Technical Notes: Java/JSON Polymorphic Mapping Using Jackson

Technical Notes: Java/JSON Polymorphic Mapping Using Jackson

Jackson has a number of flexible ways to map Java objects to and from JSON. Some of them are as follows:

1. @JsonProperty to change the name of the property output to JSON
2. @JsonSerialize/@JsonDeserialize to change the type of the object or to provide custom serializer
3. @JsonIgnore to ignore properties
4. Mixins to control runtime annotations during serialization & deserialization

Here in this post, I focus on serialization and deserialization of polymorphic types using @JsonPropertyInfo to inject an extra property called type to distinguish between different object types.

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