/// <summary>
/// <para>
/// Returns the <see cref="MySqlValueGenerationStrategy" /> to use for the property.
/// </para>
/// <para>
/// If no strategy is set for the property, then the strategy to use will be taken from the <see cref="IModel" />.
/// </para>
/// </summary>
/// <returns> The strategy, or <see cref="MySqlValueGenerationStrategy.None"/> if none was set. </returns>
public static MySqlValueGenerationStrategy?GetValueGenerationStrategy([NotNull] this IReadOnlyProperty property, StoreObjectIdentifier storeObject = default)
{
var annotation = property[MySqlAnnotationNames.ValueGenerationStrategy];
if (annotation != null)
{
// Allow users to use the underlying type value instead of the enum itself.
// Workaround for: https://github.com/PomeloFoundation/Pomelo.EntityFrameworkCore.MySql/issues/1205
//return ObjectToEnumConverter.GetEnumValue<MySqlValueGenerationStrategy>(annotation);
return(ObjectToEnumConverter.GetEnumValue <MySqlValueGenerationStrategy>(annotation));
}
if (property.GetContainingForeignKeys().Any(fk => !fk.IsBaseLinking()) ||
property.TryGetDefaultValue(storeObject, out _) ||
property.GetDefaultValueSql() != null ||
property.GetComputedColumnSql() != null)
{
return(null);
}
if (storeObject != default &&
property.ValueGenerated == ValueGenerated.Never)
{
return(property.FindSharedStoreObjectRootProperty(storeObject)
?.GetValueGenerationStrategy(storeObject));
}
if (property.ValueGenerated == ValueGenerated.OnAdd &&
IsCompatibleIdentityColumn(property))
{
return(MySqlValueGenerationStrategy.IdentityColumn);
}
if (property.ValueGenerated == ValueGenerated.OnAddOrUpdate &&
IsCompatibleComputedColumn(property))
{
return(MySqlValueGenerationStrategy.ComputedColumn);
}
return(null);
}
