/// <summary>
/// 对实体集合进行批量操作。
/// </summary>
/// <param name="instances">要操作的实体序列。</param>
/// <param name="fnOperation">实体操作表达式，权提供 Insert、Update 和 Delete 操作。</param>
/// <returns>影响的实体数。</returns>
public int Batch(IEnumerable <TEntity> instances, Expression <Func <IRepository <TEntity>, TEntity, int> > fnOperation)
{
var operateName = OperateFinder.Find(fnOperation);
var eventType = GetBeforeEventType(operateName);
return(EntityPersistentSubscribePublisher.OnBatch(instances.Cast <IEntity>(), eventType, () => repositoryProxy.Batch(instances, fnOperation)));
}
/// <summary>
/// 对实体集合进行批量操作。
/// </summary>
/// <param name="instances">要操作的实体序列。</param>
/// <param name="fnOperation">实体操作表达式，权提供 Insert、Update 和 Delete 操作。</param>
/// <returns>影响的实体数。</returns>
public int Batch(IEnumerable <TEntity> instances, Expression <Func <IRepository <TEntity>, TEntity, int> > fnOperation)
{
if (instances.IsNullOrEmpty())
{
return(-1);
}
var operateName = OperateFinder.Find(fnOperation);
var eventType = GetBeforeEventType(operateName);
int func() => repositoryProxy.Batch(instances, fnOperation);
return(context.Options.NotifyEvents ?
EntityPersistentSubscribePublisher.OnBatch(instances.Cast <IEntity>(), eventType, func) :
func());
}