HHH-16250 Test case for allowing to map same column twice, once with a user type

hibernate-core/src/test/java/org/hibernate/orm/test/mapping/basic/RepeatedMappingUserTypeTests.java

@@ -0,0 +1,188 @@
+/*
+ * 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.mapping.basic;
+
+import java.io.Serializable;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Arrays;
+import java.util.Objects;
+import java.util.Set;
+import java.util.SortedSet;
+import java.util.TreeSet;
+import java.util.stream.Collectors;
+
+import org.hibernate.annotations.Type;
+import org.hibernate.engine.spi.SharedSessionContractImplementor;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.usertype.UserType;
+
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+@JiraKey("HHH-16250")
+@DomainModel(annotatedClasses = RepeatedMappingUserTypeTests.TheEntity.class)
+@SessionFactory
+public class RepeatedMappingUserTypeTests {
+
+	@Test
+	public void testResolution(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					session.persist( new TheEntity( 1, 123, 456, 789 ) );
+					session.flush();
+					session.clear();
+					final TheEntity theEntity = session.find( TheEntity.class, 1 );
+					assertNotNull( theEntity.getSortedIds() );
+					assertNotNull( theEntity.getSortedIdsExpression() );
+					assertEquals( new TreeSet<>( Arrays.asList( 123, 456, 789 ) ), theEntity.getSortedIds() );
+				}
+		);
+	}
+
+	@Entity(name = "TheEntity")
+	public static class TheEntity {
+		@Id
+		private Integer id;
+
+		@Type(CodeJavaType.class)
+		@Column(name = "SORTED_IDS", nullable = false)
+		private SortedSet<Integer> sortedIds = new TreeSet<>();
+
+		@Column(name = "SORTED_IDS", nullable = false, insertable = false, updatable = false)
+		private String sortedIdsExpression;
+
+		public TheEntity() {
+		}
+
+		public TheEntity(Integer id, Integer... ids) {
+			this.id = id;
+			this.sortedIds.addAll( Arrays.asList( ids ) );
+		}
+
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer id) {
+			this.id = id;
+		}
+
+		public SortedSet<Integer> getSortedIds() {
+			return sortedIds;
+		}
+
+		public void setSortedIds(SortedSet<Integer> sortedIds) {
+			this.sortedIds = sortedIds;
+		}
+
+		public String getSortedIdsExpression() {
+			return sortedIdsExpression;
+		}
+
+		public void setSortedIdsExpression(String sortedIdsExpression) {
+			this.sortedIdsExpression = sortedIdsExpression;
+		}
+	}
+
+	public static class CodeJavaType implements UserType<SortedSet<Integer>>,
+			AttributeConverter<SortedSet<Integer>, String> {
+
+		@Override
+		public int getSqlType() {
+			return SqlTypes.VARCHAR;
+		}
+
+		@Override
+		public Class<SortedSet<Integer>> returnedClass() {
+			//noinspection unchecked
+			return (Class) Set.class;
+		}
+
+		@Override
+		public boolean equals(SortedSet<Integer> x, SortedSet<Integer> y) {
+			return Objects.equals( x, y );
+		}
+
+		@Override
+		public int hashCode(SortedSet<Integer> x) {
+			return Objects.hashCode( x );
+		}
+
+		@Override
+		public SortedSet<Integer> nullSafeGet(
+				ResultSet rs,
+				int position,
+				SharedSessionContractImplementor session,
+				Object owner) throws SQLException {
+			return convertToEntityAttribute( rs.getString( position ) );
+		}
+
+		@Override
+		public void nullSafeSet(
+				PreparedStatement st,
+				SortedSet<Integer> values,
+				int index,
+				SharedSessionContractImplementor session) throws SQLException {
+			if ( values == null || values.isEmpty() ) {
+				st.setNull( index, SqlTypes.VARCHAR );
+				return;
+			}
+
+			String databaseValue = convertToDatabaseColumn( values );
+
+			st.setString( index, databaseValue );
+		}
+
+		@Override
+		public SortedSet<Integer> deepCopy(SortedSet<Integer> value) {
+			return new TreeSet<>( value );
+		}
+
+		@Override
+		public boolean isMutable() {
+			return true;
+		}
+
+		@Override
+		public Serializable disassemble(SortedSet<Integer> value) {
+			return (Serializable) value;
+		}
+
+		@Override
+		public SortedSet<Integer> assemble(Serializable cached, Object owner) {
+			return (SortedSet<Integer>) cached;
+		}
+
+		@Override
+		public String convertToDatabaseColumn(SortedSet<Integer> values) {
+			return values.stream().map( Object::toString ).collect( Collectors.joining( "|", "|", "|" ) );
+		}
+
+		@Override
+		public SortedSet<Integer> convertToEntityAttribute(String databaseValue) {
+			return Arrays.stream( databaseValue.split( "\\|" ) )
+					.map( value -> value.trim() )
+					.filter( value -> !value.isEmpty() )
+					.map( value -> Integer.valueOf( value ) )
+					.collect( Collectors.toCollection( TreeSet::new ) );
+		}
+
+	}
+}