svn-gvsig-desktop / tags / v1_0_1_RELEASE / libraries / libRemoteServices / src / org / gvsig / remoteClient / wcs / WCSClient.java @ 9531
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1 | 3483 | jaume | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | *
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19 | * For more information, contact:
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20 | *
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21 | * Generalitat Valenciana
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22 | * Conselleria d'Infraestructures i Transport
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23 | * Av. Blasco Ib??ez, 50
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24 | * 46010 VALENCIA
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25 | * SPAIN
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26 | *
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27 | * +34 963862235
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28 | * gvsig@gva.es
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29 | * www.gvsig.gva.es
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30 | *
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31 | * or
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32 | *
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33 | * IVER T.I. S.A
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34 | * Salamanca 50
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35 | * 46005 Valencia
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36 | * Spain
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37 | *
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38 | * +34 963163400
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39 | * dac@iver.es
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40 | */
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41 | package org.gvsig.remoteClient.wcs; |
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42 | |||
43 | 4427 | jaume | import java.awt.geom.Rectangle2D; |
44 | 4493 | jaume | import java.io.File; |
45 | 4293 | jaume | import java.io.IOException; |
46 | import java.net.ConnectException; |
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47 | 4931 | jaume | import java.util.ArrayList; |
48 | 4427 | jaume | import java.util.Hashtable; |
49 | 7010 | jaume | import java.util.Iterator; |
50 | 4293 | jaume | |
51 | 4493 | jaume | import org.gvsig.remoteClient.exceptions.ServerErrorException; |
52 | import org.gvsig.remoteClient.exceptions.WCSException; |
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53 | 4427 | jaume | import org.gvsig.remoteClient.utils.BoundaryBox; |
54 | 7010 | jaume | import org.gvsig.remoteClient.wcs.wcs_1_0_0.WCSProtocolHandler1_0_0; |
55 | 5409 | jaume | import org.gvsig.remoteClient.wms.ICancellable; |
56 | 3483 | jaume | |
57 | 4924 | jaume | /**
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58 | * WCSClient managing the low-level comunication to the server. It is used
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59 | 6422 | jaume | * as a bridge between a standard WCS server and other high-level clients.
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60 | 4924 | jaume | * @author jaume dominguez faus - jaume.dominguez@iver.es
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61 | *
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62 | */
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63 | 3483 | jaume | public class WCSClient extends org.gvsig.remoteClient.RasterClient{ |
64 | |||
65 | private WCSProtocolHandler handler;
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66 | 6422 | jaume | private Hashtable layerPool; |
67 | |||
68 | 3483 | jaume | /**
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69 | * Constructor.
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70 | * the parameter host, indicates the WCS host to connect.
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71 | 6422 | jaume | * @throws IOException
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72 | 3483 | jaume | *
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73 | */
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74 | 6442 | jaume | public WCSClient(String host) throws ConnectException, IOException { |
75 | 3483 | jaume | setHost(host); |
76 | 6422 | jaume | try {
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77 | 4293 | jaume | handler = WCSProtocolHandlerFactory.negotiate(host); |
78 | 6422 | jaume | handler.setHost(host); |
79 | 4293 | jaume | } catch(ConnectException conE) { |
80 | 6422 | jaume | throw conE;
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81 | 4293 | jaume | } catch(IOException ioE) { |
82 | 6422 | jaume | throw ioE;
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83 | 4293 | jaume | } catch(Exception e) { |
84 | 6422 | jaume | e.printStackTrace(); |
85 | } |
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86 | 3483 | jaume | } |
87 | 6422 | jaume | |
88 | 3483 | jaume | /**
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89 | 9048 | jaume | * @param override
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90 | 6422 | jaume | *
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91 | 3483 | jaume | */
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92 | 9048 | jaume | public boolean connect(boolean override, ICancellable cancel) |
93 | 3483 | jaume | { |
94 | try {
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95 | 4293 | jaume | if (handler == null) { |
96 | 6422 | jaume | if (getHost().trim().length() > 0) { |
97 | 4427 | jaume | handler = WCSProtocolHandlerFactory.negotiate(getHost()); |
98 | 3483 | jaume | handler.setHost(getHost()); |
99 | 4293 | jaume | } else {
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100 | 4427 | jaume | // must to specify host first!!!!
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101 | 3483 | jaume | return false; |
102 | } |
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103 | } |
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104 | 9048 | jaume | getCapabilities(null, override, cancel);
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105 | 6422 | jaume | |
106 | 9048 | jaume | describeCoverage(null, override, cancel); //TODO falta posar el onlineresource del describe coverage |
107 | 3483 | jaume | return true; |
108 | 6422 | jaume | |
109 | 3483 | jaume | } catch (Exception e) { |
110 | e.printStackTrace(); |
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111 | return false; |
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112 | } |
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113 | } |
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114 | 6422 | jaume | |
115 | 3483 | jaume | /**
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116 | 4924 | jaume | * Sends a GetCapabilities request using the properties contained by
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117 | * the status. If status is null, then it uses the default configuration.
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118 | 9048 | jaume | * @param override
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119 | 4924 | jaume | * @param WCSStatus, containing the status properties
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120 | 3483 | jaume | */
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121 | 9048 | jaume | private void getCapabilities(WCSStatus status, boolean override, ICancellable cancel) { |
122 | handler.getCapabilities(status, override, cancel); |
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123 | 3483 | jaume | } |
124 | 6422 | jaume | |
125 | 4427 | jaume | /**
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126 | 4924 | jaume | * Sends a DescribeCoverage request using the properties contained by
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127 | * the status.
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128 | 9048 | jaume | * @param override, if true the cache is ignored
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129 | 4924 | jaume | * @param WCSStatus, containing the status properties
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130 | 4427 | jaume | */
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131 | 9048 | jaume | private void describeCoverage(WCSStatus status, boolean override, ICancellable cancel) { |
132 | handler.describeCoverage(status, override, cancel); |
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133 | 7010 | jaume | // check it was response or if we need to perform a specific DescribeCoverage for each coverage
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134 | Hashtable layers = handler.getLayers();
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135 | Iterator it = layers.keySet().iterator();
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136 | while (it.hasNext()) {
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137 | Object obj = layers.get(it.next());
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138 | if (obj instanceof CoverageOfferingBrief) { |
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139 | if (status == null) |
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140 | status = new WCSStatus();
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141 | status.setCoveraName( ((CoverageOfferingBrief) obj).getName()); |
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142 | 9048 | jaume | handler.describeCoverage(status, override, cancel); |
143 | 7010 | jaume | } |
144 | } |
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145 | |||
146 | 4427 | jaume | layerPool = handler.getLayers(); |
147 | } |
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148 | 3483 | jaume | |
149 | /* (non-Javadoc)
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150 | * @see org.gvsig.remoteClient.RemoteClient#close()
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151 | */
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152 | public void close() { |
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153 | } |
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154 | 4427 | jaume | |
155 | 4924 | jaume | /**
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156 | * Returns the title of the service. The title is a human-readable string format
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157 | * used to label the service connection.
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158 | * @return String
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159 | */
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160 | 4427 | jaume | public String getServiceTitle() { |
161 | return handler.serviceInfo.title;
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162 | } |
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163 | |||
164 | 4924 | jaume | /**
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165 | * Returns the service version (1.0.0, 1.1.0, ...).
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166 | * @return String
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167 | */
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168 | 4427 | jaume | public String getVersion() { |
169 | return handler.getVersion();
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170 | } |
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171 | |||
172 | 4924 | jaume | /**
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173 | * Returns a brief description of the service, it is a human-readable string.
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174 | * @return String
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175 | */
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176 | 4427 | jaume | public String getDescription() { |
177 | return handler.serviceInfo.abstr;
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178 | } |
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179 | |||
180 | 4924 | jaume | /**
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181 | 6422 | jaume | *
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182 | 4931 | jaume | * @return
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183 | */
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184 | public ArrayList getFormats() { |
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185 | return handler.getFormats();
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186 | } |
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187 | |||
188 | /**
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189 | 4924 | jaume | * Returns a hash table containing the WCSCoverage's produced at parse time using
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190 | * the coverage names as the Hashtable's keys
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191 | * @return Hashtable.
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192 | */
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193 | 4427 | jaume | public Hashtable getCoverageList() { |
194 | return layerPool;
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195 | } |
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196 | |||
197 | 4924 | jaume | /**
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198 | * Given a coverage name, it returns the coverage's title.
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199 | * @param coverageName
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200 | * @return String
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201 | */
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202 | 4427 | jaume | public String getLabel(String coverageName) { |
203 | return ((WCSCoverage) layerPool.get(coverageName)).getTitle();
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204 | } |
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205 | |||
206 | 4924 | jaume | /**
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207 | * Given a coverage name and the CRS name, it returns the extent defined by the
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208 | * server in the DescribeCoverage document.
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209 | 6422 | jaume | *
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210 | 4924 | jaume | * @param coverageName
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211 | * @param crs
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212 | * @return Rectangle2D
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213 | */
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214 | public Rectangle2D getExtent(String coverageName, String crs) { |
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215 | BoundaryBox bbox = (BoundaryBox) ((WCSCoverage) layerPool.get(coverageName)).getBbox(crs);; |
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216 | 4427 | jaume | if (bbox == null) return null; |
217 | double xmin = bbox.getXmin();
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218 | double xmax = bbox.getXmax();
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219 | double ymin = bbox.getYmin();
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220 | double ymax = bbox.getYmax();
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221 | return new Rectangle2D.Double(xmin, ymin, xmax-xmin, ymax-ymin); |
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222 | } |
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223 | 4493 | jaume | |
224 | 4924 | jaume | /**
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225 | * Sends the GetCoverage request according to the settings passed in the status
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226 | * argument.
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227 | * @param status
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228 | * @return File
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229 | * @throws ServerErrorException
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230 | * @throws WCSException
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231 | */
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232 | 5409 | jaume | public File getCoverage(WCSStatus status, ICancellable cancel) throws ServerErrorException, WCSException { |
233 | return handler.getCoverage(status, cancel);
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234 | 4493 | jaume | } |
235 | 3483 | jaume | } |