com.mycompany.gsontesting.ItemArrayDeserialiser.java Source code

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Here is the source code for com.mycompany.gsontesting.ItemArrayDeserialiser.java

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/*
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package com.mycompany.gsontesting;

import java.lang.reflect.Type;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import java_packages.Items;

/**
 *
 * @author rory.crickmore
 */
public class ItemArrayDeserialiser implements JsonDeserializer<JsonItems> {
    /*
    Array deserialiser will put the items into an array and a seperate deserialiser will assign the correct fields.
    */

    //Override needed since it's an abstract method. This will parse the Json data into Json objects to then be converted 
    //into Java objects.
    @Override
    public JsonItems deserialize(final JsonElement json, final Type typeOfT,
            final JsonDeserializationContext context) throws JsonParseException {

        //Create generic Json object.
        final JsonObject jsonObject = json.getAsJsonObject();

        Items[] items = context.deserialize(jsonObject.get("Items"), Items[].class);
        final JsonItems arrObj = new JsonItems();

        arrObj.setJsonItems(items);
        /*
        Example on how to get a Json field that isn't an array. 
        final JsonElement jsonTitle = jsonObject.get("title");
        final String title = jsonTitle.getAsString();
        */

        /*Example of getting an array at root level.
        final JsonArray jsonAuthorsArray = jsonObject.get("authors").getAsJsonArray();
        final String[] authors = new String[jsonAuthorsArray.size()];
        for (int i = 0; i < authors.length; i++) {
          final JsonElement jsonAuthor = jsonAuthorsArray.get(i);
          authors[i] = jsonAuthor.getAsString();
        }
        */

        return arrObj;
    }
}