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Hibernate

One-to-Many Mapping
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This type of association relates one entity object to many object of another entity.

Example:-

Relationship between a department and employee.Many employee can work in a single department.

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">

<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>
<property name="connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
<property name="connection.username">system</property>
<property name="connection.password">system</property>
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<mapping resource="listAndBag.hbm.xml"/>
</session-factory>
</hibernate-configuration>

Batch.java

package r4r;

public class Batch {
int id;
String time,course,mode;
Trainer trainer;
public Batch() {
super();
}
public Batch(String time, String course, String mode,Trainer t) {
super();
this.time = time;
this.course = course;
this.mode = mode;
this.trainer=t;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getCourse() {
return course;
}
public void setCourse(String course) {
this.course = course;
}
public String getMode() {
return mode;
}
public void setMode(String mode) {
this.mode = mode;
}
public Trainer getTrainer() {
return trainer;
}
public void setTrainer(Trainer trainer) {
this.trainer = trainer;
}
}
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