Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/HYKFactory.java @ 5831:bd047b71ab37

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Repaired internal references
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 25 Apr 2013 12:06:39 +0200
parents flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/HYKFactory.java@c27c4e06dd87
children
rev   line source
5831
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1 package org.dive4elements.river.artifacts.model;
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2
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3 import org.dive4elements.river.artifacts.cache.CacheFactory;
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4 import org.dive4elements.river.backend.SessionHolder;
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5 import org.dive4elements.river.model.HYK;
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6 import org.dive4elements.river.model.HYKFlowZone;
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7 import org.dive4elements.river.model.HYKFormation;
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8
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9 import java.io.Serializable;
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10 import java.util.ArrayList;
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11 import java.util.List;
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12
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13 import net.sf.ehcache.Cache;
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14 import net.sf.ehcache.Element;
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15
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16 import org.apache.log4j.Logger;
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17 import org.hibernate.Query;
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18 import org.hibernate.SQLQuery;
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19 import org.hibernate.Session;
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20 import org.hibernate.type.StandardBasicTypes;
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21
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22
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23 /**
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24 * Factory to access HYKs (hydrographic values).
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25 */
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26 public class HYKFactory
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27 {
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28 private static Logger logger = Logger.getLogger(HYKFactory.class);
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29
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30 public static String HYK_CACHE_NAME = "hykache";
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31
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32
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33 /** Do not instantiate a HYKFactory. */
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34 private HYKFactory() {
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35 }
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36
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37
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38 /**
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39 * Get List of Zones for given river and km.
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40 */
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41 public static Object getHYKs(int hykid, double km) {
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42 logger.debug("HYKFactory.getHYKs");
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43
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44 Cache cache = CacheFactory.getCache(HYK_CACHE_NAME);
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45
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46 String cacheKey;
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47
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48 if (cache != null) {
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49 cacheKey = "" + hykid + "_" + km;
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50 Element element = cache.get(cacheKey);
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51 if (element != null) {
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52 logger.debug("Got hyk from cache");
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53 return element.getValue();
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54 }
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55 }
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56 else {
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57 cacheKey = null;
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58 }
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59
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60 List<Zone> zones = getZonesUncached(hykid, km);
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61
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62 if (zones != null && cacheKey != null) {
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63 logger.debug("Store hykzones in cache.");
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64 Element element = new Element(cacheKey, zones);
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65 cache.put(element);
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66 }
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67
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68 return zones;
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69 }
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70
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71
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72 /** Return name for hyk with given id. */
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73 public static String getHykName(int hykid) {
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74 logger.debug("HYKFactory.getHykName " + hykid);
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75
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76 Session session = SessionHolder.HOLDER.get();
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77
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78 Query query = session.createQuery(
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79 "select description from HYK where id = :hykid ");
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80 query.setParameter("hykid", hykid);
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81
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82 return (String) query.uniqueResult();
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83 }
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84
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85
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86 /**
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87 * Ask DB for hyk zones.
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88 * @param hykid ID of the 'main' HYK to query.
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89 * @param km for which to get the hyk-zones.
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90 * @return according zones.
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91 */
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92 public static List<Zone> getZonesUncached(int hykid, double km) {
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93 if (logger.isDebugEnabled()) {
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94 logger.debug("HYKFactory.getZoneUncached " + hykid + " km " + km);
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95 }
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96
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97 Session session = SessionHolder.HOLDER.get();
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98
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99 // Find out flow-direction of river.
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100 // OPTIMIZE: 1) query kmUp directly 2) merge queries.
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101 Query rQuery = session.createQuery("from HYK where id = :hykid");
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102 rQuery.setParameter("hykid", hykid);
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103 rQuery.setMaxResults(1);
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104 HYK hyk = (HYK) rQuery.uniqueResult();
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105
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106 double flowDir = hyk.getRiver().getKmUp() ? 1 : -1;
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107
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108 List<HYKFormation> forms = getHYKFormations(hykid, km, flowDir);
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109 List<Zone> zones = new ArrayList<Zone>();
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110
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111 // Take the first one.
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112 if (forms.size() >= 1) {
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113 HYKFormation form = forms.get(0);
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114 // Create respective zones.
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115 for (HYKFlowZone flowZone: form.getZones()) {
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116 Zone z = new Zone(flowZone.getA().doubleValue(),
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117 flowZone.getB().doubleValue(),
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118 flowZone.getType().getName());
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119 zones.add(z);
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120 }
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121 }
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122
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123 return zones;
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124 }
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125
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126
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127 protected static List<HYKFormation> getHYKFormations(
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128 int hykid,
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129 double km,
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130 double flowDir
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131 ) {
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132 Session session = SessionHolder.HOLDER.get();
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133
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134 String SQL = "SELECT " +
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135 " f.id AS FID, " +
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136 " f.distance_vl AS DIST, " +
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137 " e.hyk_id AS HID, " +
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138 " e.km AS KM " +
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139 " FROM hyk_formations f INNER JOIN hyk_entries e " +
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140 " ON e.id = f.hyk_entry_id " +
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141 " WHERE e.hyk_id = :hykid " +
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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142 " AND :km between " +
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143 " LEAST(e.km, e.km + :flowDir*(f.distance_vl/1000.0+0.001)) " +
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144 " AND " +
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145 " GREATEST(e.km, e.km + :flowDir*(f.distance_vl/1000.0+0.001))";
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146
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147 SQLQuery sqlQuery = session.createSQLQuery(SQL)
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148 .addScalar("FID", StandardBasicTypes.INTEGER)
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149 .addScalar("DIST", StandardBasicTypes.DOUBLE)
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150 .addScalar("HID", StandardBasicTypes.INTEGER)
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151 .addScalar("KM", StandardBasicTypes.DOUBLE);
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152
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153 sqlQuery.setInteger("hykid", hykid);
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154 sqlQuery.setDouble("flowDir", flowDir);
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155 sqlQuery.setDouble("km", km);
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156
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
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157 logger.debug("HYK SQL: " + sqlQuery.getQueryString());
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158
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159 List<Object[]> results = sqlQuery.list();
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160
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161 logger.debug("Found " + results.size() + " HYKFormation IDs in DB.");
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162
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163 if (results == null || results.isEmpty()) {
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164 logger.debug("No HYK found for ID " + hykid + " at km " + km);
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165 return new ArrayList<HYKFormation>();
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166 }
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167
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168 Object[] resultSet = results.get(0);
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169 Integer hykFormationId = (Integer) resultSet[0];
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170
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171 Query query = session.createQuery("from HYKFormation where id = :id");
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172 query.setParameter("id", hykFormationId);
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173 query.setMaxResults(1);
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174
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175 return query.list();
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176 }
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177
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178
3278
c27c4e06dd87 Re-add HYK rendering code to CrossSectionGenerator
Christian Lins <christian.lins@intevation.de>
parents: 2423
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179 /** Labeled section. */
2148
345a236f7075 Made HYKFactory.Zone Serializable (and thus cachable).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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180 public static class Zone implements Serializable {
2131
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181 /** Lower end of segment. */
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182 protected double from;
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183 /** Upper end of segment. */
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184 protected double to;
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185 /** The label. */
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186 protected String name;
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187
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188 /** Constructor for labelled section. */
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189 public Zone (double from, double to, String name) {
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190 this.from = from;
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191 this.to = to;
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192 this.name = name;
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193 }
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194
2137
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195 /** Get upper value. */
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196 public double getTo() {
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197 return to;
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198 }
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199
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200 /** Get lower value. */
2131
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201 public double getFrom() {
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202 return from;
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203 }
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204
2137
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205 /** Get name (type). */
2131
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206 public String getName() {
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207 return name;
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208 }
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209 } // public static class Zone
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210 }
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211 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org