HHH-18486 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/dynamicmap/CustomEntityNameResolverTest.java

@@ -0,0 +1,58 @@
+/*
+ * 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.orm.test.dynamicmap;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.hibernate.EntityNameResolver;
+import org.hibernate.cfg.AvailableSettings;
+import org.hibernate.cfg.Configuration;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+
+import org.hibernate.testing.orm.junit.Jira;
+import org.junit.jupiter.api.Test;
+
+import static org.hibernate.testing.transaction.TransactionUtil2.inTransaction;
+import static org.hibernate.tool.schema.Action.ACTION_CREATE_THEN_DROP;
+
+/**
+ * @author Marco Belladelli
+ */
+@Jira( "https://hibernate.atlassian.net/browse/HHH-18486" )
+public class CustomEntityNameResolverTest {
+	@Test
+	public void test() {
+		final Configuration configuration = new Configuration();
+		configuration.setProperty( AvailableSettings.HBM2DDL_AUTO, ACTION_CREATE_THEN_DROP );
+		configuration.setProperty( AvailableSettings.SHOW_SQL, Boolean.TRUE.toString() );
+		configuration.setProperty( AvailableSettings.FORMAT_SQL, Boolean.TRUE.toString() );
+		configuration.addResource( "org/hibernate/orm/test/dynamicmap/artist.hbm.xml" );
+		configuration.addEntityNameResolver( new HibernateEntityNameResolver() );
+		try (final SessionFactoryImplementor sf = (SessionFactoryImplementor) configuration.buildSessionFactory()) {
+			inTransaction( sf, session -> {
+				final Map<String, Object> artistEntity = new HashMap<>();
+				artistEntity.put( "id", 1 );
+				artistEntity.put( "firstname", "John" );
+				artistEntity.put( "lastname", "Doe" );
+				// Persist the dynamic map entity
+				session.persist( artistEntity );
+			} );
+			sf.getSchemaManager().truncateMappedObjects();
+		}
+	}
+
+	static class HibernateEntityNameResolver implements EntityNameResolver {
+		@Override
+		public String resolveEntityName(Object entity) {
+			if ( entity instanceof Map ) {
+				return "artist";
+			}
+			return null;
+		}
+	}
+}

hibernate-core/src/test/resources/org/hibernate/orm/test/dynamicmap/artist.hbm.xml

@@ -0,0 +1,9 @@
+<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
+                                   "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
+<hibernate-mapping>
+    <class entity-name="artist" lazy="true" table="ARTISTS">
+        <id name="id" type="int" />
+        <property name="firstname" type="string" />
+        <property name="lastname" type="string" />
+    </class>
+</hibernate-mapping>