Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/artifacts/model/WKmsFactory.java @ 7686:7484132b2fbb

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issue1577: Add W-Wrapping of wst-names in WKmsFactory if kind is one of a kind.
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Thu, 12 Dec 2013 07:57:13 +0100
parents af13ceeba52a
children 5484818087de
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.artifacts.model;
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10
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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
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18 import org.hibernate.Session;
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19
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20 import org.hibernate.SQLQuery;
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21 import org.hibernate.type.StandardBasicTypes;
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22
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23 import org.dive4elements.river.artifacts.cache.CacheFactory;
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24
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25 import org.dive4elements.river.backend.SessionHolder;
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26
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27
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28 /**
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29 * Factory to access ready-made WKms for other (than computed) 'kinds' of
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30 * WST-data.
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31 */
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32 public class WKmsFactory
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33 {
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34 /** Private logger to use here. */
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35 private static Logger log = Logger.getLogger(WKmsFactory.class);
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36
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37 /** Query to get km and ws for wst_id and column_pos. */
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38 public static final String SQL_SELECT_WS =
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39 "SELECT km, w FROM wst_w_values " +
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40 "WHERE wst_id = :wst_id AND column_pos = :column_pos";
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41
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42 /** Query to get name for wst_id and column_pos. */
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43 public static final String SQL_SELECT_NAME =
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44 "SELECT name " +
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45 "FROM wst_columns "+
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46 "WHERE wst_id = :wst_id AND position = :column_pos";
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47
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48 /** Query to get name and kind for wst_id and column_pos. */
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49 public static final String SQL_SELECT_NAME_KIND =
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50 "SELECT wst_columns.name, wsts.kind " +
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51 "FROM wst_columns JOIN wsts on wst_id = wsts.id "+
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52 "WHERE wst_id = :wst_id AND position = :column_pos";
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53
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54 /** Query to get name (description) for wst_id. */
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55 public static final String SQL_SELECT_WST_NAME =
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56 "SELECT description from wsts "+
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57 "WHERE id = :wst_id";
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58
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59 /** Query to get name (description) and kind for wst_id. */
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60 public static final String SQL_SELECT_WST_NAME_KIND =
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61 "SELECT description, kind from wsts "+
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62 "WHERE id = :wst_id";
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63
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64
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65 private WKmsFactory() {
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66 }
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67
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68
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69 /**
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70 * Get WKms for given column and wst_id, caring about the cache.
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71 */
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72 public static WKms getWKms(int column, int wst_id) {
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73 log.debug("WKmsFactory.getWKms");
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74 Cache cache = CacheFactory.getCache(StaticWKmsCacheKey.CACHE_NAME);
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75
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76 StaticWKmsCacheKey cacheKey;
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77
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78 if (cache != null) {
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79 cacheKey = new StaticWKmsCacheKey(wst_id, column);
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80 Element element = cache.get(cacheKey);
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81 if (element != null) {
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82 log.debug("Got static wst values from cache");
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83 return (WKms)element.getValue();
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84 }
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85 }
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86 else {
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87 cacheKey = null;
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88 }
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89
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90 WKms values = getWKmsUncached(column, wst_id);
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91
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92 if (values != null && cacheKey != null) {
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93 log.debug("Store static wst values in cache.");
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94 Element element = new Element(cacheKey, values);
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95 cache.put(element);
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96 }
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97 return values;
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98 }
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99
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100 /** Get name for a WKms wrapped in W, if suitable. */
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101 public static String getWKmsNameWWrapped(int wst_id) {
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102 log.debug("WKmsFactory.getWKmsNameWWrapped wst_id/" + wst_id);
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103
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104 String name = null;
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105 Session session = SessionHolder.HOLDER.get();
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106
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107 SQLQuery nameQuery = session.createSQLQuery(SQL_SELECT_WST_NAME_KIND)
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108 .addScalar("description", StandardBasicTypes.STRING)
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109 .addScalar("kind", StandardBasicTypes.INTEGER);
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110 nameQuery.setInteger("wst_id", wst_id);
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111
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112 List<Object[]> names = nameQuery.list();
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113
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114 if (names.size() >= 1) {
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115 Object[] row = names.get(0);
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116 name = (String) row[0];
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117 Integer kind = (Integer) row[1];
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118 if (kind == 0 || kind == 2 || kind == 3)
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119 name = "W(" + name + ")";
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120 }
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121
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122 return name;
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123 }
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124
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126 /** Get name for a WKms wrapped in W, if suitable. */
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127 public static String getWKmsNameWWrapped(int column, int wst_id) {
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128 log.debug("WKmsFactory.getWKmsNameWWrapped c/" + column + ", wst_id/" + wst_id);
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129
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130 String name = null;
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131 Session session = SessionHolder.HOLDER.get();
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132
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133 SQLQuery nameQuery = session.createSQLQuery(SQL_SELECT_NAME_KIND)
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134 .addScalar("name", StandardBasicTypes.STRING)
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135 .addScalar("kind", StandardBasicTypes.INTEGER);
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136 nameQuery.setInteger("wst_id", wst_id);
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137 nameQuery.setInteger("column_pos", column);
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138
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139 List<Object[]> names = nameQuery.list();
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140
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141 if (names.size() >= 1) {
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142 Object[] row = names.get(0);
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143 name = (String) row[0];
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144 Integer kind = (Integer) row[1];
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145 if (kind == 0 || kind == 2 || kind == 3)
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146 name = "W(" + name + ")";
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147 }
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148
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149 return name;
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150 }
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151
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152
1892
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153 /** Get name for a WKms. */
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154 public static String getWKmsName(int wst_id) {
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155 log.debug("WKmsFactory.getWKmsName wst_id/" + wst_id);
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156
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157 String name = null;
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158 Session session = SessionHolder.HOLDER.get();
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159
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160 SQLQuery nameQuery = session.createSQLQuery(SQL_SELECT_WST_NAME)
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161 .addScalar("description", StandardBasicTypes.STRING);
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162 nameQuery.setInteger("wst_id", wst_id);
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163
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164 List<String> names = nameQuery.list();
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165 if (names.size() >= 1) {
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166 name = names.get(0);
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167 }
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168
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169 return name;
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170 }
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171
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172 /** Get name for a WKms. */
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173 public static String getWKmsName(int column, int wst_id) {
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174 log.debug("WKmsFactory.getWKmsName c/" + column + ", wst_id/" + wst_id);
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175
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176 String name = null;
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177 Session session = SessionHolder.HOLDER.get();
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178
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179 SQLQuery nameQuery = session.createSQLQuery(SQL_SELECT_NAME)
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180 .addScalar("name", StandardBasicTypes.STRING);
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181 nameQuery.setInteger("wst_id", wst_id);
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182 nameQuery.setInteger("column_pos", column);
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183
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184 List<String> names = nameQuery.list();
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185 if (names.size() >= 1) {
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186 name = names.get(0);
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187 }
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188
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189 return name;
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190 }
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191
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192
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193 /**
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194 * Get WKms from db.
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195 * @param column the position columns value
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196 * @param wst_id database id of the wst
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197 * @return according WKms.
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198 */
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199 public static WKms getWKmsUncached(int column, int wst_id) {
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200
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201 if (log.isDebugEnabled()) {
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202 log.debug("WKmsFactory.getWKmsUncached c/" + column + ", wst_id/" + wst_id);
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203 }
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204
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205 WKmsImpl wkms = new WKmsImpl(getWKmsName(column, wst_id));
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206
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207 Session session = SessionHolder.HOLDER.get();
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208 SQLQuery sqlQuery = session.createSQLQuery(SQL_SELECT_WS)
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209 .addScalar("km", StandardBasicTypes.DOUBLE)
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210 .addScalar("w", StandardBasicTypes.DOUBLE);
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211 sqlQuery.setInteger("wst_id", wst_id);
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212 sqlQuery.setInteger("column_pos", column);
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213
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214 List<Object []> results = sqlQuery.list();
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215
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216 for (int i = 0, N = results.size(); i < N; i++) {
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217 Object[] row = results.get(i);
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218 wkms.add((Double) row[0], (Double) row[1]);
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219 }
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220
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221 return wkms;
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222 }
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223 }
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224 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org