I am using maven2 to write a simple hello world program
I have three files in src/main/java/hello folder
HelloWorld.java
Message.java
Message.hbm.xml
I have one file in src/main/java/persistence
HibernateUtil.java
source is as follows
#HelloWorld.java
Code:
package hello;
import org.hibernate.*;
import persistence.*;
import java.util.*;
public class HelloWorld {
public static void main(String[] args) {
// ############################################################################
// First unit of work
Session session = HibernateUtil.getSessionFactory().openSession();
Transaction tx = session.beginTransaction();
Message message = new Message("Hello World");
session.save(message);
tx.commit();
session.close();
// ############################################################################
// Second unit of work
Session secondSession = HibernateUtil.getSessionFactory().openSession();
Transaction secondTransaction = secondSession.beginTransaction();
List messages =
secondSession.createQuery("from Message m order by m.text asc").list();
System.out.println( messages.size() + " message(s) found:" );
for ( Iterator iter = messages.iterator(); iter.hasNext(); ) {
Message loadedMsg = (Message) iter.next();
System.out.println( loadedMsg.getText() );
}
secondTransaction.commit();
secondSession.close();
// ############################################################################
// Third unit of work
Session thirdSession = HibernateUtil.getSessionFactory().openSession();
Transaction thirdTransaction = thirdSession.beginTransaction();
// message.getId() holds the identifier value of the first message
Message loadedMessage = (Message) thirdSession.get( Message.class, message.getId());
loadedMessage.setText( "Greetings Earthling" );
loadedMessage.setNextMessage(
new Message( "Take me to your leader (please)" )
);
thirdTransaction.commit();
thirdSession.close();
// ############################################################################
// Final unit of work (just repeat the query)
// TODO: You can move this query into the thirdSession before the commit, makes more sense!
Session fourthSession = HibernateUtil.getSessionFactory().openSession();
Transaction fourthTransaction = fourthSession.beginTransaction();
messages =
fourthSession.createQuery("from Message m order by m.text asc").list();
System.out.println( messages.size() + " message(s) found:" );
for ( Iterator iter = messages.iterator(); iter.hasNext(); ) {
Message loadedMsg = (Message) iter.next();
System.out.println( loadedMsg.getText() );
}
fourthTransaction.commit();
fourthSession.close();
// Shutting down the application
HibernateUtil.shutdown();
}
}
#Message.java
Code:
package hello;
public class Message {
private Long id;
private String text;
private Message nextMessage;
Message() {}
public Message(String text) {
this.text = text;
}
public Long getId() {
return id;
}
private void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Message getNextMessage() {
return nextMessage;
}
public void setNextMessage(Message nextMessage) {
this.nextMessage = nextMessage;
}
}
#Message.hbm.xml
Code:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class
name="hello.Message"
table="MESSAGES">
<id
name="id"
column="MESSAGE_ID">
<generator class="native"/>
</id>
<property
name="text"
column="MESSAGE_TEXT"/>
<many-to-one
name="nextMessage"
cascade="all"
column="NEXT_MESSAGE_ID"
foreign-key="FK_NEXT_MESSAGE"/>
</class>
</hibernate-mapping>
I have #hibernate.cfg.xml in resources folder is as follows
Code:
<?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">org.hsqldb.jdbcDriver</property>
<property name="connection.url">jdbc:hsqldb:hsql://localhost</property>
<property name="connection.username">sa</property>
<property name="connection.password"></property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.HSQLDialect</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="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>
<mapping resource="hello/Message.hbm.xml"/>
</session-factory>
</hibernate-configuration>
I am getting output as
Code:
C:\Users\mypc\hibernate\2>mvn -e exec:java -Dexec.mainClass="hello.HelloWorld"
+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'exec'.
[INFO] ------------------------------------------------------------------------
[INFO] Building 2
[INFO] task-segment: [exec:java]
[INFO] ------------------------------------------------------------------------
[INFO] Preparing exec:java
[INFO] No goals needed for project - skipping
Downloading: http://repo1.maven.org/maven2/asm/asm/1.0/asm-1.0.pom
[INFO] Unable to find resource 'asm:asm:pom:1.0' in repository central (http://repo1.maven.
org/maven2)
Downloading: http://repo1.maven.org/maven2/stax/stax/1.0/stax-1.0.pom
[INFO] Unable to find resource 'stax:stax:pom:1.0' in repository central (http://repo1.mave
n.org/maven2)
Downloading: http://repo1.maven.org/maven2/stax/stax-ri/1.0/stax-ri-1.0.pom
[INFO] Unable to find resource 'stax:stax-ri:pom:1.0' in repository central (http://repo1.m
aven.org/maven2)
Downloading: http://repo1.maven.org/maven2/clover/clover/1.3-rc4/clover-1.3-rc4.pom
[INFO] Unable to find resource 'clover:clover:pom:1.3-rc4' in repository central (http://re
po1.maven.org/maven2)
Downloading: http://repo1.maven.org/maven2/org/hibernate/hibernate3/3.3.2.GA/hibernate3-3.3
.2.GA.pom
[INFO] Unable to find resource 'org.hibernate:hibernate3:pom:3.3.2.GA' in repository centra
l (http://repo1.maven.org/maven2)
[INFO] [exec:java {execution: default-cli}]
Jul 17, 2009 1:16:55 PM org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.2.6
Jul 17, 2009 1:16:55 PM org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
Jul 17, 2009 1:16:56 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: Bytecode provider name : cglib
Jul 17, 2009 1:16:56 PM org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
Jul 17, 2009 1:16:56 PM org.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
Jul 17, 2009 1:16:56 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
Jul 17, 2009 1:16:57 PM org.hibernate.cfg.Configuration addResource
INFO: Reading mappings from resource : hello/Message.hbm.xml
Jul 17, 2009 1:16:57 PM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
INFO: Mapping class: hello.Message -> MESSAGES
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.Configuration doConfigure
INFO: Configured SessionFactory: null
Jul 17, 2009 1:16:58 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Using Hibernate built-in connection pool (not for production use!)
Jul 17, 2009 1:16:58 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Hibernate connection pool size: 1
Jul 17, 2009 1:16:58 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: autocommit mode: false
Jul 17, 2009 1:16:58 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: using driver: org.hsqldb.jdbcDriver at URL: jdbc:hsqldb:hsql://localhost
Jul 17, 2009 1:16:58 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: connection properties: {user=sa, password=****}
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: RDBMS: HSQL Database Engine, version: 1.8.0
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC driver: HSQL Database Engine Driver, version: 1.8.0
Jul 17, 2009 1:16:58 PM org.hibernate.dialect.Dialect <init>
INFO: Using dialect: org.hibernate.dialect.HSQLDialect
Jul 17, 2009 1:16:58 PM org.hibernate.transaction.TransactionFactoryFactory buildTransactio
nFactory
INFO: Using default transaction strategy (direct JDBC transactions)
Jul 17, 2009 1:16:58 PM org.hibernate.transaction.TransactionManagerLookupFactory getTransa
ctionManagerLookup
INFO: No TransactionManagerLookup configured (in JTA environment, use of read-write or tran
sactional second-level cache is not recommended)
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic flush during beforeCompletion(): disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic session close at end of transaction: disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch size: 15
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch updates for versioned data: disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Scrollable result sets: enabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC3 getGeneratedKeys(): disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Connection release mode: auto
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default batch fetch size: 1
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Generate SQL with comments: disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL updates by primary key: disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL inserts for batching: disabled
Jul 17, 2009 1:16:58 PM org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory
INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
Jul 17, 2009 1:16:59 PM org.hibernate.hql.ast.ASTQueryTranslatorFactory <init>
INFO: Using ASTQueryTranslatorFactory
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query language substitutions: {}
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JPA-QL strict compliance: disabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Second-level cache: enabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query cache: disabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory createCacheProvider
INFO: Cache provider: org.hibernate.cache.NoCacheProvider
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Optimize cache for minimal puts: disabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Structured second-level cache entries: disabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Echoing all SQL to stdout
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Statistics: disabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Deleted entity synthetic identifier rollback: disabled
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default entity-mode: pojo
Jul 17, 2009 1:16:59 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Named query checking : enabled
Jul 17, 2009 1:16:59 PM org.hibernate.impl.SessionFactoryImpl <init>
INFO: building session factory
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] An exception occured while executing the Java class. null
org.objectweb.asm.ClassWriter.<init>(I)V
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: An exception occured while executin
g the Java class. null
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycl
eExecutor.java:703)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(Defaul
tLifecycleExecutor.java:553)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycle
Executor.java:523)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures
(DefaultLifecycleExecutor.java:371)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultL
ifecycleExecutor.java:332)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExec
utor.java:181)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav
a: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 execu
ting the Java class. null
at org.codehaus.mojo.exec.ExecJavaMojo.execute(ExecJavaMojo.java:338)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.ja
va:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycl
eExecutor.java:678)
... 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.jav
a:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:283)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ExceptionInInitializerError
at persistence.HibernateUtil.<clinit>(HibernateUtil.java:17)
at hello.HelloWorld.main(HelloWorld.java:14)
... 6 more
Caused by: java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.<init>(I)V
at net.sf.cglib.core.DebuggingClassWriter.<init>(DebuggingClassWriter.java:47)
at net.sf.cglib.core.DefaultGeneratorStrategy.getClassWriter(DefaultGeneratorStrate
gy.java:30)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.jav
a:24)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyIni
tializer.java:117)
at org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFacto
ry.java:43)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTupliz
er.java:162)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.
java:135)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntity
ModeToTuplizerMapping.java:56)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:302)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPers
ister.java:434)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEnti
tyPersister.java:109)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.j
ava:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:226)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1300)
at persistence.HibernateUtil.<clinit>(HibernateUtil.java:15)
... 7 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17 seconds
[INFO] Finished at: Fri Jul 17 13:17:00 IST 2009
[INFO] Final Memory: 7M/12M
[INFO] ------------------------------------------------------------------------
Jul 17, 2009 1:17:00 PM org.hibernate.connection.DriverManagerConnectionProvider close
INFO: cleaning up connection pool: jdbc:hsqldb:hsql://localhost
I have wasted two days in finding what the problem is . Somebody please help me figuring out what the problem is
Login
FAQ
Search
