Npgsql.NpgsqlConnector.ReleasePlansPortals C# (CSharp) Method

        internal void ReleasePlansPortals()
        {
            Int32 i = 0;

            if (_planIndex > 0)
            {
                for (i = 1; i <= _planIndex; i++)
                {
                    try
                    {
                        NpgsqlCommand.ExecuteBlind(this, String.Format("DEALLOCATE \"{0}{1}\";", _planNamePrefix, i), -1);
                    }
                    // Ignore any error which may occur when releasing portals as this portal name may not be valid anymore. i.e.: the portal name was used on a prepared query which had errors.
                    catch {}
                }
            }

            _portalIndex = 0;
            _planIndex = 0;
        }

        /// <summary>
        /// Put a pooled connector into the pool queue.
        /// </summary>
        /// <param name="Connector">Connector to pool</param>
        private void UngetPooledConnector(NpgsqlConnection Connection, NpgsqlConnector Connector)
        {
            ConnectorQueue           Queue;

            // Find the queue.
            Queue = (ConnectorQueue)PooledConnectors[Connector.ConnectionString.ToString()];

            if (Queue == null)
            {
                throw new InvalidOperationException("Internal: No connector queue found for existing connector.");
            }

            Connector.CertificateSelectionCallback -= Connection.CertificateSelectionCallbackDelegate;
            Connector.CertificateValidationCallback -= Connection.CertificateValidationCallbackDelegate;
            Connector.PrivateKeySelectionCallback -= Connection.PrivateKeySelectionCallbackDelegate;

            Queue.UseCount--;

            if (! Connector.IsInitialized)
            {
                if (Connector.Transaction != null)
                {
                    Connector.Transaction.Cancel();
                }

                Connector.Close();
            }
            else
            {
                if (Connector.Transaction != null)
                {
                    try
                    {
                        Connector.Transaction.Rollback();
                    }
                    catch {
                        Connector.Close()
                        ;
                    }
                }
        }

        if (Connector.State == System.Data.ConnectionState.Open)
            {
                // Release all plans and portals associated with this connector.
                Connector.ReleasePlansPortals();

                Queue.Enqueue(Connector);
            }
        }