Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/SQOverviewFactory.java @ 3274:43e42315ce22
Added service for an overview chart of measuring points in sq relation.
flys-artifacts/trunk@4918 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Raimund Renkert <raimund.renkert@intevation.de> |
|---|---|
| date | Tue, 10 Jul 2012 16:37:48 +0000 |
| parents | |
| children | 30f157c7e466 |
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| 3273:739aa90eb79e | 3274:43e42315ce22 |
|---|---|
| 1 package de.intevation.flys.artifacts.model; | |
| 2 | |
| 3 import de.intevation.flys.artifacts.cache.CacheFactory; | |
| 4 | |
| 5 import de.intevation.flys.backend.SedDBSessionHolder; | |
| 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 SQOverviewFactory { | |
| 15 private static Logger log = Logger.getLogger(SQOverviewFactory.class); | |
| 16 | |
| 17 public static final String CACHE_NAME = "sq-overviews"; | |
| 18 | |
| 19 private SQOverviewFactory() { | |
| 20 } | |
| 21 | |
| 22 | |
| 23 public static SQOverview getOverview(String river) { | |
| 24 | |
| 25 boolean debug = log.isDebugEnabled(); | |
| 26 | |
| 27 if (debug) { | |
| 28 log.debug( | |
| 29 "Looking for sq overview for river '" + river + "'"); | |
| 30 } | |
| 31 | |
| 32 Cache cache = CacheFactory.getCache(CACHE_NAME); | |
| 33 | |
| 34 if (cache == null) { | |
| 35 if (debug) { | |
| 36 log.debug("Cache not configured."); | |
| 37 } | |
| 38 return getUncached(river); | |
| 39 } | |
| 40 | |
| 41 String key = "sq-over-" + river; | |
| 42 | |
| 43 Element element = cache.get(key); | |
| 44 | |
| 45 if (element != null) { | |
| 46 if (debug) { | |
| 47 log.debug("Overview found in cache"); | |
| 48 } | |
| 49 return (SQOverview)element.getValue(); | |
| 50 } | |
| 51 | |
| 52 SQOverview overview = getUncached(river); | |
| 53 | |
| 54 if (overview != null) { | |
| 55 if (debug) { | |
| 56 log.debug("Store overview in cache."); | |
| 57 } | |
| 58 cache.put(new Element(key, overview)); | |
| 59 } | |
| 60 | |
| 61 return overview; | |
| 62 } | |
| 63 | |
| 64 public static SQOverview getUncached(String river) { | |
| 65 SQOverview overview = new SQOverview(river); | |
| 66 | |
| 67 Session session = SedDBSessionHolder.HOLDER.get(); | |
| 68 | |
| 69 return overview.load(session) ? overview : null; | |
| 70 } | |
| 71 } |