INavigationExpansionExtensibilityHelper Interface
Definition
Important
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Service which helps with various aspects of navigation expansion extensibility.
public interface INavigationExpansionExtensibilityHelpertype INavigationExpansionExtensibilityHelper = interfacePublic Interface INavigationExpansionExtensibilityHelper- Derived
Remarks
The service lifetime is Singleton. This means a single instance is used by many DbContext instances. The implementation must be thread-safe. This service cannot depend on services registered as Scoped.
See Implementation of database providers and extensions and How EF Core queries work for more information and examples.
Properties
| Name | Description |
|---|---|
| SupportsNavigationExpansionJoins |
Whether navigation expansion may add joins to a source to translate aggregates over
reference navigations inside a GroupBy result selector into the grouped query, instead
of a correlated subquery per group. Providers that do not support joins must return
|
Methods
| Name | Description |
|---|---|
| AreQueryRootsCompatible(EntityQueryRootExpression, EntityQueryRootExpression) |
Checks whether two query roots are compatible for a set operation to combine them. |
| AreQueryRootsCompatible(QueryRootExpression, QueryRootExpression) |
Checks whether two query roots are compatible for a set operation to combine them. |
| CreateQueryRoot(IEntityType, EntityQueryRootExpression) |
Creates a new EntityQueryRootExpression. |
| CreateQueryRoot(IEntityType, QueryRootExpression) |
Creates a new QueryRootExpression. |
| ValidateQueryRootCreation(IEntityType, EntityQueryRootExpression) |
Validates whether a new EntityQueryRootExpression can be created. |
