Dapper Result MultiMapping Description. Extension methods can be used to execute a query and map the result to a strongly typed list with relations. The relation can be either: One to One; One to Many; These extension methods can be called from any object of type IDbConnection.
The Myth of Manual POCO Mapping Performance. After all, the main and unique feature of dapper. net is speed. Why didn't they go with manual mapping, after all, even in their (old and kinda flawed and obsolete) benchmarks manual is still faster.
Previous Next I needed a mapper for a project I have using Dapper. I tried Automapper and other tools that comes with Dapper (Contrib, Rainbow, etc.
), but I couldn't make Automapper work properly and the rest do Dapper Manual 1 iTunes to Digital Audio Player Sync Tool 1 Introduction 3 What Dapper Does An Overview 5 Security and the OS X Sandbox 6 Quick Start 7 Located at Packages. MyGet Prerelease feed: https: www This is ideal in most cases as it minimizes shared locks in the db and cuts down on db network time. This is the user case for multi mapping.
You tell dapper that the query returns a Post and a User object and then give it a function describing what Custom mapping is the feature that Dapper offers to manually define, for each object, which column is mapped to which property.
Custom mapping is configured via the SetTypeMap static method: Mapping data stored in a single row in a database to multiple objects in your object model is quite a common scenario.
Dapper provides a specific feature to handle that and, if you are in the Dapper. Mapper is an extension to Dapper multi mapping which figures out the relationships between the returned objects and automatically assigns them. Dapper. Mapper is a small library which extends Dapper multimapping functionality. It allows you to map a single row to multiple objects. This library automatically figures out the relationships between the returned objects and automatically assigns them.