Exception when trying to @JsonSerialized a nested polymorphic field annotated with @JsonTypeInfo

I have this field that is annotated as @StoredAsJson and it’s type is interface FilterValue. In FilterValue, I have @JsonTypeInfo and @JsonSubTypes configured properly, also having like classes StringValue and NumberValue implementing that interface.

The serialization works fine, but it’s failing to deserialize the values back from the database. When I try to fetch the object from the database with my DAO I get the following error:

com.fasterxml.jackson.databind.JsonMappingException: Unexpected token (VALUE_STRING), expected START_ARRAY: need JSON Array to contain As.WRAPPER_ARRAY type information for class io.github.rscarvalho.rosettatest.data.FilterValue
 at [Source: {"id":0,"name":"filter1","filterValue":"{\"@type\":\"StringValue\",\"value\":\"my value\"}"}; line: 1, column: 25] (through reference chain: io.github.rscarvalho.rosettatest.data.Filter["filterValue"])

I’ve set up a repository with a small test to reproduce the issue. You can see the original error message into the Travis build that failed the same way as my local tests.

[rscarvalho]

@ldriscoll when you configure use = JsonTypeInfo.Id.NAME on @JsonTypeInfo it does only records the simple class name.

From what I understand Jackson should be picking up which class to use based on the configured @JsonSubTypes

[jhaber]

Confirmed that this is fixed by 3.11.8, although some of the tests seemed to have logical errors. With this patch the tests pass:

diff --git a/pom.xml b/pom.xml
index dafc98a..d3eeb43 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
   <version>1.0-SNAPSHOT</version>
 
   <properties>
-    <rosetta.version>3.10.7</rosetta.version>
+    <rosetta.version>3.11.8</rosetta.version>
     <jdbi.version>2.73</jdbi.version>
     <jackson.version>2.5.4</jackson.version>
     <h2.version>1.4.191</h2.version>
diff --git a/src/test/java/io/github/rscarvalho/rosettatest/dao/FilterDaoTest.java b/src/test/java/io/github/rscarvalho/rosettatest/dao/FilterDaoTest.java
index 32ae0fe..28de220 100644
--- a/src/test/java/io/github/rscarvalho/rosettatest/dao/FilterDaoTest.java
+++ b/src/test/java/io/github/rscarvalho/rosettatest/dao/FilterDaoTest.java
@@ -18,7 +18,6 @@ import com.hubspot.rosetta.jdbi.RosettaObjectMapperOverride;
 import io.github.rscarvalho.rosettatest.JsonUtils;
 import io.github.rscarvalho.rosettatest.data.Filter;
 import io.github.rscarvalho.rosettatest.data.FilterValue;
-import io.github.rscarvalho.rosettatest.data.NumberValue;
 import io.github.rscarvalho.rosettatest.data.StringValue;
 
 public class FilterDaoTest {
@@ -99,7 +98,8 @@ public class FilterDaoTest {
     assertThat(actualFilter).isNotNull();
     assertThat(actualFilter.getId()).isEqualTo(id);
     assertThat(actualFilter.getName()).isEqualTo("filter1");
-    assertThat(actualFilter.getFilterValue()).isInstanceOf(NumberValue.class);
+    assertThat(actualFilter.getFilterValue()).isInstanceOf(StringValue.class);
+    assertThat(actualFilter.getFilterValue().getValue()).isEqualTo("my value");
   }
 
   @Test
@@ -119,7 +119,8 @@ public class FilterDaoTest {
     assertThat(actualFilter).isNotNull();
     assertThat(actualFilter.getId()).isEqualTo(id);
     assertThat(actualFilter.getName()).isEqualTo("filter1");
-    assertThat(actualFilter.getFilterValue()).isInstanceOf(NumberValue.class);
+    assertThat(actualFilter.getFilterValue()).isInstanceOf(StringValue.class);
+    assertThat(actualFilter.getFilterValue().getValue()).isEqualTo("my value");
   }
 
   @Test
@@ -140,6 +141,7 @@ public class FilterDaoTest {
     assertThat(actualFilter).isNotNull();
     assertThat(actualFilter.getId()).isEqualTo(id);
     assertThat(actualFilter.getName()).isEqualTo("filter1");
-    assertThat(actualFilter.getFilterValue()).isInstanceOf(NumberValue.class);
+    assertThat(actualFilter.getFilterValue()).isInstanceOf(StringValue.class);
+    assertThat(actualFilter.getFilterValue().getValue()).isEqualTo("my value");
   }
 }