Hibernate Exception ------------------- Key: HHH-3093 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3093 Project: Hibernate3 Issue Type: Bug Components: query-sql Affects Versions: 3.1.3 Environment: Hibernate 3.0, MySQL Reporter: Achappan M Hil, I got the following exception when i saved the data into the database. I can identified, my data is not committed in db. Here i specified my java classes. Please anyone guide me to solve this problem. 21:27:44,359 ERROR [STDERR] org.hibernate.MappingException: Unknown entity: com.construction.beans.PersonalInfo at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:610) at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1246) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:89) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186) at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175) at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70) at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:524) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:510) at com.construction.DB.DBUtil.save(DBUtil.java:48) at com.construction.Servlets.AddPersonalInfo.personalInfo(AddPersonalInfo.java:48) at com.construction.Servlets.AddPersonalInfo.doGet(AddPersonalInfo.java:25) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446) at java.lang.Thread.run(Unknown Source) personalInfo.hbm File: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.construction.beans.PersonalInfo" table="personalinfo" > <id name="emp_code" column = "EMP_CODE" type="java.lang.Long"> <generator class="increment"/> </id> <property name="employee_Name" type="java.lang.String"/> <property name="father_Name" type="java.lang.String"/> <property name="mother_Name" type="java.lang.String"/> <property name="dob" type="java.lang.String"/> <property name="gender" type="java.lang.String"/> <property name="marital_status" type="java.lang.String"/> <property name="bloodgroup" type="java.lang.String"/> <property name="qualification" type="java.lang.String"/> <property name="address" type="java.lang.String"/> <property name="email" type="java.lang.String"/> <property name="mobileno" type="java.lang.String"/> <one-to-one name="salaryInfo" class="com.construction.beans.SalaryInfo" cascade="all" constrained="false"/> <!-- property name="empPhoto" type="java.lang.String"/--> </class> </hibernate-mapping> salaryInfo.hbm.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.construction.beans.SalaryInfo" table="SalaryInfo" > <id name="emp_code" column = "EMP_CODE" type="java.lang.Long"> <generator class="increment"/> </id> <property name="empno" type="java.lang.String"/> <property name="doj" type="java.lang.String"/> <property name="designation" type="java.lang.String"/> <property name="accountno" type="java.lang.String"/> <property name="basic" type="java.lang.String"/> <property name="allowance" type="java.lang.String"/> <property name="ot_per_hour" type="java.lang.String"/> <property name="pfno" type="java.lang.String"/> <property name="esicno" type="java.lang.String"/> <property name="mem_UHID" type="java.lang.String"/> <property name="licno" type="java.lang.String"/> <!-- property name="empPhoto" type="java.lang.String"/--> </class> </hibernate-mapping> Persistent Class: package com.construction.beans; import java.io.Serializable; public class PersonalInfo implements Serializable{ /**Personal Details**/ private long emp_code; private String employee_Name; private String father_Name; private String mother_Name; private String dob; private String gender; private String marital_status; private String bloodgroup; private String qualification; private String address; private String email; private String mobileno; private String empPhoto; private SalaryInfo salaryInfo; public long getEmp_code() { return emp_code; } public void setEmp_code(long emp_code) { this.emp_code = emp_code; } public String getEmployee_Name() { return employee_Name; } public void setEmployee_Name(String employee_Name) { this.employee_Name = employee_Name; } public String getFather_Name() { return father_Name; } public void setFather_Name(String father_Name) { this.father_Name = father_Name; } public String getMother_Name() { return mother_Name; } public void setMother_Name(String mother_Name) { this.mother_Name = mother_Name; } public String getDob() { return dob; } public void setDob(String dob) { this.dob = dob; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } public String getMarital_status() { return marital_status; } public void setMarital_status(String marital_status) { this.marital_status = marital_status; } public String getBloodgroup() { return bloodgroup; } public void setBloodgroup(String bloodgroup) { this.bloodgroup = bloodgroup; } public String getQualification() { return qualification; } public void setQualification(String qualification) { this.qualification = qualification; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public String getMobileno() { return mobileno; } public void setMobileno(String mobileno) { this.mobileno = mobileno; } public String getEmpPhoto() { return empPhoto; } public void setEmpPhoto(String empPhoto) { this.empPhoto = empPhoto; } public SalaryInfo getSalaryInfo() { return salaryInfo; } public void setSalaryInfo(SalaryInfo salaryInfo) { this.salaryInfo = salaryInfo; } } DBUtil.java package com.construction.DB; import java.io.File; import java.util.List; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.hibernate.tool.hbm2ddl.SchemaExport; import com.construction.beans.PersonalInfo; public class DBUtil { private SessionFactory sf; private static DBUtil ed=null; public static DBUtil create() { if(ed==null) { ed=new DBUtil(); System.out.println("instance created"); } return ed; } private DBUtil() { String path=System.getProperty("user.dir")+File.separator+"config"+File.separator; File f=new File(path+"hibernate.cfg.xml"); Configuration cfg=new Configuration().configure(f); sf=cfg.buildSessionFactory(); //new SchemaExport(cfg).create(true,true); } //create public void save(Object o) { Session session = sf.openSession(); try { session.save(o); System.out.println("Save session Object" + o); session.beginTransaction().commit(); } catch(Exception e) { System.out.println("Inside Exception=========>"); e.printStackTrace(); session.beginTransaction().rollback(); } finally { session.close(); } } public void update(Object o) { Session session=sf.openSession(); try { session.update(o); session.beginTransaction().commit(); } catch(Exception e) { session.beginTransaction().rollback(); } finally { session.close(); } } public void delete(Object o) { Session session=sf.openSession(); try { session.delete(o); session.beginTransaction().commit(); } catch(Exception e) { session.beginTransaction().rollback(); } finally { session.close(); } } public List getLoginFormDetails() { Session session=sf.openSession(); List l = session.createCriteria(LoginForm.class).list(); return l; } public List getPersonalInfoDetails() { Session session=sf.openSession(); List l = session.createCriteria(PersonalInfo.class).list(); System.out.println("DBUtil: -----> listsize" + l.size()); return l; } } My servlet Class: package com.construction.Servlets; import java.io.*; import java.util.Iterator; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.*; import com.construction.DB.DBInit; import com.construction.DB.DBUtil; import com.construction.beans.*; public class AddPersonalInfo extends HttpServlet { DBUtil util; protected void doGet(HttpServletRequest httpRequest, HttpServletResponse httpResponse) throws ServletException, IOException { //To set the content type for the server //httpResponse.setContentType("text/html"); savePersonalInfo(httpRequest); //Getting the data from the server and print the data into //the browser. // PrintWriter print = httpResponse.getWriter(); } public void savePersonalInfo(HttpServletRequest httpRequest) { /* * Get the employee personal information from the user and * set it into the PersonalInfo */ PersonalInfo personalInfo = new PersonalInfo(); //personalInfo.setEmp_code(Long.parseLong(httpRequest.getParameter("emp_code"))); //personalInfo.setEmp_code(001); personalInfo.setEmployee_Name(httpRequest.getParameter("employee_Name")); personalInfo.setFather_Name(httpRequest.getParameter("father_Name")); personalInfo.setMother_Name(httpRequest.getParameter("mother_Name")); personalInfo.setDob(httpRequest.getParameter("dob")); personalInfo.setGender(httpRequest.getParameter("gender")); personalInfo.setMarital_status(httpRequest.getParameter("marital_status")); personalInfo.setBloodgroup(httpRequest.getParameter("bloodgroup")); personalInfo.setQualification(httpRequest.getParameter("qualification")); personalInfo.setAddress(httpRequest.getParameter("address")); personalInfo.setEmail(httpRequest.getParameter("email")); personalInfo.setMobileno(httpRequest.getParameter("mobileno")); personalInfo.setEmpPhoto(httpRequest.getParameter("empPhoto")); System.out.println("Get Emp Name"+personalInfo.getEmployee_Name() ); System.out.println("Get Father Name"+personalInfo.getFather_Name()); /* * Get the employee salary details from the user and * set it into the SalaryInfo */ SalaryInfo salaryInfo = new SalaryInfo(); //salaryInfo.setEmp_code(001); /*salaryInfo.setEmpno(httpRequest.getParameter("empno")); salaryInfo.setDoj(httpRequest.getParameter("doj")); salaryInfo.setDesignation(httpRequest.getParameter("designation")); salaryInfo.setAccountno(httpRequest.getParameter("accountno")); salaryInfo.setBasic(httpRequest.getParameter("basic")); salaryInfo.setAllowance(httpRequest.getParameter("allowance")); salaryInfo.setOt_per_hour(httpRequest.getParameter("ot_per_hour")); salaryInfo.setPfno(httpRequest.getParameter("pfno")); salaryInfo.setEsicno(httpRequest.getParameter("esicno")); salaryInfo.setMem_UHID(httpRequest.getParameter("mem_UHID")); salaryInfo.setLicno(httpRequest.getParameter("licno")); System.out.println("Get Emp Name"+salaryInfo.getEmpno()); System.out.println("Get Father Name"+salaryInfo.getDoj());*/ //set the salary details into the personalinfo personalInfo.setSalaryInfo(salaryInfo); //save peronal information to the database // create the object for the DBUtil util = DBUtil.create(); util.save(personalInfo); util.save(salaryInfo); System.out.println("Object is creted for DBUtil"); /*if(util != null) { System.out.println("print Util Object" + util); //if(personalInfo != null) System.out.println("Save Persional & Salary Information "); util.save(personalInfo); System.out.println(personalInfo); List list = util.getPersonalInfoDetails(); System.out.println("List " + list); System.out.println("List " + list.size()); Iterator iterator = list.iterator(); System.out.println("Iterator"+ iterator); while (iterator.hasNext ()) { String o = (String) iterator.next (); System.out.println(o); } System.out.println("Persional Information is Saved Sucessfully"); //util.save(salaryInfo); //System.out.println("Salary Information is Saved Sucessfully"); }*/ } } Please send me the solution for my codings. Thank You!