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Add operations for database version 2.

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This commit is contained in:
Natalia Portillo
2018-04-12 10:05:42 +01:00
parent 8e999c1b2f
commit de9dc90b86
25 changed files with 4709 additions and 196 deletions
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218
Cicm.Database/Operations/DiskFormat.cs Normal file
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using System;
using System.Collections.Generic;
using System.Data;
using Cicm.Database.Schemas;
using Console = System.Console;
namespace Cicm.Database
{
public partial class Operations
{
public bool GetDiskFormats(out List<DiskFormat> entries)
{
#if DEBUG
Console.WriteLine("Getting all disk formats...");
#endif
try
{
const string SQL = "SELECT * from Formatos_de_disco";
IDbCommand dbCmd = dbCon.CreateCommand();
IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
dbCmd.CommandText = SQL;
DataSet dataSet = new DataSet();
dataAdapter.SelectCommand = dbCmd;
dataAdapter.Fill(dataSet);
entries = DiskFormatsFromDataTable(dataSet.Tables[0]);
return true;
}
catch(Exception ex)
{
Console.WriteLine("Error getting disk formats.");
Console.WriteLine(ex);
entries = null;
return false;
}
}
public bool GetDiskFormats(out List<DiskFormat> entries, ulong start, ulong count)
{
#if DEBUG
Console.WriteLine("Getting {0} disk formats from {1}...", count, start);
#endif
try
{
string sql = $"SELECT * FROM Formatos_de_disco 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 = DiskFormatsFromDataTable(dataSet.Tables[0]);
return true;
}
catch(Exception ex)
{
Console.WriteLine("Error getting disk formats.");
Console.WriteLine(ex);
entries = null;
return false;
}
}
public DiskFormat GetDiskFormat(int id)
{
#if DEBUG
Console.WriteLine("Getting disk format with id {0}...", id);
#endif
try
{
string sql = $"SELECT * from Formatos_de_disco 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<DiskFormat> entries = DiskFormatsFromDataTable(dataSet.Tables[0]);
return entries == null || entries.Count == 0 ? null : entries[0];
}
catch(Exception ex)
{
Console.WriteLine("Error getting disk format.");
Console.WriteLine(ex);
return null;
}
}
public long CountDiskFormats()
{
#if DEBUG
Console.WriteLine("Counting disk formats...");
#endif
IDbCommand dbcmd = dbCon.CreateCommand();
dbcmd.CommandText = "SELECT COUNT(*) FROM Formatos_de_disco";
object count = dbcmd.ExecuteScalar();
dbcmd.Dispose();
try { return Convert.ToInt64(count); }
catch { return 0; }
}
public bool AddDiskFormat(DiskFormat entry, out long id)
{
#if DEBUG
Console.Write("Adding disk format `{0}`...", entry.Format);
#endif
IDbCommand dbcmd = GetCommandDiskFormat(entry);
IDbTransaction trans = dbCon.BeginTransaction();
dbcmd.Transaction = trans;
const string SQL = "INSERT INTO Formatos_de_disco (Format)" + " VALUES (@Format)";
dbcmd.CommandText = SQL;
dbcmd.ExecuteNonQuery();
trans.Commit();
dbcmd.Dispose();
id = dbCore.LastInsertRowId;
#if DEBUG
Console.WriteLine(" id {0}", id);
#endif
return true;
}
public bool UpdateDiskFormat(DiskFormat entry)
{
#if DEBUG
Console.WriteLine("Updating disk format `{0}`...", entry.Format);
#endif
IDbCommand dbcmd = GetCommandDiskFormat(entry);
IDbTransaction trans = dbCon.BeginTransaction();
dbcmd.Transaction = trans;
string sql = "UPDATE Formatos_de_disco SET Format = @Format " + $"WHERE id = {entry.id}";
dbcmd.CommandText = sql;
dbcmd.ExecuteNonQuery();
trans.Commit();
dbcmd.Dispose();
return true;
}
public bool RemoveDiskFormat(long id)
{
#if DEBUG
Console.WriteLine("Removing disk format widh id `{0}`...", id);
#endif
IDbCommand dbcmd = dbCon.CreateCommand();
IDbTransaction trans = dbCon.BeginTransaction();
dbcmd.Transaction = trans;
string sql = $"DELETE FROM Formatos_de_disco WHERE id = '{id}';";
dbcmd.CommandText = sql;
dbcmd.ExecuteNonQuery();
trans.Commit();
dbcmd.Dispose();
return true;
}
IDbCommand GetCommandDiskFormat(DiskFormat entry)
{
IDbCommand dbcmd = dbCon.CreateCommand();
IDbDataParameter param1 = dbcmd.CreateParameter();
param1.ParameterName = "@Format";
param1.DbType = DbType.String;
param1.Value = entry.Format;
dbcmd.Parameters.Add(param1);
return dbcmd;
}
static List<DiskFormat> DiskFormatsFromDataTable(DataTable dataTable)
{
List<DiskFormat> entries = new List<DiskFormat>();
foreach(DataRow dataRow in dataTable.Rows)
{
DiskFormat entry = new DiskFormat
{
id = int.Parse(dataRow["id"].ToString()),
Format = dataRow["Format"].ToString()
};
entries.Add(entry);
}
return entries;
}
}
}