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HPCCPreparedStatement not accepting Long/Integer as params

Topics around the use of the JDBC driver for HPCC Systems

Tue Aug 02, 2016 3:46 pm Change Time Zone


Trying to run the following example code...
Code: Select all
String myprepsql = "select k,s from ajp::temp::ds persons where k >= ? and k <= ?";
HPCCPreparedStatement prepstmt = (HPCCPreparedStatement)connection.prepareStatement(myprepsql);
prepstmt.setLong(1, (long)1);
prepstmt.setLong(2, (long)5);
HPCCResultSet qrs = (HPCCResultSet) ((HPCCPreparedStatement) prepstmt).executeQuery();
while( {

I get the following error message...
java.sql.SQLException: java.lang.Long cannot be cast to java.lang.String
at org.hpccsystems.jdbcdriver.HPCCPreparedStatement.executeQuery(

When looking at the HPCCPreparedStatement code it looks like any parameter passed in is type cast to a String. I'm wondering if this is something that could be changed in a future update?

Posts: 2
Joined: Tue Aug 02, 2016 3:23 pm

Tue Aug 09, 2016 3:28 pm Change Time Zone

Aaron, I'm glad to see you got your project building.
Thanks for bringing up this issue, I'm currently working on the primitive type binding and will have a solution very soon. In the meantime you can add yourself as a watcher to this Jira so you can follow the progress. Thanks

Update, just noticed you were the original reporter of the issue... the fix has been submitted and will the reviewed shortly. If you're in a hurry you can pull the commit from my repo: ... ypeBinding
Posts: 29
Joined: Tue Jun 10, 2014 2:19 pm

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