Mercurial > dive4elements > river

annotate flys-backend/src/main/java/de/intevation/flys/model/CrossSection.java @ 5818:a4ff4167be1e

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Request feature info on all layers and show it as html if the server does not return valid gml. Non queryable layers produce an error message when the request fails. This is good enough
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 24 Apr 2013 17:33:27 +0200
parents 2ae732e2c65c
children
rev   line source
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491892931761 Added Hibernate models for cross-sections and their points.
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1 package de.intevation.flys.model;
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2
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3 import java.io.Serializable;
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4
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5 import java.util.List;
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6 import java.util.ArrayList;
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7
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8 import java.awt.geom.Point2D;
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9
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10 import javax.persistence.Entity;
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11 import javax.persistence.Id;
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12 import javax.persistence.Table;
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13 import javax.persistence.GeneratedValue;
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14 import javax.persistence.Column;
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15 import javax.persistence.SequenceGenerator;
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16 import javax.persistence.GenerationType;
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17 import javax.persistence.OneToOne;
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18 import javax.persistence.OneToMany;
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19 import javax.persistence.OrderBy;
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20 import javax.persistence.JoinColumn;
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21
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22 import java.math.MathContext;
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23 import java.math.BigDecimal;
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24
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25 import org.hibernate.Session;
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26 import org.hibernate.SQLQuery;
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27 import org.hibernate.Query;
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28
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29 import org.hibernate.type.StandardBasicTypes;
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30
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31 import de.intevation.flys.backend.SessionHolder;
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32
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33 @Entity
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34 @Table(name = "cross_sections")
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35 public class CrossSection
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36 implements Serializable
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37 {
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38 public static final MathContext PRECISION = new MathContext(6);
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39
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40 public static final String SQL_FAST_CROSS_SECTION_LINES =
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41 "SELECT km, x, y, csl.id AS csl_id " +
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42 "FROM cross_section_lines csl JOIN cross_section_points csp " +
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43 "ON csp.cross_section_line_id = csl.id " +
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44 "WHERE csl.cross_section_id = :cs_id AND " +
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45 "km between :from_km AND :to_km " +
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46 "ORDER BY csl.id, csp.col_pos";
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47
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48 private Integer id;
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49 private River river;
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50 private TimeInterval timeInterval;
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51 private String description;
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52 private List<CrossSectionLine> lines;
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53
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54 public CrossSection() {
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55 }
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56
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57 public CrossSection(
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58 River river,
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59 TimeInterval timeInterval,
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60 String description
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61 ) {
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62 this.river = river;
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63 this.timeInterval = timeInterval;
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64 this.description = description;
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65 }
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66
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67 @Id
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68 @SequenceGenerator(
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69 name = "SEQUENCE_CROSS_SECTIONS_ID_SEQ",
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70 sequenceName = "CROSS_SECTIONS_ID_SEQ",
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71 allocationSize = 1)
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72 @GeneratedValue(
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73 strategy = GenerationType.SEQUENCE,
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74 generator = "SEQUENCE_CROSS_SECTIONS_ID_SEQ")
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75 @Column(name = "id")
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76 public Integer getId() {
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77 return id;
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78 }
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79
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80 public void setId(Integer id) {
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81 this.id = id;
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82 }
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83
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84 @OneToOne
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85 @JoinColumn(name = "river_id")
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86 public River getRiver() {
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87 return river;
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88 }
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89
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90 public void setRiver(River river) {
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91 this.river = river;
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92 }
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93
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94 @OneToOne
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95 @JoinColumn(name = "time_interval_id")
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96 public TimeInterval getTimeInterval() {
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97 return timeInterval;
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98 }
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99
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100 public void setTimeInterval(TimeInterval timeInterval) {
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101 this.timeInterval = timeInterval;
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102 }
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103
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104 @Column(name = "description")
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105 public String getDescription() {
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106 return description;
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107 }
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108
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109 public void setDescription(String description) {
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110 this.description = description;
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111 }
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112
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113 @OneToMany
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114 @OrderBy("km")
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115 @JoinColumn(name="cross_section_id")
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116 public List<CrossSectionLine> getLines() {
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117 return lines;
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118 }
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119
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120 public void setLines(List<CrossSectionLine> lines) {
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121 this.lines = lines;
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122 }
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123
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124 public List<CrossSectionLine> getLines(double startKm, double endKm) {
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125 Session session = SessionHolder.HOLDER.get();
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126 Query query = session.createQuery(
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127 "from CrossSectionLine where crossSection=:crossSection " +
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128 "and km between :startKm and :endKm order by km");
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129 query.setParameter("crossSection", this);
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130 query.setParameter("startKm", new BigDecimal(startKm, PRECISION));
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131 query.setParameter("endKm", new BigDecimal(endKm, PRECISION));
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132
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133 return query.list();
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134 }
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135
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136 public List<FastCrossSectionLine> getFastLines(
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137 double startKm,
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138 double endKm
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139 ) {
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140 Session session = SessionHolder.HOLDER.get();
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141
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142 SQLQuery sqlQuery = session.createSQLQuery(SQL_FAST_CROSS_SECTION_LINES)
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143 .addScalar("km", StandardBasicTypes.DOUBLE)
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144 .addScalar("x", StandardBasicTypes.DOUBLE)
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145 .addScalar("y", StandardBasicTypes.DOUBLE)
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146 .addScalar("csl_id", StandardBasicTypes.INTEGER);
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147
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148 sqlQuery
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149 .setInteger("cs_id", getId())
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150 .setDouble("from_km", startKm)
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151 .setDouble("to_km", endKm);
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152
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153 List<Object []> results = sqlQuery.list();
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154
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155 ArrayList<Point2D> points = new ArrayList<Point2D>(500);
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156 ArrayList<FastCrossSectionLine> lines =
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157 new ArrayList<FastCrossSectionLine>();
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158
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159 Integer lastId = null;
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160 Double lastKm = null;
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161
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162 for (Object [] result: results) {
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163 Double km = (Double)result[0];
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164 Double x = (Double)result[1];
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165 Double y = (Double)result[2];
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166 Integer id = (Integer)result[3];
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167
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168 if (lastId != null && !lastId.equals(id)) {
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169 points.trimToSize();
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170 FastCrossSectionLine line =
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171 new FastCrossSectionLine(lastKm, points);
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172 lines.add(line);
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173 points = new ArrayList<Point2D>(500);
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174 }
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175
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176 Point2D p = new Point2D.Double(x, y);
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177
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178 if (CrossSectionLine.isValid(p)) {
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179 points.add(p);
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180 }
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181
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182 lastKm = km;
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183 lastId = id;
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184 }
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185
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186 if (lastId != null) {
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187 points.trimToSize();
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188 FastCrossSectionLine line =
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189 new FastCrossSectionLine(lastKm, points);
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190 lines.add(line);
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191 }
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192
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193 lines.trimToSize();
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194
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195 return lines;
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196 }
1194
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197 }
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198 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org