11.5.4. The ServiceRegistry About the ServiceRegistry

The central service API, aside from the services themselves, is the org.hibernate.service.ServiceRegistry interface. The main purpose of a service registry is to hold, manage and provide access to services.
Service registries are hierarchical. Services in one registry can depend on and utilize services in that same registry as well as any parent registries.
Use org.hibernate.service.ServiceRegistryBuilder to build a org.hibernate.service.ServiceRegistry instance.

Example 11.21. Use ServiceRegistryBuilder to create a ServiceRegistry

ServiceRegistryBuilder registryBuilder = new ServiceRegistryBuilder( bootstrapServiceRegistry );
    ServiceRegistry serviceRegistry = registryBuilder.buildServiceRegistry();