New to Hibernate. Working on a sample. I am getting "net.sf.hibernate.MappingException: Bad identifier type: net.sf.hibernate.type.ComponentType" - error. I tried my best to find out from this forum to resolve it but not succeeded. The mapping files are generated through Hibernate tools

Please help me. The details are as follows:

Hibernate version:2.1.8

Hibernate Tools: org.hibernate.eclipse_3.0.0.alpha plugin for eclipse

Config document: 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>
<property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1531:ods1</property>
<property name="hibernate.cglib.use_reflection_optimizer">true</property>
<property name="hibernate.connection.password">u277956</property>
<property name="hibernate.connection.username">u277956</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="hibernate.default_schema">U277956</property>
<property name="hibernate.show_sql">true</property>
<property name="hibernate.max_fetch_depth">1</property>
<mapping resource="com/ual/Flights.hbm.xml" />
<mapping resource="com/ual/Reservations.hbm.xml" />
<mapping resource="com/ual/Persons.hbm.xml" />
</session-factory>
</hibernate-configuration>

Mapping documents: Flights.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>
<!--
Auto-generated mapping file from
the hibernate.org cfg2hbm engine
-->
<class name="com.ual.Flights" table="FLIGHTS" schema="U277956">
<id name="flightId" type="java.math.BigDecimal">
<column name="FLIGHT_ID" length="8" not-null="true" unique="true" sql-type="NUMBER" />
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String">
<column name="NAME" length="32" not-null="true" sql-type="VARCHAR2" />
</property>
<property name="departureUtc" type="java.util.Date">
<column name="DEPARTURE_UTC" length="7" not-null="true" sql-type="DATE" />
</property>
<property name="arrivalUtc" type="java.util.Date">
<column name="ARRIVAL_UTC" length="7" not-null="true" sql-type="DATE" />
</property>
<set name="setOfReservations">
<key>
<column name="FLIGHT_ID" length="8" not-null="false" />
</key>
<one-to-many class="com.ual.Reservations" />
</set>
</class>
</hibernate-mapping>

Mapping documents: Persons.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>
<!--
Auto-generated mapping file from
the hibernate.org cfg2hbm engine
-->
<class name="com.ual.Persons" table="PERSONS" schema="U277956">
<id name="personId" type="java.math.BigDecimal">
<column name="PERSON_ID" length="8" not-null="true" unique="true" sql-type="NUMBER" />
<generator class="assigned" />
</id>
<property name="firstName" type="java.lang.String">
<column name="FIRST_NAME" length="32" not-null="true" sql-type="VARCHAR2" />
</property>
<property name="lastName" type="java.lang.String">
<column name="LAST_NAME" length="32" not-null="true" sql-type="VARCHAR2" />
</property>
<set name="setOfReservations">
<key>
<column name="PERSON_ID" length="8" not-null="false" />
</key>
<one-to-many class="com.ual.Reservations" />
</set>
</class>
</hibernate-mapping>

Mapping documents: Reservations.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>
<!--
Auto-generated mapping file from
the hibernate.org cfg2hbm engine
-->
<class name="com.ual.Reservations" table="RESERVATIONS" schema="U277956">
<composite-id name="id" class="com.ual.ReservationsId">
<key-many-to-one name="flights" class="com.ual.Flights">
<column name="FLIGHT_ID" length="8" not-null="false" />
</key-many-to-one>
<key-many-to-one name="persons" class="com.ual.Persons">
<column name="PERSON_ID" length="8" not-null="false" />
</key-many-to-one>
<key-property name="reservationId" type="java.math.BigDecimal">
<column name="RESERVATION_ID" length="8" not-null="true" sql-type="NUMBER" />
</key-property>
</composite-id>
<property name="registrationUtc" type="java.util.Date">
<column name="REGISTRATION_UTC" length="7" not-null="true" sql-type="DATE" />
</property>
<property name="commentary" type="java.lang.String">
<column name="COMMENTARY" length="200" not-null="false" sql-type="VARCHAR2" />
</property>
</class>
</hibernate-mapping>


Code between sessionFactory.openSession() and session.close():
public static void main(String[] args) throws Exception {

final MyTest myTest = new MyTest();

Configuration cfg = new Configuration();
cfg.configure("/hibernate.cfg.xml");

myTest.factory = cfg.buildSessionFactory();

System.out.println("Getting all Names");
//myTest.viewAllNames();

myTest.factory.close();

}

Full stack trace of any exception that occurs:
log4j:WARN No appenders could be found for logger (net.sf.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
net.sf.hibernate.MappingException: Bad identifier type: net.sf.hibernate.type.ComponentType
at net.sf.hibernate.persister.AbstractEntityPersister.<init>(AbstractEntityPersister.java:669)
at net.sf.hibernate.persister.EntityPersister.<init>(EntityPersister.java:690)
at net.sf.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:42)
at net.sf.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:137)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:805)
at MyTest.main(MyTest.java:61)
Exception in thread "main"

Name and version of the database you are using:
Oracle 9i

The generated SQL (show_sql=true):
N/A

Debug level Hibernate log excerpt:
N/A[/quote]