private DiscriminatorBuilder HasValue(
InternalEntityTypeBuilder entityTypeBuilder, object value, ConfigurationSource configurationSource)
{
if (entityTypeBuilder == null)
{
return(null);
}
var baseEntityTypeBuilder = EntityTypeBuilder;
if (!baseEntityTypeBuilder.Metadata.IsAssignableFrom(entityTypeBuilder.Metadata) &&
entityTypeBuilder.HasBaseType(baseEntityTypeBuilder.Metadata, configurationSource) == null)
{
throw new InvalidOperationException(
CoreStrings.DiscriminatorEntityTypeNotDerived(
entityTypeBuilder.Metadata.DisplayName(),
baseEntityTypeBuilder.Metadata.DisplayName()));
}
if (configurationSource == ConfigurationSource.Explicit)
{
entityTypeBuilder.Metadata.SetDiscriminatorValue(value);
}
else
{
if (!entityTypeBuilder.CanSetAnnotation(CoreAnnotationNames.DiscriminatorValue, value, configurationSource))
{
return(null);
}
entityTypeBuilder.Metadata.SetDiscriminatorValue(value, configurationSource == ConfigurationSource.DataAnnotation);
}
return(this);
}
