Dynamic property name for Jackson serialization

Question

I have a number of classes I'm trying to serialize to JSON. They're very similar, so I'm wondering if there's a better way to do this than creating 3 very-near-identical classes each time this pattern shows up:

public class SomethingFoo {
  @JsonProperty("foo")
  Identifier foo

  // other properties
}

public class SomethingBar {
  @JsonProperty("bar")
  Identifier bar

  // other properties
}

public class SomethingBaz {
  @JsonProperty("baz")
  Identifier baz

  // other properties
}

Identifier is a class that only contains one field:

public class Identifier {
  @JsonProperty("name")
  String name = "";
}

What I would like to do, is change Identifier to something like:

public class Identifier {
  @JsonProperty("name")
  String name = "";

  @JsonIgnore
  IdentifierType type;
}

public Enum IdentifierType {
  FOO, BAR, BAZ;
}

I would then like to use the 'type' field, within Identifier, to change the name of the Identifier field in the objects that contain those Identifiers.

I would then like to do replace SomethingFoo, SomethingBar, and SomethingBaz with this:

public class Something {
  @JsonProperty(??????)
  Identifier name

  // other properties
}

I would like the property name of Something.identifier to be "foo", "bar", or "baz", depending on the value of Identifier.type.

Alternatively, I could also sub-class Identifier, rather than use an Enum.

The problem is that I'm trying to use a value within an object (or the type of the object, if sub-classes are used) to inform the property name in the Identifier's containing class. So I don't know if what I want to do is even possible without changing every class that contains an Identifier.

Edit:

The problem is I want 'Something' to be Serialized as one of these (Based on Identifier's enum type (or subclass, if that's a better way to accomplish this)):

{
  "foo" : { 
     "name" : "blahblahblah"
  }
}

{
  "bar" : { 
     "name" : "blahblahblah"
  }
}

{
  "baz" : { 
     "name" : "blahblahblah"
  }
}

Answer 1

This can be done using JsonSerializer with your custom implementation. Please refer to below code.

 @JsonSerialize(using = Term.TermSerializer.class)
 public class Term {

//@JsonProperty("field")
private String field;

public Term() {

}

public Term(String field){
    this.field = field;
}

public String getField() {
    return field;
}

public void setField(String field) {
    this.field = field;
}

public static class TermSerializer extends JsonSerializer<Term> {
    @Override public void serialize(Term value, JsonGenerator jsonGenerator, SerializerProvider provider)
        throws IOException {
        jsonGenerator.writeStartObject();
        jsonGenerator.writeStringField("price", value.getField());// dynamic field name
        jsonGenerator.writeEndObject();
    }
}

public static void main(String[] args){
    Term term = new Term("color");
    ObjectMapper mapper = new ObjectMapper();
    mapper.enable(SerializationFeature.INDENT_OUTPUT);
    mapper.enable(SerializationFeature.WRAP_ROOT_VALUE);
    String jsonString = null;
    try {
        jsonString = mapper.writeValueAsString(term);
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    }
    System.out.println(jsonString);
}

}