8
निकाला नहीं जा सका मैं कर्मचारी तालिका के लिए एक बुनियादी हाइबरनेट एप्लिकेशन बना रहा हूं जिसमें मैं रिकॉर्ड जोड़ रहा हूं, अपडेट कर रहा हूं, हटा रहा हूं और रिकॉर्ड प्रदर्शित कर रहा हूं ManageEmployee वर्ग की मदद।त्रुटि: ओआरए -02289: अनुक्रम मौजूद नहीं है - org.hibernate.exception.SQLGrammarException: ResultSet
वास्तव में, ManageEmployee अपने परीक्षण वर्ग है और मैं चीजों को ऊपर करने के लिए Employee.java और Employee.hbm.xml फ़ाइल का उपयोग कर रहा हूँ।
विवरण: डेटाबेस: ओरेकल 11 जी हाइबरनेट संस्करण: hibernate-release-4.3.8.Final जावा संस्करण: जावा 1,8
कर्मचारी तालिका विवरण:
USER_ID संख्या (15,0) नहीं 1 1
FIRST_NAME VARCHAR2 (20 बाइट) हाँ 2
LAST_NAME VARCHAR2 (20 बाइट) हाँ 3
वेतन संख्या (10,0) हाँ 4
त्रुटि लॉग: आप लॉग में देख सकते हैं कि त्रुटि 3 बार आ रही है क्योंकि मैं addEmployee (...) विधि के साथ ManageEmployee.java क्लास में कर्मचारी ऑब्जेक्ट को 3 बार जोड़ रहा हूं, इसलिए मुझे लगता है कि समस्या अनुक्रम जनरेटर के साथ है कॉलम आईडी
यहां मैं बेवकूफ जनरेटर का उपयोग कर रहा हूं। i.g. इंटीजर empID1 = ME.addEmployee ("ज़ारा", "अली", 1000);
May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: ORA-02289: sequence does not exist
org.hibernate.exception.SQLGrammarException: could not extract ResultSet
\t at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80)
\t at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
\t at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
\t at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
\t at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
\t at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122)
\t at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115)
\t at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
\t at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
\t at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
\t at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
\t at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
\t at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)
\t at ManageEmployee.addEmployee(ManageEmployee.java:47)
\t at ManageEmployee.main(ManageEmployee.java:23)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist
\t at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)
\t at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
\t at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059)
\t at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522)
\t at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257)
\t at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587)
\t at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225)
\t at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53)
\t at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774)
\t at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925)
\t at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111)
\t at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798)
\t at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845)
\t at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501)
\t at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)
\t ... 13 more
May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 2289, SQLState: 42000
May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: ORA-02289: sequence does not exist
org.hibernate.exception.SQLGrammarException: could not extract ResultSet
\t at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80)
\t at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
\t at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
\t at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
\t at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
\t at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122)
\t at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115)
\t at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
\t at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
\t at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
\t at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
\t at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
\t at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)
\t at ManageEmployee.addEmployee(ManageEmployee.java:47)
\t at ManageEmployee.main(ManageEmployee.java:24)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist
\t at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)
\t at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
\t at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059)
\t at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522)
\t at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257)
\t at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587)
\t at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225)
\t at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53)
\t at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774)
\t at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925)
\t at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111)
\t at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798)
\t at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845)
\t at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501)
\t at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)
\t ... 13 more
May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 2289, SQLState: 42000
May 12, 2015 3:34:39 AM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: ORA-02289: sequence does not exist
org.hibernate.exception.SQLGrammarException: could not extract ResultSet
\t at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80)
\t at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
\t at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
\t at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
\t at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
\t at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122)
\t at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115)
\t at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
\t at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
\t at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
\t at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
\t at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
\t at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
\t at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)
\t at ManageEmployee.addEmployee(ManageEmployee.java:47)
\t at ManageEmployee.main(ManageEmployee.java:25)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist
\t at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450)
\t at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
\t at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1059)
\t at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:522)
\t at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:257)
\t at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:587)
\t at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:225)
\t at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:53)
\t at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:774)
\t at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:925)
\t at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1111)
\t at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798)
\t at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:4845)
\t at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1501)
\t at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)
\t ... 13 more
First Name: a Last Name: b Salary: 2000ManageEmployee.java फ़ाइल कोड:
import java.util.List;
import java.util.Date;
import java.util.Iterator;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class ManageEmployee {
private static SessionFactory factory;
public static void main(String[] args) {
try{
factory = new Configuration().configure().buildSessionFactory();
}catch (Throwable ex) {
System.err.println("Failed to create sessionFactory object." + ex);
throw new ExceptionInInitializerError(ex);
}
ManageEmployee ME = new ManageEmployee();
/* Add few employee records in database */
Integer empID1 = ME.addEmployee("Zara", "Ali", 1000);
Integer empID2 = ME.addEmployee("Daisy", "Das", 5000);
Integer empID3 = ME.addEmployee("John", "Paul", 10000);
/* List down all the employees */
ME.listEmployees();
/* Update employee's records */
// ME.updateEmployee(empID1, 5000);
/* Delete an employee from the database */
// ME.deleteEmployee(empID2);
/* List down new list of the employees */
// ME.listEmployees();
}
/* Method to CREATE an employee in the database */
public Integer addEmployee(String fname, String lname, int salary){
Session session = factory.openSession();
Transaction tx = null;
Integer employeeID = null;
try{
tx = session.beginTransaction();
Employee employee = new Employee(fname, lname, salary);
employeeID = (Integer) session.save(employee);
tx.commit();
}catch (HibernateException e) {
if (tx!=null) tx.rollback();
e.printStackTrace();
}finally {
session.close();
}
return employeeID;
}
/* Method to READ all the employees */
public void listEmployees(){
Session session = factory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
List employees = session.createQuery("FROM Employee").list();
for (Iterator iterator =
employees.iterator(); iterator.hasNext();){
Employee employee = (Employee) iterator.next();
System.out.print("First Name: " + employee.getFirstName());
System.out.print(" Last Name: " + employee.getLastName());
System.out.println(" Salary: " + employee.getSalary());
}
tx.commit();
}catch (HibernateException e) {
if (tx!=null) tx.rollback();
e.printStackTrace();
}finally {
session.close();
}
}
/* Method to UPDATE salary for an employee */
public void updateEmployee(Integer EmployeeID, int salary){
Session session = factory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
Employee employee =
(Employee)session.get(Employee.class, EmployeeID);
employee.setSalary(salary);
\t \t session.update(employee);
tx.commit();
}catch (HibernateException e) {
if (tx!=null) tx.rollback();
e.printStackTrace();
}finally {
session.close();
}
}
/* Method to DELETE an employee from the records */
public void deleteEmployee(Integer EmployeeID){
Session session = factory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
Employee employee =
(Employee)session.get(Employee.class, EmployeeID);
session.delete(employee);
tx.commit();
}catch (HibernateException e) {
if (tx!=null) tx.rollback();
e.printStackTrace();
}finally {
session.close();
}
}
}मानचित्रण फ़ाइल:
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="Employee" table="EMPLOYEE">
<meta attribute="class-description">
This class contains the employee detail.
</meta>
<id name="user_id" type="int" column="user_id">
<generator class="native"/>
</id>
<property name="firstName" column="first_name" type="string"/>
<property name="lastName" column="last_name" type="string"/>
<property name="salary" column="salary" type="int"/>
</class>
</hibernate-mapping>public class Employee {
private int user_id;
private String firstName;
private String lastName;
private int salary;
public Employee() {}
public Employee(String fname, String lname, int salary) {
this.firstName = fname;
this.lastName = lname;
this.salary = salary;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String first_name) {
this.firstName = first_name;
}
public String getLastName() {
return lastName;
}
public void setLastName(String last_name) {
this.lastName = last_name;
}
public int getSalary() {
return salary;
}
public void setSalary(int salary) {
this.salary = salary;
}
public int getUser_id() {
\t return user_id;
}
public void setUser_id(int user_id) {
\t this.user_id = user_id;
}
}
कर्मचारी वर्ग दिखाएँ कृपया; यह त्रुटि तब होती है जब तालिका में कोई नई आईडी/पंक्ति डाली जाती है और आपने मॉडल श्रेणी (कर्मचारी) में अनुक्रम नहीं बनाया है, इसलिए हाइबरनेट नई पंक्ति नहीं बना सकता है क्योंकि यह आईडी को सम्मिलित करने के बारे में नहीं जानता है। – Asura
ऐसा लगता है कि 'जनरेटर वर्ग = "मूल" />' अनुक्रम की अपेक्षा करता है, शायद इस परिस्थिति में "मूल" पीढ़ी के ओरेकल कार्यान्वयन के बारे में दस्तावेज़ों को देखें? – BretC
@Ausura मैंने सवाल संपादित किया है। आखिरकार कर्मचारी वर्ग – user2682305