Jeff,

Here is my code for ResultSet TypeHandlerCallback.


       public Object getResult(ResultGetter getter) throws SQLException
      {
         logger.info("Entered getResult(ResultGetter getter)");
         Object xmlDocument = null;
         ResultSet rs = getter.getResultSet();
       
          if (Proxy.isProxyClass(rs.getClass()))
         {
           InvocationHandler ih = Proxy. getInvocationHandler(rs);
           if (ih instanceof ResultSetLogProxy)
           {
               ResultSet realResultSet = ((ResultSetLogProxy) ih).getRs();
               OracleResultSet ors = (OracleResultSet) realResultSet;
               OPAQUE opaqueValue = null;
               if (getter.getColumnName() != null)
               {
                   opaqueValue = ors.getOPAQUE(getter.getColumnName());
               }
               else
               {
                   opaqueValue = ors.getOPAQUE(getter.getColumnIndex());
               }
              if (opaqueValue != null)
              {
                  XMLType xmlResult = XMLType.createXML(opaqueValue);
                  xmlDocument = xmlResult.getDOM();
              }
              else
              {
                  xmlDocument = null;
              }
           }
         }
         else
         {
             logger.error("ResultSet class is not Proxy class");
             xmlDocument = null;
         }
         return xmlDocument;
       }


I have ibatis-2.3.0.677.jar and I have tried with both log4j-1.2.8.jar and log4j-1.2.13.jar as well. But as long as I keep the log level to DEBUG it works fine. If I change it to either INFO or ERROR,  I am getting error on reading resultset for XML datatype

[29 Apr 2008 11:58:33] INFO  [XMLTypeHandlerCallback] Entered getResult(ResultGetter getter)
     [exec] [29 Apr 2008 11:58:33] ERROR [XMLTypeHandlerCallback] ResultSet class is not Proxy class
     [exec] [29 Apr 2008 11:58:33] INFO  [XMLTypeHandlerCallback] Entered getResult(ResultGetter getter)
     [exec] [29 Apr 2008 11:58:33] ERROR [XMLTypeHandlerCallback] ResultSet class is not Proxy class
     [exec] java.lang.NullPointerException
     [exec]         at org.jdom.input.DOMBuilder.buildTree(DOMBuilder.java:166)
     [exec]         at org.jdom.input.DOMBuilder.build(DOMBuilder.java:135):


How do I fix it for log level ERROR or INFO?

Thanks
Jasmin




"Jeff Butler" <jeffgbutler@gmail.com>

12/26/2007 10:30 PM
Please respond to
user-java@ibatis.apache.org

To
user-java@ibatis.apache.org
cc
Subject
Re: Exception "XMLType mapping only supported for Oracle RDBMS"





Here's how to get the real resultset from a the proxied class:
 

public Object getResult(ResultGetter getter) throws SQLException {
 ResultSet rs = getter.getResultSet();

 if
(Proxy.isProxyClass(rs.getClass())) {
   InvocationHandler ih = Proxy. getInvocationHandler(rs);

   if
(ih instanceof ResultSetLogProxy) {
     ResultSet realResultSet = ((ResultSetLogProxy) ih).getRs();
     // do something here...
   }
 }
}

It's ugly - but it works.

Jeff Butler

On Dec 26, 2007 11:37 AM, <Jasmin_Mehta@nexweb.org> wrote:

Jeff,


I did read your posting at
http://www.mail-archive.com/user-java@ibatis.apache.org/msg06898.html  already before sending this question. I could not understand how/where do I modify the code to consider proxy class.

My getOpaqueValue() displays ResultSet class is: $Proxy2, not ResultSetLogProxy.


The program DOES WORK if I turn off logging.


I tried something like this:


 public Object getResult(ResultGetter getter) throws SQLException {

   //    if (getter.getResultSet() instanceof OracleResultSet) {

           OPAQUE opaqueValue = getOpaqueValue(getter);

           if (opaqueValue != null) {

               XMLType xmlResult = XMLType.createXML (opaqueValue);

               return xmlResult.getDOM();

           } else {

               return null;
           }

    //   } else {

     //      throw new UnsupportedOperationException("XMLType mapping only supported for Oracle RDBMS");
     //  }

   }



   private OPAQUE getOpaqueValue(ResultGetter getter) throws SQLException {


         
         java.sql.ResultSet rs = getter.getResultSet();

         System.out.println("ResultSet class is: " + rs.getClass());

   //       ResultSetLogProxy rsProx =  (ResultSetLogProxy)rs;
         OracleResultSet ors = (OracleResultSet)ResultSetLogProxy.newInstance(rs);         //--- THROWS ClassCastException

         OPAQUE op = null;

         if (getter.getColumnName() != null) {

             op = ors.getOPAQUE(getter.getColumnName());

         } else {

             op = ors.getOPAQUE(getter.getColumnIndex());

         }

         return op;

     }



Thanks




"Jeff Butler" <jeffgbutler@gmail.com>

12/26/2007 12:24 PM
Please respond to

user-java@ibatis.apache.org


To
user-java@ibatis.apache.org
cc
Subject
Re: Exception "XMLType mapping only supported for Oracle RDBMS"






The code in the wiki article does not take into account the fact that iBATIS logging changes the normal classes to proxy classes.  First thing to do is turn off logging to see it will work.  Second thing, the code must be modified to account for the proxy class if logging is enabled (add another instanceof check for the proxy class, then unwind the embedded "real" class).
 
See here for more information:
 

http://www.mail-archive.com/user-java@ibatis.apache.org/msg06898.html
 
Jeff Butler



On Dec 26, 2007 10:26 AM, <
Jasmin_Mehta@nexweb.org> wrote:

I am using code as directed in this url:


http://opensource.atlassian.com/confluence/oss/display/IBATIS/XMLTypeHandlerCallback.java

It throw UnsupportedOperationException("XMLType mapping only supported for Oracle RDBMS");

I have logger set to DEBUG  mode.


I tried displaying class from ResultSet like :

       java.sql.ResultSet rs = getter.getResultSet();

       System.out.println("ResultSet class is: " + rs.getClass());


The cosole displays

[20 Dec 2007 15:15:05] DEBUG [PreparedStatement] {pstm-100001} Executing Statement:         SELECT OTM, SEQUENCE, MESSAGETYPE, MESSAGEID, STATUS, PROCESSED_TIME, CREATED     FROM OTM_XML  
[20 Dec 2007 15:15:05] DEBUG [PreparedStatement] {pstm-100001} Parameters: []

[20 Dec 2007 15:15:05] DEBUG [PreparedStatement] {pstm-100001} Types: []

[20 Dec 2007 15:15:05] DEBUG [ResultSet] {rset-100002} ResultSet

ResultSet class is: class $Proxy2


I am using JDeveloper
10.1.3.1

What should I change in my code to make it working?

Thanks

******************************************************************************
ATTENTION ATTENTION ATTENTION ATTENTION ATTENTION

Our domain name is changing.  Please take note of the sender's
e-Mail address and make changes to your personal address list,
if needed.  Both domains will continue to work, only for a limited
time.
******************************************************************************
This email and any files transmitted with it are intended solely for
the use of the individual or agency to whom they are addressed.
If you have received this email in error please notify the Navy
Exchange Service Command e-mail administrator. This footnote
also confirms that this email message has been scanned for the
presence of computer viruses.

Thank You!            
******************************************************************************