de.stadtrallye.rallyesoft.util.JSONConverter.java Source code

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Here is the source code for de.stadtrallye.rallyesoft.util.JSONConverter.java

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/*
 * Copyright (c) 2014 Jakob Wenzel, Ramon Wirsch.
 *
 * This file is part of RallyeSoft.
 *
 * RallyeSoft is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * RallyeSoft 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with RallyeSoft. If not, see <http://www.gnu.org/licenses/>.
 */

package de.stadtrallye.rallyesoft.util;

import android.util.Log;

import org.json.JSONException;
import org.json.JSONObject;

/**
 * Special IConverter to convert already interpreted JSONObject's to T
 * @author Ramon
 *
 * @param <T> Target type
 */
public abstract class JSONConverter<T> implements IConverter<JSONObject, T> {

    @SuppressWarnings("SameReturnValue")
    public T fallback() {
        return null;
    }

    @Override
    public T convert(JSONObject input) {
        try {
            return doConvert(input);
        } catch (JSONException e) {
            Log.w("JSONConverter", "falling back, conversion failed", e);
            return fallback();
        }
    }

    public abstract T doConvert(JSONObject o) throws JSONException;
}