void IMetadataBuilder.BuildColumnMetadata(ColumnMetadata metadata, PropertyBuilder propertyBuilder)
{
if (!metadata.IsColumn)
{
// for non-column mapping ignore any other metadata properties
propertyBuilder.AddAttribute(WellKnownTypes.LinqToDB.Mapping.NotColumnAttribute);
return;
}
// compared to old T4 implementation we use only ColumnAttribute
// T4 used separate attributes for primary key, nullability and identity
// but they just duplicate ColumnAttribute functionality
var attr = propertyBuilder.AddAttribute(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute);
// always generate column name when it is provided, even if it match property name
// otherwise generated code will be refactoring-unfriendly (will break on property rename)
// note that rename could happen not only as user's action in generated code, but also during code
// generation to resolve naming conflicts with other members/types
if (metadata.Name != null)
{
attr.Parameter(_builder.Constant(metadata.Name, true));
}
// generate only "CanBeNull = false" only for non-default cases (where linq2db already infer nullability from type):
// - for reference type is is true by default
// - for value type it is false
// - for nullable value type it is true
if ((!propertyBuilder.Property.Type.Type.IsValueType && !metadata.CanBeNull) ||
(propertyBuilder.Property.Type.Type.IsValueType && metadata.CanBeNull != propertyBuilder.Property.Type.Type.IsNullable))
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_CanBeNull, _builder.Constant(metadata.CanBeNull, true));
}
if (metadata.Configuration != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_Configuration, _builder.Constant(metadata.Configuration, true));
}
if (metadata.DataType != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_DataType, _builder.Constant(metadata.DataType.Value, true));
}
// generate database type attributes
if (metadata.DbType?.Name != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_DbType, _builder.Constant(metadata.DbType.Name, true));
}
if (metadata.DbType?.Length != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_Length, _builder.Constant(metadata.DbType.Length.Value, true));
}
if (metadata.DbType?.Precision != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_Precision, _builder.Constant(metadata.DbType.Precision.Value, true));
}
if (metadata.DbType?.Scale != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_Scale, _builder.Constant(metadata.DbType.Scale.Value, true));
}
if (metadata.IsPrimaryKey)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_IsPrimaryKey, _builder.Constant(true, true));
if (metadata.PrimaryKeyOrder != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_PrimaryKeyOrder, _builder.Constant(metadata.PrimaryKeyOrder.Value, true));
}
}
if (metadata.IsIdentity)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_IsIdentity, _builder.Constant(true, true));
}
if (metadata.SkipOnInsert)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_SkipOnInsert, _builder.Constant(true, true));
}
if (metadata.SkipOnUpdate)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_SkipOnUpdate, _builder.Constant(true, true));
}
if (metadata.SkipOnEntityFetch)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_SkipOnEntityFetch, _builder.Constant(true, true));
}
if (metadata.MemberName != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_MemberName, _builder.Constant(metadata.MemberName, true));
}
if (metadata.Storage != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_Storage, _builder.Constant(metadata.Storage, true));
}
if (metadata.CreateFormat != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_CreateFormat, _builder.Constant(metadata.CreateFormat, true));
}
if (metadata.IsDiscriminator)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_IsDiscriminator, _builder.Constant(true, true));
}
if (metadata.Order != null)
{
attr.Parameter(WellKnownTypes.LinqToDB.Mapping.ColumnAttribute_Order, _builder.Constant(metadata.Order.Value, true));
}
}
public static void AddAttribute(this PropertyBuilder Builder, CustomAttributeData CustomAttribute) => Builder.AddAttribute(CustomAttribute.ToCustomAttributeBuilder());
void IMetadataBuilder.BuildAssociationMetadata(AssociationMetadata metadata, PropertyBuilder propertyBuilder)
{
BuildAssociationAttribute(metadata, propertyBuilder.AddAttribute(WellKnownTypes.LinqToDB.Mapping.AssociationAttribute));
}
