HHH-14257 Add test for issue

hibernate-core/src/test/java/org/hibernate/test/collection/map/EmbeddableIndexTest.java

@@ -0,0 +1,171 @@
+/*
+ * 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.test.collection.map;
+
+import java.io.Serializable;
+import java.util.HashMap;
+import java.util.Map;
+import javax.persistence.Embeddable;
+import javax.persistence.EmbeddedId;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+import javax.persistence.MapKey;
+import javax.persistence.OneToMany;
+
+import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.notNullValue;
+import static org.hamcrest.CoreMatchers.sameInstance;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+/**
+ * @author Andrea Boriero
+ */
+public class EmbeddableIndexTest extends BaseCoreFunctionalTestCase {
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] { TheOne.class, TheMany.class };
+	}
+
+	@Before
+	public void setUp() {
+		inTransaction(
+				session -> {
+					TheOne one = new TheOne( "1" );
+					session.save( one );
+
+					TheMapKey theMapKey = new TheMapKey( one );
+					TheMany theMany = new TheMany( theMapKey );
+					session.save( theMany );
+
+					Map<TheMapKey, TheMany> map = new HashMap<>();
+					map.put( theMapKey, theMany );
+					one.setTheManys( map );
+				}
+		);
+	}
+
+	@Test
+	public void testIt() {
+		inSession(
+				session -> {
+					TheOne one = session.get( TheOne.class, "1" );
+					TheMapKey theMapKey = one.getTheManys().keySet().iterator().next();
+					assertThat( theMapKey, is( notNullValue() ) );
+					assertThat( theMapKey.getTheOne(), sameInstance( one ) );
+				}
+		);
+
+
+	}
+
+	@Entity(name = "TheOne")
+	public static class TheOne {
+		private String id;
+		private String aString;
+		private Map<TheMapKey, TheMany> theManys = new HashMap<>();
+
+		TheOne() {
+		}
+
+		public TheOne(String id) {
+			this.id = id;
+		}
+
+		@Id
+		public String getId() {
+			return this.id;
+		}
+
+		public void setId(String id) {
+			this.id = id;
+		}
+
+		@OneToMany(mappedBy = "theMapKey.theOne")
+		@MapKey(name = "theMapKey")
+		public Map<TheMapKey, TheMany> getTheManys() {
+			return theManys;
+		}
+
+		public void setTheManys(Map<TheMapKey, TheMany> theManys) {
+			this.theManys = theManys;
+		}
+
+		public String getaString() {
+			return aString;
+		}
+
+		public void setaString(String aString) {
+			this.aString = aString;
+		}
+	}
+
+	@Embeddable
+	public static class TheMapKey implements Serializable {
+		private TheOne theOne;
+		private int anInt;
+
+		TheMapKey() {
+		}
+
+		public TheMapKey(TheOne theOne) {
+			this.theOne = theOne;
+		}
+
+		@ManyToOne
+		public TheOne getTheOne() {
+			return theOne;
+		}
+
+		public void setTheOne(TheOne theOne) {
+			this.theOne = theOne;
+		}
+
+		public int getAnInt() {
+			return anInt;
+		}
+
+		public void setAnInt(int anInt) {
+			this.anInt = anInt;
+		}
+	}
+
+	@Entity(name = "TheMany")
+	public static class TheMany {
+		private TheMapKey theMapKey;
+		private String aString;
+
+		TheMany() {
+		}
+
+		public TheMany(TheMapKey theMapKey) {
+			this.theMapKey = theMapKey;
+		}
+
+		@EmbeddedId
+		public TheMapKey getTheMapKey() {
+			return theMapKey;
+		}
+
+		public void setTheMapKey(TheMapKey theMapKey) {
+			this.theMapKey = theMapKey;
+		}
+
+		public String getaString() {
+			return aString;
+		}
+
+		public void setaString(String aString) {
+			this.aString = aString;
+		}
+	}
+}