Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FixingsOverviewFactory.java @ 2561:b3f6d49cdc80
Service to generate the data needed to build the "Fixerungen pro Fluss Uebersicht"
flys-artifacts/trunk@4087 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Sun, 19 Feb 2012 17:14:39 +0000 |
| parents | |
| children | 8bc1e1cb7f7b |
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| 2560:0d8c97374dc9 | 2561:b3f6d49cdc80 |
|---|---|
| 1 package de.intevation.flys.artifacts.model; | |
| 2 | |
| 3 import de.intevation.flys.artifacts.cache.CacheFactory; | |
| 4 | |
| 5 import de.intevation.flys.backend.SessionHolder; | |
| 6 | |
| 7 import net.sf.ehcache.Cache; | |
| 8 import net.sf.ehcache.Element; | |
| 9 | |
| 10 import org.apache.log4j.Logger; | |
| 11 | |
| 12 import org.hibernate.Session; | |
| 13 | |
| 14 public class FixingsOverviewFactory | |
| 15 { | |
| 16 private static Logger log = Logger.getLogger(FixingsOverviewFactory.class); | |
| 17 | |
| 18 public static final String CACHE_NAME = "fixings-overviews"; | |
| 19 | |
| 20 private FixingsOverviewFactory() { | |
| 21 } | |
| 22 | |
| 23 | |
| 24 public static FixingsOverview getOverview(String river) { | |
| 25 | |
| 26 log.debug("Looking for fixings overview for river '" + river + "'"); | |
| 27 | |
| 28 Cache cache = CacheFactory.getCache(CACHE_NAME); | |
| 29 | |
| 30 if (cache == null) { | |
| 31 return getUncached(river); | |
| 32 } | |
| 33 | |
| 34 String key = "fix-over-" + river; | |
| 35 | |
| 36 Element element = cache.get(key); | |
| 37 | |
| 38 if (element != null) { | |
| 39 return (FixingsOverview)element.getValue(); | |
| 40 } | |
| 41 | |
| 42 FixingsOverview overview = getUncached(river); | |
| 43 | |
| 44 if (overview != null) { | |
| 45 element = new Element(key, overview); | |
| 46 cache.put(element); | |
| 47 } | |
| 48 | |
| 49 return overview; | |
| 50 } | |
| 51 | |
| 52 public static FixingsOverview getUncached(String river) { | |
| 53 FixingsOverview overview = new FixingsOverview(river); | |
| 54 | |
| 55 Session session = SessionHolder.HOLDER.get(); | |
| 56 | |
| 57 return overview.load(session) ? overview : null; | |
| 58 } | |
| 59 } | |
| 60 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |