protected override void OnExecutionTokenPrepared(ExecutionTokenPreparedEventArgs e)
{
if (e == null)
{
throw new ArgumentNullException(nameof(e), $"{nameof(e)} is null.");
}
var token = e.ExecutionToken as SqlServerCommandExecutionToken;
if (token == null)
{
throw new NotSupportedException($"This type of command builder does not support SQL Dependency, which is required for the {nameof(NotifyChangeAppender<TResult>)}.");
}
token.AddChangeListener(m_EventHandler);
}
/// <summary>
/// Override this if you want to examine or modify the execution token before the DBCommand object is built.
/// </summary>
/// <param name="e">The <see cref="ExecutionTokenPreparedEventArgs"/> instance containing the event data.</param>
protected virtual void OnExecutionTokenPrepared(ExecutionTokenPreparedEventArgs e)
{
}
void PreviousLink_ExecutionTokenPrepared(object?sender, ExecutionTokenPreparedEventArgs e)
{
OnExecutionTokenPrepared(e); //left first
ExecutionTokenPrepared?.Invoke(this, e); //then right
e.ExecutionToken.CommandBuilt += ExecutionToken_CommandBuilt;
}
/// <summary>
/// Raises the <see cref="ExecutionTokenPrepared" /> event.
/// </summary>
/// <param name="e">The <see cref="ExecutionTokenPreparedEventArgs"/> instance containing the event data.</param>
protected void OnExecutionTokenPrepared(ExecutionTokenPreparedEventArgs e)
{
ExecutionTokenPrepared?.Invoke(this, e);
}
void OnExecutionTokenPrepared(object?sender, ExecutionTokenPreparedEventArgs e)
{
ExecutionTokenPrepared?.Invoke(sender, e);
}
