HHH-15069 Fix backwards-incompatible changes for implementors of BulkInsertionCapableIdentifierGenerator

Author: yrodiere

hibernate-core/src/main/java/org/hibernate/id/BulkInsertionCapableIdentifierGenerator.java

@@ -7,6 +7,7 @@
 package org.hibernate.id;
 
 import org.hibernate.boot.model.relational.SqlStringGenerationContext;
+import org.hibernate.dialect.Dialect;
 
 /**
  * Specialized contract for {@link IdentifierGenerator} implementations capable of being used in conjunction
@@ -32,5 +33,18 @@ public interface BulkInsertionCapableIdentifierGenerator extends IdentifierGener
 	 *
 	 * @return The identifier value generation fragment (SQL).  {@code null} indicates that no fragment is needed.
 	 */
-	public String determineBulkInsertionIdentifierGenerationSelectFragment(SqlStringGenerationContext context);
+	default String determineBulkInsertionIdentifierGenerationSelectFragment(Dialect dialect) {
+		throw new IllegalStateException("determineBulkInsertionIdentifierGenerationSelectFragment(...) was not implemented!");
+	}
+
+	/**
+	 * Return the select expression fragment, if any, that generates the identifier values.
+	 *
+	 * @param context A context for SQL string generation.
+	 *
+	 * @return The identifier value generation fragment (SQL).  {@code null} indicates that no fragment is needed.
+	 */
+	default String determineBulkInsertionIdentifierGenerationSelectFragment(SqlStringGenerationContext context) {
+		return determineBulkInsertionIdentifierGenerationSelectFragment( context.getDialect() );
+	}
 }