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345 lines
14 KiB
C#
345 lines
14 KiB
C#
/******************************************************************************
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// Canary Islands Computer Museum Website
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// ----------------------------------------------------------------------------
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//
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// Filename : SoundSynth.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 sound synthetizers.
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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 sound synthetizers
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/// </summary>
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/// <param name="entries">All sound synthetizers</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 GetSoundSynths(out List<SoundSynth> entries)
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{
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#if DEBUG
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Console.WriteLine("Getting all sound synthetizers...");
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#endif
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try
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{
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const string SQL = "SELECT * from sound_synths";
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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 = SoundSynthFromDataTable(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 sound synthetizers.");
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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 sound synthetizers since the specified start
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/// </summary>
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/// <param name="entries">List of sound synthetizers</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 GetSoundSynths(out List<SoundSynth> entries, ulong start, ulong count)
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{
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#if DEBUG
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Console.WriteLine("Getting {0} sound synthetizers 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 sound_synths 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 = SoundSynthFromDataTable(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 sound synthetizers.");
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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 sound synthetizer by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>Sound synthetizer with specified id, <c>null</c> if not found or error</returns>
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public SoundSynth GetSoundSynth(int id)
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{
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#if DEBUG
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Console.WriteLine("Getting sound synthetizer 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 sound_synths 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<SoundSynth> entries = SoundSynthFromDataTable(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 sound synthetizer.");
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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 sound synthetizers in the database
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/// </summary>
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/// <returns>Entries in database</returns>
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public long CountSoundSynths()
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{
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#if DEBUG
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Console.WriteLine("Counting sound synthetizers...");
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#endif
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IDbCommand dbcmd = dbCon.CreateCommand();
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dbcmd.CommandText = "SELECT COUNT(*) FROM sound_synths";
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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 sound synthetizer 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 AddSoundSynth(SoundSynth entry, out long id)
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{
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#if DEBUG
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Console.Write("Adding sound synthetizer `{0}`...", entry.Name);
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#endif
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IDbCommand dbcmd = GetCommandSoundSynth(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 sound_synths (name, company, model_code, introduced, voices, frequency, " +
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"depth, square_wave, white_noise, type) VALUES (@name, @company, @model_code, " +
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"@introduced, @voices, @frequency, @depth, @square_wave, @white_noise, @type)";
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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 sound synthetizer 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 UpdateSoundSynth(SoundSynth entry)
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{
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#if DEBUG
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Console.WriteLine("Updating sound synthetizer `{0}`...", entry.Name);
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#endif
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IDbCommand dbcmd = GetCommandSoundSynth(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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string sql = "UPDATE sound_synths SET name = @name, company = @company, model_code = @model_code, " +
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"introduced = @introduced, voices = @voices, frequency = @frequency, depth = @depth, " +
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"square_wave = @square_wave, white_noise = @white_noise, type = @type, " +
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$"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 sound synthetizer 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 RemoveSoundSynth(long id)
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{
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#if DEBUG
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Console.WriteLine("Removing sound synthetizer 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 sound_synths 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 GetCommandSoundSynth(SoundSynth 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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IDbDataParameter param3 = dbcmd.CreateParameter();
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IDbDataParameter param4 = dbcmd.CreateParameter();
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IDbDataParameter param5 = dbcmd.CreateParameter();
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IDbDataParameter param6 = dbcmd.CreateParameter();
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IDbDataParameter param7 = dbcmd.CreateParameter();
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IDbDataParameter param8 = dbcmd.CreateParameter();
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IDbDataParameter param9 = dbcmd.CreateParameter();
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IDbDataParameter param10 = dbcmd.CreateParameter();
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param1.ParameterName = "@name";
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param2.ParameterName = "@company";
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param3.ParameterName = "@model_code";
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param4.ParameterName = "@introduced";
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param5.ParameterName = "@voices";
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param6.ParameterName = "@frequency";
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param7.ParameterName = "@depth";
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param8.ParameterName = "@square_wave";
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param9.ParameterName = "@white_noise";
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param10.ParameterName = "@type";
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param1.DbType = DbType.String;
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param2.DbType = DbType.Int32;
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param3.DbType = DbType.String;
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param4.DbType = DbType.DateTime;
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param5.DbType = DbType.Int32;
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param6.DbType = DbType.Double;
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param7.DbType = DbType.Int32;
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param8.DbType = DbType.Int32;
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param9.DbType = DbType.Int32;
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param10.DbType = DbType.Int32;
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param1.Value = entry.Name;
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param2.Value = entry.Company?.Id;
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param3.Value = entry.ModelCode;
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param4.Value = entry.Introduced == DateTime.MinValue ? (object)null : entry.Introduced;
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param5.Value = entry.Voices == 0 ? (object)null : entry.Voices;
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param6.Value = entry.Frequency <= 0 ? (object)null : entry.Frequency;
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param7.Value = entry.Depth == 0 ? (object)null : entry.Depth;
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param8.Value = entry.SquareWave == 0 ? (object)null : entry.SquareWave;
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param9.Value = entry.WhiteNoise == 0 ? (object)null : entry.WhiteNoise;
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param10.Value = entry.Type == 0 ? (object)null : entry.Type;
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dbcmd.Parameters.Add(param1);
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dbcmd.Parameters.Add(param2);
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dbcmd.Parameters.Add(param3);
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dbcmd.Parameters.Add(param4);
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dbcmd.Parameters.Add(param5);
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dbcmd.Parameters.Add(param6);
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dbcmd.Parameters.Add(param7);
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dbcmd.Parameters.Add(param8);
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dbcmd.Parameters.Add(param9);
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dbcmd.Parameters.Add(param10);
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return dbcmd;
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}
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List<SoundSynth> SoundSynthFromDataTable(DataTable dataTable)
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{
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List<SoundSynth> entries = new List<SoundSynth>();
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foreach(DataRow dataRow in dataTable.Rows)
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{
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SoundSynth entry = new SoundSynth
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{
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Id = (int)dataRow["id"],
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Name = (string)dataRow["name"],
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ModelCode = dataRow["model_code"] == DBNull.Value ? null : (string)dataRow["model_code"],
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Voices = dataRow["voices"] == DBNull.Value ? 0 : (int)dataRow["voices"],
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Frequency = dataRow["frequency"] == DBNull.Value ? 0 : (double)dataRow["frequency"],
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Depth = dataRow["depth"] == DBNull.Value ? 0 : (int)dataRow["depth"],
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SquareWave = dataRow["square_wave"] == DBNull.Value ? 0 : (int)dataRow["square_wave"],
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WhiteNoise = dataRow["white_noise"] == DBNull.Value ? 0 : (int)dataRow["white_noise"],
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Type = dataRow["type"] == DBNull.Value ? 0 : (int)dataRow["type"],
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Company = dataRow["company"] == DBNull.Value ? null : GetCompany((int)dataRow["company"]),
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Introduced = dataRow["introduced"] == DBNull.Value
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? DateTime.MinValue
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: Convert.ToDateTime(dataRow["introduced"])
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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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} |