/// <summary>
/// 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.
/// </summary>
protected virtual void ValidateOnlyETagConcurrencyToken(
[NotNull] IModel model,
[NotNull] IDiagnosticsLogger <DbLoggerCategory.Model.Validation> logger)
{
foreach (var entityType in model.GetEntityTypes())
{
foreach (var property in entityType.GetDeclaredProperties())
{
if (property.IsConcurrencyToken)
{
var storeName = property.GetJsonPropertyName();
if (storeName != "_etag")
{
throw new InvalidOperationException(
CosmosStrings.NonETagConcurrencyToken(entityType.DisplayName(), storeName));
}
var etagType = property.GetTypeMapping().Converter?.ProviderClrType ?? property.ClrType;
if (etagType != typeof(string))
{
throw new InvalidOperationException(
CosmosStrings.ETagNonStringStoreType(
property.Name, entityType.DisplayName(), etagType.ShortDisplayName()));
}
}
}
}
}
public override void Properties_can_be_made_concurrency_tokens()
{
Assert.Equal(
CosmosStrings.NonETagConcurrencyToken(nameof(Quarks), "Charm"),
Assert.Throws <InvalidOperationException>(
() => base.Properties_can_be_made_concurrency_tokens()).Message);
}
public virtual void Detects_invalid_concurrency_token()
{
var modelBuilder = CreateConventionalModelBuilder();
modelBuilder.Entity <Customer>()
.ToContainer("Orders")
.Property <string>("_not_etag")
.IsConcurrencyToken();
VerifyError(CosmosStrings.NonETagConcurrencyToken(typeof(Customer).Name, "_not_etag"), modelBuilder);
}