If you are getting class not found exception for a particular library upon deploying the application then check If the ‘Deploy by default’ option is checked for the library in your application.
If the library is referred in the Weblogic-application.xml then make sure that the library has to be deployed to the server. This will be referred in you Weblogic-application.xml as
<library-ref> <library-name>adf.oracle.domain</library-name> </library-ref>
Here is the way to configure hibernate to work on JDeveloper
First thing first
As you know the three main things in setting up any hibernate is to have
To make this work for JDeveloper, download the latest version of hibernate3
Refer the downloaded location in the projects library and classpath by Adding a Library(Add Library) – Create New – Add Entry
Provide the Library Name as ‘Hibernate’ (can be of your choice) and add the following libraries
Have the hibernate.cfg.xml file in your current working directory
<?xml version='1.0' encoding='utf-8'?> <!--<span class="hiddenSpellError" pre=""-->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">oracle.jdbc.driver.OracleDriver <property name="connection.url">jdbc:oracle:thin:@localhost:1521:XE <property name="connection.username">system</property> <property name="connection.password">fusion</property> <!-- <span class="hiddenSpellError" pre="">JDBC</span> connection pool (use the built-in) --> <property name="connection.pool_size">1</property> <!-- SQL dialect --> <property name="dialect">org.hibernate.dialect.OracleDialect</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 <span class="hiddenSpellError" pre="to ">stdout</span> --> <property name="show_sql">true</property> <!-- Drop and re-create the database schema on startup --> <property name="hbm2ddl.auto">create</property> <mapping resource="Simple.hbm.xml"/> </session-factory> </hibernate-configuration>
The configuration file is for Oracle driver.. this can be changed
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property> <property name="connection.url">jdbc:oracle:thin:@localhost:1521:XE <property name="connection.username">system</property> <property name="connection.password">fusion</property>
You have to specify the mapping file also
<mapping resource="Simple.hbm.xml"/>
the highlighted libraries are added from slf4j to overcome
As the final step, represent the db table of yours as a simple pojo class (Simple.java) like
public class Simple {
private Long id;
private String title;
private Date date;
public Simple() {}
public Long getId() {
return id;
}
private void setId(Long id) {
this.id = id;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
private Set participants = new HashSet();
public Set getParticipants() {
return participants;
}
public void setParticipants(Set participants) {
this.participants = participants;
}
}
where id, title and date represents the column name of the table in the db
Have a corresponding mapping file in the same qualified path (Simple.hbm.xml)
<?xml version="1.0"?> <!--<span class="hiddenSpellError" pre=""-->DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class table="EVENTS"> <id name="id" column="EVENT_ID"> <generator/> </id> <property name="date" column="EVENT_DATE"/> <property name="title"/> </class> </hibernate-mapping>
Have a configFile.java where you instantiate the Configuration, Session and get involved in the transaction
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class ConfigFile {
static Session session;
public ConfigFile() {
super();
}
public static void main(String[] args){
Configuration cfg = new Configuration().configure();
SessionFactory sessions = cfg.buildSessionFactory();
Session sess = sessions.openSession();
session = sess;
Simple s = new Simple();
s.setTitle("hi");
session.save(s);
}
}
Run the configFile.java.. that’s it. 🙂
Whenever you create a deployment profile for the model project in ADF you wil select the ADF Library type rather an ordinary library type (java jar type)
Both act as a library archive supporting jar and zip files
What is the difference then?
They point the finger at me.. again! 
