public void Poll()
{
try
{
var columns = String.IsNullOrWhiteSpace(SQLColumns) ? "*" : String.Join(",", SQLColumns.Split(',').Select(c => SQLHelpers.AddColumnQuotes(c)));
using (SqlDataAdapter a = new SqlDataAdapter(string.Format("SELECT {2} FROM {0} WHERE @checkpoint IS NULL OR {1} > @checkpoint ORDER BY {1}",
SQLHelpers.AddTableQuotes(SQLTable), SQLHelpers.AddColumnQuotes(SQLTimestampColumn), columns), connection))
{
a.SelectCommand.Parameters.AddWithValue("@checkpoint", this.LastTimestamp ?? DBNull.Value);
DataTable t = new DataTable();
a.Fill(t);
if (t.Rows.Count > 0)
{
this.LastTimestamp = t.Rows[t.Rows.Count - 1][SQLTimestampColumn];
}
IList <IDictionary <string, object> > rtr = new List <IDictionary <string, object> >();
foreach (DataRow row in t.Rows)
{
IDictionary <string, object> r = new Dictionary <string, object>();
foreach (DataColumn col in t.Columns)
{
r.Add(col.ColumnName, row[col]);
}
rtr.Add(r);
}
if (rtr.Count > 0)
{
this.OnPublish?.Invoke(this, new OnPublishArgs(rtr.ToArray(), "Output"));
}
}
}
catch (Exception ex)
{
this.OnPublishError?.Invoke(this, new OnErrorArgs(this.UniqueId, DateTime.UtcNow, "XMPro.SQLAgents.Listener.Poll", ex.Message, ex.InnerException?.ToString() ?? ""));
}
}
public void Poll()
{
try
{
var columns = String.IsNullOrWhiteSpace(SQLColumns) ? "*" : String.Join(",", SQLColumns.Split(',').Select(c => SQLHelpers.AddColumnQuotes(c)));
var sql = string.Format("SELECT {0} {1} FROM {2} {3} {4}", TopClause, columns, SQLHelpers.AddTableQuotes(SQLTable), WhereClause, SortClause);
using (SqlDataAdapter a = new SqlDataAdapter(sql, connection))
{
DataTable dt = new DataTable();
a.Fill(dt);
IList <IDictionary <string, object> > rtr = new List <IDictionary <string, object> >();
foreach (DataRow row in dt.Rows)
{
IDictionary <string, object> r = new Dictionary <string, object>();
foreach (DataColumn col in dt.Columns)
{
r.Add(col.ColumnName, row[col]);
}
rtr.Add(r);
}
if (rtr.Count > 0)
{
this.OnPublish?.Invoke(this, new OnPublishArgs(rtr.ToArray(), "Output"));
}
}
}
catch (Exception ex)
{
this.OnPublishError?.Invoke(this, new OnErrorArgs(this.UniqueId, DateTime.UtcNow, "XMPro.SQLAgents.ContextProvider.Poll", ex.Message, ex.InnerException?.ToString() ?? ""));
}
}