Develop Reference

Hibernate - non-working code an what is a service-registry

I just got through the book "Just Hibernate" from O'Reilly. Some code isn't really explained fully but just given without complete description.
This code for example:
public class BasicMovieManager {
private SessionFactory sessionFactory = null;
// Creating SessionFactory using 4.2 version of Hibernate
private void initSessionFactory(){
Configuration config = new Configuration().configure();
// Build a Registry with our configuration properties
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(
config.getProperties()).buildServiceRegistry();
// create the session factory
sessionFactory = config.buildSessionFactory(serviceRegistry);
}
...
}
I just wanted to copy the code to my Hibernate-experiments, but the current stable Hibernate-version 5.2 doesn't know the class ServiceRegistryBuilder. What is a service-registry and how do I have to change the code to work with the current Hibernate-version?

The code was used to create a SessionFactory with Hibernate 4.x
The similar code for Hibernate 5.x would be something like:
StandardServiceRegistry standardRegistry =
new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
Metadata metaData =
new MetadataSources(standardRegistry).getMetadataBuilder().build();
sessionFactory = metaData.getSessionFactoryBuilder().build();
As you can see, in Hibernate 5 StandardServiceRegistry class is used. If you don't have a hibernate.cfg.xml file just use configure() method with no arguments.
See this article for further details.

hibernate.cfg.xml not found when run as executable jar

I am new to Hibernate.
When I run my Hibernate program using Eclipse, it is able to find hibernate.cfg.xml file.
I put that file into src/main/resources folder.
But when I create executable jar and run my program using
java -jar SQ.jar
It is giving me following error
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.moodys.sonarqube.ExtractSQData.HibernateUtil.buildSessionFactory(HibernateUtil.java:20)
at com.moodys.sonarqube.ExtractSQData.HibernateUtil.<clinit>(HibernateUtil.java:9)
at com.moodys.sonarqube.ExtractSQData.SQ.getProjectDB(SQ.java:266)
at com.moodys.sonarqube.ExtractSQData.SQ.extractSQDataToDB(SQ.java:76)
at com.moodys.sonarqube.ExtractSQData.SQ.main(SQ.java:59)
Caused by: org.hibernate.HibernateException: /hibernate.cfg.xml not found
at org.hibernate.util.ConfigHelper.getResourceAsStream(ConfigHelper.java:147)
at org.hibernate.cfg.Configuration.getConfigurationInputStream(Configuration.java:1405)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1427)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1414)
at com.moodys.sonarqube.ExtractSQData.HibernateUtil.buildSessionFactory(HibernateUtil.java:14)
... 4 more
Following is the code where I load my hibernate.cfg.xml file
private static SessionFactory buildSessionFactory() {
try {
// Create the SessionFactory from hibernate.cfg.xml
return new AnnotationConfiguration().configure().buildSessionFactory();
}
catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
Please advise me what I am doing wrong.

You can give the full path while configure it.
You can try this.
return new AnnotationConfiguration().configure("/resources/hibernate.cfg.xml").buildSessionFactory();
or
return new AnnotationConfiguration().configure("hibernate.cfg.xml").buildSessionFactory();

You can try this one also if you are using hibernate 4.3+
configuration = new Configuration();
configuration.configure("hibernate.cfg.xml");
StandardServiceRegistryBuilder serviceBuilder = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties());
sessionFactory = configuration.buildSessionFactory(serviceBuilder.build());

org.hibernate.HibernateException: /hibernate.cfg.xml not found from resources

I have new spring-boot project. I use gradle as build manager and Eclpice IDE. I want to use hibernate and try to get configurations from hibernate.cfg.xml file, but get
org.hibernate.HibernateException: /hibernate.cfg.xml not found
I store this file in resources folder, also I tried put it into META-INF folder.
folders structure:
HibernateUtil.java:
public class HibernateUtil {
private static SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory()
{
try
{
if (sessionFactory == null)
{
sessionFactory = new Configuration().configure().buildSessionFactory();
}
return sessionFactory;
} catch (Throwable ex)
{
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public static void shutdown() {
// Close caches and connection pools
getSessionFactory().close();
}
}

If you want to read the files in the resources directory, you need to use the classloder to get the file.
In static method
HibernateUtil.class.getClassLoader().getResource("hibernate.cfg.xml").getFile();
non static method
getClass().getClassLoader().getResource("hibernate.cfg.xml").getFile();
and if the resource resides in any of the sub directories of resources, prefix the folder path while getting the resource
Example to get the resource in META-INF directory
getResource("META-INF/hibernate.cfg.xml");
But spring boot auto configures, just by adding dependencies in pom.xml and providing JPA related properties in application.properties

if your application is web Service,you should put hibernate.cfg.xml in WEB-INF floder.if your application is client service, you should put your hibernate.cfg.xml in src package.

HHH000040: ...SessionFactory creation failed.org.hibernate.HibernateException: /hibernate.cfg.xml not found in Eclipse [duplicate]

I'm trying to use hibernate with spring 3 mvc but at the moment I get this exception thrown. I think I need to define my hibernate.cfg.xml somewhere, but not sure where?
I basically followed this example here http://www.nabeelalimemon.com/blog/2010/05/spring-3-integrated-with-hibernate-part-a/ And in particularly saw this line of code there that suppose to "magically" find my hibernate.cfg file using this:
return new Configuration().configure().buildSessionFactory();
I'm guessing that is not correct? i currently have my hibernate.cfg file inside src/com/jr/hibernate/
below is my cfg file:
<?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>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/racingleague</property>
<property name="connection.username">username</property>
<property name="connection.password">password</property>
<property name="hibernate.format_sql">true</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="hibernate.show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hibernate.hbm2ddl.auto">update</property>
<!--property name="hbm2ddl.auto">update</property-->
<mapping resource="com/jr/model/hibernateMappings/user.hbm.xml"/>
</session-factory>
</hibernate-configuration>
my hibernate utils class:
package com.jr.utils;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtils {
private static final SessionFactory sessionFactory = buildSessionFactory();
public static SessionFactory buildSessionFactory() {
try {
// Create the SessionFactory from hibernate.cfg.xml
return new Configuration().configure().buildSessionFactory();
}
catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
}
which gets called bu this abstract class:
package com.jr.db;
import org.hibernate.SessionFactory;
import org.hibernate.classic.Session;
import com.jr.utils.HibernateUtils;
public abstract class DbWrapper<T> {
private static SessionFactory sessionFactory = null;
private static Session session;
public DbWrapper() {
setSessionFactory();
}
private void setSessionFactory() {
sessionFactory = HibernateUtils.buildSessionFactory();
session = sessionFactory.getCurrentSession();
}
public boolean addNewItem(T dbItem) {
try {
session.getTransaction().begin();
session.save(dbItem);
session.getTransaction().commit();
} catch (Exception e) {
System.err.println("error exception when adding new item to table"
+ e);
} finally {
session.close();
sessionFactory.close();
}
return false;
}
public abstract boolean removeItem(String uid);
public abstract boolean modifyItem(String uid, T item);
}
And here is the controller that originally does some hibernate stuff:
private Logger logger = Logger.getLogger(UserController.class);
private UserDb userDb;
#RequestMapping(value = "/user/registerSuccess", method = RequestMethod.POST)
public String submitRegisterForm(#Valid User user, BindingResult result) {
// validate the data recieved from user
logger.info("validate the data recieved from user");
if (result.hasErrors()) {
logger.info("form has "+result.getErrorCount()+" errors");
return "account/createForm";
} else{
// if everthings ok, add user details to database
logger.info("if everthings ok, add user details to database");
userDb = new UserDb();
userDb.addNewItem(user);
// display success and auto log the user to the system.
return "account/main";
}
}
Cheers in advance. I also have all my table hibvernate xml mappings in the same location as my hibernate.cfg.xml file

Instead of placing hibernate.cfg.xml file under src/com/jr/hibernate/ directory, place it under src directory. It will then automatically appear in WEB-INF/classes directory, as mentioned by the folks here.

hibernate.cfg.xml must be found in the root of the classpath when the webapp is started.
If you are using maven to build the project, put hibernate.cfg.xml in the src/main/resources directory so that when you build the war package, it will be automatically be placed in /WEB-INF/classes.
If not using maven, place the file directly in your WEB-INF/classes directory.

hibernate.cfg.xml should be in WEB-INF/classes. Alternatively, you can load it from a custom location by passing the corresponding argument to the configure(..) method.

If you using Maven you should put file hibernate.cfg.xml in following path /src/main/java/resources/hibernate.cfg.xml in Intellij IDEA. Then, in your run application class just insert line:
SessionFactory factory = new
Configuration().configure("hibernate.cfg.xml").addAnnotatedClass().buildSessionFactory();

In IntelliJ go to "Open Project Settings" >> Modules >> Hibernate and target your hibernate.cfg.xml file used in your project.

I have the same problem and moved hibernate.cfg.xml to the src/main/resources directory solved, it will be automatically be placed in /WEB-INF/classes.

Even if i had hibernate.cfg.xml under src folder, i get
org.hibernate.HibernateException: /hibernate.cfg.xml not found
after running mvn clean install. With Try and error i was able to resolve it by removing hibernate.cfg.xml from src folded and add to to somewhere else. Run the app(It is a main class in my case). During this I still get the error. and add it back to src folder and rum the main class. It worked!

How to read hibernate config file from user defined directory

I need to provide a jar file which provides an API to retrieve the records from the database using Hibernate.
For example I have an API:
public List getUsers(String locationOfHibernateConfigFile) {
}
I tried by passing the location of the config file with the complete path using c:\hibernate-cfg.xml as shown below:
SessionFactory sessionFactory = new Configuration()
.configure(C:\hibernate.cfg.xml).buildSessionFactory();
session = sessionFactory.openSession();
I am getting an error saying c:\hibernate-cfg.xml is not found.
Please provide me some pointers to achieve the same.

SessionFactory sessionFactory = new Configuration()
.configure("hibernate.primaryKeys.cfg.xml")
.buildSessionFactory();
Where hibernate.primaryKeys.cfg.xml is a user-defined hibernate file.
This will work, but ensure hibernate.primaryKeys.cfg.xml is in your classpath.

Well try it:
File file = new File("C:\hibernate.cfg.xml");
SessionFactory sessionFactory = new Configuration().configure(file).buildSessionFactory();
But it is not advisable to leave this type of configuration on C:.

You can read file and properties:
Just put your file hibernate.cfg.xml into the resources folder.
Properties properties = new Configuration().configure().getProperties();
String driver = properties.getProperty("hibernate.connection.driver_class");
String url = properties.getProperty("hibernate.connection.url");
String username = properties.getProperty("hibernate.connection.username");
String password = properties.getProperty("hibernate.connection.password");