/// <summary>
/// 读取模型实例。
/// </summary>
/// <param name="sql">SQL脚本。</param>
/// <returns>返回模型实例。</returns>
protected TModel Get(SqlScript sql)
{
using (var reader = _db.ExecuteReader(sql.ToString()))
{
if (reader.Read())
{
return(Entity.Read <TModel>(reader));
}
}
return(default(TModel));
}
/// <summary>
/// 读取模型实例。
/// </summary>
/// <param name="sql">SQL脚本。</param>
/// <param name="cancellationToken">取消标记。</param>
/// <returns>返回模型实例。</returns>
protected async Task <TModel> GetAsync(SqlScript sql, CancellationToken cancellationToken = new CancellationToken())
{
using (var reader = await _db.ExecuteReaderAsync(sql.ToString(), cancellationToken: cancellationToken))
{
if (await reader.ReadAsync(cancellationToken))
{
return(Entity.Read <TModel>(reader));
}
}
return(default(TModel));
}
/// <summary>
/// 读取模型实例列表。
/// </summary>
/// <param name="sql">SQL脚本。</param>
/// <param name="cancellationToken">取消标记。</param>
/// <returns>返回模型实例列表。</returns>
protected async Task <IEnumerable <TModel> > LoadAsync(SqlScript sql, CancellationToken cancellationToken = new CancellationToken())
{
var models = new List <TModel>();
using (var reader = await _db.ExecuteReaderAsync(sql.ToString(), cancellationToken: cancellationToken))
{
while (await reader.ReadAsync(cancellationToken))
{
models.Add(Entity.Read <TModel>(reader));
}
}
return(models);
}
/// <summary>
/// 读取模型实例列表。
/// </summary>
/// <param name="sql">SQL脚本。</param>
/// <returns>返回模型实例列表。</returns>
protected IEnumerable <TModel> Load(SqlScript sql)
{
var models = new List <TModel>();
using (var reader = _db.ExecuteReader(sql.ToString()))
{
while (reader.Read())
{
models.Add(Entity.Read <TModel>(reader));
}
}
return(models);
}
