public static async Task BulkInsertWithIdGeneration <T>(this IContextAdapter contextAdapter, IList <T> forSave)
where T : class
{
if (forSave == null)
{
return;
}
var pk = contextAdapter.GetPk <T>();
if (!pk.IsIdentity)
{
await contextAdapter.BulkInsert(forSave, true);
}
else
{
var isNew = ExpressHelper.IsPropertyEmpty <T>(pk.PropertyName, pk.Type).Compile();
var newObjects = forSave.Where(isNew).ToArray();
if (!newObjects.Any())
{
return;
}
await contextAdapter.RetrieveIds(newObjects);
await contextAdapter.BulkInsert(newObjects, true);
}
}
private Action <TSource, TDestination> GetCopyPk(IContextAdapter contextAdapter)
{
var expression = ExpressHelper.CreateCopy <TSource, TDestination>(
contextAdapter.GetPk <TSource>().PropertyName,
contextAdapter.GetForwardKeyProperty <TDestination>(_propertyName, typeof(TSource)));
return(expression.Compile());
}
private Action <TSource, TSource> GetCopyPk(IContextAdapter contextAdapter)
{
var path = ExpressHelper.GetPath(_extractor);
var propertyName = contextAdapter.GetBackwardKeyProperty <TSource>(path);
var expression = ExpressHelper.CreateCopy <TSource, TSource>(
$"{path}.{contextAdapter.GetPk<TSource>().PropertyName}", propertyName);
return(expression.Compile());
}
public async Task RetrieveIdsLong <TEntity>(IContextAdapter context, TEntity[] entities)
{
var tableName = context.GetTableName <TEntity>();
var entitiesLength = entities.Length;
var minId = Minus(await context.RunScalar <TValue>(RetrieveIdsSql(tableName, entitiesLength)), entitiesLength);
var pkSetter = ExpressHelper.GetPropSetter <TEntity, TValue>(context.GetPk <TEntity>().PropertyName).Compile();
var id = minId;
foreach (var entity in entities)
{
id = AddOne(id);
pkSetter(entity, id);
}
}
public static async Task RetrieveIds <TEntity>(this IContextAdapter contextAdapter, TEntity[] entities)
where TEntity : class
{
await Worker[contextAdapter.GetPk <TEntity>().Type].RetrieveIdsLong(contextAdapter, entities);
}