br.com.bean.Utilitarios.CollectionDeserializer.java Source code

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Here is the source code for br.com.bean.Utilitarios.CollectionDeserializer.java

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package br.com.bean.Utilitarios;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;

public class CollectionDeserializer implements JsonDeserializer<Collection<?>> {

    @Override
    public Collection<?> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        Type realType = ((ParameterizedType) typeOfT).getActualTypeArguments()[0];

        return parseAsArrayList(json, realType);
    }

    /**
     * @param serializedData
     * @param type
     * @return
     */
    @SuppressWarnings("unchecked")
    public <T> ArrayList<T> parseAsArrayList(JsonElement json, T type) {
        ArrayList<T> newArray = new ArrayList<T>();
        Gson gson = new Gson();

        JsonArray array = json.getAsJsonArray();
        Iterator<JsonElement> iterator = array.iterator();

        while (iterator.hasNext()) {
            JsonElement json2 = (JsonElement) iterator.next();
            T object = (T) gson.fromJson(json2, (Class<?>) type);
            newArray.add(object);
        }

        return newArray;
    }

}