HHH-14899 Have SessionImpl override the default method getConfiguredJdbcBatchSize

hibernate-core/src/main/java/org/hibernate/internal/FastSessionServices.java

@@ -160,6 +160,7 @@ public final class FastSessionServices {
 	final boolean discardOnClose;
 	final BaselineSessionEventsListenerBuilder defaultSessionEventListeners;
 	final LockOptions defaultLockOptions;
+	final int defaultJdbcBatchSize;
 
 	//Private fields:
 	private final Dialect dialect;
@@ -217,6 +218,7 @@ public final class FastSessionServices {
 		this.disallowOutOfTransactionUpdateOperations = !sessionFactoryOptions.isAllowOutOfTransactionUpdateOperations();
 		this.useStreamForLobBinding = Environment.useStreamsForBinary() || dialect.useInputStreamToInsertBlob();
 		this.requiresMultiTenantConnectionProvider = sf.getSettings().getMultiTenancyStrategy().requiresMultiTenantConnectionProvider();
+		this.defaultJdbcBatchSize = sessionFactoryOptions.getJdbcBatchSize();
 
 		//Some "hot" services:
 		this.connectionProvider = requiresMultiTenantConnectionProvider ? null : sr.getService( ConnectionProvider.class );

hibernate-core/src/main/java/org/hibernate/internal/SessionImpl.java

@@ -300,6 +300,20 @@ public class SessionImpl
 		return new ActionQueue( this );
 	}
 
+	/**
+	 * Override the implementation provided on SharedSessionContractImplementor
+	 * which is not very efficient: this method is hot in Hibernate Reactive, and could
+	 * be hot in some ORM contexts as well.
+	 * @return
+	 */
+	@Override
+	public Integer getConfiguredJdbcBatchSize() {
+		final Integer sessionJdbcBatchSize = getJdbcBatchSize();
+		return sessionJdbcBatchSize == null ?
+				fastSessionServices.defaultJdbcBatchSize :
+				sessionJdbcBatchSize;
+	}
+
 	private LockOptions getLockOptionsForRead() {
 		return this.lockOptions == null ? fastSessionServices.defaultLockOptions : this.lockOptions;
 	}