Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

Jackson custom JsonSerializer - conditionally call default serializer

What I want is to use default BeanSerializer conditionally for my class's objects:

class MyCustomSerializer extends StdSerializer<AbstractEntity> {

    public MyCustomSerializer() {
        super(AbstractEntity.class);
    }

    @Override
    public void serialize(AbstractEntity o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        if (someCondition()) {
           serializeNormalWay(); //how?
        } else {
           //custom serialization
        }
    }
}

I've tried to do something like that:

serializerProvider.defaultSerializeValue(o, jsonGenerator);

but this calls MyCustomSerializer's method and I have never-ending recursion. How can I get appropriate Serializer object, that I could use for ordinary bean Serialization?

like image 790
Mariusz Jaskółka Avatar asked Nov 01 '22 05:11

Mariusz Jaskółka


1 Answers

This requires bit more complicated setup: instead of directly overriding serializer to use, you need to let Jackson create one, then take over. This may be done by registering BeanSerializerModifier (via Module), method modifySerializer(...). You will be given default serializer that would be used, and you can construct custom one, passing that default one.

like image 69
StaxMan Avatar answered Nov 15 '22 06:11

StaxMan