Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/minfo/BedHeightFactory.java @ 3614:68beaa827751
MINFO: Implemented UI and facet/artifact stack for bed height differences.
flys-artifacts/trunk@5276 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Raimund Renkert <raimund.renkert@intevation.de> |
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date | Tue, 28 Aug 2012 11:45:23 +0000 |
parents | |
children | 633fbb61a0cc |
rev | line source |
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3614
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MINFO: Implemented UI and facet/artifact stack for bed height differences.
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1 package de.intevation.flys.artifacts.model.minfo; |
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2 |
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3 |
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4 import java.util.List; |
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5 |
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6 import net.sf.ehcache.Cache; |
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7 import net.sf.ehcache.Element; |
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8 |
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9 import org.apache.log4j.Logger; |
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10 import org.hibernate.SQLQuery; |
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11 import org.hibernate.Session; |
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12 import org.hibernate.type.StandardBasicTypes; |
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13 |
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14 import de.intevation.flys.artifacts.cache.CacheFactory; |
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15 import de.intevation.flys.artifacts.model.StaticBedHeightCacheKey; |
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16 import de.intevation.flys.backend.SessionHolder; |
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17 |
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18 public class BedHeightFactory { |
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19 /** Private logger to use here. */ |
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20 private static Logger log = Logger.getLogger(BedHeightFactory.class); |
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21 |
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22 /** Query to get km and ws for wst_id and column_pos. */ |
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23 public static final String SQL_SELECT_SINGLE = |
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24 "SELECT height, station, data_gap FROM bed_height_single_values " + |
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25 "WHERE id = :height_id"; |
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26 |
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27 /** Query to get name for wst_id and column_pos. */ |
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28 public static final String SQL_SELECT_EPOCH = |
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29 "SELECT height, station FROM bed_height_epoch_values "+ |
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30 "WHERE id = :height_id"; |
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31 |
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32 /** Query to get name (description) for wst_id. */ |
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33 public static final String SQL_SELECT_DESCR_SINGLE = |
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34 "SELECT description FROM bed_height_single "+ |
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35 "WHERE id = :height_id"; |
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36 |
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37 /** Query to get name (description) for wst_id. */ |
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38 public static final String SQL_SELECT_DESCR_EPOCH = |
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39 "SELECT description from bed_height_epoch "+ |
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40 "WHERE id = :height_id"; |
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41 |
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42 |
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43 private BedHeightFactory() { |
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44 } |
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45 |
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46 |
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47 /** |
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48 * Get WKms for given column and wst_id, caring about the cache. |
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49 */ |
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50 public static BedHeight getHeight(String type, int height_id, int time) { |
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51 log.debug("BedHeightFactory.getHeight"); |
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52 Cache cache = CacheFactory.getCache(StaticBedHeightCacheKey.CACHE_NAME); |
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53 |
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54 StaticBedHeightCacheKey cacheKey; |
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55 |
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56 if (cache != null) { |
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57 cacheKey = new StaticBedHeightCacheKey(height_id, time); |
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58 Element element = cache.get(cacheKey); |
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59 if (element != null) { |
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60 log.debug("Got static bedheight values from cache"); |
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61 return (BedHeight)element.getValue(); |
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62 } |
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63 } |
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64 else { |
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65 cacheKey = null; |
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66 } |
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67 |
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68 BedHeight values = getBedHeightUncached(type, height_id, time); |
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69 |
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70 if (values != null && cacheKey != null) { |
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71 log.debug("Store static bed height values in cache."); |
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72 Element element = new Element(cacheKey, values); |
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73 cache.put(element); |
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74 } |
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75 return values; |
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76 } |
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77 |
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78 /** Get name for a WKms. */ |
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79 public static String getHeightName(String type, int height_id) { |
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80 log.debug("BedHeightFactory.getHeightName height_id/" + height_id); |
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81 |
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82 String name = null; |
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83 Session session = SessionHolder.HOLDER.get(); |
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84 |
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85 SQLQuery nameQuery = null; |
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86 if (type.equals("single")) { |
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87 nameQuery = session.createSQLQuery(SQL_SELECT_DESCR_SINGLE) |
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88 .addScalar("description", StandardBasicTypes.STRING); |
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89 nameQuery.setInteger("height_id", height_id); |
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90 } |
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91 else if (type.equals("epoch")) { |
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92 nameQuery = session.createSQLQuery(SQL_SELECT_DESCR_EPOCH) |
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93 .addScalar("description", StandardBasicTypes.STRING); |
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94 nameQuery.setInteger("height_id", height_id); |
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95 } |
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96 else { |
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97 return "none"; |
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98 } |
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99 List<String> names = nameQuery.list(); |
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100 if (names.size() >= 1) { |
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101 name = names.get(0); |
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102 } |
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103 |
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104 return name; |
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105 } |
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106 |
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107 |
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108 /** |
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109 * Get WKms from db. |
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110 * @param column the position columns value |
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111 * @param wst_id database id of the wst |
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112 * @return according WKms. |
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113 */ |
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114 public static BedHeight getBedHeightUncached( |
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115 String type, |
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116 int height_id, |
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117 int time) |
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118 { |
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119 if (log.isDebugEnabled()) { |
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120 log.debug("BedHeightFactory.getBedHeightUncached"); |
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121 } |
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122 |
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123 BedHeight height = new BedHeight(getHeightName(type, height_id)); |
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124 |
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125 Session session = SessionHolder.HOLDER.get(); |
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126 SQLQuery sqlQuery = null; |
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127 if (type.equals("single")) { |
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128 sqlQuery = session.createSQLQuery(SQL_SELECT_SINGLE) |
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129 .addScalar("height", StandardBasicTypes.DOUBLE) |
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130 .addScalar("station", StandardBasicTypes.DOUBLE) |
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131 .addScalar("data_gap", StandardBasicTypes.DOUBLE); |
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132 sqlQuery.setInteger("height_id", height_id); |
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133 List<Object []> results = sqlQuery.list(); |
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134 |
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135 for (int i = 0; i <= results.size(); i++) { |
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136 Object[] row = results.get(i); |
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137 height.add((Double) row[0], (Double) row[1], (Double) row[2]); |
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138 } |
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139 } |
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140 else if (type.equals("epoch")) { |
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141 sqlQuery = session.createSQLQuery(SQL_SELECT_EPOCH) |
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142 .addScalar("height", StandardBasicTypes.DOUBLE) |
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143 .addScalar("station", StandardBasicTypes.DOUBLE); |
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144 sqlQuery.setInteger("height_id", height_id); |
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145 List<Object []> results = sqlQuery.list(); |
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146 |
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147 for (int i = 0; i <= results.size(); i++) { |
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148 Object[] row = results.get(i); |
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149 height.add((Double) row[0], (Double) row[1], 0); |
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150 } |
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151 } |
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152 |
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153 return height; |
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154 } |
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155 } |
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156 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |