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">oracle.jdbc.driver.OracleDriver</property>
<property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
<property name="connection.username">system</property>
<property name="connection.password">orcl</property><!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">2</property><!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.Oracle9Dialect</property><!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property><property name="hbm2ddl.auto">create</property>
<property name="current_session_context_class">thread</property>
<mapping resource="com/demo/manyToMany/Project.hbm.xml"/>
<mapping resource="com/demo/manyToMany/Employee.hbm.xml"/></session-factory>
</hibernate-configuration>
package com.demo.manyToMany;import java.util.HashSet;
import java.util.Set;public class Employee {
public Employee(){}
public Employee(int id, String name, Set<Project> projects) {
super();
this.id = id;
this.name = name;
this.projects = projects;
}private int id;
private String name;
private Set<Project> projects = new HashSet<Project>();public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<Project> getProjects() {
return projects;
}
public void setProjects(Set<Project> projects) {
this.projects = projects;
}
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping
package="com.demo.manyToMany"><class name="Employee" table="Employee">
<id name="id">
<generator class="sequence">
<param name="sequence">seq_projectSys_employee</param>
</generator>
</id>
<property name="name"/>
<set name="projects" table="EmployeeProject" inverse="true">
<key column="employee_id" />
<many-to-many class="Project" column="project_id" />
</set>
</class></hibernate-mapping>
package com.demo.manyToMany;import java.util.HashSet;
import java.util.Set;public class Project {
public Project(){}
public Project(int id, String name, Set<Employee> employees) {
super();
this.id = id;
this.name = name;
this.employees = employees;
}
private int id;
private String name;
private Set<Employee> employees = new HashSet<Employee>();public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Set<Employee> getEmployees() {
return employees;
}
public void setEmployees(Set<Employee> employees) {
this.employees = employees;
}}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping
package="com.demo.manyToMany"><class name="Project" table="Project">
<id name="id">
<generator class="sequence">
<param name="sequence">seq_projectSys_project</param>
</generator>
</id>
<property name="name"/>
<set name="employees" table="EmployeeProject">
<key column="project_id" />
<many-to-many class="Employee" column="employee_id" />
</set>
</class></hibernate-mapping>
chapter 01