| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveboard.util; |
| 16 | |
| 17 | import org.apache.commons.logging.Log; |
| 18 | import org.apache.commons.logging.LogFactory; |
| 19 | |
| 20 | import net.sf.ehcache.Cache; |
| 21 | import net.sf.ehcache.CacheException; |
| 22 | import net.sf.ehcache.Element; |
| 23 | |
| 24 | public class ImageCache |
| 25 | { |
| 26 | static private final Log _logger = LogFactory.getLog(ImageCache.class); |
| 27 | |
| 28 | public ImageCache(Cache cache, int id) |
| 29 | { |
| 30 | _cache = cache; |
| 31 | _id = id; |
| 32 | } |
| 33 | |
| 34 | synchronized public void removeCache() |
| 35 | { |
| 36 | _cache.remove(_id); |
| 37 | } |
| 38 | |
| 39 | synchronized public void writeCache(ImageHolder image) |
| 40 | { |
| 41 | _cache.put(new Element(_id, image)); |
| 42 | } |
| 43 | |
| 44 | synchronized public ImageHolder readCache() |
| 45 | { |
| 46 | try |
| 47 | { |
| 48 | Element item = _cache.get(_id); |
| 49 | if (item == null) |
| 50 | { |
| 51 | return null; |
| 52 | } |
| 53 | return (ImageHolder) item.getValue(); |
| 54 | } |
| 55 | catch (CacheException e) |
| 56 | { |
| 57 | _logger.error("readCache() id " + _id, e); |
| 58 | return null; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | private final Cache _cache; |
| 63 | private final int _id; |
| 64 | } |