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DB.cs
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DB.cs
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/**
* Author: Riccardo Bicelli <[email protected]>>
* Created: 28.02.2020
*
* (c) Copyright Riccardo Bicelli.
**/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Diagnostics;
namespace LabelSpooler
{
public static class DB
{
private static SqlConnection conn = new SqlConnection();
private static string _dbServer;
private static string _dbUsername;
private static string _dbDatabase;
private static string _dbPassword;
private static bool _logAlreadyLogged;
/* Properties */
public static string Server
{
get
{
return DB._dbServer;
}
set
{
DB._dbServer = value;
}
}
public static string Database
{
get
{
return DB._dbDatabase;
}
set
{
DB._dbDatabase = value;
}
}
public static string Username
{
get
{
return DB._dbUsername;
}
set
{
DB._dbUsername = value;
}
}
public static string Password
{
get
{
return DB._dbPassword;
}
set
{
DB._dbPassword = value;
}
}
/*End Properties*/
public static bool Connect()
{
DB.conn.ConnectionString = "Data Source=" + DB._dbServer + ";Initial Catalog=" + DB._dbDatabase + ";User id=" + DB._dbUsername + ";Password=" + DB._dbPassword;
try
{
DB.conn.Open();
DB.conn.Close();
return true;
}
catch (SqlException ex)
{
return false;
}
catch (Exception ex)
{
return false;
}
}
public static DataTable GetJobs(int jobStatus = 0)
{
SqlCommand sqlCommand = new SqlCommand();
sqlCommand.Connection = DB.conn;
DataTable dataTable = new DataTable();
sqlCommand.Parameters.AddWithValue("@pJobStatus", (object)jobStatus);
if (jobStatus==0)
{
sqlCommand.Parameters.AddWithValue("@pPrintRetrySeconds", (object)Globals.printRetrySeconds);
sqlCommand.CommandText = "SELECT * FROM LabelSpooler WHERE (JobStatus=@pJobStatus AND jobRetries=0) OR (JobStatus = @pJobStatus AND DATEDIFF(SECOND, jobLastSent, GETDATE()) >= @pPrintRetrySeconds) ORDER BY JobID";
}
else
sqlCommand.CommandText = "SELECT * FROM LabelSpooler WHERE JobStatus=@pJobStatus ORDER BY JobID";
try
{
DB.conn.Open();
SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();
dataTable.Load((IDataReader)sqlDataReader);
DB.conn.Close();
_logAlreadyLogged = false;
return dataTable;
}
catch (Exception ex)
{
if (_logAlreadyLogged==false) {
Globals.eventRecord("Error getting Jobs: " + ex.Message, EventLogEntryType.Error);
_logAlreadyLogged = true;
}
return dataTable;
}
}
public static bool UpdateJobStatus(long jobID, int jobStatus, int jobRetriesAdd=0)
{
string sCommand;
//if (jobRetriesAdd>0)
sCommand= "UPDATE LabelSpooler SET jobStatus=@jobStatus,jobRetries=jobRetries+@jobRetriesAdd,jobLastSent=GETDATE() WHERE jobID=@jobID";
//else
// sCommand = "UPDATE LabelSpooler SET jobStatus=@jobStatus,jobRetries=jobRetries+@jobRetriesAdd WHERE jobID=@jobID";
using (SqlCommand sqlCommand = new SqlCommand())
{
sqlCommand.Connection = DB.conn;
sqlCommand.CommandText = sCommand;
sqlCommand.Parameters.AddWithValue("@jobID", (object)jobID);
sqlCommand.Parameters.AddWithValue("@jobStatus", (object)jobStatus);
sqlCommand.Parameters.AddWithValue("@jobRetriesAdd", (object)jobRetriesAdd);
try
{
DB.conn.Open();
sqlCommand.ExecuteNonQuery();
DB.conn.Close();
return true;
}
catch (SqlException ex)
{
if (DB.conn.State == ConnectionState.Open) DB.conn.Close();
Globals.eventRecord("Error Updating Job Status: (" + ex.Number + ") " + ex.Message, EventLogEntryType.Error);
return false;
}
}
}
public static int PurgeJobs(int minutesLimit)
{
//Delete
string sCommand;
int retRows;
sCommand = "DELETE FROM LabelSpooler WHERE JobStatus=1 AND DATEDIFF(MINUTE,JobCreated,GETDATE())>=@minutesLimit";
using (SqlCommand sqlCommand = new SqlCommand())
{
sqlCommand.Connection = DB.conn;
sqlCommand.CommandText = sCommand;
sqlCommand.Parameters.AddWithValue("@minutesLimit", (object)minutesLimit);
try
{
DB.conn.Open();
retRows = sqlCommand.ExecuteNonQuery();
DB.conn.Close();
return retRows;
}
catch (SqlException ex)
{
if (DB.conn.State == ConnectionState.Open) DB.conn.Close();
Globals.eventRecord("Error Purging Jobs Status: (" + ex.Number + ") " + ex.Message, EventLogEntryType.Error);
return -1;
}
}
}
}
}