3

Есть абстрактный класс

@TypeAlias("DependencyParams")
public abstract class DependencyParams implements Cloneable {
    ...
}

У которого есть наследники

@TypeAlias("SimpleDependencyParams")
public class SimpleDependencyParams extends DependencyParams {
    ...
}

И класс, который хранит в себе поле с абстрактным типом

@Document(collection="devices")
@TypeAlias(value="Device")
@JsonTypeName("Device")
public class Device extends BasicEntity implements Cloneable {
    private DependencyType dependencyType = DependencyType.SIMPLE;

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXTERNAL_PROPERTY, property = "dependencyType", visible = true)
@JsonSubTypes({
    @JsonSubTypes.Type(value = DependencyParams.class),
    @JsonSubTypes.Type(value = SimpleDependencyParams.class, name = "SIMPLE")
})
private DependencyParams dependencyParams = new SimpleDependencyParams();



}

При доставании из БД объектов у меня происходит ошибка:

org.springframework.data.mapping.model.MappingInstantiationException: Failed to instantiate ....DependencyParams using constructor public ....DependencyParams() with arguments 
    at org.springframework.data.mapping.model.ClassGeneratingEntityInstantiator$MappingInstantiationExceptionEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:321) ~[spring-data-commons-2.5.6.jar:2.5.6]
...
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [....DependencyParams]: Class is abstract

Это произошло после обновления spring data с 2.0.14.RELEASE до 3.2.6

0 Answers0