/// <summary>
/// Executes the operation asynchronously.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation that handles processing the result of the command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">User supplied state.</param>
/// <returns>Task.</returns>
/// <exception cref="NotImplementedException"></exception>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <OleDbCommand, OleDbParameter> executionToken, CommandImplementationAsync <OleDbCommand> implementation, CancellationToken cancellationToken, object state)
{
if (executionToken == null)
{
throw new ArgumentNullException("executionToken", "executionToken is null.");
}
if (implementation == null)
{
throw new ArgumentNullException("implementation", "implementation is null.");
}
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
try
{
using (var cmd = new OleDbCommand())
{
cmd.Connection = m_Connection;
if (m_Transaction != null)
{
cmd.Transaction = m_Transaction;
}
if (DefaultCommandTimeout.HasValue)
{
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
}
cmd.CommandText = executionToken.CommandText;
cmd.CommandType = executionToken.CommandType;
foreach (var param in executionToken.Parameters)
{
cmd.Parameters.Add(param);
}
var rows = await implementation(cmd).ConfigureAwait(false);
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return(rows);
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Executes the operation asynchronously.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation that handles processing the result of the command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">User supplied state.</param>
/// <returns>Task.</returns>
protected async override Task <int?> ExecuteAsync(CommandExecutionToken <NpgsqlCommand, NpgsqlParameter> executionToken, CommandImplementationAsync <NpgsqlCommand> implementation, CancellationToken cancellationToken, object?state)
{
if (executionToken == null)
{
throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
try
{
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = m_Connection;
if (m_Transaction != null)
{
cmd.Transaction = m_Transaction;
}
executionToken.PopulateCommand(cmd, DefaultCommandTimeout);
int?rows;
if (((PostgreSqlCommandExecutionToken)executionToken).DereferenceCursors)
{
rows = await DereferenceCursorsAsync(cmd, implementation).ConfigureAwait(false);
}
else
{
rows = await implementation(cmd).ConfigureAwait(false);
}
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return(rows);
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Executes the operation asynchronously.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation that handles processing the result of the command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">User supplied state.</param>
/// <returns>Task.</returns>
/// <exception cref="NotImplementedException"></exception>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <SQLiteCommand, SQLiteParameter> executionToken, CommandImplementationAsync <SQLiteCommand> implementation, CancellationToken cancellationToken, object?state)
{
if (executionToken == null)
{
throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
IDisposable?lockToken = null;
try
{
switch (mode)
{
case LockType.Read: lockToken = await SyncLock.ReaderLockAsync().ConfigureAwait(false); break;
case LockType.Write: lockToken = await SyncLock.WriterLockAsync().ConfigureAwait(false); break;
}
using (var cmd = new SQLiteCommand())
{
cmd.Connection = m_Connection;
if (m_Transaction != null)
{
cmd.Transaction = m_Transaction;
}
executionToken.PopulateCommand(cmd, DefaultCommandTimeout);
var rows = await implementation(cmd).ConfigureAwait(false);
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return(rows);
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert SQLiteException into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
finally
{
if (lockToken != null)
{
lockToken.Dispose();
}
}
}
/// <summary>
/// Executes the specified operation asynchronously.
/// </summary>
/// <param name="executionToken"></param>
/// <param name="implementation"></param>
/// <param name="cancellationToken"></param>
/// <param name="state"></param>
/// <returns></returns>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <OleDbCommand, OleDbParameter> executionToken, CommandImplementationAsync <OleDbCommand> implementation, CancellationToken cancellationToken, object?state)
{
if (executionToken == null)
{
throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var currentToken = executionToken as AccessCommandExecutionToken;
if (currentToken == null)
{
throw new ArgumentNullException(nameof(executionToken), "only AccessCommandExecutionToken is supported.");
}
var startTime = DateTimeOffset.Now;
try
{
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
int?rows = null;
while (currentToken != null)
{
OnExecutionStarted(currentToken, startTime, state);
using (var cmd = new OleDbCommand())
{
cmd.Connection = con;
currentToken.PopulateCommand(cmd, DefaultCommandTimeout);
if (currentToken.ExecutionMode == AccessCommandExecutionMode.Materializer)
{
rows = await implementation(cmd).ConfigureAwait(false);
}
else if (currentToken.ExecutionMode == AccessCommandExecutionMode.ExecuteScalarAndForward)
{
if (currentToken.ForwardResult == null)
{
throw new InvalidOperationException("currentToken.ExecutionMode is ExecuteScalarAndForward, but currentToken.ForwardResult is null.");
}
currentToken.ForwardResult(await cmd.ExecuteScalarAsync().ConfigureAwait(false));
}
else
{
rows = await cmd.ExecuteNonQueryAsync().ConfigureAwait(false);
}
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(currentToken, startTime, DateTimeOffset.Now, rows, state);
}
currentToken = currentToken.NextCommand;
}
return(rows);
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Dereferences cursors returned by a stored procedure.
/// </summary>
/// <param name="cmd">The command.</param>
/// <param name="implementation">The implementation.</param>
protected static async Task <int?> DereferenceCursorsAsync(NpgsqlCommand cmd, CommandImplementationAsync <NpgsqlCommand> implementation)
{
if (cmd == null)
{
throw new ArgumentNullException(nameof(cmd), $"{nameof(cmd)} is null.");
}
if (cmd.Connection == null)
{
throw new ArgumentNullException($"{nameof(cmd)}.{nameof(cmd.Connection)}", $"{nameof(cmd)}.{nameof(cmd.Connection)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var closeTransaction = false;
try
{
if (cmd.Transaction == null)
{
cmd.Transaction = cmd.Connection.BeginTransaction();
closeTransaction = true;
}
var sql = new StringBuilder();
using (var reader = await cmd.ExecuteReaderAsync().ConfigureAwait(false))
while (await reader.ReadAsync().ConfigureAwait(false))
{
sql.AppendLine($"FETCH ALL IN \"{reader.GetString(0)}\";");
}
using (var cmd2 = new NpgsqlCommand())
{
cmd2.Connection = cmd.Connection;
cmd2.Transaction = cmd.Transaction;
cmd2.CommandTimeout = cmd.CommandTimeout;
cmd2.CommandText = sql.ToString();
cmd2.CommandType = CommandType.Text;
return(await implementation(cmd2).ConfigureAwait(false));
}
}
finally
{
if (closeTransaction)
{
await cmd.Transaction !.CommitAsync().ConfigureAwait(false);
}
}
}
Task <int?> ICommandDataSource <TCommand, TParameter> .ExecuteAsync(CommandExecutionToken <TCommand, TParameter> executionToken, CommandImplementationAsync <TCommand> implementation, CancellationToken cancellationToken, object state)
{
return(ExecuteAsync(executionToken, implementation, cancellationToken, state));
}
/// <summary>
/// Helper method for executing the operation.
/// </summary>
/// <param name="implementation">The implementation.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">The state.</param>
/// <returns>Task.</returns>
protected Task ExecuteCoreAsync(CommandImplementationAsync <TCommand> implementation, CancellationToken cancellationToken, object state)
{
return(Prepare().ExecuteAsync(implementation, cancellationToken, state));
}
/// <summary>
/// execute as an asynchronous operation.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">The state.</param>
/// <returns>Task.</returns>
/// <exception cref="ArgumentNullException">
/// executionToken;executionToken is null.
/// or
/// implementation;implementation is null.
/// </exception>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <SQLiteCommand, SQLiteParameter> executionToken, CommandImplementationAsync <SQLiteCommand> implementation, CancellationToken cancellationToken, object?state)
{
if (executionToken == null)
{
throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
try
{
using (var cmd = new SQLiteCommand())
{
cmd.Connection = m_Connection;
cmd.Transaction = m_Transaction;
if (DefaultCommandTimeout.HasValue)
{
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
}
cmd.CommandText = executionToken.CommandText;
cmd.CommandType = executionToken.CommandType;
foreach (var param in executionToken.Parameters)
{
cmd.Parameters.Add(param);
}
executionToken.ApplyCommandOverrides(cmd);
var rows = await implementation(cmd).ConfigureAwait(false);
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return(rows);
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert SQLiteException into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary> /// Executes the operation asynchronously. /// </summary> /// <param name="executionToken">The execution token.</param> /// <param name="implementation">The implementation that handles processing the result of the command.</param> /// <param name="cancellationToken">The cancellation token.</param> /// <param name="state">User supplied state.</param> /// <returns>Task.</returns> protected internal abstract Task <int?> ExecuteAsync(CommandExecutionToken <TCommand, TParameter> executionToken, CommandImplementationAsync <TCommand> implementation, CancellationToken cancellationToken, object state);
/// <summary>
/// Execute the operation asynchronously.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation that handles processing the result of the command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">User supplied state.</param>
/// <returns>Task.</returns>
protected override async Task<int?> ExecuteAsync(CommandExecutionToken<OleDbCommand, OleDbParameter> executionToken, CommandImplementationAsync<OleDbCommand> implementation, CancellationToken cancellationToken, object state)
{
if (executionToken == null)
throw new ArgumentNullException("executionToken", "executionToken is null.");
if (implementation == null)
throw new ArgumentNullException("implementation", "implementation is null.");
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
try
{
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
using (var cmd = new OleDbCommand())
{
cmd.Connection = con;
if (DefaultCommandTimeout.HasValue)
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
cmd.CommandText = executionToken.CommandText;
cmd.CommandType = executionToken.CommandType;
foreach (var param in executionToken.Parameters)
cmd.Parameters.Add(param);
executionToken.ApplyCommandOverrides(cmd);
var rows = await implementation(cmd).ConfigureAwait(false);
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return rows;
}
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Executes the specified operation asynchronously.
/// </summary>
/// <param name="executionToken"></param>
/// <param name="implementation"></param>
/// <param name="cancellationToken"></param>
/// <param name="state"></param>
/// <returns></returns>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <OleDbCommand, OleDbParameter> executionToken, CommandImplementationAsync <OleDbCommand> implementation, CancellationToken cancellationToken, object state)
{
if (executionToken == null)
{
throw new ArgumentNullException("executionToken", "executionToken is null.");
}
if (implementation == null)
{
throw new ArgumentNullException("implementation", "implementation is null.");
}
var currentToken = executionToken as AccessCommandExecutionToken;
if (currentToken == null)
{
throw new ArgumentNullException("executionToken", "only AccessCommandExecutionToken is supported.");
}
var startTime = DateTimeOffset.Now;
try
{
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
int?rows = null;
while (currentToken != null)
{
OnExecutionStarted(currentToken, startTime, state);
using (var cmd = new OleDbCommand())
{
cmd.Connection = con;
if (DefaultCommandTimeout.HasValue)
{
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
}
cmd.CommandText = currentToken.CommandText;
cmd.CommandType = currentToken.CommandType;
foreach (var param in currentToken.Parameters)
{
cmd.Parameters.Add(param);
}
currentToken.ApplyCommandOverrides(cmd);
if (currentToken.ExecutionMode == AccessCommandExecutionMode.Materializer)
{
rows = await implementation(cmd);
}
else if (currentToken.ExecutionMode == AccessCommandExecutionMode.ExecuteScalarAndForward)
{
currentToken.ForwardResult(await cmd.ExecuteScalarAsync());
}
else
{
rows = await cmd.ExecuteNonQueryAsync();
}
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(currentToken, startTime, DateTimeOffset.Now, rows, state);
}
currentToken = currentToken.NextCommand;
}
return(rows);
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Executes the specified implementation asynchronously.
/// </summary>
/// <param name="implementation">The implementation.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">The state.</param>
/// <returns>Task.</returns>
public Task <int?> ExecuteAsync(CommandImplementationAsync <TCommand> implementation, CancellationToken cancellationToken, object?state)
{
return(m_DataSource.ExecuteAsync(this, implementation, cancellationToken, state));
}
/// <summary>
/// execute as an asynchronous operation.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation that handles processing the result of the command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">User supplied state.</param>
/// <returns>Task.</returns>
/// <exception cref="ArgumentNullException">
/// executionToken;executionToken is null.
/// or
/// implementation;implementation is null.
/// </exception>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <NpgsqlCommand, NpgsqlParameter> executionToken, CommandImplementationAsync <NpgsqlCommand> implementation, CancellationToken cancellationToken, object?state)
{
if (executionToken == null)
{
throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
try
{
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = con;
if (DefaultCommandTimeout.HasValue)
{
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
}
cmd.CommandText = executionToken.CommandText;
cmd.CommandType = executionToken.CommandType;
foreach (var param in executionToken.Parameters)
{
cmd.Parameters.Add(param);
}
executionToken.ApplyCommandOverrides(cmd);
int?rows;
if (((PostgreSqlCommandExecutionToken)executionToken).DereferenceCursors)
{
rows = await DereferenceCursorsAsync(cmd, implementation).ConfigureAwait(false);
}
else
{
rows = await implementation(cmd).ConfigureAwait(false);
}
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return(rows);
}
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Executes the specified operation asynchronously.
/// </summary>
/// <param name="executionToken"></param>
/// <param name="implementation"></param>
/// <param name="cancellationToken"></param>
/// <param name="state"></param>
/// <returns></returns>
protected override async Task<int?> ExecuteAsync(CommandExecutionToken<SQLiteCommand, SQLiteParameter> executionToken, CommandImplementationAsync<SQLiteCommand> implementation, CancellationToken cancellationToken, object state)
{
if (executionToken == null)
throw new ArgumentNullException("executionToken", "executionToken is null.");
if (implementation == null)
throw new ArgumentNullException("implementation", "implementation is null.");
var mode = DisableLocks ? LockType.None : (executionToken as SQLiteCommandExecutionToken)?.LockType ?? LockType.Write;
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
IDisposable lockToken = null;
try
{
switch (mode)
{
case LockType.Read: lockToken = await SyncLock.ReaderLockAsync().ConfigureAwait(false); break;
case LockType.Write: lockToken = await SyncLock.WriterLockAsync().ConfigureAwait(false); break;
}
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
using (var cmd = new SQLiteCommand())
{
cmd.Connection = con;
if (DefaultCommandTimeout.HasValue)
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
cmd.CommandText = executionToken.CommandText;
cmd.CommandType = executionToken.CommandType;
foreach (var param in executionToken.Parameters)
cmd.Parameters.Add(param);
executionToken.ApplyCommandOverrides(cmd);
var rows = await implementation(cmd).ConfigureAwait(false);
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return rows;
}
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert SQLiteException into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
finally
{
if (lockToken != null)
lockToken.Dispose();
}
}
/// <summary>
/// Execute the operation asynchronously.
/// </summary>
/// <param name="executionToken">The execution token.</param>
/// <param name="implementation">The implementation that handles processing the result of the command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="state">User supplied state.</param>
/// <returns>Task.</returns>
protected override async Task <int?> ExecuteAsync(CommandExecutionToken <SqlCommand, SqlParameter> executionToken, CommandImplementationAsync <SqlCommand> implementation, CancellationToken cancellationToken, object?state)
{
if (executionToken == null)
{
throw new ArgumentNullException(nameof(executionToken), $"{nameof(executionToken)} is null.");
}
if (implementation == null)
{
throw new ArgumentNullException(nameof(implementation), $"{nameof(implementation)} is null.");
}
var startTime = DateTimeOffset.Now;
OnExecutionStarted(executionToken, startTime, state);
try
{
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
using (var cmd = new SqlCommand())
{
cmd.Connection = con;
executionToken.PopulateCommand(cmd, DefaultCommandTimeout);
var rows = await implementation(cmd).ConfigureAwait(false);
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(executionToken, startTime, DateTimeOffset.Now, rows, state);
return(rows);
}
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionCanceled(executionToken, startTime, DateTimeOffset.Now, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
/// <summary>
/// Executes the specified operation asynchronously.
/// </summary>
/// <param name="executionToken"></param>
/// <param name="implementation"></param>
/// <param name="cancellationToken"></param>
/// <param name="state"></param>
/// <returns></returns>
protected override async Task<int?> ExecuteAsync(CommandExecutionToken<OleDbCommand, OleDbParameter> executionToken, CommandImplementationAsync<OleDbCommand> implementation, CancellationToken cancellationToken, object state)
{
if (executionToken == null)
throw new ArgumentNullException("executionToken", "executionToken is null.");
if (implementation == null)
throw new ArgumentNullException("implementation", "implementation is null.");
var currentToken = executionToken as AccessCommandExecutionToken;
if (currentToken == null)
throw new ArgumentNullException("executionToken", "only AccessCommandExecutionToken is supported.");
var startTime = DateTimeOffset.Now;
try
{
using (var con = await CreateConnectionAsync(cancellationToken).ConfigureAwait(false))
{
int? rows = null;
while (currentToken != null)
{
OnExecutionStarted(currentToken, startTime, state);
using (var cmd = new OleDbCommand())
{
cmd.Connection = con;
if (DefaultCommandTimeout.HasValue)
cmd.CommandTimeout = (int)DefaultCommandTimeout.Value.TotalSeconds;
cmd.CommandText = currentToken.CommandText;
cmd.CommandType = currentToken.CommandType;
foreach (var param in currentToken.Parameters)
cmd.Parameters.Add(param);
currentToken.ApplyCommandOverrides(cmd);
if (currentToken.ExecutionMode == AccessCommandExecutionMode.Materializer)
rows = await implementation(cmd);
else if (currentToken.ExecutionMode == AccessCommandExecutionMode.ExecuteScalarAndForward)
currentToken.ForwardResult(await cmd.ExecuteScalarAsync());
else
rows = await cmd.ExecuteNonQueryAsync();
executionToken.RaiseCommandExecuted(cmd, rows);
OnExecutionFinished(currentToken, startTime, DateTimeOffset.Now, rows, state);
}
currentToken = currentToken.NextCommand;
}
return rows;
}
}
catch (Exception ex)
{
if (cancellationToken.IsCancellationRequested) //convert Exception into a OperationCanceledException
{
var ex2 = new OperationCanceledException("Operation was canceled.", ex, cancellationToken);
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex2, state);
throw ex2;
}
else
{
OnExecutionError(executionToken, startTime, DateTimeOffset.Now, ex, state);
throw;
}
}
}
