Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/services/MapInfoService.java @ 2259:0dcb8326be08
Add a not-yet-looked-at CSV facet for Reference Curve.
flys-artifacts/trunk@3914 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 06 Feb 2012 10:15:41 +0000 |
parents | 8284c8fca840 |
children | 247f3e98a14b |
rev | line source |
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1 package de.intevation.flys.artifacts.services; |
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2 |
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3 import org.apache.log4j.Logger; |
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4 |
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5 import java.util.Map; |
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6 import java.util.HashMap; |
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7 |
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8 import org.w3c.dom.Document; |
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9 import org.w3c.dom.Node; |
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10 import org.w3c.dom.Element; |
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11 |
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12 import javax.xml.xpath.XPathConstants; |
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13 |
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14 import com.vividsolutions.jts.geom.Envelope; |
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15 |
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16 import de.intevation.artifacts.CallMeta; |
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17 import de.intevation.artifacts.GlobalContext; |
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18 |
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19 import de.intevation.artifacts.common.ArtifactNamespaceContext; |
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20 import de.intevation.artifacts.common.utils.Config; |
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21 import de.intevation.artifacts.common.utils.XMLUtils; |
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22 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator; |
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23 |
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24 import de.intevation.artifactdatabase.DefaultService; |
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25 |
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26 import de.intevation.flys.model.River; |
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27 |
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28 import de.intevation.flys.utils.GeometryUtils; |
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29 |
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30 /** |
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31 * This service provides information about the supported rivers by this |
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32 * application. |
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33 * |
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34 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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35 */ |
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36 public class MapInfoService extends DefaultService { |
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37 |
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38 /** XPath that points to the river.*/ |
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39 public static final String XPATH_RIVER = "/mapinfo/river/text()"; |
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40 |
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41 public static final String XPATH_RIVER_PROJECTION = |
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42 "/artifact-database/floodmap/river[@name=$river]/srid/@value"; |
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43 |
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44 public static final String XPATH_RIVER_BACKGROUND = |
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45 "/artifact-database/floodmap/river[@name='%RIVER%']/background-wms"; |
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46 |
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47 public static final String XPATH_RIVER_WMS = |
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48 "/artifact-database/floodmap/river[@name=$river]/river-wms/@url"; |
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49 |
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50 |
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51 /** The logger used in this service.*/ |
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52 private static Logger logger = Logger.getLogger(MapInfoService.class); |
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53 |
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54 |
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55 /** |
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56 * The default constructor. |
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57 */ |
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58 public MapInfoService() { |
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59 } |
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60 |
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61 protected static String getStringXPath( |
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62 String query, |
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63 Map<String, String> variables |
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64 ) { |
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65 return (String)XMLUtils.xpath( |
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66 Config.getConfig(), query, XPathConstants.STRING, |
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67 null, variables); |
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68 } |
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69 |
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70 protected static Node getNodeXPath( |
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71 String query, |
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72 Map<String, String> variables |
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73 ) { |
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74 return (Node)XMLUtils.xpath( |
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75 Config.getConfig(), query, XPathConstants.NODE, |
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76 null, variables); |
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77 } |
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78 |
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79 public Document process( |
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80 Document data, |
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81 GlobalContext globalContext, |
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82 CallMeta callMeta |
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83 ) { |
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84 logger.debug("MapInfoService.process"); |
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85 |
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86 Document result = XMLUtils.newDocument(); |
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87 ElementCreator cr = new ElementCreator(result, null, null); |
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88 |
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89 Element mapinfo = cr.create("mapinfo"); |
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90 result.appendChild(mapinfo); |
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91 |
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92 String river = extractRiver(data); |
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93 if (river == null || river.length() == 0) { |
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94 logger.warn("Cannot generate information: river is empty!"); |
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95 return result; |
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96 } |
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97 |
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98 Element root = cr.create("river"); |
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99 cr.addAttr(root, "name", river); |
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100 mapinfo.appendChild(root); |
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101 |
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102 Envelope env = GeometryUtils.getRiverBoundary(river); |
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103 if (env != null) { |
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104 String bounds = GeometryUtils.jtsBoundsToOLBounds(env); |
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105 logger.debug("River '" + river + "' bounds: " + bounds); |
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106 |
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107 Element bbox = cr.create("bbox"); |
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108 cr.addAttr(bbox, "value", bounds); |
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109 root.appendChild(bbox); |
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110 } |
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111 |
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112 Map<String, String> vars = new HashMap<String, String>(); |
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113 vars.put("river", river); |
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114 |
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115 String sridStr = getStringXPath(XPATH_RIVER_PROJECTION, vars); |
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116 |
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117 if (sridStr != null && sridStr.length() > 0) { |
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118 Element srid = cr.create("srid"); |
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119 cr.addAttr(srid, "value", sridStr); |
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120 root.appendChild(srid); |
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121 } |
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122 |
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123 Element back = (Element)getNodeXPath(XPATH_RIVER_BACKGROUND, vars); |
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124 if (back != null) { |
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125 Element background = cr.create("background-wms"); |
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126 cr.addAttr(background, "url", back.getAttribute("url")); |
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127 cr.addAttr(background, "layers", back.getAttribute("layers")); |
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128 root.appendChild(background); |
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129 } |
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130 |
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131 String wmsStr = getStringXPath(XPATH_RIVER_WMS, vars); |
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132 if (wmsStr != null && wmsStr.length() > 0) { |
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133 Element wms = cr.create("river-wms"); |
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134 cr.addAttr(wms, "url", wmsStr); |
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135 root.appendChild(wms); |
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136 } |
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137 |
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138 return result; |
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139 } |
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140 |
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141 |
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142 protected String extractRiver(Document data) { |
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143 return XMLUtils.xpathString( |
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144 data, XPATH_RIVER, ArtifactNamespaceContext.INSTANCE); |
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145 } |
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146 } |
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147 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |