/// <summary>
/// Loads <see cref="CompressionSetting"/> information as an <see cref="ObservableCollection{T}"/> style list.
/// </summary>
/// <param name="database"><see cref="AdoDataConnection"/> to connection to database.</param>
/// <param name="keys">Keys of the compression settings to be loaded from the database.</param>
/// <returns>Collection of <see cref="CompressionSetting"/>.</returns>
public static ObservableCollection <CompressionSetting> Load(AdoDataConnection database, IList <int> keys)
{
bool createdConnection = false;
try
{
createdConnection = CreateConnection(ref database);
string commaSeparatedKeys;
CompressionSetting[] compressionSettingList = null;
DataTable compressionSettingTable;
int pointID;
if ((object)keys != null && keys.Count > 0)
{
commaSeparatedKeys = keys.Select(key => "" + key.ToString() + "").Aggregate((str1, str2) => str1 + "," + str2);
compressionSettingTable = database.RetrieveData(
$"SELECT PointID, CompressionMinTime, CompressionMaxTime, CompressionLimit " +
$"FROM CompressionSetting WHERE PointID IN ({commaSeparatedKeys})");
compressionSettingList = new CompressionSetting[compressionSettingTable.Rows.Count];
foreach (DataRow row in compressionSettingTable.Rows)
{
pointID = row.ConvertField <int>(nameof(PointID));
compressionSettingList[keys.IndexOf(pointID)] = new CompressionSetting()
{
PointID = pointID,
CompressionMinTime = row.ConvertField <ulong>(nameof(CompressionMinTime)),
CompressionMaxTime = row.ConvertField <ulong>(nameof(CompressionMaxTime)),
CompressionLimit = row.ConvertField <double>(nameof(CompressionLimit)),
IsNew = false
};
}
}
return(new ObservableCollection <CompressionSetting>(compressionSettingList ?? new CompressionSetting[0]));
}
finally
{
if (createdConnection && database != null)
{
database.Dispose();
}
}
}
/// <summary>
/// Saves <see cref="CompressionSetting"/> information to database.
/// </summary>
/// <param name="database"><see cref="AdoDataConnection"/> to connection to database.</param>
/// <param name="compressionSetting">Information about <see cref="CompressionSetting"/>.</param>
/// <returns>String, for display use, indicating success.</returns>
public static string Save(AdoDataConnection database, CompressionSetting compressionSetting)
{
bool createdConnection = false;
try
{
createdConnection = CreateConnection(ref database);
string successMessage = "CompressionSetting information saved successfully";
if (compressionSetting.IsNew)
{
database.ExecuteNonQuery(
$"INSERT INTO CompressionSetting ({nameof(PointID)}, {nameof(CompressionMinTime)}, {nameof(CompressionMaxTime)}, {nameof(CompressionLimit)}) " +
$"VALUES({{0}}, {{1}}, {{2}}, {{3}})", compressionSetting.PointID, compressionSetting.CompressionMinTime, compressionSetting.CompressionMaxTime, compressionSetting.CompressionLimit);
compressionSetting.IsNew = false;
}
else
{
database.ExecuteNonQuery(
$"UPDATE CompressionSetting SET " +
$" {nameof(CompressionMinTime)} = {{0}}, " +
$" {nameof(CompressionMaxTime)} = {{1}}, " +
$" {nameof(CompressionLimit)} = {{2}} " +
$"WHERE {nameof(PointID)} = {{3}}",
compressionSetting.CompressionMinTime, compressionSetting.CompressionMaxTime, compressionSetting.CompressionLimit, compressionSetting.PointID);
}
try
{
CommonFunctions.SendCommandToService("ReloadConfig");
}
catch (Exception ex)
{
CommonFunctions.LogException(database, "CompressionSetting Save", ex);
}
return(successMessage);
}
finally
{
if (createdConnection && database != null)
{
database.Dispose();
}
}
}
