svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.plugin / org.gvsig.app / org.gvsig.app.mainplugin / src / main / java / org / gvsig / app / project / symboltables / ProjectSymbolTable.java @ 44129
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1 | 44129 | jjdelcerro | package org.gvsig.app.project.symboltables; |
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2 | 43987 | jjdelcerro | |
3 | import java.io.File; |
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4 | import java.io.FileInputStream; |
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5 | import java.util.HashMap; |
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6 | 43997 | jjdelcerro | import java.util.Iterator; |
7 | 43987 | jjdelcerro | import java.util.Map; |
8 | import java.util.Properties; |
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9 | import org.apache.commons.io.IOUtils; |
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10 | import org.apache.commons.lang3.Range; |
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11 | 43997 | jjdelcerro | import org.cresques.cts.IProjection; |
12 | 44025 | jjdelcerro | import org.gvsig.app.ApplicationLocator; |
13 | import org.gvsig.app.ApplicationManager; |
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14 | 44129 | jjdelcerro | import org.gvsig.app.project.Project; |
15 | import org.gvsig.app.project.ProjectManager; |
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16 | 43997 | jjdelcerro | import org.gvsig.app.project.documents.Document; |
17 | 43987 | jjdelcerro | import org.gvsig.app.project.documents.view.ViewDocument; |
18 | import org.gvsig.app.project.documents.view.ViewManager; |
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19 | import org.gvsig.expressionevaluator.Interpreter; |
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20 | import org.gvsig.expressionevaluator.spi.AbstractFunction; |
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21 | import org.gvsig.expressionevaluator.spi.AbstractSymbolTable; |
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22 | 43997 | jjdelcerro | import org.gvsig.fmap.crs.CRSFactory; |
23 | 43987 | jjdelcerro | import org.gvsig.fmap.dal.feature.Feature; |
24 | import org.gvsig.fmap.dal.feature.FeatureQuery; |
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25 | import org.gvsig.fmap.dal.feature.FeatureSelection; |
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26 | import org.gvsig.fmap.dal.feature.FeatureSet; |
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27 | import org.gvsig.fmap.dal.feature.FeatureStore; |
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28 | 43997 | jjdelcerro | import org.gvsig.fmap.geom.Geometry; |
29 | 44035 | jjdelcerro | import org.gvsig.fmap.geom.primitive.Point; |
30 | 43997 | jjdelcerro | import org.gvsig.fmap.mapcontext.MapContext; |
31 | 43987 | jjdelcerro | import org.gvsig.fmap.mapcontext.layers.FLayer; |
32 | import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect; |
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33 | 43997 | jjdelcerro | import org.gvsig.fmap.mapcontrol.AreaAndPerimeterCalculator; |
34 | 44035 | jjdelcerro | import org.gvsig.temporarystorage.TemporaryStorageGroup; |
35 | import org.gvsig.temporarystorage.TemporaryStorageLocator; |
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36 | import org.gvsig.temporarystorage.TemporaryStorageManager; |
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37 | 43987 | jjdelcerro | |
38 | /**
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39 | *
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40 | * @author jjdelcerro
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41 | */
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42 | @SuppressWarnings("UseSpecificCatch") |
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43 | public class ProjectSymbolTable extends AbstractSymbolTable { |
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44 | |||
45 | 44129 | jjdelcerro | public static final String AREA_NAME = "AREA"; |
46 | public static final String PERIMETER_NAME = "PERIMETER"; |
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47 | public static final String FIRSTLAYERFEATURE_NAME = "FirstLayerFeature"; |
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48 | |||
49 | static final String NAME = "Project"; |
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50 | |||
51 | 43987 | jjdelcerro | private abstract class CachedValue<T> { |
52 | |||
53 | T value = null;
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54 | long lastAccess = 0; |
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55 | |||
56 | protected abstract void reload(); |
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57 | |||
58 | public boolean isExpired() { |
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59 | long now = System.currentTimeMillis(); |
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60 | return now - lastAccess > 3000; |
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61 | } |
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62 | |||
63 | public T get() {
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64 | if (isExpired()) {
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65 | reload(); |
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66 | } |
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67 | lastAccess = System.currentTimeMillis();
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68 | return value;
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69 | } |
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70 | } |
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71 | |||
72 | private class ProjectValue extends CachedValue<Project> { |
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73 | |||
74 | @Override
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75 | protected void reload() { |
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76 | value = ProjectManager.getInstance().getCurrentProject(); |
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77 | } |
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78 | |||
79 | } |
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80 | |||
81 | 44025 | jjdelcerro | private class CurrentViewValue extends CachedValue<ViewDocument> { |
82 | |||
83 | @Override
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84 | protected void reload() { |
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85 | ApplicationManager application = ApplicationLocator.getManager(); |
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86 | ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME); |
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87 | value = viewdoc; |
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88 | } |
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89 | |||
90 | } |
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91 | |||
92 | private class CurrentViewEnvelopeValue extends CachedValue<Geometry> { |
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93 | |||
94 | @Override
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95 | protected void reload() { |
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96 | ApplicationManager application = ApplicationLocator.getManager(); |
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97 | ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME); |
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98 | if( viewdoc == null ) { |
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99 | value = null;
|
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100 | return;
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101 | } |
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102 | value = viewdoc.getMapContext().getViewPort().getEnvelope().getGeometry(); |
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103 | } |
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104 | |||
105 | } |
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106 | |||
107 | 43987 | jjdelcerro | private class PropertiesValue extends CachedValue<Map<File, Properties>> { |
108 | |||
109 | @Override
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110 | protected void reload() { |
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111 | value = new HashMap<>(); |
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112 | } |
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113 | } |
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114 | |||
115 | private class CurrentProjectFunction extends AbstractFunction { |
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116 | |||
117 | public CurrentProjectFunction() {
|
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118 | super(
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119 | "Project",
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120 | "project",
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121 | Range.is(0),
|
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122 | "Access to the current project loaded in gvSIG desktop.\n",
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123 | "project()",
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124 | null,
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125 | "Project"
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126 | ); |
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127 | } |
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128 | |||
129 | @Override
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130 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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131 | return currentProject.get();
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132 | } |
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133 | |||
134 | } |
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135 | |||
136 | private class FirstSelectedFeatureFunction extends AbstractFunction { |
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137 | |||
138 | public FirstSelectedFeatureFunction() {
|
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139 | super(
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140 | "Project",
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141 | "firstSelectedFeature",
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142 | Range.between(3, 4), |
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143 | "Access to the first selected feature of the layer, and "
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144 | + "return the value of the attribute.",
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145 | "firstSelectedFeature({{view}}, layer, attribute, defaulValue)",
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146 | new String[]{ |
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147 | "view - String value with the name of a view",
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148 | "layer - String value with the name of a layer in the indicated view",
|
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149 | "attribute - String value with the name of the attribute in the indicated layer",
|
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150 | "defaultValue - Optional. Value to use if the indicated "
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151 | + "attribute can not be accessed. For example, if the "
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152 | + "view or layer does not exist, or it does not have "
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153 | + "selected elements."
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154 | }, |
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155 | "Object"
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156 | ); |
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157 | } |
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158 | |||
159 | @Override
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160 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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161 | Object defaultValue = null; |
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162 | String viewName = getStr(args, 0); |
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163 | String layerName = getStr(args, 1); |
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164 | String attrName = getStr(args, 2); |
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165 | if (args.length == 4) { |
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166 | defaultValue = getObject(args, 3);
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167 | } |
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168 | try {
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169 | Project project = currentProject.get(); |
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170 | ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
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171 | if (view == null) { |
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172 | return defaultValue;
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173 | } |
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174 | FLayer layer = view.getLayer(layerName); |
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175 | if (!(layer instanceof FLyrVect)) { |
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176 | return defaultValue;
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177 | } |
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178 | FeatureSelection selection = ((FLyrVect) layer).getFeatureStore().getFeatureSelection(); |
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179 | if (selection == null || selection.isEmpty()) { |
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180 | return defaultValue;
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181 | } |
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182 | Feature feature = selection.first(); |
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183 | if (feature == null) { |
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184 | return defaultValue;
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185 | } |
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186 | return feature.get(attrName);
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187 | } catch (Exception ex) { |
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188 | return defaultValue;
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189 | } |
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190 | } |
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191 | |||
192 | } |
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193 | |||
194 | 44129 | jjdelcerro | private class FirstLayerFeatureFunction extends AbstractFunction { |
195 | 43987 | jjdelcerro | |
196 | 44129 | jjdelcerro | public FirstLayerFeatureFunction() {
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197 | 43987 | jjdelcerro | super(
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198 | "Project",
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199 | 44129 | jjdelcerro | FIRSTLAYERFEATURE_NAME, |
200 | 43987 | jjdelcerro | Range.between(3, 6), |
201 | "Access to the first feature of the layer, and "
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202 | + "return the value of the attribute.",
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203 | 44129 | jjdelcerro | FIRSTLAYERFEATURE_NAME+"({{view}}, layer, attribute, filter, order, defaulValue)",
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204 | 43987 | jjdelcerro | new String[]{ |
205 | "view - String value with the name of a view",
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206 | "layer - String value with the name of a layer in the indicated view",
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207 | "attribute - String value with the name of the attribute in the indicated layer",
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208 | "filter - Optional. String value with a filter expression",
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209 | "order - Optional. String value with the order. must be a string with the names of separate fields with commas",
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210 | "defaultValue - Optional. Value to use if the indicated "
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211 | + "attribute can not be accessed. For example, if the "
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212 | + "view or layer does not exist."
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213 | }, |
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214 | "Object"
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215 | ); |
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216 | } |
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217 | |||
218 | @Override
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219 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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220 | Object defaultValue = null; |
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221 | String filter = null; |
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222 | String order = null; |
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223 | String viewName = getStr(args, 0); |
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224 | String layerName = getStr(args, 1); |
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225 | String attrName = getStr(args, 2); |
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226 | 43997 | jjdelcerro | switch (args.length) {
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227 | 43987 | jjdelcerro | case 4: |
228 | filter = getStr(args, 3);
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229 | break;
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230 | case 5: |
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231 | filter = getStr(args, 3);
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232 | order = getStr(args, 4);
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233 | break;
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234 | case 6: |
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235 | filter = getStr(args, 3);
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236 | order = getStr(args, 4);
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237 | defaultValue = getObject(args, 6);
|
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238 | break;
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239 | } |
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240 | try {
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241 | Project project = currentProject.get(); |
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242 | ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
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243 | if (view == null) { |
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244 | return defaultValue;
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245 | } |
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246 | FLayer layer = view.getLayer(layerName); |
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247 | if (!(layer instanceof FLyrVect)) { |
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248 | return defaultValue;
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249 | } |
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250 | FeatureStore store = ((FLyrVect) layer).getFeatureStore(); |
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251 | FeatureSet set; |
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252 | 43997 | jjdelcerro | if (filter == null && order == null) { |
253 | 43987 | jjdelcerro | set = store.getFeatureSet(); |
254 | } else {
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255 | FeatureQuery query = store.createFeatureQuery(); |
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256 | 43997 | jjdelcerro | if (filter != null) { |
257 | 43987 | jjdelcerro | query.addFilter(filter); |
258 | } |
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259 | 43997 | jjdelcerro | if (order != null) { |
260 | 43987 | jjdelcerro | query.getOrder().add(order); |
261 | } |
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262 | 44129 | jjdelcerro | query.retrievesAllAttributes(); |
263 | 43987 | jjdelcerro | set = store.getFeatureSet(query); |
264 | } |
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265 | Feature feature = set.first(); |
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266 | if (feature == null) { |
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267 | return defaultValue;
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268 | } |
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269 | return feature.get(attrName);
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270 | } catch (Exception ex) { |
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271 | return defaultValue;
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272 | } |
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273 | } |
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274 | |||
275 | } |
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276 | |||
277 | private class ViewFunction extends AbstractFunction { |
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278 | |||
279 | public ViewFunction() {
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280 | super(
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281 | "Project",
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282 | "view",
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283 | Range.is(1),
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284 | "Access to the indicated view",
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285 | "view({{viewName}})",
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286 | new String[]{ |
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287 | "view - String value with the name of a view"
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288 | }, |
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289 | "DocumentView"
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290 | ); |
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291 | } |
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292 | |||
293 | @Override
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294 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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295 | String viewName = getStr(args, 0); |
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296 | Project project = currentProject.get(); |
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297 | ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
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298 | return view;
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299 | } |
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300 | |||
301 | } |
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302 | |||
303 | 44025 | jjdelcerro | private class ViewBBoxFunction extends AbstractFunction { |
304 | |||
305 | public ViewBBoxFunction() {
|
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306 | super(
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307 | "Project",
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308 | "viewbbox",
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309 | Range.is(0),
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310 | "Return the BBox of the active view.",
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311 | "viewbbox()",
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312 | null,
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313 | "Geometry"
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314 | ); |
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315 | } |
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316 | |||
317 | @Override
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318 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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319 | return currentViewEnvelope.get();
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320 | } |
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321 | |||
322 | } |
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323 | |||
324 | 44035 | jjdelcerro | |
325 | private class SavedPointFunction extends AbstractFunction { |
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326 | |||
327 | public SavedPointFunction() {
|
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328 | super(
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329 | "Project",
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330 | "savedpoint",
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331 | Range.is(1),
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332 | "Return the value of the saved point with the name indicated.\n"
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333 | + "If the named point do not exists return null.",
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334 | "savedpoint({{name}})",
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335 | new String[]{ |
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336 | "name - String value with the name of the point"
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337 | }, |
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338 | "Geometry"
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339 | ); |
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340 | } |
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341 | |||
342 | @Override
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343 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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344 | TemporaryStorageManager manager = TemporaryStorageLocator.getTemporaryStorageManager(); |
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345 | TemporaryStorageGroup storage = manager.create("Points",Point.class); |
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346 | Geometry value = (Geometry) storage.get(getStr(args, 0));
|
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347 | return value;
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348 | } |
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349 | |||
350 | } |
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351 | |||
352 | 44129 | jjdelcerro | private class AreaFunction extends AbstractFunction { |
353 | |||
354 | 43997 | jjdelcerro | public AreaFunction() {
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355 | super(
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356 | "Project",
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357 | 44129 | jjdelcerro | AREA_NAME, |
358 | 43999 | jjdelcerro | Range.between(2,3), |
359 | 43997 | jjdelcerro | "Calculate the area of the geometry in the indicated units",
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360 | 44129 | jjdelcerro | AREA_NAME+"({{geometry}}, 'm?')",
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361 | 43997 | jjdelcerro | new String[]{ |
362 | "geometry - Geometry",
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363 | 43999 | jjdelcerro | "Projection - Optional. Projection of the geometry or a string with the projection name",
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364 | 43997 | jjdelcerro | "units - String value with the name the units to use"
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365 | }, |
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366 | "Double"
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367 | ); |
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368 | } |
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369 | |||
370 | @Override
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371 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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372 | 43999 | jjdelcerro | int units = 0; |
373 | IProjection proj = null;
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374 | 43997 | jjdelcerro | Geometry geom = getGeom(args, 0);
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375 | 43999 | jjdelcerro | switch( args.length ) {
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376 | case 2: |
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377 | units = getUnits(args, 1);
|
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378 | break;
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379 | case 3: |
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380 | proj = getProjection(args, 1);
|
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381 | units = getUnits(args, 2);
|
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382 | break;
|
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383 | } |
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384 | 43997 | jjdelcerro | if (proj == null) { |
385 | proj = geom.getProjection(); |
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386 | } |
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387 | AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();
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388 | double area = calculator.area(geom, proj, units);
|
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389 | return area;
|
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390 | } |
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391 | } |
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392 | |||
393 | private class PerimeterFunction extends AbstractFunction { |
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394 | |||
395 | public PerimeterFunction() {
|
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396 | super(
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397 | "Project",
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398 | 44129 | jjdelcerro | PERIMETER_NAME, |
399 | 43999 | jjdelcerro | Range.between(2,3), |
400 | 43997 | jjdelcerro | "Calculate the perimeter of the geometry in the indicated units",
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401 | 44129 | jjdelcerro | PERIMETER_NAME+"({{geometry}}, 'm')",
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402 | 43997 | jjdelcerro | new String[]{ |
403 | "geometry - Geometry",
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404 | 43999 | jjdelcerro | "Projection - Optional. Projection of the geometry or a string with the projection name",
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405 | 43997 | jjdelcerro | "units - String value with the name the units to use"
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406 | }, |
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407 | "Double"
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408 | ); |
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409 | } |
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410 | |||
411 | @Override
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412 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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413 | 43999 | jjdelcerro | int units = 0; |
414 | IProjection proj = null;
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415 | 43997 | jjdelcerro | Geometry geom = getGeom(args, 0);
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416 | 43999 | jjdelcerro | switch( args.length ) {
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417 | case 2: |
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418 | units = getUnits(args, 1);
|
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419 | break;
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420 | case 3: |
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421 | proj = getProjection(args, 1);
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422 | units = getUnits(args, 2);
|
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423 | break;
|
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424 | } |
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425 | 43997 | jjdelcerro | if (proj == null) { |
426 | proj = geom.getProjection(); |
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427 | } |
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428 | AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();
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429 | double area = calculator.perimeter(geom, proj, units);
|
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430 | return area;
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431 | } |
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432 | } |
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433 | |||
434 | 43987 | jjdelcerro | private class PropertyFunction extends AbstractFunction { |
435 | |||
436 | public PropertyFunction() {
|
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437 | super(
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438 | "Project",
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439 | "property",
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440 | Range.between(2, 3), |
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441 | "Access to a property value in a properties file. If the"
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442 | + "indicated filename is not absolute, access it relative"
|
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443 | + "to the project.",
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444 | "property({{filename}}, name, defaultValue)",
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445 | new String[]{ |
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446 | "filename - String value with the name of the properties file",
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447 | "name - String value with the name of the property to retrieve from the file",
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448 | "defaultValue - Optional. Default value if can't access the file or the property",},
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449 | "String"
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450 | ); |
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451 | } |
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452 | |||
453 | @Override
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454 | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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455 | String filename = getStr(args, 0); |
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456 | String name = getStr(args, 1); |
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457 | String defaultValue = null; |
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458 | if (args.length == 3) { |
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459 | defaultValue = getStr(args, 2);
|
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460 | } |
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461 | |||
462 | File file = new File(filename); |
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463 | if (!file.isAbsolute()) {
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464 | Project project = currentProject.get(); |
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465 | if (project.getFile() == null) { |
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466 | return defaultValue;
|
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467 | } |
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468 | file = new File(project.getFile().getParent(), filename); |
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469 | } |
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470 | Map<File, Properties> x = propertiesFiles.get(); |
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471 | Properties properties = x.get(file);
|
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472 | if (properties == null) { |
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473 | properties = new Properties(); |
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474 | FileInputStream in = null; |
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475 | try {
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476 | in = new FileInputStream(file); |
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477 | properties.load(in); |
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478 | } catch (Exception ex) { |
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479 | return defaultValue;
|
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480 | } finally {
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481 | IOUtils.closeQuietly(in); |
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482 | } |
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483 | x.put(file, properties); |
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484 | } |
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485 | String value = properties.getProperty(name, defaultValue);
|
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486 | return value;
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487 | } |
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488 | |||
489 | } |
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490 | |||
491 | ProjectValue currentProject = new ProjectValue();
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492 | 44025 | jjdelcerro | CurrentViewValue currentView = new CurrentViewValue();
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493 | CurrentViewEnvelopeValue currentViewEnvelope = new CurrentViewEnvelopeValue();
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494 | 43987 | jjdelcerro | PropertiesValue propertiesFiles = new PropertiesValue();
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495 | |||
496 | @SuppressWarnings("OverridableMethodCallInConstructor") |
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497 | public ProjectSymbolTable() {
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498 | 44129 | jjdelcerro | super(NAME);
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499 | 43987 | jjdelcerro | this.addFunction(new CurrentProjectFunction()); |
500 | this.addFunction(new FirstSelectedFeatureFunction()); |
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501 | 44129 | jjdelcerro | this.addFunction(new FirstLayerFeatureFunction()); |
502 | 43987 | jjdelcerro | this.addFunction(new ViewFunction()); |
503 | 44025 | jjdelcerro | this.addFunction(new ViewBBoxFunction()); |
504 | 43987 | jjdelcerro | this.addFunction(new PropertyFunction()); |
505 | 43997 | jjdelcerro | this.addFunction(new AreaFunction()); |
506 | this.addFunction(new PerimeterFunction()); |
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507 | 44035 | jjdelcerro | this.addFunction(new SavedPointFunction()); |
508 | 43987 | jjdelcerro | } |
509 | |||
510 | 43997 | jjdelcerro | private MapContext getMapContext(Feature feature) {
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511 | FeatureStore store = feature.getStore(); |
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512 | Project project = ProjectManager.getInstance().getCurrentProject(); |
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513 | project.getDocuments(ViewManager.TYPENAME); |
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514 | for (Document document : project.getDocuments(ViewManager.TYPENAME)) { |
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515 | ViewDocument view = (ViewDocument) document; |
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516 | MapContext mapContext = view.getMapContext(); |
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517 | FLayer layer = getLayer(mapContext, store); |
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518 | if (layer != null) { |
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519 | return mapContext;
|
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520 | } |
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521 | } |
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522 | return null; |
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523 | } |
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524 | |||
525 | private FLayer getLayer(MapContext mapContext, FeatureStore store) {
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526 | Iterator<FLayer> it = mapContext.deepiterator();
|
||
527 | while (it.hasNext()) {
|
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528 | FLayer layer = it.next(); |
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529 | if (layer instanceof FLyrVect) { |
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530 | FeatureStore layer_store = ((FLyrVect) layer).getFeatureStore(); |
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531 | if (layer_store == store) {
|
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532 | return layer;
|
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533 | } |
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534 | } |
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535 | } |
||
536 | return null; |
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537 | } |
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538 | |||
539 | private IProjection getProjection(Object[] args, int i) { |
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540 | Object value = args[i];
|
||
541 | if (value == null) { |
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542 | return null; |
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543 | } |
||
544 | if (value instanceof IProjection) { |
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545 | return (IProjection) value;
|
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546 | } |
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547 | String code = value.toString();
|
||
548 | return CRSFactory.getCRS(code);
|
||
549 | } |
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550 | |||
551 | private int getUnits(Object[] args, int i) { |
||
552 | Object value = args[i];
|
||
553 | if (value == null) { |
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554 | throw new IllegalArgumentException("Illegal unit value 'null'"); |
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555 | } |
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556 | if (value instanceof Number) { |
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557 | return ((Number) value).intValue(); |
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558 | } |
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559 | String name = value.toString();
|
||
560 | String[] names = MapContext.getAreaAbbr(); |
||
561 | for (int j = 0; j < names.length; j++) { |
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562 | if (name.equalsIgnoreCase(names[j])) {
|
||
563 | return j;
|
||
564 | } |
||
565 | } |
||
566 | names = MapContext.getAreaNames(); |
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567 | for (int j = 0; j < names.length; j++) { |
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568 | if (name.equalsIgnoreCase(names[j])) {
|
||
569 | return j;
|
||
570 | } |
||
571 | } |
||
572 | throw new IllegalArgumentException("Illegal unit name '" + name + "'"); |
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573 | } |
||
574 | |||
575 | 43987 | jjdelcerro | } |