org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1

Question

HI i am using struts and hibernate. i have a parent and child relation using set in hbm. in the action i am using session.saveOrUpdate() method to save but while saving it is showing the below error. can anyone help regardng this with explanation where i made the mistake

here is my hbm.file

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"&gt;

<hibernate-mapping>

 <class name="com.model.cargo" table="cargo">
  <id name="id" column="id" type="java.lang.Long">
   <generator class="increment" />
  </id>
  <property name="cname" column="cname" />
  <property name="cdate" column="cdate" />
  <property name="csource" column="csource" />
  <property name="cdestination" column="cdestination" />
  <property name="create" column="createby" />
  <property name="status" column="status" />

  <set name="itemList" table="item" inverse="true"
   cascade="all-delete-orphan">
   <key>
    <column name="id" />
   </key>
   <one-to-many class="com.model.Item" />
  </set>
 </class>

 <class name="com.model.Item" table="item">
  <id name="itemid" column="itemid" type="java.lang.Long">
   <generator class="increment" />
  </id>
  <property name="itemName" column="itemname" />
  <property name="weight" column="weight" />
  <many-to-one class="com.model.cargo" name="cargo"
   column="id" />
 </class>
</hibernate-mapping>

my action

package com.action;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.beanutils.BeanUtils;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import com.plugin.HibernatePlugIn;
import com.form.cargoForm;
import com.model.cargo;
import com.model.Item;


public class CargoAction extends DispatchAction {


 public ActionForward add(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  if (log.isDebugEnabled()) {
   log.debug("Entering Master add method");
  }

  try {

   cargoForm cargoForm = (cargoForm) form;
   //System.out.println("ID" + cargoForm.getId());
   cargo cargo = new cargo();
   System.out.println("in cargo Action");
   // copy customerform to model
   cargoForm.reset(mapping, request);
   BeanUtils.copyProperties(cargo, cargoForm);
   cargoForm.reset(mapping, request);
  // cargoForm.setInputParam("new");
   // updateFormBean(mapping, request, cargoForm);

  }

  catch (Exception ex) {
   ex.printStackTrace();
   return mapping.findForward("failure");
  }

  return mapping.findForward("success1");
 }

 public ActionForward save(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  SessionFactory sessionFactory=null;
  Session session =null;
  System.out.println("in cargo Action");
  try{
  sessionFactory = (SessionFactory) servlet
    .getServletContext().getAttribute(HibernatePlugIn.KEY_NAME);  
  session = sessionFactory.openSession();
  Transaction tx = session.beginTransaction();

  cargoForm carForm = (cargoForm) form;


  cargo cargo = new cargo();

  System.out.println("in cargo Action");

  BeanUtils.copyProperties(cargo,carForm);
  System.out.println("id"+ carForm.getId()); 
  System.out.println("item id"+ carForm.getItemid()); 
  Set itemset = carForm.getItemDtl();

    System.out.println("size"+itemset.size()); 
    Iterator iterator =itemset.iterator();   
    while(iterator.hasNext()) { 
     Item it = (Item)iterator.next();
    System.out.println("name"+it.getItemName()); //log.debug("HERE");
   it.setCargo(cargo); } 

  cargo.setItemList(itemset);
  System.out.println("size"+ itemset.size()); 
  session.saveOrUpdate("cargo",cargo);
  tx.commit();
  }catch(Exception e){
   e.printStackTrace();
  }
  return mapping.findForward("success");

 }

 public ActionForward search(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {
  System.out.println("in cargo search Action");
  SessionFactory sessionFactory = (SessionFactory) servlet
    .getServletContext().getAttribute(HibernatePlugIn.KEY_NAME);
  HttpSession session1 = request.getSession();
  Session session = sessionFactory.openSession();
  Transaction tx = session.beginTransaction();
  cargoForm cargoform = (cargoForm) form;
  // System.out.println("Name"+cargoForm.getName());
  cargo cargo = new cargo();
  System.out.println("in cargo search Action");
  // copy customerform to model
  BeanUtils.copyProperties(cargo, cargoform);
  String name;
  String status;
  String createby;

  name = cargo.getCname();
  status = cargo.getStatus();
  createby = cargo.getCreate();
  System.out.println("Name..." + name);
  System.out.println("status..." + status);
  System.out.println("createby..." + createby);
  try {
   if ((name.equals("")) && (createby.equals(""))
     && (status.equals("")))
    return mapping.findForward("failure");
   String SQL_QUERY = "from cargo c where c.cname=:name or c.status=:status or c.create=:createby";
   Query query = session.createQuery(SQL_QUERY);
   query.setParameter("name", name);
   query.setParameter("status", status);
   query.setParameter("createby", createby);
   ArrayList al = new ArrayList();
   for (Iterator i = query.iterate(); i.hasNext();) {
    cargo cargo1 = (cargo) i.next();
    al.add(cargo1);
    System.out.println("Cargo ID is:" + cargo1.getId());
   }
   System.out.println("Cargo list is:" + al.size());
   session1.setAttribute("clist", al);
  } catch (Exception e) {
   e.printStackTrace();
   return mapping.findForward("failure");
  }
  System.out.println("search Cargo list is success");

  return mapping.findForward("success");
 }




 public ActionForward edit(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {
  SessionFactory sessionFactory=null;
  Session session =null;
  if (log.isDebugEnabled()) {
   log.debug("Entering Master Edit method");
  }

  try {
   sessionFactory = (SessionFactory) servlet
     .getServletContext().getAttribute(HibernatePlugIn.KEY_NAME);
   session = sessionFactory.openSession();
   Transaction transaction=session.beginTransaction();
   cargoForm carForm = (cargoForm) form;
   // System.out.println(carForm.getStatus());
   // System.out.println(carForm.getCreate());
   cargo cargo = new cargo();
   BeanUtils.copyProperties(cargo, carForm);
      System.out.println("In Cargo Edit "+cargo.getId());
      String qstring = "from cargo c where c.id=:id";
   Query query = session.createQuery(qstring);
   query.setParameter("id", cargo.getId());
   ArrayList all = new ArrayList();
   cargo c = (cargo) query.iterate().next();

   System.out.println("Edit Cargo list " + all.size()); 


     Set purchaseArray = new HashSet();
           System.out.println("Edit"+c.getItemList().size());
           carForm.setItemDtl(purchaseArray);
           BeanUtils.copyProperties(carForm,c);
           // transaction.commit();
            session.flush();
  } catch (Exception e) {
   e.printStackTrace();
   return mapping.findForward("failure");
  }

  // return a forward to edit forward
  System.out.println("Edit Cargo list is success");
  return mapping.findForward("succ");
 }

 public ActionForward delete(ActionMapping mapping, ActionForm form,
   HttpServletRequest request, HttpServletResponse response)
   throws Exception {

  try {
   SessionFactory sessionFactory = (SessionFactory) servlet
     .getServletContext().getAttribute(HibernatePlugIn.KEY_NAME);
   Session session = sessionFactory.openSession();
   Transaction tx = session.beginTransaction();
   cargoForm carForm = (cargoForm) form;
   // System.out.println(carForm.getStatus());
   // System.out.println(carForm.getCreate());
   cargo cargo = new cargo();
   BeanUtils.copyProperties(cargo, carForm);
      System.out.println("In Cargo Delete "+cargo.getId());
   //String qstring = "delete from cargo c where c.id=:id";
   //Query query = session.createQuery(qstring);
   session.delete("cargo",cargo);
     // session.delete(cargo);
     // session.flush();
   //query.setParameter("id", cargo.getId());
   //int row=query.executeUpdate();
   //System.out.println("deleted row"+row);
   tx.commit();

  } catch (Exception e) {
   e.printStackTrace();
   return mapping.findForward("failure");
  }
  // return a forward to edit forward
  System.out.println("Deleted success");
  return mapping.findForward("succes");
 }

}

my parent model

package com.model;

import java.util.HashSet;
import java.util.Set;

public class cargo {

 private Long id;
 private String cname;
 private String cdate;
 private String csource;
 private String cdestination;
 private String create;
 private String status;

 private Set itemList = new HashSet();

 public Long getId() {
  return id;
 }

 public void setId(Long id) {
  this.id = id;
 }

 public String getCname() {
  return cname;
 }

 public void setCname(String cname) {
  this.cname = cname;
 }

 public String getCdate() {
  return cdate;
 }

 public void setCdate(String cdate) {
  this.cdate = cdate;
 }

 public String getCsource() {
  return csource;
 }

 public void setCsource(String csource) {
  this.csource = csource;
 }

 public String getCdestination() {
  return cdestination;
 }

 public void setCdestination(String cdestination) {
  this.cdestination = cdestination;
 }

 public String getCreate() {
  return create;
 }

 public void setCreate(String create) {
  this.create = create;
 }

 public String getStatus() {
  return status;
 }

 public void setStatus(String status) {
  this.status = status;
 }

 public Set getItemList() {
  return itemList;
 }

 public void setItemList(Set itemList) {
  this.itemList = itemList;
 }


}  

my child model

package com.model;

public class Item{

 private Long itemid;
 private String itemName;
 private String weight;
 private cargo cargo;

 public Long getItemid() {
  return itemid;
 }
 public void setItemid(Long itemid) {
  this.itemid = itemid;
 }
 public String getItemName() {
  return itemName;
 }
 public void setItemName(String itemName) {
  this.itemName = itemName;
 }
 public String getWeight() {
  return weight;
 }
 public void setWeight(String weight) {
  this.weight = weight;
 }
 public cargo getCargo() {
  return cargo;
 }
 public void setCargo(cargo cargo) {
  this.cargo = cargo;
 }


} 

and my form '

package com.form;

import java.util.HashSet;
import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;

import com.model.Item;

public class cargoForm extends ActionForm {
 private Long id;
 private String cname;
 private String cdate;
 private String csource;
 private String cdestination;
 private String create;
 private String status;

 private Long[] itemid;
 private String[] itemName;
 private String[] weight;

 private Set itemset = new HashSet();

 public Long getId() {
  return id;
 }

 public void setId(Long id) {
  this.id = id;
 }

 public String getCname() {
  return cname;
 }

 public void setCname(String cname) {
  this.cname = cname;
 }

 public String getCdate() {
  return cdate;
 }

 public void setCdate(String cdate) {
  this.cdate = cdate;
 }

 public String getCsource() {
  return csource;
 }

 public void setCsource(String csource) {
  this.csource = csource;
 }

 public String getCdestination() {
  return cdestination;
 }

 public void setCdestination(String cdestination) {
  this.cdestination = cdestination;
 }

 public String getCreate() {
  return create;
 }

 public void setCreate(String create) {
  this.create = create;
 }

 public String getStatus() {
  return status;
 }

 public void setStatus(String status) {
  this.status = status;
 }

 public Long[] getItemid() {
  return itemid;
 }

 public void setItemid(Long[] itemid) {
  this.itemid = itemid;
 }

 public String[] getItemName() {
  return itemName;
 }

 public void setItemName(String[] itemName) {
  this.itemName = itemName;
 }

 public String[] getWeight() {
  return weight;
 }

 public void setWeight(String[] weight) {
  this.weight = weight;
 }

 /*
  * public Set getItemset() { return itemset; }
  * 
  * public void setItemset(Set itemset) { this.itemset = itemset; }
  */
 public Set getItemDtl() {
  if (itemid != null) {
   itemset = new HashSet();
   System.out.println("cargadd form" + itemid);
   for (int i = 0; i < itemid.length; i++) {
    Item it = new Item();
    // it.setItemId(itemId[i]);
    it.setItemName(itemName[i]);
    System.out.println("cargadd form" + itemName[i]);
    it.setWeight(weight[i]);

    itemset.add(it);
    System.out.println("cargadd form" + itemset.size());
   }
  }
  return itemset;
 }

 public void setItemDtl(Set itemset) {
  System.out.println("cargadd form" + itemset.size());
  this.itemset = itemset;
  System.out.println("cargadd form" + itemset.size());
 }

 public void reset(ActionMapping mapping, HttpServletRequest request) {

  cname = "";
  csource = "";
  cdestination = "";
  cdate = "";
  status = "";
  create = "";

 }

}

The error:

Hibernate: select max(itemid) from item
Hibernate: insert into item (itemname, weight, position, id, itemid) values (?, ?, ?, ?, ?)
Hibernate: update cargo set name=?, date=?, source=?, destination=?, createby=?, status=? where id=?
Oct 4, 2010 10:44:08 AM org.hibernate.jdbc.BatchingBatcher doExecuteBatch
SEVERE: Exception executing batch: 
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
 at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
 at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
 at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
 at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
 at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
 at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
 at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
 at com.action.CargoAction.save(CargoAction.java:125)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
 at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
 at java.lang.Thread.run(Unknown Source)
Oct 4, 2010 10:44:08 AM org.hibernate.event.def.AbstractFlushingEventListener performExecutions
SEVERE: Could not synchronize database state with session
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
 at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
 at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
 at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
 at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
 at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
 at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
 at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
 at com.action.CargoAction.save(CargoAction.java:125)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
 at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
 at java.lang.Thread.run(Unknown Source)
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
 at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
 at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
 at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
 at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:140)
 at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
 at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
 at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
 at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
 at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
 at com.action.CargoAction.save(CargoAction.java:125)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
 at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
 at org.apache.struts.chain.commands.servlet.ExecuteAction.execute(ExecuteAction.java:58)
 at org.apache.struts.chain.commands.AbstractExecuteAction.execute(AbstractExecuteAction.java:67)
 at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
 at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
 at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
 at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
 at java.lang.Thread.run(Unknown Source)

Answer 1

It looks like, cargo can have one or more item. Each item would have a reference to its corresponding cargo.

From the log, item object is inserted first and then an attempt is made to update the cargo object (which does not exist).

I guess what you actually want is cargo object to be created first and then the item object to be created with the id of the cargo object as the reference - so, essentally re-look at the save() method in the Action class.

Answer 2

It looks like, when you try to delete the same object and then again update the same object, then it gives you this error. As after every update hibernate for safe checking fires how many rows were updated, but during the code the data must have been deleted. Over here hibernate distinguish between the objects based on the key what u have assigned or the equals method.

so, just go through once through your code for this check, or try with implementing equals & hashcode method correctly which might help.