uk.ac.horizon.aestheticodes.controllers.MarkerMapAdapter.java Source code

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Here is the source code for uk.ac.horizon.aestheticodes.controllers.MarkerMapAdapter.java

Source

/*
 * Aestheticodes recognises a different marker scheme that allows the
 * creation of aesthetically pleasing, even beautiful, codes.
 * Copyright (C) 2014  Aestheticodes
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Affero General Public License as published
 *     by the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Affero General Public License for more details.
 *
 *     You should have received a copy of the GNU Affero General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package uk.ac.horizon.aestheticodes.controllers;

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;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import uk.ac.horizon.aestheticodes.model.Marker;

import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

public class MarkerMapAdapter
        implements JsonDeserializer<Map<String, Marker>>, JsonSerializer<Map<String, Marker>> {
    @Override
    public Map<String, Marker> deserialize(JsonElement json, Type unused, JsonDeserializationContext context)
            throws JsonParseException {
        if (!json.isJsonArray()) {
            throw new JsonParseException("Unexpected type: " + json.getClass().getSimpleName());
        }

        Map<String, Marker> result = new HashMap<String, Marker>();
        JsonArray array = json.getAsJsonArray();
        for (JsonElement element : array) {
            if (element.isJsonObject()) {
                Marker marker = context.deserialize(element, Marker.class);
                result.put(marker.getCode(), marker);
            } else {
                throw new JsonParseException("some meaningful message");
            }
        }
        return result;
    }

    @Override
    public JsonElement serialize(Map<String, Marker> src, Type typeOfSrc, JsonSerializationContext context) {
        final JsonArray array = new JsonArray();
        for (Marker marker : src.values()) {
            array.add(context.serialize(marker));
        }
        return array;
    }
}