Monthly Archives: May 2014

Missing EF Feature Workarounds: Filters

Filters are one of those ORM features that when you need it, you REALLY need it. NHibernate has had this feature for quite a long time, but it still doesn’t exist in EF. What are filters? In NHibernate, a filter … Continue reading 

Posted in Entity Framework, NHibernate | 19 Comments

A better domain events pattern

Domain events are one of the final patterns needed to create a fully encapsulated domain model – one that fully enforces a consistency boundary and invariants. The need for domain events comes from a desire to inject services into domain … Continue reading 

Posted in Domain-Driven Design, Entity Framework | 75 Comments

Missing EF Feature Workarounds: Encapsulated collections

The list of missing EF features is quite long, but several of the items in the list do have workarounds. For encapsulated domain models that enforce their own consistency boundary, encapsulating a collection is quite important to ensure your domain … Continue reading 

Posted in Entity Framework | 31 Comments

Missing EF Feature Workarounds: Cascade delete orphans

Currently, Entity Framework cannot cascade delete orphans. In fact, there’s not a real concept of parent-child relationships, there’s only navigation properties, collection properties, and a notion of required/optional relationships. You can cascade delete if a parent is deleted, but if … Continue reading 

Posted in Entity Framework | 11 Comments

Projecting computed properties with LINQ and AutoMapper

Another from the “wicked awesome” category of AutoMapper. Other blogs about AutoMapper and LINQ: Efficient querying with LINQ, AutoMapper and Future queries Using AutoMapper to prevent SELECT N+1 problems Using AutoMapper to perform LINQ aggregations One current limitation of ORM … Continue reading 

Posted in AutoMapper | 7 Comments

Missing NHibernate features in Entity Framework

Recently I blogged about migrating to EF from NHibernate and how easy it is to create fully encapsulated models mapped to EF. In this particular project, migrating was relatively painless, as it was a fairly new schema and quite amenable … Continue reading 

Posted in Entity Framework, NHibernate | 20 Comments