bytebus
Notebook on code & software design


Serializing and deserializing IDs and other value objects to Java records with Jackson

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There are many good reasons to model IDs as value objects. Since Java 16 Records it is very easy to use value objects, but how do you (de-)serialize JSON to these records with Jackson?

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonValue;

record MyId(String value) {

    @JsonCreator(mode = JsonCreator.Mode.DELEGATING)
    public MyId {}

    @JsonValue
    public String value() {
        return value;
    }

}