package com.tubeonfire.model;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.TreeMap;
import java.util.logging.Logger;
import javax.cache.Cache;
import javax.cache.CacheException;
import javax.cache.CacheManager;
import com.googlecode.objectify.Key;
import com.googlecode.objectify.Objectify;
import com.googlecode.objectify.ObjectifyOpts;
import com.googlecode.objectify.ObjectifyService;
import com.googlecode.objectify.Query;
import com.tubeonfire.entity.Channel;
public class ChannelModel {
private static final Logger log = Logger.getLogger(ChannelModel.class
.getName());
private static Objectify ofy;
private static Cache cache = null;
private static boolean isRegisted = false;
private static ObjectifyOpts opts = null;
private int limit = 12;
private static String cacheSide = "frontEnd_";
private static String cachePrefix = "channelModel_";
private static TreeMap<String, String> mapCacheKey = new TreeMap<String, String>();
private List<Channel> listResult = new ArrayList<Channel>();
public int getLimit() {
return limit;
}
public void setLimit(int limit) {
this.limit = limit;
}
public List<Channel> getListResult() {
return listResult;
}
public void setListResult(List<Channel> listResult) {
this.listResult = listResult;
}
public static void init() {
if (!isRegisted) {
isRegisted = true;
try {
ObjectifyService.register(Channel.class);
} catch (Exception e) {
isRegisted = false;
}
try {
cache = CacheManager.getInstance().getCacheFactory()
.createCache(Collections.emptyMap());
} catch (CacheException e) {
isRegisted = false;
}
opts = new ObjectifyOpts().setSessionCache(true);
}
ofy = ObjectifyService.begin(opts);
}
public ChannelModel() {
init();
}
@SuppressWarnings("unchecked")
public static Channel getById(String id) {
try {
init();
Channel obj = new Channel();
String prefix = cachePrefix + "id_" + id;
if (cache != null && cache.containsKey(prefix)) {
obj = (Channel) cache.get(prefix);
} else {
try {
obj = ofy.get(new Key<Channel>(Channel.class, id));
cache.put(prefix, obj);
} catch (Exception e) {
obj = null;
}
}
return obj;
} catch (Exception e) {
log.warning(e.toString());
e.printStackTrace();
return null;
}
}
@SuppressWarnings("unchecked")
public void prepareList() {
try {
listResult = new ArrayList<Channel>();
String prefix = cacheSide + cachePrefix + "list_" + limit;
mapCacheKey.put(prefix, prefix);
if (cache != null && cache.containsKey(prefix)) {
listResult = (ArrayList<Channel>) cache.get(prefix);
} else {
Query<Channel> q = ofy.query(Channel.class).limit(limit)
.order("-bumpPoint");
for (Channel channel : q) {
listResult.add(channel);
}
if (listResult.size() > 0) {
cache.put(prefix, listResult);
}
}
} catch (Exception e) {
log.warning(e.toString());
e.printStackTrace();
listResult = new ArrayList<Channel>();
}
}
public static void clearModelCache() {
init();
try {
if (mapCacheKey != null && mapCacheKey.size() > 0) {
for (String key : mapCacheKey.keySet()) {
cache.remove(key);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}