Hi Jackson-Users,
I have a problem after updating to Jackson 2.10. on 2.9 everythings works
fine.
This is a tiny Test that reproduce the problem.
We have a class with a generic parameter that has to be an enum.
@JsonTypeInfo(
use = JsonTypeInfo.Id.MINIMAL_CLASS,
include = JsonTypeInfo.As.PROPERTY,
property = "@class"
)
public class EnumContaintingClass <ENUM_TYPE extends Enum<ENUM_TYPE>> {
private ENUM_TYPE selected;
private List<ENUM_TYPE> options;
public EnumContaintingClass(){
}
public EnumContaintingClass(ENUM_TYPE selected, Class<ENUM_TYPE> cls) {
this.selected = selected;
readOptionsFromEnum(cls);
}
private void readOptionsFromEnum(Class < ENUM_TYPE > enumClass) {
ENUM_TYPE[] enumConstants = enumClass.getEnumConstants();
options = Arrays.asList(enumConstants);
}
//getter and setters here
}
And a Test trying to serialize and deserialize an entity of this class:
public class JacksonTestCase {
public enum TestEnum { FIRST, SECOND, THIRD; }
@Test
public void serialize() throws IOException {
EnumContaintingClass gui = new EnumContaintingClass(TestEnum.SECOND,
TestEnum.class);
ObjectMapper mapper = new ObjectMapper();
String str = mapper.writer().writeValueAsString(gui);
Object o = mapper.readerFor(EnumContaintingClass.class).readValue(str);
Assert.assertNotNull(o);
}
}
With Jackson 2.9.10 this works fine but after a update to 2.10 this fails
on deserializing with the Message:
"Cannot deserialize Class java.lang.Enum (of type enum) as a Bean"
I tried adding the TypeInfos also to the members but that doesn't helped.
When I change <ENUM_TYPE extends Enum<ENUM_TYPE>> to <ENUM_TYPE>.
Everything is fine, but then I can not ensure that only Enums are used for
this generic parameter (to show this i added the readOptionsFromEnum-Method
).
Hope you can help me get this working with Jackson 2.10.
Kind regards
Tim
P.S. hope I didn't post twice, but I can not find my first attempt to post
this :-/
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