private static void BeginQuery(object sender, QueryTraceEventArgs e)
{
var store = Store;
var metadata = MakeMetadata(e);
store.List.Enqueue(metadata);
store.Dictionary.TryAdd(e.Token, metadata);
metadata.Stopwatch.Start();
}
/// <summary>
/// Invokes the query end event.
/// </summary>
/// <param name="e">The <see cref="Passive.Diagnostics.QueryTraceEventArgs"/> instance containing the event data.</param>
internal static void InvokeQueryEnd(QueryTraceEventArgs e)
{
var handler = QueryEnd;
if (handler != null)
{
handler(null, e);
}
}
/// <summary>
/// Invokes the query end event.
/// </summary>
/// <param name="e">The <see cref="Passive.Diagnostics.QueryTraceEventArgs"/> instance containing the event data.</param>
internal static void InvokeQueryEnd(QueryTraceEventArgs e)
{
var handler = QueryEnd;
if (handler != null)
{
handler(null, e);
}
}
private static GlimpsePassiveMetadata MakeMetadata(QueryTraceEventArgs e)
{
return new GlimpsePassiveMetadata
{
Sql = e.Sql,
Arguments = e.Arguments.ToArray(),
Context = e.Context,
Stopwatch = new Stopwatch()
};
}
/// <summary>
/// Returns a single result
/// </summary>
public object Scalar(DynamicCommand command)
{
var queryTraceEventArgs = new QueryTraceEventArgs(command.Sql, command.Arguments, command.Context);
QueryTrace.InvokeQueryBegin(queryTraceEventArgs);
using (var conn = this.OpenConnection())
{
var scalar = this.CreateDbCommand(command, connection: conn).ExecuteScalar();
QueryTrace.InvokeQueryEnd(queryTraceEventArgs);
return scalar;
}
}
/// <summary>
/// Enumerates the reader yielding the results
/// </summary>
public IEnumerable<object> Query(DynamicCommand command)
{
var queryTraceEventArgs = new QueryTraceEventArgs(command.Sql, command.Arguments, command.Context);
QueryTrace.InvokeQueryBegin(queryTraceEventArgs);
using (var conn = this.OpenConnection())
{
var dbCommand = this.CreateDbCommand(command, connection: conn);
using (var rdr = dbCommand.ExecuteReader(CommandBehavior.CloseConnection))
{
QueryTrace.InvokeQueryEnd(queryTraceEventArgs);
while (rdr.Read())
{
var d = (IDictionary<string, object>) new ExpandoObject();
for (var i = 0; i < rdr.FieldCount; i++)
{
var value = rdr[i];
d.Add(rdr.GetName(i), DBNull.Value.Equals(value) ? null : value);
}
yield return d;
}
}
}
}
private static void EndQuery(object sender, QueryTraceEventArgs e)
{
var metadata = Store.Dictionary[e.Token];
metadata.Stopwatch.Stop();
}
