public bool Insert <T>(T t) where T : BaseModel, new()
{
if (!t.ValidataModel())
{
throw new Exception("数据验证失败");
}
Type type = typeof(T);
//string columnStrings = string.Join(",", type.GetPropertiesWithNoKey().Select(p => $"[{p.GetMappingName()}]"));
//string valueStrings = string.Join(",", type.GetPropertiesWithNoKey().Select(p => $"@{p.GetMappingName()}"));
// 泛型缓存
//string sql = $"insert into [{type.Name}] ({columnStrings}) values ({valueStrings})";
string sql = SqlCacheBuilder <T> .GetSql(SqlCacheBuilderType.Insert);
//参数化
var sqlParameters = type.GetProperties().Select(p => new SqlParameter($"@{p.GetMappingName()}", p.GetValue(t) ?? DBNull.Value)).ToArray();
return(this.ExceuteSql <bool>(sql, sqlParameters, sqlCommand => 1 == sqlCommand.ExecuteNonQuery()));
//using(SqlConnection connection = new SqlConnection(configuationmanager))
//{
// SqlCommand command = new SqlCommand(sql, connection);
// command.Parameters.AddRange(parameters);
// connection.Open();
// int result = command.ExecuteNonQuery();
// return result == 1;
//}
}
//private static string configuationmanager = ConfigurationManager.SqlConnectionStringWrite;
/// <summary>
/// 泛型完成通类
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public T Find <T>(int id) where T : BaseModel, new()
{
Type type = typeof(T);
//string colunmString = string.Join(",", type.GetProperties().Select(p => $"[{ p.GetMappingName()}]"));
//string sql = $@"SELECT {colunmString} FROM [{type.GetMappingName()}] where id =@id";
SqlParameter[] sqlParameters = new SqlParameter[] { new SqlParameter("@id", id) };
string sql = SqlCacheBuilder <T> .GetSql(SqlCacheBuilderType.FindOne);
return(this.ExceuteSql <T>(sql, sqlParameters, sqlCommand => {
var reader = sqlCommand.ExecuteReader();
if (reader.Read())
{
T t = Activator.CreateInstance <T>();
foreach (var prop in type.GetProperties())
{
prop.SetValue(t, reader[prop.GetMappingName()] is DBNull ? null : reader[prop.GetMappingName()]);
}
return t;
}
else
{
return null;
}
}, SqlConnectionStringPool.DBOperateType.Read));
//using (SqlConnection connection = new SqlConnection(configuationmanager))
//{
// var command = connection.CreateCommand();
// SqlParameter[] para = new SqlParameter[1];
// para[0] = new SqlParameter("@id", id);
// command.CommandText = sql;
// command.Parameters.AddRange(para);
// connection.Open();
// var reader = command.ExecuteReader();
// if (reader.Read())
// {
// T t = Activator.CreateInstance<T>();
// foreach(var prop in type.GetProperties())
// {
// prop.SetValue(t, reader[prop.GetMappingName()] is DBNull? null: reader[prop.GetMappingName()]);
// }
// return t;
// }
//}
}
public bool Delete <T>(T t) where T : BaseModel, new()
{
Type type = typeof(T);
//string sql = $"Delete from [{type.GetMappingName()}] where Id=@id";
string sql = SqlCacheBuilder <T> .GetSql(SqlCacheBuilderType.Delete);
SqlParameter[] sqlParameters = new SqlParameter[] { new SqlParameter("@id", t.Id) };
return(this.ExceuteSql <bool>(sql, sqlParameters, sqlCommand => 1 == sqlCommand.ExecuteNonQuery()));
//using (SqlConnection connection = new SqlConnection(configuationmanager))
//{
// SqlCommand command = new SqlCommand(sql, connection);
// command.Parameters.AddRange(sqlParameters);
// connection.Open();
// int result = command.ExecuteNonQuery();
// return result == 1;
//}
}
