK]->(m)
(n)<-[:EMAIL_LINK]-(m)
Daryl
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0 answers
Bidirectional references in MongoEngine
PHP Doctrine has support for bi-directional references. I wonder if MongoEngine has something similar to this, so that when, for example, I add a post of a user, I don't need to manually keep both sides synced.
I could also only store the reference…
322896
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How to exclude bidirectionnal relations using NativeQuery and ResultSetMapping?
I have 2 entities, User and Customer, with a OneToOne bi-directionnal relation. User entity also have a bi-directionnal relation with Invoice entity :
class User implements UserInterface
{
/**
*…
VaN
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1 answer
How to properly have an automatically updating one-to-many bi-directional relationship in C#
In an example game engine server, the game world could be represented by a World object. The game might have multiple game worlds and a player who is in a world only needs to receive position data of units in that world.
class World
{
public…
Layl Conway
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3 answers
Hibernate / "absolutely necessary with bi-directional links"?
Here's an excerpt of the official Hibernate tutorial
First, keep in mind that Hibernate does not affect normal Java
semantics. How did we create a link between a Person and an Event in
the unidirectional example? You add an instance of Event to…
Mik378
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1 answer
Bi-directional association between Footballer Mapper and Bowler Mapper
This question is about a specific UML diagram in the book called Patterns Of Enterprise Application Architecture, by Martin Fowler.
Why is there a 'bi-directional association' between Footballer Mapper and Bowler Mapper
in the 'Inheritance Mapper'…
JW.
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1 answer
Remove object with relationships - Hibernate
I'm having some problems with Hibernate relationships and Save-Update-Delete. Lets say I have the following:
public class Subject{
@Id
private int ID;
private String Name;
//getters and setters
}
public class Grade{
…
Quarktum
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2 answers
nhibernate mapping many-to-many: why was the whole bag collections deleted and reinserted?
Nhibernate users, professionals, gurus and developers are expected. Please help !!!
I want to realise a n:m relation between two classes. A student attends in more courses and a course consists of more students as members. I do a bidirectional…
newbieNhibernate
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1 answer
Bi-directional mapping in ZODB in Python
I know that in ZODB you can use a BTree to store large amounts of data and have lookups based on a key with total ordering be logarithmic to the size of the tree.
The problem is, I have some Persistent object Foo, and some other Persistent object…
fatuhoku
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1 answer
Retrieve records in mongoDB using bidirectional query
I have two collections - Tickets and Users. Where a user can have one to many tickets. The ticket collection is defined as follows
Ticket = {_id, ownerId, profile: {name}}
The ownerId is used to find all tickets that belong to a specific person. I…
Warz
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1
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1 answer
Fluent Nhibernate: how to map bidirectional relationship
I'm trying to map the following but not sure if it is at all possible with the current nHibernate/fluent nHibernate so any suggestions would be greatly appreciated.
Basically I've got the following 2 classes
public class Venue
{
public virtual…
Duy
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2 answers
TYPO3 Bidirectional relation with same model
I have TYPO3 11.5.
I have a custom model "Atto".
In my TCA configuration i used:
'atto' => [
'exclude' => true,
'label' => 'Atti',
'config' => [
'type' => 'group',
…
MarioProject
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0
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1 answer
Bidirectional relationship with superclass entity property in JPA
I'm tying to implement some tree-like structure with JPA.
I have a "folder" entity and a "test" entity. Folder can contain both folders and tests. Test doesnt contains anything.
Both test and folder have a Node superclass, looks like…
user976426
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0
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2 answers
Problem to implement bidirectional relationship in hibernate with my spring boot api
I want to create a spring boot rest controller with this specification :
Customers of an electricity and gas supply company can choose to receive their monthly bills either by email or by regular mail, neither or both.
My goal is to create java…
ln3106
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- 10
0
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2 answers
Fluent NHibernate insert parent id problem with HasMany relationship
I can't understand why NHibernate is inserting a child entity without the foreign key of the parent.
The only way I found to solve this is with a Bidirectional relationship, is there another way?
Here are the classes:
public class Parent
{
…
user948104