Feature request: Load with proxy

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#997 2 comments 8 reactions 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
csharp
Domain
database

Research direction

The issue names no files, tests, or entry points. Start by locating EF Core's existing entity-loading and proxy-related behavior, then define how Load should create an unloaded proxy, lazy-load accessed properties, and allow a navigation assignment to be saved without fetching the related row.

Written by the indexing model from the issue text.

Description

area-change-tracking area-o/c-mapping area-query area-save-changes

Hi,

NHibernate's Load method is really useful. Example:

var user = dbContext.Users.Load(42);

It does not perform SQL but creates a proxy object. If we want to use user's a properties, it's lazy loaded from DB. If we use only Id, it's not loaded from DB. Also, we may assign it to another entity's navigation property. Example:

var blog = new Blog(...);
blog.User = dbContext.Users.Load(42);
dbContext.Blogs.Add(blog);
dbContext.SaveChanges();

In this code, User 42 is never fetched from DB since we did not used it's properties (other than Id).

Dominant language
C#
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Forks
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Avg merge
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Merged PRs (30d)
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