Java tutorial
/* * Copyright (C) 2013 Stichting Akvo (Akvo Foundation) * * This file is part of Akvo FLOW. * * Akvo FLOW is free software: you can redistribute it and modify it under the terms of * the GNU Affero General Public License (AGPL) as published by the Free Software Foundation, * either version 3 of the License or any later version. * * Akvo FLOW 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 included below for more details. * * The full license text can also be seen at <http://www.gnu.org/licenses/agpl.html>. */ package org.akvo.flow.api.parser.json; import java.util.ArrayList; import java.util.List; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import org.akvo.flow.domain.QuestionResponse; import org.akvo.flow.domain.SurveyInstance; public class SurveyInstanceParser { public SurveyInstance parse(JSONObject jSurveyInstance) throws JSONException { String uuid = jSurveyInstance.getString(Attrs.UUID); String surveyId = jSurveyInstance.getString(Attrs.SURVEY_ID); long date = jSurveyInstance.getLong(Attrs.DATE); JSONArray jQuestionResponses = jSurveyInstance.getJSONArray(Attrs.QUESTION_RESPONSE_LIST); List<QuestionResponse> responses = new QuestionResponseParser().parseList(jQuestionResponses); return new SurveyInstance(uuid, surveyId, date, responses); } public List<SurveyInstance> parseList(JSONArray jSurveyInstances) throws JSONException { List<SurveyInstance> surveyInstances = new ArrayList<SurveyInstance>(); for (int i = 0; i < jSurveyInstances.length(); i++) { JSONObject jSurveyInstance = jSurveyInstances.getJSONObject(i); SurveyInstance surveyInstance = parse(jSurveyInstance); if (surveyInstance != null) { surveyInstances.add(surveyInstance); } } return surveyInstances; } interface Attrs { String UUID = "uuid"; String DATE = "collectionDate"; String SURVEY_ID = "surveyId"; String QUESTION_RESPONSE_LIST = "qasList"; } }