HHH-19962 HHH-19985 Add test for issue

Author: mbellade

hibernate-core/src/test/java/org/hibernate/orm/test/embeddable/EmbeddableSameNestedNameSelectionTest.java

@@ -0,0 +1,222 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.embeddable;
+
+import jakarta.persistence.AttributeOverride;
+import jakarta.persistence.AttributeOverrides;
+import jakarta.persistence.Column;
+import jakarta.persistence.Embeddable;
+import jakarta.persistence.Embedded;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Tuple;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.Jira;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@DomainModel(annotatedClasses = {
+		EmbeddableSameNestedNameSelectionTest.Material.class,
+		EmbeddableSameNestedNameSelectionTest.Weight.class,
+		EmbeddableSameNestedNameSelectionTest.Length.class
+})
+@SessionFactory
+@Jira("https://hibernate.atlassian.net/browse/HHH-19962")
+@Jira("https://hibernate.atlassian.net/browse/HHH-19985")
+public class EmbeddableSameNestedNameSelectionTest {
+
+	@Test
+	void testPlainEntity(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final var result = session.createSelectionQuery( "from Material", Material.class )
+					.getSingleResult();
+			assertThat( result.getWeight().getValue() ).isEqualTo( "10" );
+			assertThat( result.getLength().getValue() ).isEqualTo( "2" );
+		} );
+	}
+
+	@Test
+	void testSubqueryEmbedded(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final var result = session.createSelectionQuery(
+					"select q.weight as weight, q.length as length from (select m.weight as weight, m.length as length from Material m) q",
+					Tuple.class
+			).getSingleResult();
+			assertEmbeddedTuple( result );
+		} );
+	}
+
+	@Test
+	void testEmbedded(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final var result = session.createSelectionQuery(
+					"select m.weight as weight, m.length as length from Material m",
+					Tuple.class
+			).getSingleResult();
+			assertEmbeddedTuple( result );
+		} );
+	}
+
+	private void assertEmbeddedTuple(Tuple result) {
+		final var weight = result.get( "weight", Weight.class );
+		assertThat( weight.getValue() ).isEqualTo( "10" );
+		assertThat( weight.getUnit() ).isEqualTo( WeightUnit.KILOGRAM );
+		final var length = result.get( "length", Length.class );
+		assertThat( length.getValue() ).isEqualTo( "2" );
+		assertThat( length.getUnit() ).isEqualTo( LengthUnit.METER );
+	}
+
+	@Test
+	void testSubqueryScalar(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final var result = session.createSelectionQuery(
+					"select q.weight, q.weight_unit, q.length, q.length_unit from "
+					+ "(select m.weight.value as weight, m.weight.unit as weight_unit, m.length.value as length, m.length.unit as length_unit from Material m) q",
+					Tuple.class
+			).getSingleResult();
+			assertScalarTuple( result );
+		} );
+	}
+
+	@Test
+	void testScalar(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final var result = session.createSelectionQuery(
+					"select m.weight.value, m.weight.unit, m.length.value, m.length.unit from Material m",
+					Tuple.class
+			).getSingleResult();
+			assertScalarTuple( result );
+		} );
+	}
+
+	private void assertScalarTuple(Tuple result) {
+		assertThat( result.get( 0, String.class ) ).isEqualTo( "10" );
+		assertThat( result.get( 1, WeightUnit.class ) ).isEqualTo( WeightUnit.KILOGRAM );
+		assertThat( result.get( 2, String.class ) ).isEqualTo( "2" );
+		assertThat( result.get( 3, LengthUnit.class ) ).isEqualTo( LengthUnit.METER );
+	}
+
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction( session -> session.persist(
+				new Material( 1L, new Weight( "10", WeightUnit.KILOGRAM ), new Length( "2", LengthUnit.METER ) )
+		) );
+	}
+
+	@AfterAll
+	public void tearDown(SessionFactoryScope scope) {
+		scope.getSessionFactory().getSchemaManager().truncateMappedObjects();
+	}
+
+	@Entity(name = "Material")
+	static class Material {
+		@Id
+		private Long id;
+
+		@Embedded
+		@AttributeOverrides({
+				@AttributeOverride(name = "value", column = @Column(name = "weight_value")),
+				@AttributeOverride(name = "unit", column = @Column(name = "weight_unit")),
+		})
+		private Weight weight;
+
+		@Embedded
+		@AttributeOverrides({
+				@AttributeOverride(name = "value", column = @Column(name = "length_value")),
+				@AttributeOverride(name = "unit", column = @Column(name = "length_unit")),
+		})
+		private Length length;
+
+		public Material() {
+		}
+
+		public Material(Long id, Weight weight, Length length) {
+			this.id = id;
+			this.weight = weight;
+			this.length = length;
+		}
+
+		public Long getId() {
+			return id;
+		}
+
+		public Weight getWeight() {
+			return weight;
+		}
+
+		public void setWeight(Weight weight) {
+			this.weight = weight;
+		}
+
+		public Length getLength() {
+			return length;
+		}
+
+		public void setLength(Length length) {
+			this.length = length;
+		}
+	}
+
+	@Embeddable
+	static class Weight {
+		private String value;
+
+		private WeightUnit unit;
+
+		public Weight() {
+		}
+
+		public Weight(String value, WeightUnit unit) {
+			this.value = value;
+			this.unit = unit;
+		}
+
+		public String getValue() {
+			return value;
+		}
+
+		public WeightUnit getUnit() {
+			return unit;
+		}
+	}
+
+	enum WeightUnit {
+		KILOGRAM,
+		POUND
+	}
+
+	@Embeddable
+	static class Length {
+		private String value;
+
+		private LengthUnit unit;
+
+		public Length() {
+		}
+
+		public Length(String value, LengthUnit unit) {
+			this.value = value;
+			this.unit = unit;
+		}
+
+		public String getValue() {
+			return value;
+		}
+
+		public LengthUnit getUnit() {
+			return unit;
+		}
+	}
+
+	enum LengthUnit {
+		METER,
+		FOOT
+	}
+}