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fix: the way how we test if there is a connection issue 

If there is a connection issue then PQexec returns a resultset now
- older versions of PostgreSQL returned null pointer.
This commit is contained in:
Tomasz Sowa 2022-05-25 19:11:42 +02:00
parent 12232bf722
commit 0ce7578de3
2 changed files with 9 additions and 7 deletions
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2
src/modelenv.h
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@ -5,7 +5,7 @@
*/ */
/* /*
* Copyright (c) 2019-2021, Tomasz Sowa * Copyright (c) 2019-2022, Tomasz Sowa
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without

14
src/postgresqlconnector.cpp
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@ -97,13 +97,15 @@ bool PostgreSQLConnector::do_query(const char * query_str, PostgreSQLQueryResult
psql_result->psql_result = PQexec(pg_conn, query_str); psql_result->psql_result = PQexec(pg_conn, query_str);
if( !psql_result->psql_result ) /*
* in older versions of PostgreSQL when there was a connection issue then the psql_result pointer would be null
*
*/
if( !psql_result->psql_result || PQstatus(pg_conn) != CONNECTION_OK )
{ {
if( PQstatus(pg_conn) != CONNECTION_OK ) psql_result->clear();
{ assert_connection_is_working();
assert_connection_is_working(); psql_result->psql_result = PQexec(pg_conn, query_str);
psql_result->psql_result = PQexec(pg_conn, query_str);
}
} }
if( psql_result->psql_result ) if( psql_result->psql_result )