lh.api.showcase.client.operations.flightstatus.FlightStatusResponseJsonParser.java Source code

Introduction

Here is the source code for lh.api.showcase.client.operations.flightstatus.FlightStatusResponseJsonParser.java

Source

/*
 * Copyright 2015 Loic Merckel
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package lh.api.showcase.client.operations.flightstatus;

import java.util.ArrayList;
import java.util.List;

import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONParser;
import com.google.gwt.json.client.JSONValue;

import lh.api.showcase.client.JsonParser;
import lh.api.showcase.client.operations.Flight;
import lh.api.showcase.client.operations.JsonParserFlightUtils;

public class FlightStatusResponseJsonParser implements JsonParser<List<FlightStatusImpl>> {

    @Override
    public List<FlightStatusImpl> parse(String json) {

        // the list should contains only one element
        List<FlightStatusImpl> ret = new ArrayList<FlightStatusImpl>();

        JSONValue jsv = JSONParser.parseStrict(json);
        JSONObject jobj = jsv.isObject();

        JSONValue jsFlightResourceVal = jobj.get("FlightStatusResource");
        JSONObject jsFlightResourceObj = jsFlightResourceVal.isObject();

        JSONValue jsFlightsVal = jsFlightResourceObj.get("Flights");
        JSONObject jsFlightsObj = jsFlightsVal.isObject();

        JSONValue jsFlightVal = jsFlightsObj.get("Flight");
        JSONObject jsFlightObj = jsFlightVal.isObject();

        if (jsFlightObj == null) {
            JSONArray jarrayFlights = jsFlightVal.isArray();
            if (jarrayFlights != null) {
                for (int i = 0; i < jarrayFlights.size(); ++i) {
                    JSONObject jsFlightObject = jarrayFlights.get(i).isObject();
                    if (jsFlightObject == null) {
                        continue;
                    }
                    Flight flight = getFlightStatusInfo(jsFlightObject);
                    if (flight != null) {
                        ret.add(new FlightStatusImpl(flight));
                    }
                }
            }
        } else {
            Flight flight = getFlightStatusInfo(jsFlightObj);
            if (flight != null) {
                ret.add(new FlightStatusImpl(flight));
            }
        }
        return ret;
    }

    private Flight getFlightStatusInfo(JSONObject jsFlightObject) {
        if (jsFlightObject == null) {
            return null;
        }
        return JsonParserFlightUtils.getFlightInfo(jsFlightObject);
    }
}