mirror of
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418 lines
15 KiB
C#
418 lines
15 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 : Resolution.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 Resolutions.
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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 Resolutions
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/// </summary>
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/// <param name="entries">All Resolutions</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 GetResolutions(out List<Resolution> entries)
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{
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#if DEBUG
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Console.WriteLine("Getting all Resolutions...");
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#endif
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try
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{
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const string SQL = "SELECT * from resolutions";
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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 = ResolutionsFromDataTable(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 Resolutions.");
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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 Resolutions since the specified start
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/// </summary>
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/// <param name="entries">List of Resolutions</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 GetResolutions(out List<Resolution> entries, ulong start, ulong count)
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{
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#if DEBUG
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Console.WriteLine("Getting {0} Resolutions 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 resolutions 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 = ResolutionsFromDataTable(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 Resolutions.");
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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 Resolution by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>Resolution with specified id, <c>null</c> if not found or error</returns>
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public Resolution GetResolution(int id)
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{
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#if DEBUG
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Console.WriteLine("Getting Resolution 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 resolutions 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<Resolution> entries = ResolutionsFromDataTable(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 Resolution.");
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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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/// Gets Resolution by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>Resolution with specified id, <c>null</c> if not found or error</returns>
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public Resolution GetResolution(int width, int height)
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{
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#if DEBUG
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Console.WriteLine("Getting first resolution of {0}x{1}...", width, height);
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#endif
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try
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{
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string sql = $"SELECT * from resolutions WHERE width = {width} AND height = {height}";
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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<Resolution> entries = ResolutionsFromDataTable(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 Resolution.");
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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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/// Gets Resolution by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>Resolution with specified id, <c>null</c> if not found or error</returns>
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public Resolution GetResolution(int width, int height, long colors)
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{
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#if DEBUG
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Console.WriteLine("Getting first resolution of {0}x{1} with {2} colors...", width, height, colors);
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#endif
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try
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{
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string sql =
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$"SELECT * from resolutions WHERE width = {width} AND height = {height} AND colors = {colors}";
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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<Resolution> entries = ResolutionsFromDataTable(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 Resolution.");
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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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/// Gets Resolution by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>Resolution with specified id, <c>null</c> if not found or error</returns>
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public Resolution GetResolution(int width, int height, long colors, long palette)
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{
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#if DEBUG
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Console.WriteLine("Getting first resolution of {0}x{1} with {2} colors from a palette of {3} colors...",
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width, height, colors, palette);
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#endif
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try
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{
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string sql =
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$"SELECT * from resolutions WHERE width = {width} AND height = {height} AND colors = {colors} AND palette = {palette}";
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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<Resolution> entries = ResolutionsFromDataTable(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 Resolution.");
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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 Resolutions in the database
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/// </summary>
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/// <returns>Entries in database</returns>
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public long CountResolutions()
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{
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#if DEBUG
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Console.WriteLine("Counting resolutions...");
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#endif
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IDbCommand dbcmd = dbCon.CreateCommand();
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dbcmd.CommandText = "SELECT COUNT(*) FROM resolutions";
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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 Resolution 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 AddResolution(Resolution entry, out long id)
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{
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#if DEBUG
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Console.Write("Adding Resolution...");
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#endif
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IDbCommand dbcmd = GetCommandResolution(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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const string SQL =
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"INSERT INTO resolutions (width, height, colors, palette, chars) VALUES (@width, @height, @colors, " +
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"@palette, @chars)";
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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 Resolution 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 UpdateResolution(Resolution entry)
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{
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#if DEBUG
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Console.WriteLine("Updating Resolution `{0}`...", entry.Id);
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#endif
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IDbCommand dbcmd = GetCommandResolution(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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string sql =
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"UPDATE resolutions SET width = @width, height = @height, colors = @colors, palette = @palette, " +
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"chars = @chars " +
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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 Resolution 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 RemoveResolution(long id)
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{
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#if DEBUG
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Console.WriteLine("Removing Resolution 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 resolutions 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 GetCommandResolution(Resolution 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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param1.ParameterName = "@width";
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param2.ParameterName = "@height";
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param3.ParameterName = "@colors";
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param4.ParameterName = "@palette";
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param5.ParameterName = "@chars";
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param1.DbType = DbType.Int32;
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param2.DbType = DbType.Int32;
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|
param3.DbType = DbType.Int64;
|
|||
|
|
param4.DbType = DbType.Int64;
|
|||
|
|
param5.DbType = DbType.Boolean;
|
|||
|
|
|
|||
|
|
param1.Value = entry.Width;
|
|||
|
|
param2.Value = entry.Height;
|
|||
|
|
param3.Value = entry.Colors == 0 ? (object)null : entry.Colors;
|
|||
|
|
param4.Value = entry.Palette == 0 ? (object)null : entry.Palette;
|
|||
|
|
param5.Value = entry.Chars;
|
|||
|
|
|
|||
|
|
dbcmd.Parameters.Add(param1);
|
|||
|
|
dbcmd.Parameters.Add(param2);
|
|||
|
|
dbcmd.Parameters.Add(param3);
|
|||
|
|
dbcmd.Parameters.Add(param4);
|
|||
|
|
dbcmd.Parameters.Add(param5);
|
|||
|
|
|
|||
|
|
return dbcmd;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static List<Resolution> ResolutionsFromDataTable(DataTable dataTable)
|
|||
|
|
{
|
|||
|
|
List<Resolution> entries = new List<Resolution>();
|
|||
|
|
|
|||
|
|
foreach(DataRow dataRow in dataTable.Rows)
|
|||
|
|
{
|
|||
|
|
Resolution entry = new Resolution
|
|||
|
|
{
|
|||
|
|
Id = (int)dataRow["id"],
|
|||
|
|
Width = (int)dataRow["width"],
|
|||
|
|
Height = (int)dataRow["height"],
|
|||
|
|
Colors = dataRow["colors"] == DBNull.Value ? 0 : (long)dataRow["colors"],
|
|||
|
|
Palette = dataRow["palette"] == DBNull.Value ? 0 : (long)dataRow["palette"],
|
|||
|
|
Chars = (bool)dataRow["chars"]
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
entries.Add(entry);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return entries;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|