Top "Entity" questions

In computer science an entity is an object which has an identity and can be uniquely determined, holds storable information or can be processed.

Loading multiple entities by id efficiently in Hibernate

So, I'm getting a number of instances of a particular entity by id: for(Integer songId:songGroup.getSongIds()) { session = HibernateUtil.…

java hibernate entity query-performance identifier
Modeling 3 entities with relationships

Say we have three entities in our environment, Teacher, Student and Course. Every teacher has (teaches) 1 or more Courses and …

database database-design entity erd
Entity Framework Code First CTP4 Default Column Values?

I have been looking into Code First with Entity Framework CTP4 and you can use the ModelBuilder to build up …

c# entity-framework-4 entity ctp4
The entity type <class> is not part of the model for the current context

This is a MODEL first approach. I have already researched this extensiely and have not come up with an answer. …

entity-framework entity-framework-4.1 entity ef-model-first
Hibernate - a different object with the same identifier value was already associated with the session

Possible Duplicate: Spring + Hibernate : a different object with the same identifier value was already associated with the session After changing …

hibernate spring annotations entity validates-uniqueness-of
No metadata found for type using OpenJPA with RuntimeUnenhancedClasses

I am using JPA (OpenJPA). I have following entries in my persistence.xml: <property name="openjpa.RuntimeUnenhancedClasses" value="supported"/&…

java jpa entity openjpa
Value object or entity object in my Hibernate mapping?

I'm trying to design a pretty simple app and am getting myself a bit confused with Hibernate's definition of entity …

hibernate orm entity one-to-many value-objects
Doctrine Mapping in Symfony2 using YAML

I have a question regarding YAML configuration of Doctrine in Symfony2. I have created an entity via "doctrine:generate:entity", …

symfony doctrine-orm entity yaml entities
Sending Telegram messages with Telethon: some entity parameters work, others don't?

I'm using Telethon's send_message function to send messages to various chats. Sometimes, the destination is another user (just a …

python entity telegram python-telegram-bot telethon
Multiple Versions of SQL Server using Entity Framework in a single ASP.NET application

I am using the Entity Framework in a web application that utilizes SQL server 2000, 2005, and 2008. When I create a new …

sql-server-2005 entity-framework sql-server-2000 entity