I wanted to create a nested datastructure.
Entity1 contains Objects of type Entity2 stored in a Map. Entity2 should contain a Map of Objects of Entity3.
The first part, Entity1 and Entity works fine. When I add Entity3, an Exception occurs.
When I executed a simple test the following Exception occured:
java.lang.IllegalArgumentException: Target bean of type org.springframework.data.util.Pair is not of type of the persistent entity (org.hameister.filmwatcher.nested.Entity2)!:org.springframework.data.util.Pair
package org.hameister.nested;
import org.springframework.data.annotation.Id;
import java.util.HashMap;
import java.util.Map;
public class Entity1 {
@Id
long id;
String name1;
Map<String, Entity2> bMap = new HashMap<>();
public Entity1() {
}
public Entity1(String name1) {
this.name1 = name1;
}
public void setId(Long id) {
this.id = id;
}
public void addElement(Entity2 entity2) {
bMap.put(entity2.name2, entity2);
}
}
Entity2:
package org.hameister.nested;
import org.springframework.data.annotation.Id;
import java.util.HashMap;
import java.util.Map;
public class Entity2 {
@Id
long id;
String name2;
// Map<String,Entity3> map = new HashMap<>();
public Entity2() {
}
public Entity2(String name2) {
this.name2 = name2;
}
// public void addElement(Entity3 entity3) {
// map.put(entity3.name3, entity3);
// }
public void setId(Long id) {
this.id = id;
}
}
Entity3:
package org.hameister.nested;
import org.springframework.data.annotation.Id;
public class Entity3 {
@Id
long id;
String name3;
public Entity3(String name3) {
this.name3 = name3;
}
public void setId(Long id) {
this.id = id;
}
}
When I added another class Entity3 which should be stored in Entity2 in a Map, this didn't not work. When I executed a simple test the following Exception occurred:
java.lang.IllegalArgumentException: Target bean of type org.springframework.data.util.Pair is not of type of the persistent entity (org.hameister.filmwatcher.nested.Entity2)!: org.springframework.data.util.Pair
To reproduce the Exception simple remove the double slashes in the class Entity2. And the double slash in the test NestedTest.
Here is the test:
package org.hameister.nested;
import org.hameister.nested.Entity1;
import org.hameister.nested.Entity2;
import org.hameister.nested.Entity3;
import org.hameister.nested.Repository1;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.data.jdbc.DataJdbcTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@DataJdbcTest
public class NestedTest {
@Autowired
Repository1 repository1;
@Test
public void testA() {
Entity1 entity1 = new Entity1("Entity1");
Entity2 entity2 = new Entity2("Entity2");
Entity3 entity3 = new Entity3("Entity3");
entity1.addElement(entity2);
// entity2.addElement(entity3);
repository1.save(entity1);
}
}
The complete source code can be found here.
