/// <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);
}
public static MySqlValueGenerationStrategy?GetValueGenerationStrategy(IAnnotation[] annotations)
{
var valueGenerationStrategy = ObjectToEnumConverter.GetEnumValue <MySqlValueGenerationStrategy>(
annotations.FirstOrDefault(a => a.Name == MySqlAnnotationNames.ValueGenerationStrategy)?.Value);
if (!valueGenerationStrategy.HasValue ||
valueGenerationStrategy == MySqlValueGenerationStrategy.None)
{
var generatedOnAddAnnotation = annotations.FirstOrDefault(a => a.Name == MySqlAnnotationNames.LegacyValueGeneratedOnAdd)?.Value;
if (generatedOnAddAnnotation != null && (bool)generatedOnAddAnnotation)
{
valueGenerationStrategy = MySqlValueGenerationStrategy.IdentityColumn;
}
var generatedOnAddOrUpdateAnnotation = annotations.FirstOrDefault(a => a.Name == MySqlAnnotationNames.LegacyValueGeneratedOnAddOrUpdate)?.Value;
if (generatedOnAddOrUpdateAnnotation != null && (bool)generatedOnAddOrUpdateAnnotation)
{
valueGenerationStrategy = MySqlValueGenerationStrategy.ComputedColumn;
}
}
return(valueGenerationStrategy);
}
/// <summary> /// Returns the character set delegation modes for the model/database. /// </summary> /// <param name="model"> The model. </param> /// <returns> The character set delegation modes. </returns> public static DelegationModes?GetCharSetDelegation([NotNull] this IModel model) => ObjectToEnumConverter.GetEnumValue <DelegationModes>(model[MySqlAnnotationNames.CharSetDelegation]) ?? (model[MySqlAnnotationNames.CharSetDelegation] is bool explicitlyDelegateToChildren
/// <summary> /// Returns the character set delegation modes for the entity/table. /// </summary> /// <param name="entityType"> The entity type. </param> /// <returns> The character set delegation modes. </returns> public static DelegationModes?GetCharSetDelegation([NotNull] this IReadOnlyEntityType entityType) => ObjectToEnumConverter.GetEnumValue <DelegationModes>(entityType[MySqlAnnotationNames.CharSetDelegation]) ?? (entityType[MySqlAnnotationNames.CharSetDelegation] is bool explicitlyDelegateToChildren
