feat: add support for fetching 'TIMESTAMP(6) WITHOUT TIME ZONE' as Lo…

…calDate to getObject() (#1083)

pgjdbc/src/main/java/org/postgresql/jdbc/PgResultSet.java

@@ -3371,6 +3371,12 @@ public void updateArray(String columnName, Array x) throws SQLException {
           return type.cast(LocalDate.MIN);
         }
         return type.cast(dateValue.toLocalDate());
+      } else if (sqlType == Types.TIMESTAMP) {
+        LocalDateTime localDateTimeValue = getLocalDateTime(columnIndex);
+        if (wasNull()) {
+          return null;
+        }
+        return type.cast(localDateTimeValue.toLocalDate());
       } else {
         throw new PSQLException(GT.tr("conversion to {0} from {1} not supported", type, sqlType),
                 PSQLState.INVALID_PARAMETER_VALUE);

pgjdbc/src/test/java/org/postgresql/test/jdbc42/GetObject310Test.java

@@ -214,6 +214,10 @@ public void localTimestamps(ZoneId zoneId, String timestamp) throws SQLException
         LocalDateTime localDateTime = LocalDateTime.parse(timestamp);
         assertEquals(localDateTime, rs.getObject("timestamp_without_time_zone_column", LocalDateTime.class));
         assertEquals(localDateTime, rs.getObject(1, LocalDateTime.class));
+
+        //Also test that we get the correct values when retrieving the data as LocalDate objects
+        assertEquals(localDateTime.toLocalDate(), rs.getObject("timestamp_without_time_zone_column", LocalDate.class));
+        assertEquals(localDateTime.toLocalDate(), rs.getObject(1, LocalDate.class));
       } finally {
         rs.close();
       }