Not Supported Constructs

The following LLBLGen Pro Designer constructs are not supported for Entity Framework v5 and v6. Using an element on this list will result in a validation error of the project.

  • Type converters
  • Discriminator fields which have as type System.Guid.
  • Typed View definitions mapped onto a table or view
  • Action Combinations on mappings (all entities are always Create/Retrieve/Update/Delete)
  • Schema based sequences, e.g. sequences in PostgreSql, SQL Server 2012 and higher.
  • Many-to-many relationships which are not 'pure': only many-to-many relationships where the intermediate entity only has foreign key fields and they all form the PK are supported.
Info

Mapping an entity onto a view is supported, under the following conditions:

  • The entity has at least one identifying field set
  • All entities mapped onto the same view have the same view field(s) as identifying field(s).

This restriction is necessary because the entity framework requires a
primary key on every database element which is a target of a mapping. As a view doesn't have a pk definition, it's determined from the
entity/entities mapped onto the view.