Entity Framework 7:New features and changes
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1 Entity Framework 7: New features and changes Manfred Steyer Books Folie 2
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Transcript of Entity Framework 7:New features and changes
1
Entity Framework 7:New features and changes
Manfred Steyer
Books
Folie 2
2
Contents
Entity Framework Today
Current Influences
Entity Framework Tomorrow
DEMO
Conclusion
Folie 3
ENTITY FRAMEWORK TODAY
Page 4
3
EF 6.x
Folie 6
O/R-MapperMature
(since 2008)Optimized
Ecosystem Integration
Recommended LINQ
Modes of Operation
Folie 7
• Model First
• DB First
Mapping via XML
• Code First
• Code First with Reverse Engineering
Mapping via Code
4
Code First brings several advantages
Folie 8
Reverse Engineering
Source ControlMore Intuitive for
Developers
More Freedom for Developers
Code-basedConfiguration
Conventions
Migrations
DbContext
Object Model
Folie 9
ObjectContext
5
CURRENT INFLUENCES
Page 10
Current Influences
Folie 11
6
ENTITY FRAMEWORK TOMORROW
Page 12
Goals
Reach
• .NET Core
• NoSQL
Tity up
• Focus: Code First
• RIP ObjectContext
Folie 13
7
Non-Goals
Folie 14
• Yes, but only when itreally makes sense
API-Changes
• NoSQL != RDBMSAbstract
Paradigms
Migration
You have to modify existing code
Don't do it now!
Current Version 6.x will stay
8
Feature Set now
Folie 16
EF 6
EF 7
EF 6 is still the recommended version!
Feature Set in Future
Folie 17
EF 6
EF 7.x+
9
Some Limitations in 7.0
M:N-Relations
Model it with two 1:N
Lazy Loading
Just TPH-Inheritance
Complex Types
Custom Conventions
Mappings to Stored Procedures
Update Model from Database
Non-relational Providers
Some new Features
Handling of detached Entities
Improvements for Eager-Loading and Batching
Client-Evaluation and Raw SQL
Shadow State
Alternate Keys
Linux, Universal-Apps
PostgreSQL, SQLite
Folie 19
10
7.0 or 6.x
Web with.NET Core
EF 7.0
Universal Apps
EF 7.0
ElseEF 6.x
Code Frist
DEMO
Page 21
11
Conclusion
Version 7: Spring-Cleaning
Getting rid of Legacy
One Mode of Operation: "Code First"
Time seems to be fitting: .NET Core
Increasing Reach:
NoSQL, Linux, Universal-Apps (.NET Core)
Providers for SQL Server, PostgreSQL, SQLite
New features, like Batching or Shadow Properties
EF 6.x is still recommended
Folie 22
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