[ https://issues.apache.org/jira/browse/JENA-1939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
František Kučera updated JENA-1939: ----------------------------------- Summary: getUpdateCount() in the JDBC driver returns incorrect value - it looks like there are always more results (infinite loop) (was: getUpdateCount() in the JDBC driver returns incorrect value - it looks that there are always more results (infinite loop)) > getUpdateCount() in the JDBC driver returns incorrect value - it looks like > there are always more results (infinite loop) > ------------------------------------------------------------------------------------------------------------------------- > > Key: JENA-1939 > URL: https://issues.apache.org/jira/browse/JENA-1939 > Project: Apache Jena > Issue Type: Bug > Components: JDBC > Reporter: František Kučera > Priority: Major > Attachments: jena-jdbc-updateCount-patch-01.diff > > > Method {{JenaStatement.getUpdateCountn()}} returns 0. But > [java.sql.Statement|https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#getUpdateCount--] > says: > ??Returns: the current result as an update count; -1 if the current result is > a ResultSet object or there are no more results?? > Returning correct value is important because a single statement may have > multiple result sets and cause mutiple updates (not only multiple updated > records, but multiple sets of updated records). > Applications (e.g. [SQL-DK|http://sql-dk.globalcode.info/]) iterate over > these multiple results and need to know when finish. The > [getMoreResults()|https://docs.oracle.com/javase/8/docs/api/java/sql/Statement.html#getMoreResults--] > documentation says: > ??There are no more results when the following is true: > ((stmt.getMoreResults() == false) && (stmt.getUpdateCount() == -1)) > ?? > But if 0 is returned, the application enters infinite loop. > I think that attached patch could resolve this issue. > P.S. Is there a way to return actual count of updated records? > ({{UpdateProcessor.execute()}} returns void). -- This message was sent by Atlassian Jira (v8.3.4#803005)