[pgjdbc/pgjdbc] f0deab: fix: named statements were used when fetchSize was...

Branch: refs/heads/master
Home: https://github.com/pgjdbc/pgjdbc
Commit: f0deabf7d87bb5bffeb84e9cd686eeb632aa9687
https://github.com/pgjdbc/pgjdbc/commit/f0deabf7d87bb5bffeb84e9cd686eeb632aa9687
Author: Vladimir Sitnikov <sitnikov(dot)vladimir(at)gmail(dot)com>
Date: 2017-07-24 (Mon, 24 Jul 2017)

Changed paths:
M pgjdbc/src/main/java/org/postgresql/core/v3/QueryExecutorImpl.java
A pgjdbc/src/test/java/org/postgresql/test/jdbc2/ConcurrentStatementFetch.java
M pgjdbc/src/test/java/org/postgresql/test/jdbc2/Jdbc2TestSuite.java
M pgjdbc/src/test/java/org/postgresql/test/jdbc2/PreparedStatementTest.java

Log Message:
-----------
fix: named statements were used when fetchSize was non-zero and prepareThreshold=0 (#870)

Non-zero fetchSize triggers use of named portals (for subsequent fetch requests),
however named portals does not require to use named statements.

As per PostgreSQL documentation, named portals are automatically closed as transaction completes, so named portals should play well with transaction-based poolers.

fixes #869