Add a test involving nested record

Author: harawata

src/test/java/org/apache/ibatis/submitted/record_type/CreateDB.sql

@@ -23,3 +23,10 @@ create table prop (
 );
 
 insert into prop (id, val, url) values (1, 'Val1', 'https://www.google.com');
+
+create table item (
+  id int,
+  prop_id int
+);
+
+insert into item (id, prop_id) values (100, 1);

src/test/java/org/apache/ibatis/submitted/record_type/Item.java

@@ -0,0 +1,20 @@
+/**
+ *    Copyright 2009-2022 the original author or authors.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+package org.apache.ibatis.submitted.record_type;
+
+public record Item(Integer id, Property property) {
+}

src/test/java/org/apache/ibatis/submitted/record_type/RecordTypeMapper.java

@@ -17,13 +17,15 @@
 
 import org.apache.ibatis.annotations.Arg;
 import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Results;
 import org.apache.ibatis.annotations.Select;
 
 public interface RecordTypeMapper {
 
   @Select("select id, val, url from prop where id = #{id}")
   Property selectPropertyAutomapping(int id);
 
+  @Results(id = "propertyRM")
   @Arg(column = "id", javaType = int.class)
   @Arg(column = "val", javaType = String.class)
   @Arg(column = "url", javaType = String.class)
@@ -33,4 +35,12 @@ public interface RecordTypeMapper {
   @Insert("insert into prop (id, val, url) values (#{id}, #{value}, #{URL})")
   int insertProperty(Property property);
 
+  @Arg(id = true, column = "id", javaType = Integer.class)
+  @Arg(javaType = Property.class, resultMap = "propertyRM", columnPrefix = "p_")
+  @Select({
+    "select i.id, p.id p_id, p.val p_val, p.url p_url",
+    "from item i left join prop p on p.id = i.prop_id",
+    "where i.id = #{id}" })
+  Item selectItem(Integer id);
+
 }

src/test/java/org/apache/ibatis/submitted/record_type/RecordTypeTest.java

@@ -77,4 +77,13 @@ void testInsertRecord() {
     }
   }
 
+  @Test
+  void testSelectNestedRecord() {
+    try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
+      RecordTypeMapper mapper = sqlSession.getMapper(RecordTypeMapper.class);
+      Item item = mapper.selectItem(100);
+      assertEquals(Integer.valueOf(100), item.id());
+      assertEquals(new Property(1, "Val1", "https://www.google.com"), item.property());
+    }
+  }
 }