gistfile1.java

@Entity
@FilterDef( name="tenantFilter", parameters=@ParamDef( name="tenantId", type="string" ) )
@Filters(
	@Filter( name="tenantFilter", condition="tenant_id = :tenantId" )
	)
	@Filter( name="tenantFilter", condition="tenant_id = :tenantId" )
)
public class Customer {
	@Id
	private Long id;
	@Column( name="tenant_id", nullable=false, updateable=false )
	private String tenantId;
}

public void demonstrateUsageInDiscriminatorScenario() {
	// One thing that must be done on all sessions is to enable the tenant­based Hibernate filter
	// we defined before on the entity. This is usually best handled by some form of "request
	// interceptor" (HttpServletRequestFilter, etc) to make sure it is done uniformly

	// Creating an entity
	Session session = openSession();
	session.enableFilter( "tenantFilter" ).setParameter( "tenantId", "some­tenant­identifier" );
	session.beginTransaction();
	Customer customer = new Customer();
	...
	customer.setTenantId( "some­tenant­identifier" );
	session.persist( customer );
	session.getTransaction().commit();
	session.close();

	// Querying Customers
	session = openSession();
	session.enableFilter( "tenantFilter" ).setParameter( "tenantId", "some­tenant­identifier" );
	session.beginTransaction();

	Customer customer = (Customer) session.createQuery( "from Customer" ).uniqueResult();
	session.getTransaction().commit();
	session.close(); 
}