HHH-10669 - Allow to add SF-scoped services through a ServiceContributor

hibernate-core/src/main/java/org/hibernate/service/internal/SessionFactoryServiceRegistryBuilderImpl.java

@@ -0,0 +1,84 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.service.internal;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.hibernate.boot.spi.SessionFactoryOptions;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.service.Service;
+import org.hibernate.service.spi.ServiceRegistryImplementor;
+import org.hibernate.service.spi.SessionFactoryServiceInitiator;
+import org.hibernate.service.spi.SessionFactoryServiceRegistry;
+import org.hibernate.service.spi.SessionFactoryServiceRegistryBuilder;
+
+/**
+ * @author Steve Ebersole
+ */
+public class SessionFactoryServiceRegistryBuilderImpl implements SessionFactoryServiceRegistryBuilder {
+	private final ServiceRegistryImplementor parent;
+
+	private final List<SessionFactoryServiceInitiator> initiators = standardInitiatorList();
+	private final List<ProvidedService> providedServices = new ArrayList<>();
+
+	public SessionFactoryServiceRegistryBuilderImpl(ServiceRegistryImplementor parent) {
+		this.parent = parent;
+	}
+
+	/**
+	 * Used from the {@link #initiators} variable initializer
+	 *
+	 * @return List of standard initiators
+	 */
+	private static List<SessionFactoryServiceInitiator> standardInitiatorList() {
+		final List<SessionFactoryServiceInitiator> initiators = new ArrayList<>();
+		initiators.addAll( StandardSessionFactoryServiceInitiators.LIST );
+		return initiators;
+	}
+
+	/**
+	 * Adds a service initiator.
+	 *
+	 * @param initiator The initiator to be added
+	 *
+	 * @return this, for method chaining
+	 */
+	@Override
+	@SuppressWarnings( {"UnusedDeclaration"})
+	public SessionFactoryServiceRegistryBuilder addInitiator(SessionFactoryServiceInitiator initiator) {
+		initiators.add( initiator );
+		return this;
+	}
+
+	/**
+	 * Adds a user-provided service.
+	 *
+	 * @param serviceRole The role of the service being added
+	 * @param service The service implementation
+	 *
+	 * @return this, for method chaining
+	 */
+	@Override
+	@SuppressWarnings( {"unchecked"})
+	public SessionFactoryServiceRegistryBuilder addService(final Class serviceRole, final Service service) {
+		providedServices.add( new ProvidedService( serviceRole, service ) );
+		return this;
+	}
+
+	public SessionFactoryServiceRegistry buildSessionFactoryServiceRegistry(
+			SessionFactoryImplementor sessionFactory,
+			SessionFactoryOptions options) {
+		return new SessionFactoryServiceRegistryImpl(
+				parent,
+				initiators,
+				providedServices,
+				sessionFactory,
+				options
+		);
+	}
+}

hibernate-core/src/main/java/org/hibernate/service/internal/SessionFactoryServiceRegistryFactoryImpl.java

@@ -6,9 +6,12 @@
  */
 package org.hibernate.service.internal;
 
+import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
 import org.hibernate.boot.spi.SessionFactoryOptions;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.service.spi.ServiceRegistryImplementor;
+import org.hibernate.service.spi.SessionFactoryServiceContributor;
+import org.hibernate.service.spi.SessionFactoryServiceRegistry;
 import org.hibernate.service.spi.SessionFactoryServiceRegistryFactory;
 
 /**
@@ -25,9 +28,16 @@ public class SessionFactoryServiceRegistryFactoryImpl implements SessionFactoryS
 	}
 
 	@Override
-	public SessionFactoryServiceRegistryImpl buildServiceRegistry(
+	public SessionFactoryServiceRegistry buildServiceRegistry(
 			SessionFactoryImplementor sessionFactory,
 			SessionFactoryOptions options) {
-		return new SessionFactoryServiceRegistryImpl( theBasicServiceRegistry, sessionFactory, options );
+		final ClassLoaderService cls = options.getServiceRegistry().getService( ClassLoaderService.class );
+		final SessionFactoryServiceRegistryBuilderImpl builder = new SessionFactoryServiceRegistryBuilderImpl( theBasicServiceRegistry );
+
+		for ( SessionFactoryServiceContributor contributor : cls.loadJavaServices( SessionFactoryServiceContributor.class ) ) {
+			contributor.contribute( builder );
+		}
+
+		return builder.buildSessionFactoryServiceRegistry( sessionFactory, options );
 	}
 }

hibernate-core/src/main/java/org/hibernate/service/internal/SessionFactoryServiceRegistryImpl.java

@@ -6,6 +6,8 @@
  */
 package org.hibernate.service.internal;
 
+import java.util.List;
+
 import org.hibernate.boot.spi.SessionFactoryOptions;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.service.Service;
@@ -26,6 +28,8 @@ public class SessionFactoryServiceRegistryImpl extends AbstractServiceRegistryIm
 	@SuppressWarnings( {"unchecked"})
 	public SessionFactoryServiceRegistryImpl(
 			ServiceRegistryImplementor parent,
+			List<SessionFactoryServiceInitiator> initiators,
+			List<ProvidedService> providedServices,
 			SessionFactoryImplementor sessionFactory,
 			SessionFactoryOptions sessionFactoryOptions) {
 		super( parent );
@@ -34,10 +38,15 @@ public class SessionFactoryServiceRegistryImpl extends AbstractServiceRegistryIm
 		this.sessionFactoryOptions = sessionFactoryOptions;
 
 		// for now, just use the standard initiator list
-		for ( SessionFactoryServiceInitiator initiator : StandardSessionFactoryServiceInitiators.LIST ) {
+		for ( SessionFactoryServiceInitiator initiator : initiators ) {
 			// create the bindings up front to help identify to which registry services belong
 			createServiceBinding( initiator );
 		}
+
+		for ( ProvidedService providedService : providedServices ) {
+			createServiceBinding( providedService );
+		}
+
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/service/internal/StandardSessionFactoryServiceInitiators.java

@@ -26,7 +26,7 @@ public class StandardSessionFactoryServiceInitiators {
 	public static List<SessionFactoryServiceInitiator> LIST = buildStandardServiceInitiatorList();
 
 	private static List<SessionFactoryServiceInitiator> buildStandardServiceInitiatorList() {
-		final List<SessionFactoryServiceInitiator> serviceInitiators = new ArrayList<SessionFactoryServiceInitiator>();
+		final List<SessionFactoryServiceInitiator> serviceInitiators = new ArrayList<>();
 
 		serviceInitiators.add( EventListenerServiceInitiator.INSTANCE );
 		serviceInitiators.add( StatisticsInitiator.INSTANCE );

hibernate-core/src/main/java/org/hibernate/service/spi/ServiceContributor.java

@@ -19,5 +19,5 @@ public interface ServiceContributor {
 	 *
 	 * @param serviceRegistryBuilder The builder to which services (or initiators) should be contributed.
 	 */
-	public void contribute(StandardServiceRegistryBuilder serviceRegistryBuilder);
+	void contribute(StandardServiceRegistryBuilder serviceRegistryBuilder);
 }

hibernate-core/src/main/java/org/hibernate/service/spi/SessionFactoryServiceContributor.java

@@ -0,0 +1,19 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.service.spi;
+
+/**
+ * @author Steve Ebersole
+ */
+public interface SessionFactoryServiceContributor {
+	/**
+	 * Contribute services to the indicated registry builder.
+	 *
+	 * @param serviceRegistryBuilder The builder to which services (or initiators) should be contributed.
+	 */
+	void contribute(SessionFactoryServiceRegistryBuilder serviceRegistryBuilder);
+}

hibernate-core/src/main/java/org/hibernate/service/spi/SessionFactoryServiceRegistryBuilder.java

@@ -0,0 +1,19 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.service.spi;
+
+import org.hibernate.service.Service;
+
+/**
+ * @author Steve Ebersole
+ */
+public interface SessionFactoryServiceRegistryBuilder {
+	SessionFactoryServiceRegistryBuilder addInitiator(SessionFactoryServiceInitiator initiator);
+
+	@SuppressWarnings( {"unchecked"})
+	SessionFactoryServiceRegistryBuilder addService(Class serviceRole, Service service);
+}

hibernate-core/src/main/java/org/hibernate/service/spi/SessionFactoryServiceRegistryFactory.java

@@ -9,7 +9,6 @@ package org.hibernate.service.spi;
 import org.hibernate.boot.spi.SessionFactoryOptions;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.service.Service;
-import org.hibernate.service.internal.SessionFactoryServiceRegistryImpl;
 
 /**
  * Contract for builder of {@link SessionFactoryServiceRegistry} instances.
@@ -29,7 +28,7 @@ public interface SessionFactoryServiceRegistryFactory extends Service {
 	 *
 	 * @return The registry
 	 */
-	public SessionFactoryServiceRegistryImpl buildServiceRegistry(
+	SessionFactoryServiceRegistry buildServiceRegistry(
 			SessionFactoryImplementor sessionFactory,
 			SessionFactoryOptions sessionFactoryOptions);