Duke Fast Deduplication: java.lang.UnsupportedOperationException: Operation not yet supported?

I'm trying to use the Duke Fast Deduplication Engine to search for some duplicate records in the database at the company where I work.

I run it from the command line like this:

java -cp "C:\utils\duke-0.6\duke-0.6.jar;C:\utils\duke-0.6\lucene-core-3.6.1.jar" no.priv.garshol.duke.Duke --showmatches --verbose .\config.xml

But I get an error:

Exception in thread "main" java.lang.UnsupportedOperationException: Operation no
t yet supported
        at sun.jdbc.odbc.JdbcOdbcResultSet.isClosed(Unknown Source)
        at no.priv.garshol.duke.datasources.JDBCDataSource$JDBCIterator.close(JD
BCDataSource.java:115)
        at no.priv.garshol.duke.Processor.deduplicate(Processor.java:152)
        at no.priv.garshol.duke.Duke.main_(Duke.java:135)
        at no.priv.garshol.duke.Duke.main(Duke.java:38)

My configuration file looks like this:

<duke>
   <schema>
         <threshold>0.82</threshold>
         <maybe-threshold>0.80</maybe-threshold>
         <path>test</path>

         <property type="id">
              <name>ID</name>
         </property>

         <property>
             <name>LNAME</name>
             <comparator>no.priv.garshol.duke.comparators.ExactComparator</comparator>
             <low>0.6</low>
             <high>0.8</high>
         </property>

         <property>
             <name>FNAME</name>
             <comparator>no.priv.garshol.duke.comparators.ExactComparator</comparator>
             <low>0.6</low>
             <high>0.8</high>
         </property>

         <property>
             <name>MNAME</name>
             <comparator>no.priv.garshol.duke.comparators.ExactComparator</comparator>
             <low>0.3</low>
             <high>0.5</high>
         </property>

         <property>
             <name>SSN</name>
             <comparator>no.priv.garshol.duke.comparators.ExactComparator</comparator>
             <low>0.0</low>
             <high>1.0</high>
         </property>

   </schema>
   <jdbc>
          <param name="driver-class" value="sun.jdbc.odbc.JdbcOdbcDriver" />
          <param name="connection-string" value="jdbc:odbc:VT_DeDupe" />
          <param name="user-name" value="aleer" />
          <param name="password" value="**" />
          <param name="query" value="select SocialSecurityNumber, LastName, FirstName, MiddleName, empssn from T_Employees" />

          <column name="SocialSecurityNumber" property="ID" />
          <column name="LastName" property="LNAME" />
          <column name="FirstName" property="FNAME" />
          <column name="MiddleName" property="MNAME" />
          <column name="empssn" property="SSN" />
   </jdbc>
</duke>

It doesn't really tell me what is unsupported...I'm just trying it out, nothing serious with the configuration yet.

As mbonaci says, the problem is that the JDBC driver's isClosed() method is not implemented. This even though implementing it would be no harder than simply writing "return closed".

I added an ugly workaround for this issue now. Please do an "hg pull" and try again.