public void parse(DataGridView data_grid, table source_table)
{
string table_name = source_table.get_name();
switch (table_name)
{
case "Студент": student(data_grid, source_table); break;
case "Преподаватель": teacher(data_grid, source_table); break;
case "Предмет": subject(data_grid, source_table); break;
case "Успеваемость": academic_progress(data_grid, source_table); break;
case "Группа": group(data_grid, source_table); break;
case "Деканат": deanery(data_grid, source_table); break;
case "Специальность": specialty(data_grid, source_table); break;
case "Факультет": faculty(data_grid, source_table); break;
case "Запрос успеваемости": request_rating(data_grid, source_table); break;
default: break;
}
}
void student(DataGridView data_grid, table source_table)
{
source_table.clear();
for (int i = 0, n_raw = data_grid.RowCount - 1; i < n_raw; ++i)
{
bool error = false;
string[] arg = new string[data_grid.ColumnCount];
for (int j = 0, n_columns = data_grid.ColumnCount; j < n_columns; ++j)
{
if (j == 4)
{
string key = table_group.instanse().find(Convert.ToString(data_grid[j, i].Value), 1, 0);
if (key != "%undef%")
{
arg[j] = key;
}
else
{
error = true;
}
}
else
{
arg[j] = Convert.ToString(data_grid[j, i].Value);
}
}
if (!error)
{
source_table.add_record(arg);
}
}
}
public key_table_field(string new_name, table new_table, int new_index)
{
name = new_name;
related_table = new_table;
index = new_index;
type = "str";
}
private void callback_group(string group)
{
this.Enabled = true;
if (group != "%error%")
{
table result = main_mngr.find_by_value(group, request_contr.by_value.group);
display(result);
}
}
private void callback_specialty(string specialty)
{
this.Enabled = true;
if (specialty != "%error%")
{
table result = main_mngr.find_by_value(specialty, request_contr.by_value.specialty);
display(result);
}
}
protected void find(table search_table, int index, string value)
{
search_table.Reset();
int n = search_table.get_columns().Count;
foreach (table_record record in search_table)
{
if (record[index].get_value() == value)
{
string[] arg = record.get_values();
result.add_record(arg);
}
}
}
void faculty(DataGridView data_grid, table source_table)
{
source_table.clear();
for (int i = 0, n_raw = data_grid.RowCount - 1; i < n_raw; ++i)
{
string[] arg = new string[data_grid.ColumnCount];
for (int j = 0, n_columns = data_grid.ColumnCount; j < n_columns; ++j)
{
arg[j] = Convert.ToString(data_grid[j, i].Value);
}
source_table.add_record(arg);
}
}
private void read(string file_name, table new_table)
{
new_table.clear();
FileStream file = new FileStream(file_name, FileMode.Open, FileAccess.Read);
StreamReader reader = new StreamReader(file);
string str;
while ((str = reader.ReadLine()) != null)
{
string[] elements = str.Split(';');
if (elements.Count <string>() > 1)
{
new_table.add_record(elements);
}
}
}
void academic_progress(DataGridView data_grid, table source_table)
{
source_table.clear();
for (int i = 0, n_raw = data_grid.RowCount - 1; i < n_raw; ++i)
{
bool error = false;
string[] arg = new string[data_grid.ColumnCount];
for (int j = 0, n_columns = data_grid.ColumnCount; j < n_columns; ++j)
{
//if (j == 0) {
// string key = table_student.instanse().find(Convert.ToString(data_grid[j, i].Value), 1, 0);
// if (key != "%undef%") arg[j] = key;
// else error = true;
//}
if (j == 1)
{
string key = table_subject.instanse().find(Convert.ToString(data_grid[j, i].Value), 1, 0);
if (key != "%undef%")
{
arg[j] = key;
}
else
{
error = true;
}
}
//else if (j == 5) {
// string key = table_teacher.instanse().find(Convert.ToString(data_grid[j, i].Value), 1, 0);
// if (key != "%undef%") arg[j] = key;
// else error = true;
//}
else
{
arg[j] = Convert.ToString(data_grid[j, i].Value);
}
}
if (!error)
{
source_table.add_record(arg);
}
}
}
private void button4_Click(object sender, EventArgs e)
{
label_for_student.Text = "";
if (data_grid.SelectedRows.Count > 0 && current_table != null)
{
if (current_table.get_name() == "Студент")
{
int index = data_grid.SelectedRows[0].Index;
label_for_student.Text = Convert.ToString(data_grid[1, index].Value) + " ";
label_for_student.Text += Convert.ToString(data_grid[2, index].Value) + " ";
label_for_student.Text += Convert.ToString(data_grid[3, index].Value) + " ";
label_for_student.Text += Convert.ToString(data_grid[4, index].Value);
string str = Convert.ToString(data_grid[0, index].Value);
table current_table = main_mngr.find_by_value(str, request_contr.by_value.rating);
display(current_table);
}
}
}
public override table execute(object value)
{
// the first step
List <string> columns = table_group.instanse().get_columns();
result = new table_custom(Convert.ToString(value), columns);
int index;
for (index = 0; index < columns.Count; ++index)
{
if (columns[index] == "Код факультета")
{
break;
}
}
find(table_group.instanse(), index, Convert.ToString(value));
table group = result;
// the second step
columns = table_student.instanse().get_columns();
result = new table_custom(Convert.ToString(value), columns);
for (index = 0; index < columns.Count; ++index)
{
if (columns[index] == "Код группы")
{
break;
}
}
foreach (table_record record in group)
{
find(table_student.instanse(), index, record[1].get_value());
}
return(result);
}
private void write(string file_name, table new_table)
{
FileStream file = new FileStream(file_name, FileMode.Create);
StreamWriter writer = new StreamWriter(file);
foreach (table_record record in new_table)
{
bool flag = false;
foreach (table_field field in record)
{
if (flag)
{
writer.Write(";");
}
flag = true;
writer.Write(field.get_absolute_value());
}
writer.Write("\n");
}
writer.Close();
}
public void parse(DataGridView data_grid, table source_table)
{
parser.parse(data_grid, source_table);
}
private void студентыПоГруппамToolStripMenuItem_Click(object sender, EventArgs e)
{
table result = main_mngr.report_by_group();
display(result);
}
private void запросНаОтличниковToolStripMenuItem_Click(object sender, EventArgs e)
{
table result = main_mngr.find_by_rating(request_contr.by_rating._5);
display(result);
}
private void запросНаСтудентовСЧетверкамиИПятеркамиToolStripMenuItem_Click(object sender, EventArgs e)
{
table result = main_mngr.find_by_rating(request_contr.by_rating._4_and_5);
display(result);
}
private void display(table table_for_display)
{
clear_data_grid();
if (table_for_display.get_name() == "Студент")
{
rating_view.Enabled = true;
}
else
{
rating_view.Enabled = false;
}
if (table_for_display.get_name() != "Запрос успеваемости")
{
label_for_student.Text = "";
}
List <string> columns_name = table_for_display.get_columns();
current_table = table_for_display;
int column_width = (data_grid.Width - 70) / columns_name.Count();
int index = 1;
foreach (string name in columns_name)
{
var column = new DataGridViewColumn();
column.HeaderText = name;
if (index == columns_name.Count())
{
column.Width = column_width + (data_grid.Width - column_width * index);
}
else
{
column.Width = column_width;
}
//column.ReadOnly = true;
column.Name = name;
column.Frozen = true;
column.CellTemplate = new DataGridViewTextBoxCell();
column.SortMode = DataGridViewColumnSortMode.Programmatic;
data_grid.Columns.Add(column);
++index;
}
int index_raw = 0;
table_for_display.Reset();
foreach (table_record record in table_for_display)
{
data_grid.Rows.Add();
int index_column = 0;
foreach (table_field field in record)
{
data_grid[index_column++, index_raw].Value = field.get_value();
}
++index_raw;
}
}
void request_rating(DataGridView data_grid, table source_table)
{
var student = table_student.instanse();
int size = source_table.size();
if (size < 1)
{
return;
}
string index = source_table[0][0].get_absolute_value();
var rating = table_academic_progress.instanse();
List <table_record> to_delete = new List <table_record>();
rating.Reset();
foreach (table_record record in rating)
{
string n_index = record[0].get_value();
if (index == n_index)
{
to_delete.Add(record);
}
}
foreach (table_record record in to_delete)
{
rating.delete_record(record);
}
for (int i = 0, n_raw = data_grid.RowCount - 1; i < n_raw; ++i)
{
bool error = false;
string[] arg = new string[data_grid.ColumnCount];
for (int j = 0, n_columns = data_grid.ColumnCount; j < n_columns; ++j)
{
if (j == 1)
{
string key = table_subject.instanse().find(Convert.ToString(data_grid[j, i].Value), 1, 0);
if (key != "%undef%")
{
arg[j] = key;
}
else
{
error = true;
}
}
else
{
arg[j] = Convert.ToString(data_grid[j, i].Value);
}
}
if (!error)
{
rating.add_record(arg);
}
}
}
