0002588: Servlet loads class before amber

2588

minor

always

04-09-08 10:43

04-09-08 18:52

Reporter:

emil

Platform:

Assigned To:

ferg

OS:

Priority:

normal

OS Version:

Status:

closed

Product Version:

3.1.6

Product Build:

Resolution:

fixed

Projection:

none

ETA:

none

Fixed in Version:

3.1.6

Summary:

0002588: Servlet loads class before amber

Description:

(Reported by Riccardo Cohen)

A servlet that uses a persisted class is loading the class before amber can. This has not been replicated on Linux, but Mac OS X with Java 1.5.0_13 seems to exhibit the problem. See the attached war file.

Steps To Reproduce:

Additional Information:

Additional info by Riccardo:

I found something interesting : if you comment the code where Ejbuser is
used in Adlservice (see file joined) then the illegual instance class error
disappear, even if in the last function there is a List<Ejbuser> that does
not seem to be a problem.
It seems that it happens only when an object has to be used in my code...

package adlhessian;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.UserTransaction;
import javax.webbeans.In;

import com.caucho.hessian.server.HessianServlet;

public class Adlservice extends HessianServlet
{
  @PersistenceContext(name="adlhessian") private EntityManager m_manager;
  @In private UserTransaction m_ut;

  //@TransactionAttribute
  public boolean setusername(int userid,String newname)
  {
    boolean success=false;
    try
    {
      m_ut.begin(); // must be called before find() or createQuery()
      /*
      Ejbuser user=m_manager.find(Ejbuser.class,userid);
      if (user!=null)
      {
        user.setName(newname);
        success=true;
      }
      */
    }
    catch(Exception ex)
      {ex.printStackTrace();}
    finally
    {
      try{m_ut.commit();}catch(Exception ex){ex.printStackTrace();}
    }
    return(success);
  }

  public Ejbuser getuser(int userid)
  {
    Ejbuser ret=null;
    try
    {
      /*
      Ejbuser user=(Ejbuser)m_manager.find(Ejbuser.class,userid);
      if (user!=null)
        ret=user;
        */
    }
    catch(Exception ex)
      {ex.printStackTrace();}
    return ret;
  }

  public boolean adduser(Ejbuser newuser)
  {
    boolean success=false;
    try
    {
      m_ut.begin(); // must be called before find() or createQuery()
      /*
      Ejbuser user=new Ejbuser();
      user=newuser;
      m_manager.persist(user);
      */
    }
    catch(Exception ex)
      {ex.printStackTrace();}
    finally
    {
      try{m_ut.commit();}catch(Exception ex){ex.printStackTrace();}
    }
    return(success);
  }

  public List<String> getallusers()
  {
    List<String> ret=new ArrayList<String>();
    try
    {
      javax.persistence.Query hqr=m_manager.createQuery("select h from Ejbuser h");
      List<Ejbuser> list=(List<Ejbuser>)hqr.getResultList();
      int idx;
      for (idx=0;idx<list.size();idx++)
        ret.add(list.get(idx).getName());
    }
    catch(Exception ex)
      {ex.printStackTrace();}
    return(ret);
  }

}

Relationships

Attached Files:

amber.war [^] (677,869 bytes) 04-09-08 10:43

Mantis - Resin
Viewing Issue Advanced Details

ID:	Category:	Severity:	Reproducibility:	Date Submitted:	Last Update:
2588		minor	always	04-09-08 10:43	04-09-08 18:52

Reporter:	emil	Platform:
Assigned To:	ferg	OS:
Priority:	normal	OS Version:
Status:	closed	Product Version:	3.1.6
Product Build:		Resolution:	fixed
Projection:	none
ETA:	none	Fixed in Version:	3.1.6

Summary:	0002588: Servlet loads class before amber
Description:	(Reported by Riccardo Cohen) A servlet that uses a persisted class is loading the class before amber can. This has not been replicated on Linux, but Mac OS X with Java 1.5.0_13 seems to exhibit the problem. See the attached war file.
Steps To Reproduce:
Additional Information:	Additional info by Riccardo: I found something interesting : if you comment the code where Ejbuser is used in Adlservice (see file joined) then the illegual instance class error disappear, even if in the last function there is a List<Ejbuser> that does not seem to be a problem. It seems that it happens only when an object has to be used in my code... package adlhessian; import java.util.ArrayList; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.transaction.UserTransaction; import javax.webbeans.In; import com.caucho.hessian.server.HessianServlet; public class Adlservice extends HessianServlet { @PersistenceContext(name="adlhessian") private EntityManager m_manager; @In private UserTransaction m_ut; //@TransactionAttribute public boolean setusername(int userid,String newname) { boolean success=false; try { m_ut.begin(); // must be called before find() or createQuery() /* Ejbuser user=m_manager.find(Ejbuser.class,userid); if (user!=null) { user.setName(newname); success=true; } / } catch(Exception ex) {ex.printStackTrace();} finally { try{m_ut.commit();}catch(Exception ex){ex.printStackTrace();} } return(success); } public Ejbuser getuser(int userid) { Ejbuser ret=null; try { / Ejbuser user=(Ejbuser)m_manager.find(Ejbuser.class,userid); if (user!=null) ret=user; / } catch(Exception ex) {ex.printStackTrace();} return ret; } public boolean adduser(Ejbuser newuser) { boolean success=false; try { m_ut.begin(); // must be called before find() or createQuery() / Ejbuser user=new Ejbuser(); user=newuser; m_manager.persist(user); */ } catch(Exception ex) {ex.printStackTrace();} finally { try{m_ut.commit();}catch(Exception ex){ex.printStackTrace();} } return(success); } public List<String> getallusers() { List<String> ret=new ArrayList<String>(); try { javax.persistence.Query hqr=m_manager.createQuery("select h from Ejbuser h"); List<Ejbuser> list=(List<Ejbuser>)hqr.getResultList(); int idx; for (idx=0;idx<list.size();idx++) ret.add(list.get(idx).getName()); } catch(Exception ex) {ex.printStackTrace();} return(ret); } }
Relationships
Attached Files:	amber.war [^] (677,869 bytes) 04-09-08 10:43