Exception while running hibernate - nubie

[Raghav Sidhanti]

Hi,

I am new to hibernate. I am trying to run a simple Java program in Maven using hibernate but I keep getting the following error.

+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - org.hibernate.testapp:hibernate-test-app:jar:0.0.1-SNAPSHOT
[INFO] task-segment: [org.codehaus.mojo:exec-maven-plugin:1.1.1:java]
[INFO] ------------------------------------------------------------------------
[INFO] Preparing exec:java
[INFO] No goals needed for project - skipping
[WARNING] While downloading javassist:javassist:3.0
This artifact has been relocated to jboss:javassist:3.0.


[INFO] [exec:java {execution: default-cli}]
16 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Environment - Hibernate 3.3.2.GA
16 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Environment - hibernate.properties not found
16 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
16 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
63 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
63 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
125 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : Person.hbm.xml
188 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.HbmBinder - Mapping class: org.hibernate.testapp.Person -> Person
204 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: null
235 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!)
235 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 10
235 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.connection.DriverManagerConnectionProvider - autocommit mode: false
250 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.connection.DriverManagerConnectionProvider - using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost/test
250 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.connection.DriverManagerConnectionProvider - connection properties: {user=root, password=****}
454 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - RDBMS: MySQL, version: 5.1.36-community
454 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.10 ( Revision: ${svn.Revision} )
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.dialect.Dialect - Using dialect: org.hibernate.dialect.MySQLDialect
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.transaction.TransactionFactoryFactory - Using default transaction strategy (direct JDBC transactions)
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Automatic flush during beforeCompletion(): disabled
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Automatic session close at end of transaction: disabled
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - JDBC batch size: 15
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - JDBC batch updates for versioned data: disabled
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Scrollable result sets: enabled
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - JDBC3 getGeneratedKeys(): enabled
516 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Connection release mode: auto
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Maximum outer join fetch depth: 2
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Default batch fetch size: 1
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Generate SQL with comments: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Order SQL updates by primary key: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Order SQL inserts for batching: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.hql.ast.ASTQueryTranslatorFactory - Using ASTQueryTranslatorFactory
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Query language substitutions: {}
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - JPA-QL strict compliance: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Query cache: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Cache region factory : org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge - Cache provider: org.hibernate.cache.NoCacheProvider
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Optimize cache for minimal puts: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Structured second-level cache entries: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Echoing all SQL to stdout
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Statistics: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Deleted entity synthetic identifier rollback: disabled
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Default entity-mode: pojo
532 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.cfg.SettingsFactory - Named query checking : enabled
563 [org.hibernate.mainpackage.HibernateTestApp.main()] INFO org.hibernate.impl.SessionFactoryImpl - building session factory
Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] An exception occured while executing the Java class. null

[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: An exception occured while executing the Java class. null
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
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 org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occured while executing the Java class. null
at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:338)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
... 17 more
Caused by: java.lang.reflect.InvocationTargetException
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 org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:283)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at org.hibernate.mainpackage.HibernateTestApp.main(HibernateTestApp.java:37)
... 6 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Fri Oct 09 12:46:58 CDT 2009
[INFO] Final Memory: 5M/11M
[INFO] ------------------------------------------------------------------------
704 [Finalizer] INFO org.hibernate.connection.DriverManagerConnectionProvider - cleaning up connection pool: jdbc:mysql://localhost/test

My code is as follows:
(hibernate.cfg.xml)

<?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/test</property>
<property name="connection.username">root</property>
<property name="connection.password">raghav</property>

<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">10</property>

<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

<!-- Enable Hibernate's current session context -->
<property name="current_session_context_class">org.hibernate.context.ManagedSessionContext</property>

<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>

<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>

<mapping resource="Person.hbm.xml"/>

</session-factory>

</hibernate-configuration>
****************************************
(Person.hbm.xml)


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

<hibernate-mapping>

<class name="org.hibernate.testapp.Person" table="Person">
<id name="id" type="long" column="id">
<generator class="assigned"/>
</id>
<property name="firstName">
<column name="FirstName"/>
</property>
<property name="lastName">
<column name="LastName"/>
</property>
<property name="companyName">
<column name="CompanyName"/>
</property>
<property name="city">
<column name="City"/>
</property>
<property name="zipCode">
<column name="ZipCode"/>
</property>

</class>


</hibernate-mapping>


*********************************************************
(org.hibernate.testapp.Person.java)

package org.hibernate.testapp;

public class Person {

private long id;
private String firstName;
private String lastName;
private String companyName;
private String city;
private String zipCode;

public Person(){

}

public long getId() {
return id;
}

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

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getLastName() {
return lastName;
}

public void setLastName(String lastName) {
this.lastName = lastName;
}

public String getCompanyName() {
return companyName;
}

public void setCompanyName(String companyName) {
this.companyName = companyName;
}

public String getCity() {
return city;
}

public void setCity(String city) {
this.city = city;
}

public String getZipCode() {
return zipCode;
}

public void setZipCode(String zipCode) {
this.zipCode = zipCode;
}



}

**************************************************
(org.hibernate.mainpackage.HibernateTestApp.java)

package org.hibernate.mainpackage;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.testapp.Person;

public class HibernateTestApp {

public static void main(String args[]){
Session session;

try{

SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
session = sessionFactory.openSession();

Transaction tx = session.beginTransaction();
System.out.println("Inserting new records");
Person person = new Person();

person.setFirstName("Raghav");
person.setLastName("Sidhanti");
person.setCompanyName("Company");
person.setCity("Chicago");
person.setZipCode("60602");

session.save(person);
tx.commit();
System.out.println("Done");

}catch(Exception e){
System.out.println(e.getMessage());

}finally{
session.flush();
session.close();
}
}

}


Can some one please help me out?

[David Newton]

Please UseCodeTags when posting code or configuration. Unformatted code and configuration is very difficult to read. You can edit your post to include them by using the button.

[Raghav Sidhanti]

Hi David,

Thanks for trying to help. I was able to solve the problem by myself. It was an issue with my maven dependencies.
I will use the code tags in my next posts.

Thanks