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marechai/Cicm.Database/Operations/Computer.cs

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Add file headers.
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/******************************************************************************
// Canary Islands Computer Museum Website
// ----------------------------------------------------------------------------
//
// Filename : Computer.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// --[ Description ] ----------------------------------------------------------
//
// Contains operations to manage computers.
//
// --[ License ] --------------------------------------------------------------
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2003-2018 Natalia Portillo
*******************************************************************************/
Add XML documentation.
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using System;
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using System.Collections.Generic;
using System.Data;
using Cicm.Database.Schemas;
using Console = System.Console;
namespace Cicm.Database
{
public partial class Operations
{
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/// <summary>
/// Gets all computers
/// </summary>
/// <param name="entries">All computers</param>
/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetComputers(out List<Computer> entries)
{
#if DEBUG
Console.WriteLine("Getting all computers...");
#endif
try
{
const string SQL = "SELECT * from computers";
IDbCommand dbCmd = dbCon.CreateCommand();
IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
dbCmd.CommandText = SQL;
DataSet dataSet = new DataSet();
dataAdapter.SelectCommand = dbCmd;
dataAdapter.Fill(dataSet);
entries = ComputersFromDataTable(dataSet.Tables[0]);
return true;
}
catch(Exception ex)
{
Console.WriteLine("Error getting computers.");
Console.WriteLine(ex);
entries = null;
return false;
}
}
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/// <summary>
/// Gets all computers from specified company
/// </summary>
/// <param name="entries">All computers</param>
/// <param name="company">Company id</param>
/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
public bool GetComputers(out List<Computer> entries, int company)
{
#if DEBUG
System.Console.WriteLine("Getting all computers from company id {0}...", company);
#endif
try
{
const string SQL = "SELECT * from computers WHERE company = '{id}'";
IDbCommand dbCmd = dbCon.CreateCommand();
IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
dbCmd.CommandText = SQL;
DataSet dataSet = new DataSet();
dataAdapter.SelectCommand = dbCmd;
dataAdapter.Fill(dataSet);
entries = ComputersFromDataTable(dataSet.Tables[0]);
return true;
}
catch(Exception ex)
{
System.Console.WriteLine("Error getting computers.");
System.Console.WriteLine(ex);
entries = null;
return false;
}
}
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/// <summary>
/// Gets the specified number of computers since the specified start
/// </summary>
/// <param name="entries">List of computers</param>
/// <param name="start">Start of query</param>
/// <param name="count">How many entries to retrieve</param>
/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetComputers(out List<Computer> entries, ulong start, ulong count)
{
#if DEBUG
Console.WriteLine("Getting {0} computers from {1}...", count, start);
#endif
try
{
string sql = $"SELECT * FROM computers LIMIT {start}, {count}";
IDbCommand dbCmd = dbCon.CreateCommand();
IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
dbCmd.CommandText = sql;
DataSet dataSet = new DataSet();
dataAdapter.SelectCommand = dbCmd;
dataAdapter.Fill(dataSet);
entries = ComputersFromDataTable(dataSet.Tables[0]);
return true;
}
catch(Exception ex)
{
Console.WriteLine("Error getting computers.");
Console.WriteLine(ex);
entries = null;
return false;
}
}
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/// <summary>
/// Gets computer by specified id
/// </summary>
/// <param name="id">Id</param>
/// <returns>Computer with specified id, <c>null</c> if not found or error</returns>
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public Computer GetComputer(int id)
{
#if DEBUG
Console.WriteLine("Getting computer with id {0}...", id);
#endif
try
{
string sql = $"SELECT * from computers WHERE id = '{id}'";
IDbCommand dbCmd = dbCon.CreateCommand();
IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
dbCmd.CommandText = sql;
DataSet dataSet = new DataSet();
dataAdapter.SelectCommand = dbCmd;
dataAdapter.Fill(dataSet);
List<Computer> entries = ComputersFromDataTable(dataSet.Tables[0]);
return entries == null || entries.Count == 0 ? null : entries[0];
}
catch(Exception ex)
{
Console.WriteLine("Error getting computer.");
Console.WriteLine(ex);
return null;
}
}
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/// <summary>
/// Counts the number of computers in the database
/// </summary>
/// <returns>Entries in database</returns>
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public long CountComputers()
{
#if DEBUG
Console.WriteLine("Counting computers...");
#endif
IDbCommand dbcmd = dbCon.CreateCommand();
dbcmd.CommandText = "SELECT COUNT(*) FROM computers";
object count = dbcmd.ExecuteScalar();
dbcmd.Dispose();
try { return Convert.ToInt64(count); }
catch { return 0; }
}
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/// <summary>
/// Adds a new administrator to the database
/// </summary>
/// <param name="entry">Entry to add</param>
/// <param name="id">ID of added entry</param>
/// <returns><c>true</c> if added correctly, <c>false</c> otherwise</returns>
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public bool AddComputer(Computer entry, out long id)
{
#if DEBUG
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Console.Write("Adding computer `{0}`...", entry.Model);
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#endif
IDbCommand dbcmd = GetCommandComputer(entry);
IDbTransaction trans = dbCon.BeginTransaction();
dbcmd.Transaction = trans;
const string SQL =
"INSERT INTO computers (company, year, model, cpu1, mhz1, cpu2, mhz2, bits, ram, rom, gpu, vram, colors, res, spu, mpu, sound_channels, music_channels, hdd1, hdd2, hdd3, disk1, cap1, disk2, cap2, comment)" +
" VALUES (@company, @year, @model, @cpu1, @mhz1, @cpu2, @mhz2, @bits, @ram, @rom, @gpu, @vram, @colors, @res, @spu, @mpu, @sound_channels, @music_channels, @hdd1, @hdd2, @hdd3, @disk1, @cap1, @disk2, @cap2, @comment)";
dbcmd.CommandText = SQL;
dbcmd.ExecuteNonQuery();
trans.Commit();
dbcmd.Dispose();
id = dbCore.LastInsertRowId;
#if DEBUG
Console.WriteLine(" id {0}", id);
#endif
return true;
}
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/// <summary>
/// Updated a computer in the database
/// </summary>
/// <param name="entry">Updated entry</param>
/// <returns><c>true</c> if updated correctly, <c>false</c> otherwise</returns>
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public bool UpdateComputer(Computer entry)
{
#if DEBUG
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Console.WriteLine("Updating computer `{0}`...", entry.Model);
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#endif
IDbCommand dbcmd = GetCommandComputer(entry);
IDbTransaction trans = dbCon.BeginTransaction();
dbcmd.Transaction = trans;
string sql =
"UPDATE computers SET company = @company, year = @year, model = @model, cpu1 = @cpu1, mhz1 = @mhz1, cpu2 = @cpu2, " +
"mhz2 = @mhz2, bits = @bits, ram = @ram, rom = @rom, gpu = @gpu, vram = @vram, colors = @colors, res = @res, spu = @spu, mpu = @mpu " +
"sound_channels = @sound_channels, music_channels = @music_channels, hdd1 = @hdd1, hdd2 = @hdd2, hdd3 = @hdd3, disk1 = @disk1, cap1 = @cap1, disk2 = @disk2, cap2 = @cap2, comment = @comment " +
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$"WHERE id = {entry.Id}";
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dbcmd.CommandText = sql;
dbcmd.ExecuteNonQuery();
trans.Commit();
dbcmd.Dispose();
return true;
}
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/// <summary>
/// Removes a computer from the database
/// </summary>
/// <param name="id">ID of entry to remove</param>
/// <returns><c>true</c> if removed correctly, <c>false</c> otherwise</returns>
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public bool RemoveComputer(long id)
{
#if DEBUG
Console.WriteLine("Removing computer widh id `{0}`...", id);
#endif
IDbCommand dbcmd = dbCon.CreateCommand();
IDbTransaction trans = dbCon.BeginTransaction();
dbcmd.Transaction = trans;
string sql = $"DELETE FROM computers WHERE id = '{id}';";
dbcmd.CommandText = sql;
dbcmd.ExecuteNonQuery();
trans.Commit();
dbcmd.Dispose();
return true;
}
IDbCommand GetCommandComputer(Computer entry)
{
IDbCommand dbcmd = dbCon.CreateCommand();
IDbDataParameter param1 = dbcmd.CreateParameter();
IDbDataParameter param2 = dbcmd.CreateParameter();
IDbDataParameter param3 = dbcmd.CreateParameter();
IDbDataParameter param4 = dbcmd.CreateParameter();
IDbDataParameter param5 = dbcmd.CreateParameter();
IDbDataParameter param6 = dbcmd.CreateParameter();
IDbDataParameter param7 = dbcmd.CreateParameter();
IDbDataParameter param8 = dbcmd.CreateParameter();
IDbDataParameter param9 = dbcmd.CreateParameter();
IDbDataParameter param10 = dbcmd.CreateParameter();
IDbDataParameter param11 = dbcmd.CreateParameter();
IDbDataParameter param12 = dbcmd.CreateParameter();
IDbDataParameter param13 = dbcmd.CreateParameter();
IDbDataParameter param14 = dbcmd.CreateParameter();
IDbDataParameter param15 = dbcmd.CreateParameter();
IDbDataParameter param16 = dbcmd.CreateParameter();
IDbDataParameter param17 = dbcmd.CreateParameter();
IDbDataParameter param18 = dbcmd.CreateParameter();
IDbDataParameter param19 = dbcmd.CreateParameter();
IDbDataParameter param20 = dbcmd.CreateParameter();
IDbDataParameter param21 = dbcmd.CreateParameter();
IDbDataParameter param22 = dbcmd.CreateParameter();
IDbDataParameter param23 = dbcmd.CreateParameter();
IDbDataParameter param24 = dbcmd.CreateParameter();
IDbDataParameter param25 = dbcmd.CreateParameter();
IDbDataParameter param26 = dbcmd.CreateParameter();
param1.ParameterName = "@company";
param2.ParameterName = "@year";
param3.ParameterName = "@model";
param4.ParameterName = "@cpu1";
param5.ParameterName = "@mhz1";
param6.ParameterName = "@cpu2";
param7.ParameterName = "@mhz2";
param8.ParameterName = "@bits";
param9.ParameterName = "@ram";
param10.ParameterName = "@rom";
param11.ParameterName = "@gpu";
param12.ParameterName = "@vram";
param13.ParameterName = "@colors";
param14.ParameterName = "@res";
param15.ParameterName = "@spu";
param16.ParameterName = "@mpu";
param17.ParameterName = "@sound_channels";
param18.ParameterName = "@music_channels";
param19.ParameterName = "@hdd1";
param20.ParameterName = "@hdd2";
param21.ParameterName = "@hdd3";
param22.ParameterName = "@disk1";
param23.ParameterName = "@cap1";
param24.ParameterName = "@disk2";
param25.ParameterName = "@cap2";
param26.ParameterName = "@comment";
param1.DbType = DbType.Int32;
param2.DbType = DbType.Int32;
param3.DbType = DbType.String;
param4.DbType = DbType.Int32;
param5.DbType = DbType.Double;
param6.DbType = DbType.Int32;
param7.DbType = DbType.Double;
param8.DbType = DbType.Int32;
param9.DbType = DbType.Int32;
param10.DbType = DbType.Int32;
param11.DbType = DbType.Int32;
param12.DbType = DbType.Int32;
param13.DbType = DbType.Int32;
param14.DbType = DbType.String;
param15.DbType = DbType.Int32;
param16.DbType = DbType.Int32;
param17.DbType = DbType.Int32;
param18.DbType = DbType.Int32;
param19.DbType = DbType.Int32;
param20.DbType = DbType.Int32;
param21.DbType = DbType.Int32;
param22.DbType = DbType.Int32;
param23.DbType = DbType.String;
param24.DbType = DbType.Int32;
param25.DbType = DbType.String;
param26.DbType = DbType.String;
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param1.Value = entry.Company;
param2.Value = entry.Year;
param3.Value = entry.Model;
param4.Value = entry.Cpu1;
param5.Value = entry.Mhz1;
param6.Value = entry.Cpu2;
param7.Value = entry.Mhz2;
param8.Value = entry.Bits;
param9.Value = entry.Ram;
param10.Value = entry.Rom;
param11.Value = entry.Gpu;
param12.Value = entry.Vram;
param13.Value = entry.Colors;
param14.Value = entry.Resolution;
param15.Value = entry.Spu;
param16.Value = entry.Mpu;
param17.Value = entry.SoundChannels;
param18.Value = entry.MusicChannels;
param19.Value = entry.Hdd1;
param20.Value = entry.Hdd2;
param21.Value = entry.Hdd3;
param22.Value = entry.Disk1;
param23.Value = entry.Cap1;
param24.Value = entry.Disk2;
param25.Value = entry.Cap2;
param26.Value = entry.Comment;
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dbcmd.Parameters.Add(param1);
dbcmd.Parameters.Add(param2);
dbcmd.Parameters.Add(param3);
dbcmd.Parameters.Add(param4);
dbcmd.Parameters.Add(param5);
dbcmd.Parameters.Add(param6);
dbcmd.Parameters.Add(param7);
dbcmd.Parameters.Add(param8);
dbcmd.Parameters.Add(param9);
dbcmd.Parameters.Add(param10);
dbcmd.Parameters.Add(param11);
dbcmd.Parameters.Add(param12);
dbcmd.Parameters.Add(param13);
dbcmd.Parameters.Add(param14);
dbcmd.Parameters.Add(param15);
dbcmd.Parameters.Add(param16);
dbcmd.Parameters.Add(param17);
dbcmd.Parameters.Add(param18);
dbcmd.Parameters.Add(param19);
dbcmd.Parameters.Add(param20);
dbcmd.Parameters.Add(param21);
dbcmd.Parameters.Add(param22);
dbcmd.Parameters.Add(param23);
dbcmd.Parameters.Add(param24);
dbcmd.Parameters.Add(param25);
dbcmd.Parameters.Add(param26);
return dbcmd;
}
static List<Computer> ComputersFromDataTable(DataTable dataTable)
{
List<Computer> entries = new List<Computer>();
foreach(DataRow dataRow in dataTable.Rows)
{
Computer entry = new Computer
{
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Id = int.Parse(dataRow["id"].ToString()),
Company = int.Parse(dataRow["company"].ToString()),
Year = int.Parse(dataRow["year"].ToString()),
Model = dataRow["model"].ToString(),
Cpu1 = int.Parse(dataRow["cpu1"].ToString()),
Mhz1 = float.Parse(dataRow["mhz1"].ToString()),
Cpu2 = int.Parse(dataRow["cpu2"].ToString()),
Mhz2 = float.Parse(dataRow["mhz2"].ToString()),
Bits = int.Parse(dataRow["bits"].ToString()),
Ram = int.Parse(dataRow["ram"].ToString()),
Rom = int.Parse(dataRow["rom"].ToString()),
Gpu = int.Parse(dataRow["gpu"].ToString()),
Vram = int.Parse(dataRow["vram"].ToString()),
Colors = int.Parse(dataRow["colors"].ToString()),
Resolution = dataRow["res"].ToString(),
Spu = int.Parse(dataRow["spu"].ToString()),
Mpu = int.Parse(dataRow["mpu"].ToString()),
SoundChannels = int.Parse(dataRow["sound_channels"].ToString()),
MusicChannels = int.Parse(dataRow["music_channels"].ToString()),
Hdd1 = int.Parse(dataRow["hdd1"].ToString()),
Hdd2 = int.Parse(dataRow["hdd2"].ToString()),
Hdd3 = int.Parse(dataRow["hdd3"].ToString()),
Disk1 = int.Parse(dataRow["disk1"].ToString()),
Cap1 = dataRow["cap1"].ToString(),
Disk2 = int.Parse(dataRow["disk2"].ToString()),
Cap2 = dataRow["cap2"].ToString(),
Comment = dataRow["comment"].ToString()
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};
entries.Add(entry);
}
return entries;
}
}
}
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