lh.api.showcase.client.referencedata.airlines.AirlinesResponseJsonParser.java Source code

Introduction

Here is the source code for lh.api.showcase.client.referencedata.airlines.AirlinesResponseJsonParser.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.referencedata.airlines;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

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.JSONString;
import com.google.gwt.json.client.JSONValue;

import lh.api.showcase.client.JsonParser;
import lh.api.showcase.client.JsonParserUtils;

public class AirlinesResponseJsonParser implements JsonParser<List<Airline>> {

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

        List<Airline> ret = new ArrayList<Airline>();

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

        JSONValue jsAirlineResourceVal = jobj.get("AirlineResource");
        JSONObject jsAirlineResourceObj = jsAirlineResourceVal.isObject();

        JSONValue jsAirlinesVal = jsAirlineResourceObj.get("Airlines");
        JSONObject jsAirlinesObj = jsAirlinesVal.isObject();

        JSONValue jsAirlineVal = jsAirlinesObj.get("Airline");
        JSONObject jsAirlineObj = jsAirlineVal.isObject();

        if (jsAirlineObj == null) {
            JSONArray jarrayAirlines = jsAirlineVal.isArray();
            if (jarrayAirlines != null) {
                for (int i = 0; i < jarrayAirlines.size(); ++i) {
                    JSONObject jsAirlineObject = jarrayAirlines.get(i).isObject();
                    if (jsAirlineObject == null) {
                        continue;
                    }
                    Airline airline = getAirlineInfo(jsAirlineObject);
                    if (airline != null) {
                        ret.add(airline);
                    }
                }
            }
        } else {
            Airline airline = getAirlineInfo(jsAirlineObj);
            if (airline != null) {
                ret.add(airline);
            }
        }
        return ret;
    }

    private Airline getAirlineInfo(JSONObject jsAirlineObj) {

        JSONValue jsAirlineIdVal = jsAirlineObj.get("AirlineID");
        JSONValue jsAirlineIdIcaoVal = jsAirlineObj.get("AirlineID_ICAO");

        if (jsAirlineIdVal == null || jsAirlineIdIcaoVal == null) {
            return null;
        }
        JSONString jsAirlineIdStr = jsAirlineIdVal.isString();
        JSONString jsAirlineIdIcaoStr = jsAirlineIdIcaoVal.isString();

        JSONObject jsNamesObj = jsAirlineObj.get("Names").isObject();

        JSONValue jsOtherIdsVal = jsAirlineObj.get("OtherIDs");
        JSONObject jsOtherIdsObj = null;
        if (jsOtherIdsVal != null) {
            jsOtherIdsObj = jsOtherIdsVal.isObject();
        }

        return new Airline((jsAirlineIdStr == null) ? ("") : (jsAirlineIdStr.toString().replace("\"", "")),
                (jsAirlineIdIcaoStr == null) ? ("") : (jsAirlineIdIcaoStr.toString().replace("\"", "")),
                getOtherIDsInfo(jsOtherIdsObj), JsonParserUtils.getNamesMap(jsNamesObj));

    }

    public Set<String> getOtherIDsInfo(JSONObject jsOtherIdsObj) {

        if (jsOtherIdsObj == null) {
            return null;
        }
        Set<String> res = new HashSet<String>();

        JSONValue jsOtherIdVal = jsOtherIdsObj.get("OtherID");
        JSONObject jsOtherIdObj = jsOtherIdVal.isObject();

        if (jsOtherIdObj == null) {

            JSONArray jsOtherIdArray = jsOtherIdVal.isArray();
            if (jsOtherIdArray != null) {
                for (int i = 0; i < jsOtherIdArray.size(); ++i) {

                    JSONObject jsTmpOtherIdObj = jsOtherIdArray.get(i).isObject();
                    if (jsTmpOtherIdObj == null) {
                        continue;
                    }
                    String oid = getOtherIDInfo(jsTmpOtherIdObj);
                    if (oid != null) {
                        res.add(oid);
                    }
                }
            }
        } else {
            String oid = getOtherIDInfo(jsOtherIdObj);
            if (oid != null) {
                res.add(oid);
            }
        }
        return res;
    }

    public String getOtherIDInfo(JSONObject jsOtherIdObj) {
        JSONValue jsDescriptionVal = jsOtherIdObj.get("@Description");

        @SuppressWarnings("unused")
        JSONString jsDescriptionStr = jsDescriptionVal.isString();

        JSONValue jsNameVal = jsOtherIdObj.get("$");
        JSONString jsNameStr = jsNameVal.isString();

        return (jsNameStr == null) ? (null) : (jsNameStr.toString().replace("\"", ""));
    }
}