ForeignKeyPropertyDiscoveryConvention Class

Definition

Namespace:

Microsoft.EntityFrameworkCore.Metadata.Conventions

Assembly:

Microsoft.EntityFrameworkCore.dll

Package:

Microsoft.EntityFrameworkCore v8.0.0

A convention that finds foreign key properties for relationships based on their names, ignoring case:

• [navigation property name][principal key property name]
• [navigation property name]Id
• [principal entity name][principal key property name]
• [principal entity name]Id

public class ForeignKeyPropertyDiscoveryConvention : Microsoft.EntityFrameworkCore.Metadata.Conventions.IEntityTypeMemberIgnoredConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IEntityTypePrimaryKeyChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IForeignKeyAddedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IForeignKeyPrincipalEndChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IForeignKeyPropertiesChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IForeignKeyRequirednessChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IForeignKeyUniquenessChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IKeyAddedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IKeyRemovedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IModelFinalizingConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.INavigationAddedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IPropertyAddedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IPropertyFieldChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.IPropertyNullabilityChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.ISkipNavigationForeignKeyChangedConvention, Microsoft.EntityFrameworkCore.Metadata.Conventions.ISkipNavigationInverseChangedConvention

type ForeignKeyPropertyDiscoveryConvention = class
    interface IEntityTypeMemberIgnoredConvention
    interface IConvention
    interface IEntityTypePrimaryKeyChangedConvention
    interface IForeignKeyAddedConvention
    interface IForeignKeyPropertiesChangedConvention
    interface IForeignKeyPrincipalEndChangedConvention
    interface IForeignKeyUniquenessChangedConvention
    interface IForeignKeyRequirednessChangedConvention
    interface IKeyAddedConvention
    interface IKeyRemovedConvention
    interface INavigationAddedConvention
    interface ISkipNavigationForeignKeyChangedConvention
    interface ISkipNavigationInverseChangedConvention
    interface IPropertyAddedConvention
    interface IPropertyNullabilityChangedConvention
    interface IPropertyFieldChangedConvention
    interface IModelFinalizingConvention

Public Class ForeignKeyPropertyDiscoveryConvention
Implements IEntityTypeMemberIgnoredConvention, IEntityTypePrimaryKeyChangedConvention, IForeignKeyAddedConvention, IForeignKeyPrincipalEndChangedConvention, IForeignKeyPropertiesChangedConvention, IForeignKeyRequirednessChangedConvention, IForeignKeyUniquenessChangedConvention, IKeyAddedConvention, IKeyRemovedConvention, IModelFinalizingConvention, INavigationAddedConvention, IPropertyAddedConvention, IPropertyFieldChangedConvention, IPropertyNullabilityChangedConvention, ISkipNavigationForeignKeyChangedConvention, ISkipNavigationInverseChangedConvention

Inheritance

Object

ForeignKeyPropertyDiscoveryConvention

Implements

IConvention IEntityTypeMemberIgnoredConvention IEntityTypePrimaryKeyChangedConvention IForeignKeyAddedConvention IForeignKeyPrincipalEndChangedConvention IForeignKeyPropertiesChangedConvention IForeignKeyRequirednessChangedConvention IForeignKeyUniquenessChangedConvention IKeyAddedConvention IKeyRemovedConvention INavigationAddedConvention IPropertyAddedConvention IPropertyFieldChangedConvention IPropertyNullabilityChangedConvention IModelFinalizingConvention ISkipNavigationForeignKeyChangedConvention ISkipNavigationInverseChangedConvention

Remarks

If no matching properties were found, the relationship doesn't represent an ownership, the dependent side is not ambiguous and not derived then if the relationship is one-to-one, the primary key properties are used, otherwise the convention tries to match properties with the exact name as principal key properties if they are a proper subset of the dependent PK.

If a match was found, but the property types are not compatible with the principal key types no further matches are searched for.

If the relationship uses shadow properties created by convention they are recreated to remove suffixes used to make the names unique.

See Model building conventions for more information and examples.

Constructors

ForeignKeyPropertyDiscoveryConvention(ProviderConventionSetBuilderDependencies)

Creates a new instance of ForeignKeyPropertyDiscoveryConvention.

Properties

Dependencies

Dependencies for this service.

Methods

GetPropertyBaseName(IReadOnlyForeignKey)	Gets the string that should be used as part of the shadow properties created for the given foreign key.
ProcessEntityTypeMemberIgnored(IConventionEntityTypeBuilder, String, IConventionContext<String>)	Called after an entity type member is ignored.
ProcessEntityTypePrimaryKeyChanged(IConventionEntityTypeBuilder, IConventionKey, IConventionKey, IConventionContext<IConventionKey>)	Called after the primary key for an entity type is changed.
ProcessForeignKeyAdded(IConventionForeignKeyBuilder, IConventionContext<IConventionForeignKeyBuilder>)	Called after a foreign key is added to the entity type.
ProcessForeignKeyPrincipalEndChanged(IConventionForeignKeyBuilder, IConventionContext<IConventionForeignKeyBuilder>)	Called after the principal end of a foreign key is changed.
ProcessForeignKeyPropertiesChanged(IConventionForeignKeyBuilder, IReadOnlyList<IConventionProperty>, IConventionKey, IConventionContext<IReadOnlyList<IConventionProperty>>)	Called after the foreign key properties or principal key are changed.
ProcessForeignKeyRequirednessChanged(IConventionForeignKeyBuilder, IConventionContext<Nullable<Boolean>>)	Called after the requiredness for a foreign key is changed.
ProcessForeignKeyUniquenessChanged(IConventionForeignKeyBuilder, IConventionContext<Nullable<Boolean>>)	Called after the uniqueness for a foreign key is changed.
ProcessKeyAdded(IConventionKeyBuilder, IConventionContext<IConventionKeyBuilder>)	Called after a key is added to the entity type.
ProcessKeyRemoved(IConventionEntityTypeBuilder, IConventionKey, IConventionContext<IConventionKey>)	This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.
ProcessModelFinalizing(IConventionModelBuilder, IConventionContext<IConventionModelBuilder>)	Called when a model is being finalized.
ProcessNavigationAdded(IConventionNavigationBuilder, IConventionContext<IConventionNavigationBuilder>)	Called after a navigation is added to the entity type.
ProcessPropertyAdded(IConventionPropertyBuilder, IConventionContext<IConventionPropertyBuilder>)	Called after a property is added to the entity type.
ProcessPropertyFieldChanged(IConventionPropertyBuilder, FieldInfo, FieldInfo, IConventionContext<FieldInfo>)	Called after the backing field for a property is changed.
ProcessPropertyNullabilityChanged(IConventionPropertyBuilder, IConventionContext<Nullable<Boolean>>)	Called after the nullability for a property is changed.
ProcessSkipNavigationForeignKeyChanged(IConventionSkipNavigationBuilder, IConventionForeignKey, IConventionForeignKey, IConventionContext<IConventionForeignKey>)	Called after a skip navigation inverse is changed.
ProcessSkipNavigationInverseChanged(IConventionSkipNavigationBuilder, IConventionSkipNavigation, IConventionSkipNavigation, IConventionContext<IConventionSkipNavigation>)	Called after a skip navigation inverse is changed.