UserTransaction doesn't rollback (JOTM)

Question

I'm running tomcat 5.5 with SQL Server 2000. I'm working on adding transaction support through UserTransaction with JOTM.
I installed JOTM, a Transcation Manager, but it doesn't seem to work. When I try to rollback an update, it still commits it.
###My code (snippet):
Connection con = DAOUtil.getConnection();
        String sqlStmt = "INSERT INTO Building (Street, City, State, Zip, CLLI, " +
                       "SWC, ContactName, ContactPhone, CommonName) " +
                       "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
      PreparedStatement saveBuilding = null;
            Context ctx = new InitialContext();
            UserTransaction ut = (UserTransaction)ctx.lookup("java:comp/UserTransaction");
            ut.begin();
            saveBuilding = con.prepareStatement(sqlStmt, Statement.
                                       RETURN_GENERATED_KEYS);
            saveBuilding.setString(1, building.getStreet());
           saveBuilding.execute();
            ut.rollback();       //THIS DOESN'T WORK###Server.xml:
<Server>
<GlobalNamingResources>
   <Resource auth="Container" name="UserTransaction"
                       type="javax.transaction.UserTransaction"
                       jotm.timeout="60"
                       factory="org.objectweb.jotm.UserTransactionFactory" />
      <Resource name="jdbc/cafe"
                           type="javax.sql.DataSource"
                           driverClassName="net.sourceforge.jtds.jdbc.Driver"
                           password="XXX"
                           maxIdle="5"
                           maxWait="300"
                           validationQuery="Select Val From ValueItem"
                           username="ABC"
                           url="jdbc:jtds:sqlserver://SERVER_NAME:1433;
                           DatabaseName=ABCD;"
                           factory="org.objectweb.jndi.DataSourceFactory"
                           maxActive="10" />
</GlobalNamingResources>
</Server>###domain.xml:
<Context displayName="CaFE"
                      docBase="CaFE"
                      path="/CaFE"
                      reloadable="true"
                      workDir="C:\Tomcat-5.5\webapps\CaFE\work">
    <ResourceLink global="UserTransaction"
                               name="UserTransaction"
                              type="javax.transaction.UserTransaction"/>
   <ResourceLink global="jdbc/cafe"
                              name="jdbc/cafe"
                              type="javax.sql.DataSource"/>
</Context>I'm able to read/get the UserTransaction from the JNDI tree. But for some reason the transaction doesn't work.
Any ideas?
Thanks in advance.

Answer 1

SunForumsGuest wrote:
I thought that when you're using UserTransaction that it takes care of setting autoCommit to false. Thats what I read in many places.
Anyway, when I set autoCommit to false and then call commit on the UserTransaction, it doesn't commit.
Connection con = DAOUtil.getConnection();        String sqlStmt = <font color="red">"INSERT INTO Building (Street, City, State, Zip, CLLI, "</font> +                       <font color="red">"SWC, <a href="http://www.blackits.net/el/travel-and-tourism/an-starter-news-regarding-the-several-pigeon-forge.html" class="bodylinkwhite"><font face="tahoma,verdana,sans-serif" size="1" color="#000">ContactName</font></a>, ContactPhone, CommonName) "</font> +                       <font color="red">"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"</font>;      PreparedStatement saveBuilding = <font color="navy"><b>null</b></font>;             Context ctx = <font color="navy"><b>new</b></font> InitialContext();             UserTransaction ut = (UserTransaction)ctx.lookup(<font color="red">"java:comp/UserTransaction"</font>);             ut.begin();
con.setAutoCommit(<font color="navy"><b>false</b></font>);             saveBuilding = con.prepareStatement(sqlStmt, Statement.                                        RETURN_GENERATED_KEYS);                     saveBuilding.setString(1, building.getStreet());            ...            saveBuilding.execute();             ut.commit();       <font color="darkgreen">//THIS DOESN'T WORK</font>
I got more deep understanding about this part, Thanks for your explanation! It's good for reference.