Я получаю ошибку гибернации.Я просто делаю проверку концепции, чтобы проверить связь в спящем режиме.Я почти уверен, что ошибка, по-моему, заключается в файле сопоставления, но я не могу понять его
Пример, который я использую, заключается в том, что ПОЛЬЗОВАТЕЛЬ может иметь много ЭВМ, но КОМПЬЮТЕР предназначен только для одного ПОЛЬЗОВАТЕЛЯ
my ModuleLoad немного похож на main в Java
public void onModuleLoad()
{
GreetingServiceAsync S = GWT.create(GreetingService.class);
((ServiceDefTarget) S).setServiceEntryPoint( GWT.getModuleBaseURL() +"greet");
Computer C1= new Computer(1,"ad");
Computer C2= new Computer(2,"ad");
Computer C3= new Computer(3,"ad");
Set <Computer> S1= new HashSet();
S1.add(C2);S1.add(C3);S1.add(C1);
Users U1= new Users(1,S1);
S.greetServer(U1, new AsyncCallback <Users>(){
@Override
public void onFailure(Throwable caught) {
// TODO Auto-generated method stub
Window.alert("Failure");
}
@Override
public void onSuccess(Users result) {
// TODO Auto-generated method stub
Window.alert("Success");
}});
}
Класс Users:
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import net.sf.gilead.pojo.gwt.LightEntity;
import com.google.gwt.user.client.rpc.IsSerializable;
public class Users extends LightEntity implements IsSerializable
{
private long UserId;
private Set <Computer> Computers=new HashSet <Computer> ();
public Users(){}
public Users(long userId, Set <Computer> computers)
{
UserId = userId;
Computers = computers;
}
public long getUserId() {
return UserId;
}
public void setUserId(long userId) {
UserId = userId;
}
public Set <Computer> getComputers() {
return Computers;
}
public void setComputers(Set<Computer> computers) {
Computers = computers;
}
}
Computer Class:
import net.sf.gilead.pojo.gwt.LightEntity;
import com.google.gwt.user.client.rpc.IsSerializable;
public class Computer extends LightEntity implements IsSerializable
{
private long ComputerId;
private String Description;
public Computer(){}
public Computer(long ComputerId,String Description)
{
this.ComputerId=ComputerId;
this.Description=Description;
}
public long getComputerId() {
return ComputerId;
}
public void setComputerId(long computerId) {
ComputerId = computerId;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
}
Users Mapping 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">
<!-- Generated Dec 3, 2010 5:21:42 AM by Hibernate Tools 3.4.0.Beta1 -->
<hibernate-mapping>
<class name="com.BiddingSystem.domain.Users" table="USERS">
<id name="UserId" type="long">
<column name="USERID" />
<generator class="assigned" />
</id>
<set name="Computers" table="COMPUTER" inverse="false" lazy="true">
<key>
<column name="USERID" />
</key>
<one-to-many class="com.BiddingSystem.domain.Computer" />
</set>
</class>
</hibernate-mapping>
Класс компьютера:
import net.sf.gilead.pojo.gwt.LightEntity;
import com.google.gwt.user.client.rpc.IsSerializable;
public class Computer extends LightEntity implements IsSerializable
{
private long ComputerId;
private String Description;
public Computer(){}
public Computer(long ComputerId,String Description)
{
this.ComputerId=ComputerId;
this.Description=Description;
}
public long getComputerId() {
return ComputerId;
}
public void setComputerId(long computerId) {
ComputerId = computerId;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
}
Файл сопоставления компьютеров:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Dec 3, 2010 5:21:42 AM by Hibernate Tools 3.4.0.Beta1 -->
<hibernate-mapping>
<class name="com.BiddingSystem.domain.Computer" table="COMPUTER">
<id name="ComputerId" type="long">
<column name="COMPUTERID" />
<generator class="assigned" />
</id>
<property name="Description" type="java.lang.String">
<column name="DESCRIPTION" />
</property>
</class>
</hibernate-mapping>
Файл конфигурации Hibernate:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost/postgres</property>
<property name="hibernate.connection.username">postgres</property>
<property name="hibernate.connection.password">noor</property>
<property name="hibernate.connection.pool_size">10</property>
<property name="show_sql">true</property>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="current_session_context_class">thread</property>
<mapping resource="com/BiddingSystem/domain/Users.hbm.xml"/>
<mapping resource="com/BiddingSystem/domain/Computer.hbm.xml"/>
</session-factory>
</hibernate-configuration>
Реализация сервера для сохранения в базе данных:
import java.util.ArrayList;
import java.util.List;
import net.sf.gilead.core.PersistentBeanManager;
import net.sf.gilead.core.hibernate.HibernateUtil;
import net.sf.gilead.core.store.stateless.StatelessProxyStore;
import net.sf.gilead.gwt.PersistentRemoteService;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import com.BiddingSystem.client.GreetingService;
import com.BiddingSystem.domain.Users;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
public class GreetingServiceImpl extends PersistentRemoteService implements GreetingService
{
private static final long serialVersionUID = 1L;
private HibernateUtil gileadHibernateUtil = new HibernateUtil();
public GreetingServiceImpl ()
{
gileadHibernateUtil.setSessionFactory(com.BiddingSystem.server.HibernateUtil.getSessionFactory());
PersistentBeanManager persistentBeanManager = new PersistentBeanManager();
persistentBeanManager.setPersistenceUtil(gileadHibernateUtil);
persistentBeanManager.setProxyStore(new StatelessProxyStore());
setBeanManager(persistentBeanManager);
}
public Users greetServer(Users S)
{
Session session = gileadHibernateUtil.getSessionFactory().openSession();
Transaction tr= session.beginTransaction();
session.save(S);
tr.commit();
session.close();
return S;
}
}
Получаемая ошибка:
Caused by: org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:85)
at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:70)
at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:90)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:183)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1206)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:375)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
at com.BiddingSystem.server.GreetingServiceImpl.greetServer(GreetingServiceImpl.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.sf.gilead.gwt.PersistentRemoteService.processCall(PersistentRemoteService.java:174)
... 21 more
Файл сопоставления пользователей:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated Dec 3, 2010 5:21:42 AM by Hibernate Tools 3.4.0.Beta1 -->
<hibernate-mapping>
<class name="com.BiddingSystem.domain.Users" table="USERS">
<id name="UserId" type="long">
<column name="USERID" />
<generator class="assigned" />
</id>
<set name="Computers" table="COMPUTER" inverse="false" lazy="true">
<key>
<column name="USERID" />
</key>
<one-to-many class="com.BiddingSystem.domain.Computer" />
</set>
</class>
</hibernate-mapping>
Другой файл наверняка будет хорошим, так как я проверил его без спящего режима
Если кто-то может помочь, было бы здорово