protected virtual bool SetDiscriminatorValue([CanBeNull] object value)
{
if (DiscriminatorProperty == null)
{
throw new InvalidOperationException(
RelationalStrings.NoDiscriminatorForValue(EntityType.DisplayName(), EntityType.RootType().DisplayName()));
}
if (value != null && !DiscriminatorProperty.ClrType.GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo()))
{
throw new InvalidOperationException(RelationalStrings.DiscriminitatorValueIncompatible(
value, DiscriminatorProperty.Name, DiscriminatorProperty.ClrType));
}
return(Annotations.SetAnnotation(RelationalAnnotationNames.DiscriminatorValue, value));
}
protected virtual IProperty GetNonRootDiscriminatorProperty()
{
var propertyName = (string)Annotations.GetAnnotation(RelationalAnnotationNames.DiscriminatorProperty);
return(propertyName == null ? null : EntityType.FindProperty(propertyName));
}
public static EntityType ResolveEntityType([NotNull] this ForeignKey foreignKey, [NotNull] EntityType entityType) => (EntityType)((IForeignKey)foreignKey).ResolveEntityType(entityType);
public static Navigation FindNavigationTo([NotNull] this ForeignKey foreignKey, [NotNull] EntityType entityType) => (Navigation)((IForeignKey)foreignKey).FindNavigationTo(entityType);
public PropertyComparer(EntityType entityType)
{
_entityType = entityType;
}
// Note: this will return an existing foreign key even if it doesn't have the same referenced key
public virtual ForeignKey GetOrAddForeignKey(
[NotNull] IReadOnlyList <Property> properties, [NotNull] Key principalKey, [NotNull] EntityType principalEntityType)
=> FindForeignKey(properties)
?? AddForeignKey(properties, principalKey, principalEntityType);
public virtual ForeignKey GetOrAddForeignKey(
[NotNull] Property property, [NotNull] Key principalKey, [NotNull] EntityType principalEntityType)
=> GetOrAddForeignKey(new[] { property }, principalKey, principalEntityType);