private IActionResult CheckFlag(DBQueryStatus flag, bool isSingleRequest, string info)
{
switch (flag)
{
case DBQueryStatus.INTERNAL_ERROR: return(DatabaseError(ServerAction.General_ViewStudent, string.Join("", info, ":", flag)));
case DBQueryStatus.MORE_RESULTS:
if (isSingleRequest)
{
DatabaseError(ServerAction.General_ViewStudent, string.Join("", info, ":", flag));
}
return(null);
default: return(null);
}
}
public static DBQueryStatus CreateData <T>(T data, out T dataOut) where T : DataTableObject <T>, new()
{
DataBaseIO output = new DataBaseIO();
data.ObjectId = Cryptography.RandomString(10, false);
data.WriteObject(output, false);
DBQueryStatus rst = _DBRequestInternal(data.Table, DBVerbs.Create, null, output, out DataBaseIO[] inputs);
if (rst == DBQueryStatus.INTERNAL_ERROR)
{
dataOut = null;
return(rst);
}
T t = new T();
t.ReadFields(inputs[0]);
dataOut = t;
return(rst);
}
private void CheckMyStudents_Shown(object sender, EventArgs e)
{
if (CurrentUser.UserGroup.IsBusManager)
{
SchoolBusObject busObject = new SchoolBusObject();
DBQueryStatus resultX = DataBaseOperation.QueryMultipleData <SchoolBusObject>(new DBQuery().WhereEqualTo("TeacherObjectID", CurrentUser.ObjectId), out List <SchoolBusObject> result);
switch (resultX)
{
case DBQueryStatus.NO_RESULTS:
MessageBox.Show("没有找到你管理的校车");
return;
case DBQueryStatus.ONE_RESULT:
break;
case DBQueryStatus.MORE_RESULTS:
MessageBox.Show("找到了多个和你绑定的校车(这不可能……)，目前只会显示其中第一项");
break;
default: { MessageBox.Show("出现内部错误：" + resultX.ToString()); return; }
}
busObject = result[0];
myID.Text = busObject.ObjectId;
myDirection.Text = busObject.BusName;
LeavingChecked.Text = busObject.LSChecked.ToString();
ExpNumber.Text = "尚未加载";
BackNumber.Text = "尚未加载";
ExDescription.Text = "加载完成";
Application.DoEvents();
StudentDataGrid.AutoResizeColumns();
}
else if (CurrentUser.UserGroup.IsAdmin)
{
MessageBox.Show("管理员用户请到管理页面进行查询和修改记录", "管理员通知", MessageBoxButtons.OK);
}
else
{
MessageBox.Show("你不是校车老师，只有校车老师和管理员能编辑数据", "只读模式", MessageBoxButtons.OK);
Close();
}
}
private void LoadAll_Click(object sender, EventArgs e)
{
studentDataObjectBindingSource.Clear();
DBQuery query = new DBQuery();
query.WhereEqualTo("BusID", myID.Text);
DBQueryStatus resultX = DataBaseOperation.QueryMultipleData <StudentObject>(query, out List <StudentObject> result);
if (resultX >= 0)
{
foreach (StudentObject item in result)
{
studentDataObjectBindingSource.Add(item);
}
ExpNumber.Text = result.Count.ToString();
LeaveNumber.Text = CountTicks(4).ToString();
LeavingChecked.Text = CountTicks(5).ToString();
BackNumber.Text = CountTicks(6).ToString();
}
StudentDataGrid.AutoResizeColumns();
}
public static DBQueryStatus QueryMultiple <T>(DBQuery query, out List <T> Result, int queryLimit = 1000, int skip = 0) where T : DataTableObject <T>, new()
{
query.Limit(query._Limit == -1 ? queryLimit : query._Limit);
query.Skip(query._Skip == -1 ? skip : query._Skip);
DBQueryStatus databaseOperationResult = _DBRequestInternal(new T().Table, DBVerbs.QueryMulti, query, null, out DataBaseIO[] inputs);
if (databaseOperationResult >= 0)
{
Result = new List <T>();
foreach (DataBaseIO item in inputs)
{
T t = new T();
t.ReadFields(item);
Result.Add(t);
}
}
else
{
Result = null;
}
return(databaseOperationResult);
}
public DBBackupStatusNotifyer(DBQueryStatus dbQueryStatus, int interval)
: base(interval)
{
_dbQueryStatus = dbQueryStatus;
}
private void LoadExistStudents_Click(object sender, EventArgs e)
{
StudentData.Enabled = false;
studentDataBindSourc.Clear();
DBQuery ClassQuery = new DBQuery();
ClassQuery.WhereEqualTo("objectId", CurrentUser.ClassList[0]);
DBQueryStatus resultCode = DataBaseOperation.QueryMultipleData <ClassObject>(ClassQuery, out List <ClassObject> result);
if (resultCode <= 0)
{
MessageBox.Show("没找到你想要的班级，这，，不应该吧。", "很失望？");
return;
}
CurrentClass = result[0];
ClsID.Text = CurrentClass.ObjectId;
ClsDpt.Text = CurrentClass.CDepartment;
ClsGrade.Text = CurrentClass.CGrade;
ClsNum.Text = CurrentClass.CNumber;
ClsTID.Text = CurrentClass.TeacherID;
if (string.IsNullOrEmpty(CurrentClass.TeacherID))
{
MessageBox.Show("嗯，找到了匹配的班级，但好像没有老师绑定这个班。" +
"\r\n" +
"~快去叫他使用小板凳吧。" +
"\r\n\r\n" +
"如果你是这个班的老师的话，先去\"设置\"页绑定一下你的班级！", "孤儿班级");
ClsTName.Text = "";
ClsTPhoneNum.Text = "";
}
else
{
DBQuery TeacherDataQuery = new DBQuery();
TeacherDataQuery.WhereEqualTo("objectId", CurrentClass.TeacherID);
if (DataBaseOperation.QueryMultipleData(TeacherDataQuery, out List <UserObject> teacherresult) <= 0)
{
MessageBox.Show("这不应该，这个班级有老师管理，但是查不到老师的任何信息。", "班主任溜了？");
ClsTName.Text = "";
ClsTPhoneNum.Text = "";
}
else
{
ClsTName.Text = teacherresult[0].RealName;
ClsTPhoneNum.Text = teacherresult[0].PhoneNumber;
}
}
Application.DoEvents();
//if (MessageBox.Show("找到了班级，是否继续列出班里坐校车的学生？", "要继续吗", MessageBoxButtons.YesNo) == DialogResult.No)
// return;
DBQuery StudentsQuery = new DBQuery();
StudentsQuery.WhereEqualTo("ClassID", CurrentClass.ObjectId);
if (DataBaseOperation.QueryMultipleData(StudentsQuery, out List <StudentObject> results) <= 0)
{
MessageBox.Show("把数据库翻了个底朝天，还是没有这个班的学生", "学生去哪了？");
}
else
{
for (int i = 0; i < results.Count; i++)
{
studentDataBindSourc.Add(results[i]);
if (!BusDataPair.ContainsValue(results[i].BusID))
{
MessageBox.Show("这就奇怪了，为啥校车列表里面没有这个学生的记录？？" +
$"\r\n 学生姓名：{results[i].StudentName }" +
$" 奇怪的ID：{ results[i].BusID }");
StudentData.Rows[i].Cells[2].Value = "";
}
else
{
StudentData.Rows[i].Cells[2].Value = BusDataPair.ElementAt(BusDataPair.Values.ToList().IndexOf(results[i].BusID)).Key;
}
}
}
DoLog($"成功加载了 {results.Count} 条数据");
StudentData.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.AllCells);
StudentData.Enabled = true;
}
public DBRestoreStatusNotifyer(DBQueryStatus dbQueryStatus, int interval)
: base(interval)
{
_dbQueryStatus = dbQueryStatus;
}
public static DBQueryStatus DeleteData(string Table, string ObjectID)
{
DBQueryStatus result = _DBRequestInternal(Table, DBVerbs.Delete, new DBQuery().WhereEqualTo("objectId", ObjectID), null, out DataBaseIO[] inputs);
return(result);
}