RelationalNavigationExpansionExtensibilityHelper Class
Definition
Important
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Relational-specific service which helps with various aspects of navigation expansion extensibility.
public class RelationalNavigationExpansionExtensibilityHelper : Microsoft.EntityFrameworkCore.Query.NavigationExpansionExtensibilityHelpertype RelationalNavigationExpansionExtensibilityHelper = class
inherit NavigationExpansionExtensibilityHelper
interface INavigationExpansionExtensibilityHelperPublic Class RelationalNavigationExpansionExtensibilityHelper
Inherits NavigationExpansionExtensibilityHelper- Inheritance
- Implements
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.
Constructors
| Name | Description |
|---|---|
| RelationalNavigationExpansionExtensibilityHelper(NavigationExpansionExtensibilityHelperDependencies) |
Creates a new instance of the RelationalNavigationExpansionExtensibilityHelper class. |
Properties
| Name | Description |
|---|---|
| Dependencies |
Dependencies for this service. (Inherited from NavigationExpansionExtensibilityHelper) |
Methods
| Name | Description |
|---|---|
| AreQueryRootsCompatible(EntityQueryRootExpression, EntityQueryRootExpression) |
Checks whether two query roots are compatible for a set operation to combine them. (Inherited from NavigationExpansionExtensibilityHelper) |
| CreateQueryRoot(IEntityType, EntityQueryRootExpression) |
Creates a new EntityQueryRootExpression. (Inherited from NavigationExpansionExtensibilityHelper) |
| ValidateQueryRootCreation(IEntityType, EntityQueryRootExpression) |
Validates whether a new EntityQueryRootExpression can be created. (Inherited from NavigationExpansionExtensibilityHelper) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| INavigationExpansionExtensibilityHelper.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
|
