Added getResultNoThrow as the AsyncDBCOnnection doesn't like exceptions.

pglablib/ASyncDBConnection.cpp

@@ -138,7 +138,7 @@ void ASyncDBConnection::async_query_handler(boost::system::error_code ec, std::s
         bool finished = false;
         if (m_connection.consumeInput()) {
             while ( ! finished && ! m_connection.isBusy()) {
-                auto res = m_connection.getResult();
+				auto res = m_connection.getResultNoThrow();
                 qint64 ms = m_timer.restart();
                 on_result(res, ms);
                 if (res == nullptr) {

pgsql/Pgsql_Connection.cpp

@@ -159,6 +159,17 @@ std::shared_ptr<Result> Connection::getResult()
 	}
 }
 
+std::shared_ptr<Result> Connection::getResultNoThrow()
+{
+	PGresult *r = PQgetResult(conn);
+	if (r) {
+		return std::make_shared<Result>(r);
+	}
+	else {
+		return nullptr;
+	}
+}
+
 bool Connection::consumeInput()
 {
 	int res = PQconsumeInput(conn);

pgsql/Pgsql_Connection.h

@@ -98,6 +98,7 @@ namespace Pgsql {
 		bool sendQueryParams(const char * command, const Params &params);
 
 		std::shared_ptr<Result> getResult();
+		std::shared_ptr<Result> getResultNoThrow();
 
 		bool consumeInput();
 		bool isBusy();