Java tutorial
/* * Copyright 2012 the original author or authors. * * 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 com.springsource.greenhouse.events.load; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.inject.Inject; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Service; import org.springframework.web.client.RestTemplate; @Service public class NFJSLoader { private static final Logger logger = LoggerFactory.getLogger(NFJSLoader.class); private final RestTemplate restTemplate; private final EventLoaderRepository loaderRepository; private final Map<Long, Long> timeSlotIdMap; private final Map<Long, Long> leaderIdMap; private final Map<Long, Long> topicSlotMap; @Inject public NFJSLoader(EventLoaderRepository loaderRepository) { this.loaderRepository = loaderRepository; this.restTemplate = new RestTemplate(); this.timeSlotIdMap = new HashMap<Long, Long>(); this.leaderIdMap = new HashMap<Long, Long>(); this.topicSlotMap = new HashMap<Long, Long>(); } public void loadEventData(int showId) { @SuppressWarnings("unchecked") Map<String, Object> eventMap = (Map<String, Object>) restTemplate .getForObject("https://springone2gx.com/m/data/show_short.json?showId={showId}", Map.class, showId); long sourceId = (Integer) eventMap.get("id"); String name = (String) eventMap.get("name"); String firstDay = (String) eventMap.get("firstDay"); String lastDay = (String) eventMap.get("lastDay"); String abbreviation = (String) eventMap.get("abreviation"); // yes, that's correct @SuppressWarnings("unchecked") Map<String, Object> locationMap = (Map<String, Object>) eventMap.get("location"); String timeZone = (String) locationMap.get("timeZoneName"); int utcOffset = (Integer) locationMap.get("utcOffset"); String locationAddress = locationMap.get("address1") + " " + locationMap.get("address2") + " " + locationMap.get("city") + ", " + locationMap.get("stateCode") + " " + locationMap.get("zip"); long eventId = loaderRepository.loadEvent( new EventData(MEMBER_GROUP_ID, name, null, abbreviation, firstDay, lastDay, timeZone, PROVIDER_ID, sourceId), new VenueData((String) locationMap.get("description"), (String) locationAddress, (Double) locationMap.get("latitude"), (Double) locationMap.get("longitude"), (String) locationMap.get("metroArea"))); loadTimeSlotData(showId, eventId, utcOffset); loadLeaderData(showId); loadEventSessionData(showId, eventId, abbreviation); } private void loadLeaderData(int showId) { @SuppressWarnings("unchecked") List<Map<String, Object>> leaderMapList = (List<Map<String, Object>>) restTemplate.getForObject( "https://springone2gx.com/m/data/show_speakers.json?showId={showId}", List.class, showId); for (Map<String, Object> leaderMap : leaderMapList) { long sourceId = (Integer) leaderMap.get("id"); String name = (String) leaderMap.get("name"); String bio = (String) leaderMap.get("bio"); String personalUrl = (String) leaderMap.get("blogLink"); String twitterId = (String) leaderMap.get("twitterId"); LeaderData leaderData = new LeaderData(name, bio, personalUrl, twitterId, PROVIDER_ID, sourceId); long leaderId = loaderRepository.loadLeader(leaderData); leaderIdMap.put(sourceId, leaderId); } } @SuppressWarnings("unchecked") private void loadTimeSlotData(int showId, long eventId, int utcOffset) { List<Map<String, Object>> dayMapList = (List<Map<String, Object>>) restTemplate.getForObject( "https://springone2gx.com/m/data/show_schedule.json?showId={showId}", List.class, showId); for (Map<String, Object> dayMap : dayMapList) { List<Map<String, Object>> slotMapList = (List<Map<String, Object>>) dayMap.get("slots"); for (Map<String, Object> slotMap : slotMapList) { long sourceId = (Integer) slotMap.get("id"); String label = (String) slotMap.get("label"); String startTime = (String) slotMap.get("startTime"); String endTime = (String) slotMap.get("endTime"); TimeSlotData timeSlotData = new TimeSlotData(eventId, label, startTime, endTime, PROVIDER_ID, sourceId); long timeSlotId = loaderRepository.loadTimeSlot(timeSlotData); timeSlotIdMap.put(sourceId, timeSlotId); List<Map<String, Object>> presentations = (List<Map<String, Object>>) slotMap.get("presentations"); for (Map<String, Object> presentation : presentations) { if (presentation.get("topicId") != null && presentation.get("slotId") != null) { long topicId = (Integer) presentation.get("topicId"); long slotId = (Integer) presentation.get("slotId"); topicSlotMap.put(topicId, slotId); } } } } } @SuppressWarnings("unchecked") private void loadEventSessionData(int showId, long event, String abbreviation) { List<Map<String, Object>> topicMapList = (List<Map<String, Object>>) restTemplate.getForObject( "https://springone2gx.com/m/data/show_topics.json?showId={showId}", List.class, showId); for (Map<String, Object> topicMap : topicMapList) { long sourceId = (Integer) topicMap.get("id"); String title = (String) topicMap.get("title"); String description = (String) topicMap.get("summary"); String hashtag = "#" + abbreviation + sourceId; Long venue = null; // TODO: Figure out how to get this from event Long sourceTimeslot = topicSlotMap.get(sourceId); Long timeslot = timeSlotIdMap.get(sourceTimeslot); List<Integer> speakerIds = (List<Integer>) topicMap.get("speakerIds"); List<Long> leaderIds = new ArrayList<Long>(); for (Integer speakerId : speakerIds) { Long leaderId = leaderIdMap.get(speakerId.longValue()); if (leaderId != null) { leaderIds.add(leaderId); } else { logger.warn("Unknown speaker ID " + speakerId + ". Not in show_speakers.json feed."); } } EventSessionData eventSessionData = new EventSessionData(event, -1, title, description, hashtag, venue, timeslot, PROVIDER_ID, sourceId, leaderIds); loaderRepository.loadEventSession(eventSessionData); } } // expose getter so that we can use Spring Test MVC to mock NFJS server public RestTemplate getRestTemplate() { return restTemplate; } private static final String PROVIDER_ID = "NFJS"; private static final long MEMBER_GROUP_ID = 1; }