public static Object getStudentForId(int id)
{
Student student = null;
try
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
String sqlQuery = "SELECT * FROM [dbo].[student] WHERE ID = " + id;
using (SqlCommand command = new SqlCommand(sqlQuery, connection))
{
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
Console.Write(reader.GetString(1));
student = StudentUtility.getStudentFormReader(reader);
}
}
}
}
}
catch (SqlException e)
{
return(e);
}
catch (InvalidOperationException e)
{
return(e);
}
catch (InvalidCastException e)
{
return(e);
}
catch (Exception e) {
return(e);
}
if (null != student)
{
return(student);
}
else
{
return(new Exception("Student Not Found"));
}
}
public static Object insertStudentActivity(StudentActivities activity)
{
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
// define INSERT query with parameters
string query = "INSERT INTO " + STUDENT_ACTIVITIES_TABLE + " ("
+ ACTIVITY_TYPE_ID + "," + STUDENT_ID + "," + COMMENT + "," + CONTENT + ","
+ ACTION_TIME + "," + CREATED_ON + "," + UPDATED_ON + ","
+ IS_DONE + ")" +
" VALUES (@activityTypeId, @studentId, @Comment, @Content," +
" @actionTime, @createdOn, @updatedOn," +
" @isDone); " +
" SELECT CAST(scope_identity() AS int)";
try
{
//create connection and command
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(query, cn))
{
long milliseconds = DateTimeOffset.Now.ToUnixTimeMilliseconds();
// define parameters and their values
cmd.Parameters.Add("@activityTypeId", SqlDbType.NVarChar, 50).Value = activity.ActivityTypeId ?? (object)DBNull.Value;
cmd.Parameters.Add("@studentId", SqlDbType.NVarChar, 50).Value = activity.StudentId ?? (object)DBNull.Value;
cmd.Parameters.Add("@Comment", SqlDbType.NVarChar, 50).Value = activity.Comment ?? (object)DBNull.Value;
cmd.Parameters.Add("@Content", SqlDbType.NVarChar, 50).Value = activity.Content ?? (object)DBNull.Value;
cmd.Parameters.Add("@actionTime", SqlDbType.NVarChar, 50).Value = activity.ActionTime ?? (object)DBNull.Value;
cmd.Parameters.Add("@createdOn", SqlDbType.NVarChar, 50).Value = milliseconds;
cmd.Parameters.Add("@updatedOn", SqlDbType.NVarChar, 50).Value = milliseconds;
cmd.Parameters.Add("@isDone", SqlDbType.Bit, 50).Value = activity.IsDone ?? false;
int newID;
cn.Open();
newID = (int)cmd.ExecuteScalar();
cn.Close();
activity.Id = newID;
return(activity);
}
}
catch (SqlException e) { return(e); }
catch (InvalidOperationException e) { return(e); }
catch (InvalidCastException e) { return(e); }
catch (Exception e) { return(e); }
}
}
public static Object updateGroup(Group group)
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
long milliseconds = DateTimeOffset.Now.ToUnixTimeMilliseconds();
string query = "UPDATE " + GROUPS_TABLE + " SET "
+ TITLE + " = @title, "
+ DETAILS + " = @details, "
+ CREATED_ON + " = @createdOn, "
+ UPDATED_ON + " = @updatedOn, "
+ IS_VIRTUALLY_DELETED + " = @isVirtuallyDeleted WHERE " + ID + " = @id ;";
try
{
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(query, cn))
{
cmd.Parameters.Add("@details", SqlDbType.NVarChar, 50).Value = group.Details ?? (object)DBNull.Value;
cmd.Parameters.Add("@createdOn", SqlDbType.NVarChar, 50).Value = group.CreatedOn ?? (object)DBNull.Value;
cmd.Parameters.Add("@updatedOn", SqlDbType.NVarChar, 50).Value = milliseconds;
cmd.Parameters.Add("@isVirtuallyDeleted", SqlDbType.Bit, 50).Value = group.IsVirtuallyDeleted;
cmd.Parameters.Add("@id", SqlDbType.Int).Value = group.Id;
cn.Open();
int result = cmd.ExecuteNonQuery();
cn.Close();
if (result > 0)
{
return(group);
}
else
{
return(new Exception("Group not found for given id " + result));
}
}
}
catch (SqlException e) { return(e); }
catch (InvalidOperationException e) { return(e); }
catch (InvalidCastException e) { return(e); }
catch (Exception e) { return(e); }
}
public static Object getStudents()
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
List <Student> studentList = null;
using (SqlConnection connection = new SqlConnection(connectionString)) {
String sqlQuery = "SELECT * FROM [dbo].[student]";
try
{
connection.Open();
using (SqlCommand command = new SqlCommand(sqlQuery, connection))
{
studentList = new List <Student>();
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
Console.Write(reader.GetString(1));
Student student = StudentUtility.getStudentFormReader(reader);
studentList.Add(student);
}
}
}
}
catch (InvalidOperationException e)
{
return(e);
}
catch (SqlException e)
{
return(e);
}
catch (Exception e)
{
return(e);
}
}
return(studentList);
}
public static Object insertGroup(Group group)
{
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
long milliseconds = DateTimeOffset.Now.ToUnixTimeMilliseconds();
string query = "INSERT INTO " + GROUPS_TABLE + " ("
+ TITLE + "," + DETAILS + "," + CREATED_ON + "," + UPDATED_ON + ","
+ IS_VIRTUALLY_DELETED + ")" +
" VALUES (@title, @details, @createdOn, @updatedOn," +
" @isVirtuallyDeleted); " +
" SELECT CAST(scope_identity() AS int)";
try
{
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(query, cn))
{
cmd.Parameters.Add("@title", SqlDbType.NVarChar, 50).Value = group.Title ?? (object)DBNull.Value;
cmd.Parameters.Add("@details", SqlDbType.NVarChar, 50).Value = group.Details ?? (object)DBNull.Value;
cmd.Parameters.Add("@createdOn", SqlDbType.NVarChar, 50).Value = milliseconds;
cmd.Parameters.Add("@updatedOn", SqlDbType.NVarChar, 50).Value = milliseconds;
cmd.Parameters.Add("@isVirtuallyDeleted", SqlDbType.Bit, 50).Value = group.IsVirtuallyDeleted;
int newID;
cn.Open();
newID = (int)cmd.ExecuteScalar();
cn.Close();
group.Id = newID;
return(group);
}
}
catch (SqlException e) { return(e); }
catch (InvalidOperationException e) { return(e); }
catch (InvalidCastException e) { return(e); }
catch (Exception e) { return(e); }
}
}
public static Object updateStudent(Student student)
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
string query = "UPDATE " + STUDENT_TABLE + " SET "
+ FORM_1_ENTITY_1 + " = @form1entity1, "
+ FORM_1_ENTITY_2 + " = @form1entity2, "
+ FORM_1_ENTITY_3 + " = @form1entity3, "
+ FORM_1_ENTITY_4 + " = @form1entity4, "
+ FORM_2_ENTITY_1_ID + " = @form2entity1Id, "
+ FORM_2_ENTITY_2_ID + " = @form2entity2Id, "
+ FORM_2_ENTITY_3_ID + " = @form2entity3Id, "
+ FORM_2_ENTITY_4_ID + " = @form2entity4Id, "
+ FORM_3_ENTITY_1_ID + " = @form3entity1Id, "
+ FORM_3_ENTITY_2_ID + " = @form3entity2Id, "
+ FORM_3_ENTITY_3_ID + " = @form3entity3Id, "
+ FORM_3_ENTITY_4_ID + " = @form3entity4Id, "
+ FORM_3_ENTITY_5 + " = @form3entity5, "
+ FORM_3_ENTITY_6 + " = @form3entity6, "
+ FORM_3_ENTITY_7 + " = @form3entity7, "
+ FORM_4_ENTITY_1_ID + " = @form4entity1Id, "
+ FORM_4_ENTITY_2_ID + " = @form4entity2Id, "
+ FORM_4_ENTITY_3_ID + " = @form4entity3Id, "
+ FORM_4_ENTITY_4_ID + " = @form4entity4Id, "
+ FORM_4_ENTITY_5 + " = @form4entity5, "
+ FORM_4_ENTITY_6 + " = @form4entity6, "
+ FORM_4_ENTITY_7 + " = @form4entity7, "
+ IS_VIRTUALLY_DELETED + " = @isVirtuallyDeleted WHERE " + ID + " = @id ;";
try
{
//create connection and command
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(query, cn))
{
// define parameters and their values
cmd.Parameters.Add("@form1entity1", SqlDbType.NVarChar, 50).Value = student.Form1Entity1 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form1entity2", SqlDbType.NVarChar, 50).Value = student.Form1Entity2 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form1entity3", SqlDbType.NVarChar, 50).Value = student.Form1Entity3 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form1entity4", SqlDbType.NVarChar, 50).Value = student.Form1Entity4 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity1Id", SqlDbType.Int).Value = student.Form2Entity1Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity2Id", SqlDbType.Int).Value = student.Form2Entity2Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity3Id", SqlDbType.Int).Value = student.Form2Entity3Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity4Id", SqlDbType.Int).Value = student.Form2Entity4Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity1Id", SqlDbType.Int).Value = student.Form3Entity1Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity2Id", SqlDbType.Int).Value = student.Form3Entity2Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity3Id", SqlDbType.Int).Value = student.Form3Entity3Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity4Id", SqlDbType.Int).Value = student.Form3Entity4Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity5", SqlDbType.NVarChar, 50).Value = student.Form3Entity5 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity6", SqlDbType.NVarChar, 50).Value = student.Form3Entity6 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity7", SqlDbType.NVarChar, 50).Value = student.Form3Entity7 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity1Id", SqlDbType.Int).Value = student.Form4Entity1Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity2Id", SqlDbType.Int).Value = student.Form4Entity2Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity3Id", SqlDbType.Int).Value = student.Form4Entity3Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity4Id", SqlDbType.Int).Value = student.Form4Entity4Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity5", SqlDbType.NVarChar, 50).Value = student.Form4Entity5 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity6", SqlDbType.NVarChar, 50).Value = student.Form4Entity6 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity7", SqlDbType.NVarChar, 50).Value = student.Form4Entity7 ?? (object)DBNull.Value;
cmd.Parameters.Add("@isVirtuallyDeleted", SqlDbType.Bit).Value = student.IsVirtuallyDeleted;
cmd.Parameters.Add("@id", SqlDbType.Int).Value = student.Id;
cn.Open();
int result = cmd.ExecuteNonQuery();
cn.Close();
if (result > 0)
{
return(student);
}
else
{
return(new Exception("Student not found for given id " + result));
}
}
}
catch (SqlException e)
{
return(e);
}
catch (InvalidOperationException e)
{
return(e);
}
catch (InvalidCastException e)
{
return(e);
}
catch (Exception e)
{
return(e);
}
}
public static Object insertStudent(Student student)
{
{
String connectionString = DatabaseConnections.getConnectionString("NARAYANA_CLIENT");
// define INSERT query with parameters
string query = "INSERT INTO " + STUDENT_TABLE + " ("
+ FORM_1_ENTITY_1 + "," + FORM_1_ENTITY_2 + "," + FORM_1_ENTITY_3 + "," + FORM_1_ENTITY_4 + ","
+ FORM_2_ENTITY_1_ID + "," + FORM_2_ENTITY_2_ID + "," + FORM_2_ENTITY_3_ID + "," + FORM_2_ENTITY_4_ID + ","
+ FORM_3_ENTITY_1_ID + "," + FORM_3_ENTITY_2_ID + "," + FORM_3_ENTITY_3_ID + "," + FORM_3_ENTITY_4_ID + "," + FORM_3_ENTITY_5 + "," + FORM_3_ENTITY_6 + "," + FORM_3_ENTITY_7 + ","
+ FORM_4_ENTITY_1_ID + "," + FORM_4_ENTITY_2_ID + "," + FORM_4_ENTITY_3_ID + "," + FORM_4_ENTITY_4_ID + "," + FORM_4_ENTITY_5 + "," + FORM_4_ENTITY_6 + "," + FORM_4_ENTITY_7 + ","
+ IS_VIRTUALLY_DELETED + ")" +
" VALUES (@form1entity1, @form1entity2, @form1entity3, @form1entity4," +
" @form2entity1Id, @form2entity2Id, @form2entity3Id, @form2entity4Id," +
" @form3entity1Id, @form3entity2Id, @form3entity3Id, @form3entity4Id, @form3entity5, @form3entity6, @form3entity7," +
" @form4entity1Id, @form4entity2Id, @form4entity3Id, @form4entity4Id, @form4entity5, @form4entity6, @form4entity7," +
" @isVirtuallyDeleted); " +
" SELECT CAST(scope_identity() AS int)";
try
{
//create connection and command
using (SqlConnection cn = new SqlConnection(connectionString))
using (SqlCommand cmd = new SqlCommand(query, cn))
{
// define parameters and their values
cmd.Parameters.Add("@form1entity1", SqlDbType.NVarChar, 50).Value = student.Form1Entity1 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form1entity2", SqlDbType.NVarChar, 50).Value = student.Form1Entity2 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form1entity3", SqlDbType.NVarChar, 50).Value = student.Form1Entity3 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form1entity4", SqlDbType.NVarChar, 50).Value = student.Form1Entity4 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity1Id", SqlDbType.Int).Value = student.Form2Entity1Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity2Id", SqlDbType.Int).Value = student.Form2Entity2Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity3Id", SqlDbType.Int).Value = student.Form2Entity3Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form2entity4Id", SqlDbType.Int).Value = student.Form2Entity4Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity1Id", SqlDbType.Int).Value = student.Form3Entity1Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity2Id", SqlDbType.Int).Value = student.Form3Entity2Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity3Id", SqlDbType.Int).Value = student.Form3Entity3Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity4Id", SqlDbType.Int).Value = student.Form3Entity4Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity5", SqlDbType.NVarChar, 50).Value = student.Form3Entity5 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity6", SqlDbType.NVarChar, 50).Value = student.Form3Entity6 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form3entity7", SqlDbType.NVarChar, 50).Value = student.Form3Entity7 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity1Id", SqlDbType.Int).Value = student.Form4Entity1Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity2Id", SqlDbType.Int).Value = student.Form4Entity2Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity3Id", SqlDbType.Int).Value = student.Form4Entity3Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity4Id", SqlDbType.Int).Value = student.Form4Entity4Id ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity5", SqlDbType.NVarChar, 50).Value = student.Form4Entity5 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity6", SqlDbType.NVarChar, 50).Value = student.Form4Entity6 ?? (object)DBNull.Value;
cmd.Parameters.Add("@form4entity7", SqlDbType.NVarChar, 50).Value = student.Form4Entity7 ?? (object)DBNull.Value;
cmd.Parameters.Add("@isVirtuallyDeleted", SqlDbType.Bit, 50).Value = student.IsVirtuallyDeleted;
int newID;
cn.Open();
newID = (int)cmd.ExecuteScalar();
cn.Close();
student.Id = newID;
return(student);
}
}
catch (SqlException e)
{
return(e);
}
catch (InvalidOperationException e)
{
return(e);
}
catch (InvalidCastException e)
{
return(e);
}
catch (Exception e)
{
return(e);
}
}
}
