Package com.tubeonfire.model.admin

Source Code of com.tubeonfire.model.admin.AdvertisingModel

package com.tubeonfire.model.admin;

import java.util.Collections;
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.tubeonfire.entity.Advertising;

public class AdvertisingModel {

  private static final Logger log = Logger.getLogger(AdvertisingModel.class
      .getName());

  private static Objectify ofy;

  private static Cache cache = null;

  private static boolean isRegisted = false;

  private static ObjectifyOpts opts = null;

  private static String cachePrefix = "AdvertisingModel_";

  public static void init() {
    if (!isRegisted) {
      isRegisted = true;
      try {
        ObjectifyService.register(Advertising.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 AdvertisingModel() {
    init();
  }

  @SuppressWarnings("unchecked")
  public static void insert(Advertising obj) {
    init();
    if (cache != null) {
      String prefix = cachePrefix + "id_" + obj.getId();
      cache.put(prefix, obj);
      cache.put("frontEndAdvertisingModel_" + "id_" + obj.getId(), obj);
      System.out.println("Put Advertising to cache success !");
    }
    ofy.put(obj);
  }

  public static void delete(Advertising obj) {
    init();
    String prefix = cachePrefix + "id_" + obj.getId();
    if (cache != null && cache.containsKey(prefix)) {
      cache.remove(prefix);
      cache.remove("frontEndAdvertisingModel_" + "id_" + obj.getId());
      System.out.println("Remove ads from cache success !");
    }
    ofy.delete(obj);
  }

  @SuppressWarnings("unchecked")
  public static Advertising byId(String id, boolean fromCache) {
    init();
    Advertising obj = new Advertising();
    String prefix = cachePrefix + "id_" + id;
    if (cache != null && cache.containsKey(prefix) && fromCache) {
      obj = (Advertising) cache.get(prefix);
    } else {
      try {
        obj = ofy.get(new Key<Advertising>(Advertising.class, id));
        if (fromCache) {
          cache.put(prefix, obj);
        }
      } catch (Exception e) {
        obj = null;
      }
    }
    return obj;
  }

  @SuppressWarnings("unchecked")
  public static Advertising getByPlaceAndPosition(int place, int position) {
    try {
      init();
      Advertising obj = new Advertising();
      String prefix = cachePrefix + "id_" + "advertising_place_" + place
          + "_position_" + position;
      if (cache != null && cache.containsKey(prefix)) {
        obj = (Advertising) cache.get(prefix);
      } else {
        obj = ofy.query(Advertising.class).filter("position", position)
            .filter("place", place).get();
        if (obj != null) {
          cache.put(prefix, obj);
        }
      }
      return obj;
    } catch (Exception e) {
      log.warning(e.toString());
      e.printStackTrace();
      return null;
    }
  }
}
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