Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/exports/MapGenerator.java @ 1774:092e1e5020bc
Added a new MapGenerator which only returns a map configuration document at the moment (work still in progress).
flys-artifacts/trunk@3095 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Fri, 28 Oct 2011 05:54:25 +0000 |
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children | 0156105222c9 |
rev | line source |
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1774
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Added a new MapGenerator which only returns a map configuration document at the moment (work still in progress).
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1 package de.intevation.flys.exports; |
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2 |
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3 import java.io.IOException; |
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4 import java.io.OutputStream; |
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5 import java.util.ArrayList; |
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6 import java.util.List; |
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7 |
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8 import org.w3c.dom.Document; |
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9 import org.w3c.dom.Element; |
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10 |
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11 import org.apache.log4j.Logger; |
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12 |
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13 import com.vividsolutions.jts.geom.Envelope; |
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14 |
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15 import de.intevation.artifacts.Artifact; |
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16 import de.intevation.artifacts.CallContext; |
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17 |
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18 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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19 import de.intevation.artifacts.common.utils.XMLUtils; |
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20 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; |
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21 |
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22 import de.intevation.artifactdatabase.state.Facet; |
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23 |
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24 import de.intevation.flys.artifacts.FLYSArtifact; |
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25 import de.intevation.flys.artifacts.model.FacetTypes; |
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26 import de.intevation.flys.artifacts.model.WMSLayerFacet; |
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27 import de.intevation.flys.utils.GeometryUtils; |
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28 |
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29 |
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30 public class MapGenerator implements OutGenerator, FacetTypes { |
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31 |
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32 private static Logger logger = Logger.getLogger(MapGenerator.class); |
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33 |
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34 |
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35 protected Artifact master; |
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36 |
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37 protected Document request; |
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38 |
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39 protected OutputStream out; |
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40 |
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41 protected CallContext context; |
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42 |
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43 protected List<WMSLayerFacet> layers; |
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44 |
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45 protected Envelope maxExtent; |
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46 protected Envelope initialExtent; |
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47 |
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48 protected String srid; |
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49 |
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50 |
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51 |
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52 @Override |
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53 public void init(Document request, OutputStream out, CallContext context) { |
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54 logger.debug("MapGenerator.init"); |
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55 |
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56 this.request = request; |
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57 this.out = out; |
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58 this.context = context; |
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59 |
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60 this.layers = new ArrayList<WMSLayerFacet>(); |
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61 |
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62 this.maxExtent = null; |
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63 this.initialExtent = null; |
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64 } |
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65 |
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66 |
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67 @Override |
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68 public void setMasterArtifact(Artifact master) { |
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69 logger.debug("MapGenerator.setMasterArtifact"); |
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70 this.master = master; |
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71 } |
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72 |
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73 |
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74 @Override |
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75 public void doOut( |
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76 Artifact artifact, |
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77 Facet facet, |
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78 Document attr, |
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79 boolean visible) |
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80 { |
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81 String name = facet.getName(); |
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82 |
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83 logger.debug("MapGenerator.doOut: " +artifact.identifier()+" | "+name); |
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84 FLYSArtifact flys = (FLYSArtifact) artifact; |
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85 |
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86 Facet nativeFacet = flys.getNativeFacet(facet); |
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87 |
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88 if (nativeFacet instanceof WMSLayerFacet) { |
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89 WMSLayerFacet wms = (WMSLayerFacet) nativeFacet; |
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90 Envelope extent = wms.getExtent(); |
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91 |
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92 layers.add(wms); |
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93 |
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94 setMaxExtent(extent); |
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95 setSrid(wms.getSrid()); |
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96 |
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97 if (FLOODMAP_WSPLGEN.equals(name) && initialExtent == null) { |
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98 setInitialExtent(extent); |
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99 } |
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100 } |
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101 else { |
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102 logger.warn("Facet not supported: " + nativeFacet.getClass()); |
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103 } |
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104 |
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105 } |
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106 |
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107 |
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108 @Override |
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109 public void generate() |
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110 throws IOException |
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111 { |
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112 logger.debug("MapGenerator.generate"); |
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113 |
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114 Document response = XMLUtils.newDocument(); |
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115 ElementCreator c = new ElementCreator( |
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116 response, |
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117 ArtifactNamespaceContext.NAMESPACE_URI, |
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118 ArtifactNamespaceContext.NAMESPACE_PREFIX); |
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119 |
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120 Element root = c.create("floodmap"); |
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121 Element layers = c.create("layers"); |
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122 |
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123 response.appendChild(root); |
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124 root.appendChild(layers); |
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125 |
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126 appendLayers(layers); |
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127 appendMapInformation(root, c); |
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128 |
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129 XMLUtils.toStream(response, out); |
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130 } |
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131 |
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132 |
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133 protected void appendLayers(Element parent) { |
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134 for (WMSLayerFacet facet: layers) { |
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135 parent.appendChild(facet.toXML(parent.getOwnerDocument())); |
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136 } |
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137 } |
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138 |
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139 |
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140 protected void setMaxExtent(Envelope maxExtent) { |
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141 if (maxExtent == null) { |
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142 return; |
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143 } |
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144 |
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145 if (this.maxExtent == null) { |
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146 logger.debug("Set max extent to: " + maxExtent); |
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147 this.maxExtent = maxExtent; |
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148 return; |
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149 } |
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150 |
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151 logger.debug("Expand max extent by: " + maxExtent); |
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152 logger.debug("Max extent before expanding: " + this.maxExtent); |
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153 this.maxExtent.expandToInclude(maxExtent); |
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154 logger.debug("Max extent after expanding: " + this.maxExtent); |
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155 } |
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156 |
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157 |
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158 protected void setInitialExtent(Envelope initialExtent) { |
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159 if (initialExtent == null) { |
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160 return; |
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161 } |
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162 |
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163 if (this.initialExtent == null) { |
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164 logger.debug("Set initial extent to: " + initialExtent); |
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165 this.initialExtent = initialExtent; |
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166 return; |
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167 } |
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168 |
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169 logger.debug("Set initial extent to: " + initialExtent); |
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170 this.initialExtent = initialExtent; |
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171 } |
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172 |
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173 |
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174 protected void setSrid(String srid) { |
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175 if (srid == null || srid.length() == 0) { |
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176 return; |
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177 } |
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178 |
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179 this.srid = srid; |
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180 } |
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181 |
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182 |
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183 protected void appendMapInformation(Element parent, ElementCreator c) { |
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184 String mE = GeometryUtils.jtsBoundsToOLBounds(this.maxExtent); |
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185 logger.debug("BUILD MAX EXTENT OF:" + this.maxExtent); |
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186 logger.debug("BUILD MAX EXTENT:" + mE); |
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187 |
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188 Element maxExtent = c.create("maxExtent"); |
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189 maxExtent.setTextContent(mE); |
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190 |
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191 String iE = GeometryUtils.jtsBoundsToOLBounds(this.initialExtent); |
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192 logger.debug("BUILD INITIAL EXTENT OF: " + this.initialExtent); |
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193 logger.debug("BUILD INITIAL EXTENT: " + iE); |
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194 Element initExtent = c.create("initialExtent"); |
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195 initExtent.setTextContent(iE); |
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196 |
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197 Element srid = c.create("srid"); |
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198 srid.setTextContent(this.srid); |
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199 |
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200 // TODO zoom levels |
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201 // TODO resolutation |
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202 |
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203 parent.appendChild(maxExtent); |
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204 parent.appendChild(initExtent); |
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205 parent.appendChild(srid); |
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206 } |
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207 } |
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208 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |