root / tags / v1_0_2_Build_903 / libraries / libRemoteServices / src / org / gvsig / remoteClient / wcs / WCSClient.java @ 10704
History | View | Annotate | Download (6.86 KB)
1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* as published by the Free Software Foundation; either version 2
|
8 |
* of the License, or (at your option) any later version.
|
9 |
*
|
10 |
* This program is distributed in the hope that it will be useful,
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
* GNU General Public License for more details.
|
14 |
*
|
15 |
* You should have received a copy of the GNU General Public License
|
16 |
* along with this program; if not, write to the Free Software
|
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
18 |
*
|
19 |
* For more information, contact:
|
20 |
*
|
21 |
* Generalitat Valenciana
|
22 |
* Conselleria d'Infraestructures i Transport
|
23 |
* Av. Blasco Ib??ez, 50
|
24 |
* 46010 VALENCIA
|
25 |
* SPAIN
|
26 |
*
|
27 |
* +34 963862235
|
28 |
* gvsig@gva.es
|
29 |
* www.gvsig.gva.es
|
30 |
*
|
31 |
* or
|
32 |
*
|
33 |
* IVER T.I. S.A
|
34 |
* Salamanca 50
|
35 |
* 46005 Valencia
|
36 |
* Spain
|
37 |
*
|
38 |
* +34 963163400
|
39 |
* dac@iver.es
|
40 |
*/
|
41 |
package org.gvsig.remoteClient.wcs; |
42 |
|
43 |
import java.awt.geom.Rectangle2D; |
44 |
import java.io.File; |
45 |
import java.io.IOException; |
46 |
import java.net.ConnectException; |
47 |
import java.util.ArrayList; |
48 |
import java.util.Hashtable; |
49 |
import java.util.Iterator; |
50 |
|
51 |
import org.gvsig.remoteClient.exceptions.ServerErrorException; |
52 |
import org.gvsig.remoteClient.exceptions.WCSException; |
53 |
import org.gvsig.remoteClient.utils.BoundaryBox; |
54 |
import org.gvsig.remoteClient.wcs.wcs_1_0_0.WCSProtocolHandler1_0_0; |
55 |
import org.gvsig.remoteClient.wms.ICancellable; |
56 |
|
57 |
/**
|
58 |
* WCSClient managing the low-level comunication to the server. It is used
|
59 |
* as a bridge between a standard WCS server and other high-level clients.
|
60 |
* @author jaume dominguez faus - jaume.dominguez@iver.es
|
61 |
*
|
62 |
*/
|
63 |
public class WCSClient extends org.gvsig.remoteClient.RasterClient{ |
64 |
|
65 |
private WCSProtocolHandler handler;
|
66 |
private Hashtable layerPool; |
67 |
|
68 |
/**
|
69 |
* Constructor.
|
70 |
* the parameter host, indicates the WCS host to connect.
|
71 |
* @throws IOException
|
72 |
*
|
73 |
*/
|
74 |
public WCSClient(String host) throws ConnectException, IOException { |
75 |
setHost(host); |
76 |
try {
|
77 |
handler = WCSProtocolHandlerFactory.negotiate(host); |
78 |
handler.setHost(host); |
79 |
} catch(ConnectException conE) { |
80 |
throw conE;
|
81 |
} catch(IOException ioE) { |
82 |
throw ioE;
|
83 |
} catch(Exception e) { |
84 |
e.printStackTrace(); |
85 |
} |
86 |
} |
87 |
|
88 |
/**
|
89 |
* @param override
|
90 |
*
|
91 |
*/
|
92 |
public boolean connect(boolean override, ICancellable cancel) |
93 |
{ |
94 |
try {
|
95 |
if (handler == null) { |
96 |
if (getHost().trim().length() > 0) { |
97 |
handler = WCSProtocolHandlerFactory.negotiate(getHost()); |
98 |
handler.setHost(getHost()); |
99 |
} else {
|
100 |
// must to specify host first!!!!
|
101 |
return false; |
102 |
} |
103 |
} |
104 |
getCapabilities(null, override, cancel);
|
105 |
|
106 |
describeCoverage(null, override, cancel); //TODO falta posar el onlineresource del describe coverage |
107 |
return true; |
108 |
|
109 |
} catch (Exception e) { |
110 |
e.printStackTrace(); |
111 |
return false; |
112 |
} |
113 |
} |
114 |
|
115 |
/**
|
116 |
* Sends a GetCapabilities request using the properties contained by
|
117 |
* the status. If status is null, then it uses the default configuration.
|
118 |
* @param override
|
119 |
* @param WCSStatus, containing the status properties
|
120 |
*/
|
121 |
private void getCapabilities(WCSStatus status, boolean override, ICancellable cancel) { |
122 |
handler.getCapabilities(status, override, cancel); |
123 |
} |
124 |
|
125 |
/**
|
126 |
* Sends a DescribeCoverage request using the properties contained by
|
127 |
* the status.
|
128 |
* @param override, if true the cache is ignored
|
129 |
* @param WCSStatus, containing the status properties
|
130 |
*/
|
131 |
private void describeCoverage(WCSStatus status, boolean override, ICancellable cancel) { |
132 |
handler.describeCoverage(status, override, cancel); |
133 |
// check it was response or if we need to perform a specific DescribeCoverage for each coverage
|
134 |
Hashtable layers = handler.getLayers();
|
135 |
Iterator it = layers.keySet().iterator();
|
136 |
while (it.hasNext()) {
|
137 |
Object obj = layers.get(it.next());
|
138 |
if (obj instanceof CoverageOfferingBrief) { |
139 |
if (status == null) |
140 |
status = new WCSStatus();
|
141 |
status.setCoveraName( ((CoverageOfferingBrief) obj).getName()); |
142 |
handler.describeCoverage(status, override, cancel); |
143 |
} |
144 |
} |
145 |
|
146 |
layerPool = handler.getLayers(); |
147 |
} |
148 |
|
149 |
/* (non-Javadoc)
|
150 |
* @see org.gvsig.remoteClient.RemoteClient#close()
|
151 |
*/
|
152 |
public void close() { |
153 |
} |
154 |
|
155 |
/**
|
156 |
* Returns the title of the service. The title is a human-readable string format
|
157 |
* used to label the service connection.
|
158 |
* @return String
|
159 |
*/
|
160 |
public String getServiceTitle() { |
161 |
return handler.serviceInfo.title;
|
162 |
} |
163 |
|
164 |
/**
|
165 |
* Returns the service version (1.0.0, 1.1.0, ...).
|
166 |
* @return String
|
167 |
*/
|
168 |
public String getVersion() { |
169 |
return handler.getVersion();
|
170 |
} |
171 |
|
172 |
/**
|
173 |
* Returns a brief description of the service, it is a human-readable string.
|
174 |
* @return String
|
175 |
*/
|
176 |
public String getDescription() { |
177 |
return handler.serviceInfo.abstr;
|
178 |
} |
179 |
|
180 |
/**
|
181 |
*
|
182 |
* @return
|
183 |
*/
|
184 |
public ArrayList getFormats() { |
185 |
return handler.getFormats();
|
186 |
} |
187 |
|
188 |
/**
|
189 |
* Returns a hash table containing the WCSCoverage's produced at parse time using
|
190 |
* the coverage names as the Hashtable's keys
|
191 |
* @return Hashtable.
|
192 |
*/
|
193 |
public Hashtable getCoverageList() { |
194 |
return layerPool;
|
195 |
} |
196 |
|
197 |
/**
|
198 |
* Given a coverage name, it returns the coverage's title.
|
199 |
* @param coverageName
|
200 |
* @return String
|
201 |
*/
|
202 |
public String getLabel(String coverageName) { |
203 |
return ((WCSCoverage) layerPool.get(coverageName)).getTitle();
|
204 |
} |
205 |
|
206 |
/**
|
207 |
* Given a coverage name and the CRS name, it returns the extent defined by the
|
208 |
* server in the DescribeCoverage document.
|
209 |
*
|
210 |
* @param coverageName
|
211 |
* @param crs
|
212 |
* @return Rectangle2D
|
213 |
*/
|
214 |
public Rectangle2D getExtent(String coverageName, String crs) { |
215 |
BoundaryBox bbox = (BoundaryBox) ((WCSCoverage) layerPool.get(coverageName)).getBbox(crs);; |
216 |
if (bbox == null) return null; |
217 |
double xmin = bbox.getXmin();
|
218 |
double xmax = bbox.getXmax();
|
219 |
double ymin = bbox.getYmin();
|
220 |
double ymax = bbox.getYmax();
|
221 |
return new Rectangle2D.Double(xmin, ymin, xmax-xmin, ymax-ymin); |
222 |
} |
223 |
|
224 |
/**
|
225 |
* Sends the GetCoverage request according to the settings passed in the status
|
226 |
* argument.
|
227 |
* @param status
|
228 |
* @return File
|
229 |
* @throws ServerErrorException
|
230 |
* @throws WCSException
|
231 |
*/
|
232 |
public File getCoverage(WCSStatus status, ICancellable cancel) throws ServerErrorException, WCSException { |
233 |
return handler.getCoverage(status, cancel);
|
234 |
} |
235 |
} |
236 |
|