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326 lines
11 KiB
C#
326 lines
11 KiB
C#
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/******************************************************************************
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// Canary Islands Computer Museum Website
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// ----------------------------------------------------------------------------
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//
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// Filename : MachineFamily.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains operations to manage machine_families.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2003-2018 Natalia Portillo
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*******************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Data;
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using Cicm.Database.Schemas;
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namespace Cicm.Database
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{
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public partial class Operations
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{
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/// <summary>
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/// Gets all machine_families
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/// </summary>
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/// <param name="entries">All machine_families</param>
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/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetMachineFamilies(out List<MachineFamily> entries)
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{
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#if DEBUG
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Console.WriteLine("Getting all machine_families...");
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#endif
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try
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{
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const string SQL = "SELECT * from machine_families";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = SQL;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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entries = MachineFamiliesFromDataTable(dataSet.Tables[0]);
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return true;
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting machine_families.");
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Console.WriteLine(ex);
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entries = null;
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return false;
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}
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}
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/// <summary>
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/// Gets all machine_families from specified company
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/// </summary>
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/// <param name="entries">All machine_families</param>
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/// <param name="company">Company id</param>
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/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetMachineFamilies(out List<MachineFamily> entries, int company)
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{
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#if DEBUG
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Console.WriteLine("Getting all machine_families from company id {0}...", company);
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#endif
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try
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{
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string sql = $"SELECT * from machine_families WHERE company = '{company}'";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = sql;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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entries = MachineFamiliesFromDataTable(dataSet.Tables[0]);
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return true;
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting machine_families.");
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Console.WriteLine(ex);
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entries = null;
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return false;
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}
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}
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/// <summary>
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/// Gets the specified number of machine_families since the specified start
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/// </summary>
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/// <param name="entries">List of machine_families</param>
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/// <param name="start">Start of query</param>
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/// <param name="count">How many entries to retrieve</param>
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/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetMachineFamilies(out List<MachineFamily> entries, ulong start, ulong count)
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{
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#if DEBUG
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Console.WriteLine("Getting {0} machine_families from {1}...", count, start);
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#endif
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try
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{
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string sql = $"SELECT * FROM machine_families LIMIT {start}, {count}";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = sql;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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entries = MachineFamiliesFromDataTable(dataSet.Tables[0]);
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return true;
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting machine_families.");
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Console.WriteLine(ex);
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entries = null;
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return false;
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}
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}
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/// <summary>
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/// Gets machine_families by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>MachineFamily with specified id, <c>null</c> if not found or error</returns>
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public MachineFamily GetMachineFamily(int id)
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{
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#if DEBUG
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Console.WriteLine("Getting machine_families with id {0}...", id);
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#endif
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try
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{
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string sql = $"SELECT * from machine_families WHERE id = '{id}'";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = sql;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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List<MachineFamily> entries = MachineFamiliesFromDataTable(dataSet.Tables[0]);
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return entries == null || entries.Count == 0 ? null : entries[0];
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting machine_families.");
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Console.WriteLine(ex);
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return null;
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}
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}
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/// <summary>
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/// Counts the number of machine_families in the database
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/// </summary>
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/// <returns>Entries in database</returns>
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public long CountMachineFamilies()
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{
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#if DEBUG
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Console.WriteLine("Counting machine_families...");
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#endif
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IDbCommand dbcmd = dbCon.CreateCommand();
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dbcmd.CommandText = "SELECT COUNT(*) FROM machine_families";
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object count = dbcmd.ExecuteScalar();
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dbcmd.Dispose();
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try { return Convert.ToInt64(count); }
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catch { return 0; }
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}
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/// <summary>
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/// Adds a new administrator to the database
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/// </summary>
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/// <param name="entry">Entry to add</param>
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/// <param name="id">ID of added entry</param>
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/// <returns><c>true</c> if added correctly, <c>false</c> otherwise</returns>
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public bool AddMachineFamily(MachineFamily entry, out long id)
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{
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#if DEBUG
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Console.Write("Adding machine_families `{0}`...", entry.Name);
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#endif
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IDbCommand dbcmd = GetCommandMachineFamily(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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const string SQL = "INSERT INTO machine_families (company, name) VALUES (@company, @name)";
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dbcmd.CommandText = SQL;
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dbcmd.ExecuteNonQuery();
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trans.Commit();
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dbcmd.Dispose();
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id = dbCore.LastInsertRowId;
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#if DEBUG
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Console.WriteLine(" id {0}", id);
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#endif
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return true;
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}
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/// <summary>
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/// Updated a machine_families in the database
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/// </summary>
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/// <param name="entry">Updated entry</param>
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/// <returns><c>true</c> if updated correctly, <c>false</c> otherwise</returns>
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public bool UpdateMachineFamily(MachineFamily entry)
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{
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#if DEBUG
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Console.WriteLine("Updating machine_families `{0}`...", entry.Name);
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#endif
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IDbCommand dbcmd = GetCommandMachineFamily(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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string sql = "UPDATE machine_families SET company = @company, name = @name " + $"WHERE id = {entry.Id}";
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dbcmd.CommandText = sql;
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dbcmd.ExecuteNonQuery();
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trans.Commit();
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dbcmd.Dispose();
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return true;
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}
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/// <summary>
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/// Removes a machine_families from the database
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/// </summary>
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/// <param name="id">ID of entry to remove</param>
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/// <returns><c>true</c> if removed correctly, <c>false</c> otherwise</returns>
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public bool RemoveMachineFamily(long id)
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{
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#if DEBUG
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Console.WriteLine("Removing machine_families widh id `{0}`...", id);
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#endif
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IDbCommand dbcmd = dbCon.CreateCommand();
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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string sql = $"DELETE FROM machine_families WHERE id = '{id}';";
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dbcmd.CommandText = sql;
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dbcmd.ExecuteNonQuery();
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trans.Commit();
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dbcmd.Dispose();
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return true;
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}
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IDbCommand GetCommandMachineFamily(MachineFamily entry)
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{
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IDbCommand dbcmd = dbCon.CreateCommand();
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IDbDataParameter param1 = dbcmd.CreateParameter();
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IDbDataParameter param2 = dbcmd.CreateParameter();
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param1.ParameterName = "@company";
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param2.ParameterName = "@name";
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param1.DbType = DbType.Int32;
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param2.DbType = DbType.String;
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param1.Value = entry.Company;
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param2.Value = entry.Name;
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dbcmd.Parameters.Add(param1);
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dbcmd.Parameters.Add(param2);
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return dbcmd;
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}
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static List<MachineFamily> MachineFamiliesFromDataTable(DataTable dataTable)
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{
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List<MachineFamily> entries = new List<MachineFamily>();
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foreach(DataRow dataRow in dataTable.Rows)
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{
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MachineFamily entry = new MachineFamily
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{
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Id = (int)dataRow["id"],
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Company = (int)dataRow["company"],
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Name = (string)dataRow["name"]
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};
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entries.Add(entry);
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}
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return entries;
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}
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}
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}
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