Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/HYKFactory.java @ 2131:e50a928187cd
Added stubby hyk infrastructure.
flys-artifacts/trunk@3706 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
|---|---|
| date | Wed, 18 Jan 2012 13:39:16 +0000 |
| parents | |
| children | 04b6b6a4564d |
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| 2130:3cbdf1b77ea5 | 2131:e50a928187cd |
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| 1 package de.intevation.flys.artifacts.model; | |
| 2 | |
| 3 import java.util.ArrayList; | |
| 4 import java.util.List; | |
| 5 | |
| 6 import java.math.BigDecimal; | |
| 7 | |
| 8 import net.sf.ehcache.Cache; | |
| 9 import net.sf.ehcache.Element; | |
| 10 | |
| 11 import org.apache.log4j.Logger; | |
| 12 | |
| 13 import org.hibernate.Query; | |
| 14 import org.hibernate.Session; | |
| 15 | |
| 16 import de.intevation.flys.model.HYKFormation; | |
| 17 import de.intevation.flys.model.HYKFlowZone; | |
| 18 | |
| 19 import de.intevation.flys.artifacts.cache.CacheFactory; | |
| 20 | |
| 21 import de.intevation.flys.backend.SessionHolder; | |
| 22 | |
| 23 | |
| 24 /** | |
| 25 * Factory to access HYKs (hydrographic values). | |
| 26 */ | |
| 27 public class HYKFactory | |
| 28 { | |
| 29 private static Logger logger = Logger.getLogger(HYKFactory.class); | |
| 30 | |
| 31 public static String HYK_CACHE_NAME = "hykache"; | |
| 32 | |
| 33 | |
| 34 /** Do not instantiate a HYKFactory. */ | |
| 35 private HYKFactory() { | |
| 36 } | |
| 37 | |
| 38 | |
| 39 /** | |
| 40 * Get List of Zones for given river and km. | |
| 41 */ | |
| 42 public static Object getHYKs(int riverId, double km) { | |
| 43 logger.debug("HYKFactory.getHYKs"); | |
| 44 | |
| 45 Cache cache = CacheFactory.getCache(HYK_CACHE_NAME); | |
| 46 | |
| 47 String cacheKey; | |
| 48 | |
| 49 if (cache != null) { | |
| 50 cacheKey = "" + riverId + "_" + km; | |
| 51 Element element = cache.get(cacheKey); | |
| 52 if (element != null) { | |
| 53 logger.debug("Got hyk from cache"); | |
| 54 return (List<Zone>)element.getValue(); | |
| 55 } | |
| 56 } | |
| 57 else { | |
| 58 cacheKey = null; | |
| 59 } | |
| 60 | |
| 61 List<Zone> zones = getZonesUncached(riverId, km); | |
| 62 | |
| 63 if (zones != null && cacheKey != null) { | |
| 64 logger.debug("Store hykzones in cache."); | |
| 65 Element element = new Element(cacheKey, zones); | |
| 66 cache.put(element); | |
| 67 } | |
| 68 | |
| 69 return zones; | |
| 70 } | |
| 71 | |
| 72 | |
| 73 /** | |
| 74 * | |
| 75 * @param column the position columns value | |
| 76 * @param wst_id database id of the wst | |
| 77 * @return according WKms. | |
| 78 */ | |
| 79 public static List<Zone> getZonesUncached(int riverId, double km) { | |
| 80 | |
| 81 if (logger.isDebugEnabled()) { | |
| 82 logger.debug("HYKFactory.getZoneUncached " + riverId + " km " + km); | |
| 83 } | |
| 84 | |
| 85 Session session = SessionHolder.HOLDER.get(); | |
| 86 Query query = session.createQuery( | |
| 87 "from HYKFormation where entry.HYK.river.id = :riverid " + | |
| 88 " and entry.km between " + | |
| 89 ":km - cast(distance_vl/1000.0 - 0.001 as big_decimal) and " + | |
| 90 ":km + cast(distance_vl/1000.0 + 0.001 as big_decimal)"); | |
| 91 query.setParameter("riverid", riverId); | |
| 92 query.setParameter("km", new BigDecimal(km)); | |
| 93 logger.debug("Big km " + new BigDecimal(km)); | |
| 94 List<HYKFormation> forms = query.list(); | |
| 95 | |
| 96 List<Zone> zones = new ArrayList<Zone>(); | |
| 97 for (HYKFormation form : forms) { | |
| 98 logger.debug("One HYKFormation found (entry: " | |
| 99 + form.getEntry().getId() | |
| 100 + ") /km " + form.getEntry().getKm() + "."); | |
| 101 | |
| 102 // Create respective zones. | |
| 103 for (HYKFlowZone flowZone: form.getZones()) { | |
| 104 Zone z = new Zone(flowZone.getA().doubleValue(), | |
| 105 flowZone.getB().doubleValue(), | |
| 106 flowZone.getType().getName()); | |
| 107 zones.add(z); | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 return zones; | |
| 112 } | |
| 113 | |
| 114 /** Labelled section. */ | |
| 115 public static class Zone { | |
| 116 /** Lower end of segment. */ | |
| 117 protected double from; | |
| 118 /** Upper end of segment. */ | |
| 119 protected double to; | |
| 120 /** The label. */ | |
| 121 protected String name; | |
| 122 | |
| 123 /** Constructor for labelled section. */ | |
| 124 public Zone (double from, double to, String name) { | |
| 125 this.from = from; | |
| 126 this.to = to; | |
| 127 this.name = name; | |
| 128 } | |
| 129 | |
| 130 public double getFrom() { | |
| 131 return from; | |
| 132 } | |
| 133 | |
| 134 public String getName() { | |
| 135 return name; | |
| 136 } | |
| 137 } // public static class Zone | |
| 138 } | |
| 139 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |