/// <summary>
/// 插入实体
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public bool Insert(T entity)
{
if (!entity.Validate())
{
throw new Exception("验证未通过");
}
var type = typeof(T);
var props = type.GetProperties().NoKey();
var sql = SqlBulider <T> .GetSql(SqlType.Insert);
var parameters = props.Select(a => new SqlParameter($"@{a.GetName<MyPropertyAttribute>()}", a.GetValue(entity) ?? DBNull.Value)).ToArray();
return(ExecuteSql <bool>(sql, parameters, SqlConnectionType.Write, command =>
{
return command.ExecuteNonQuery() > 0;
}));
#region 封装前
//using (SqlConnection conn = new SqlConnection(_connStr))
//{
// conn.Open();
// var command = new SqlCommand(sql, conn);
// foreach (var prop in props)
// {
// var name = prop.GetName<MyPropertyAttribute>();
// command.Parameters.Add(new SqlParameter($"@{name}", prop.GetValue(entity)));
// }
// isSuccess = command.ExecuteNonQuery() > 0;
//}
//return isSuccess;
#endregion
}
/// <summary>
/// 更新实体
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public bool Update(T entity)
{
var type = typeof(T);
var props = type.GetProperties();
var sql = SqlBulider <T> .GetSql(SqlType.Update);
var parameters = props.Select(a => new SqlParameter($"@{a.GetName<MyPropertyAttribute>()}", a.GetValue(entity) ?? DBNull.Value)).ToArray();
return(ExecuteSql(sql, parameters, SqlConnectionType.Write, command =>
{
return command.ExecuteNonQuery() > 0;
}));
}
/// <summary>
/// 删除实体
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool Delete(int id)
{
var type = typeof(T);
var sql = SqlBulider <T> .GetSql(SqlType.Delete);
var parameters = new List <SqlParameter>()
{
new SqlParameter($"@{SqlBulider<T>.KeyName}", id)
};
return(ExecuteSql(sql, parameters.ToArray(), SqlConnectionType.Write, command =>
{
return command.ExecuteNonQuery() > 0;
}));
}
/// <summary>
/// 查找实体
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public T Find(int id)
{
var type = typeof(T);
var sql = SqlBulider <T> .GetSql(SqlType.Find);
var parameters = new List <SqlParameter>()
{
new SqlParameter($"@{SqlBulider<T>.KeyName}", id)
};
return(ExecuteSql(sql, parameters.ToArray(), SqlConnectionType.Read, command =>
{
var reader = command.ExecuteReader();
return ConvertEntity(reader);
}));
#region 封装前
//using (SqlConnection conn = new SqlConnection(_connStr))
//{
// conn.Open();
// var command = new SqlCommand(sql, conn);
// command.Parameters.Add(new SqlParameter($"@{SqlBulider<T>.KeyName}", id));
// var reader = command.ExecuteReader();
// if (reader.Read())
// {
// var entity = new T();
// var props = type.GetProperties();
// foreach (var prop in props)
// {
// prop.SetValue(entity, reader[prop.Name]);
// }
// return entity;
// }
//}
//return default;
#endregion
}