/// <summary>
/// Get the command from provider, check connection is opened, affect connection and transaction
/// Prepare the command parameters and add scope parameters
/// </summary>
public async Task <(DbCommand Command, bool IsBatch)> GetCommandAsync(DbCommandType commandType, DbConnection connection, DbTransaction transaction, SyncFilter filter = null)
{
// Create the key
var commandKey = $"{connection.DataSource}-{connection.Database}-{this.TableDescription.GetFullName()}-{commandType}";
var(command, isBatch) = GetCommand(commandType, filter);
if (command == null)
{
return(null, false);
}
// Add Parameters
await this.AddCommandParametersAsync(commandType, command, connection, transaction, filter).ConfigureAwait(false);
if (command == null)
{
throw new MissingCommandException(commandType.ToString());
}
if (connection == null)
{
throw new MissingConnectionException();
}
if (connection.State != ConnectionState.Open)
{
throw new ConnectionClosedException(connection);
}
command.Connection = connection;
command.Transaction = transaction;
// Get a lazy command instance
var lazyCommand = commands.GetOrAdd(commandKey, k => new Lazy <SyncCommand>(() =>
{
var syncCommand = new SyncCommand(commandKey);
return(syncCommand);
}));
// lazyCommand.Metadata is a boolean indicating if the command is already prepared on the server
if (lazyCommand.Value.IsPrepared == true)
{
return(command, isBatch);
}
// Testing The Prepare() performance increase
command.Prepare();
// Adding this command as prepared
lazyCommand.Value.IsPrepared = true;
commands.AddOrUpdate(commandKey, lazyCommand, (key, lc) => new Lazy <SyncCommand>(() => lc.Value));
return(command, isBatch);
}
public string GetCommandName(DbCommandType objectType, IEnumerable <string> adds = null)
{
if (!_names.ContainsKey(objectType))
{
throw new NotSupportedException(
$"MySql provider does not support the command type {objectType.ToString()}");
}
return(_names[objectType]);
}
/// <summary>
/// Get the command from provider, check connection is opened, affect connection and transaction
/// Prepare the command parameters and add scope parameters
/// </summary>
internal async Task <DbCommand> PrepareCommandAsync(DbCommandType commandType, DbConnection connection, DbTransaction transaction, SyncFilter filter = null)
{
// Create the key
var commandKey = $"{connection.DataSource}-{connection.Database}-{this.TableDescription.GetFullName()}-{commandType}";
// Get a lazy command instance
var lazyCommand = commands.GetOrAdd(commandKey, k => new Lazy <DbCommand>(() => GetCommand(commandType, filter)));
// Get the concrete instance
var command = lazyCommand.Value;
if (command == null)
{
throw new MissingCommandException(commandType.ToString());
}
if (connection == null)
{
throw new MissingConnectionException();
}
if (connection.State != ConnectionState.Open)
{
throw new ConnectionClosedException(connection);
}
command.Connection = connection;
if (transaction != null)
{
command.Transaction = transaction;
}
// Add Parameters
await this.AddCommandParametersAsync(commandType, command, connection, transaction, filter).ConfigureAwait(false);
// Testing The Prepare() performance increase
command.Prepare();
return(command);
}
public string GetCommandName(DbCommandType objectType, SyncFilter filter = null)
{
if (!names.ContainsKey(objectType))
{
throw new NotSupportedException($"Sqlite provider does not support the command type {objectType.ToString()}");
}
var commandName = names[objectType];
// concat filter name
//if (filter != null)
// commandName = string.Format(commandName, filter.GetFilterName());
return(commandName);
}
public string GetCommandName(DbCommandType objectType, IEnumerable <FilterClause> filters = null)
{
if (!names.ContainsKey(objectType))
{
throw new NotSupportedException($"Sqlite provider does not support the command type {objectType.ToString()}");
}
var commandName = names[objectType];
if (filters != null)
{
string name = "";
string sep = "";
foreach (var c in filters)
{
var columnName = ParserName.Parse(c.ColumnName).Unquoted().Normalized().ToString();
name += $"{columnName}{sep}";
sep = "_";
}
commandName = string.Format(commandName, name);
}
return(commandName);
}
