Is possible to use setters when Gson deserializes a JSON?

Question

Is there any way the set methods of a given class, are used when using Gson\'s fromJson method?

I would like to do this because for every String

Answer 1

I implemented a JsonDeserializer and registered it on GsonBuilder. So, to all String fields received, Gson will use my StringGsonTypeAdapter to deserialize the value.

Below is my code:

import static net.hugonardo.java.commons.text.StringUtils.normalizeSpace;
import static net.hugonardo.java.commons.text.StringUtils.trimToNull;

final class StringGsonTypeAdapter implements JsonDeserializer {

    private static final StringGsonTypeAdapter INSTANCE = new StringGsonTypeAdapter();

    static StringGsonTypeAdapter instance() {
        return INSTANCE;
    }

    @Override
    public String deserialize(JsonElement jsonElement, Type type, 
        JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
        return normalizeSpace(trimToNull(jsonElement.getAsString()));
    }
}

...and my GsonBuilder:

Gson gson = new GsonBuilder()
    .registerTypeAdapter(String.class, StringGsonTypeAdapter.instance())
    .create())