Package org.gtugs.service

Source Code of org.gtugs.service.SimpleGuestManager

/*
* Copyright 2009 Google Inc.
*
* 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 org.gtugs.service;

import org.gtugs.domain.Guest;
import org.gtugs.repository.GuestDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import com.google.appengine.api.memcache.MemcacheService;
import com.google.appengine.api.memcache.MemcacheServiceFactory;

import java.util.Date;
import java.util.List;

/**
* @author jasonacooper@google.com (Jason Cooper)
*/
@Service("guestManager")
public class SimpleGuestManager implements GuestManager {

  private static final String GUESTS_MEMCACHE_KEY = "guests";

  @Autowired
  private GuestDao guestDao;

  public List<Guest> getGuests() {
    MemcacheService ms = MemcacheServiceFactory.getMemcacheService();

    if (!ms.contains(GUESTS_MEMCACHE_KEY)) {
      ms.put(GUESTS_MEMCACHE_KEY, guestDao.getGuests());
    }

    return (List<Guest>) ms.get(GUESTS_MEMCACHE_KEY);
  }

  public List<Guest> getGuests(Date createdAfter) {
    MemcacheService ms = MemcacheServiceFactory.getMemcacheService();

    if (!ms.contains(GUESTS_MEMCACHE_KEY)) {
      ms.put(GUESTS_MEMCACHE_KEY, guestDao.getGuests(createdAfter));
    }

    return (List<Guest>) ms.get(GUESTS_MEMCACHE_KEY);
  }

  public void storeGuest(Guest guest) {
    MemcacheService ms = MemcacheServiceFactory.getMemcacheService();

    guestDao.storeGuest(guest);

    ms.delete(GUESTS_MEMCACHE_KEY);
  }

  public void setGuestDao(GuestDao guestDao) {
    this.guestDao = guestDao;
  }
}
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