svn-gvsig-desktop / tags / v1_0_RELEASE / libraries / libRemoteServices / src / org / gvsig / remoteClient / wms / WMSProtocolHandler.java @ 9167
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1 | 3323 | ldiaz | package org.gvsig.remoteClient.wms; |
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2 | |||
3 | 3798 | ldiaz | import java.io.ByteArrayInputStream; |
4 | 3323 | ldiaz | import java.io.File; |
5 | 4222 | jaume | import java.io.FileInputStream; |
6 | 8765 | jjdelcerro | import java.io.FileReader; |
7 | 3377 | ldiaz | import java.io.IOException; |
8 | 3323 | ldiaz | import java.io.InputStream; |
9 | import java.net.URL; |
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10 | 3776 | jaume | import java.net.URLConnection; |
11 | 4222 | jaume | import java.nio.ByteBuffer; |
12 | import java.nio.channels.FileChannel; |
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13 | 3798 | ldiaz | import java.util.ArrayList; |
14 | 4222 | jaume | import java.util.HashMap; |
15 | 3323 | ldiaz | import java.util.TreeMap; |
16 | import java.util.Vector; |
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17 | 3776 | jaume | |
18 | 3516 | jaume | import org.gvsig.remoteClient.exceptions.ServerErrorException; |
19 | import org.gvsig.remoteClient.exceptions.WMSException; |
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20 | 3798 | ldiaz | import org.gvsig.remoteClient.utils.CapabilitiesTags; |
21 | import org.gvsig.remoteClient.utils.ExceptionTags; |
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22 | 3351 | ldiaz | import org.gvsig.remoteClient.utils.Utilities; |
23 | 3532 | ldiaz | import org.kxml2.io.KXmlParser; |
24 | 3798 | ldiaz | import org.xmlpull.v1.XmlPullParserException; |
25 | 3323 | ldiaz | |
26 | /**
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27 | * <p> Abstract class that represents handlers to comunicate via WMS protocol.
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28 | * </p>
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29 | *
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30 | */
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31 | public abstract class WMSProtocolHandler { |
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32 | 3483 | jaume | /**
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33 | 4500 | jaume | * Encoding used to parse different xml documents.
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34 | */
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35 | protected String encoding = "UTF-8"; |
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36 | /**
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37 | 3483 | jaume | * procotol handler name
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38 | */
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39 | 3323 | ldiaz | protected String name; |
40 | 3483 | jaume | /**
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41 | * protocol handler version
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42 | */
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43 | 3323 | ldiaz | protected String version; |
44 | 3483 | jaume | /**
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45 | * host of the WMS to connect
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46 | */
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47 | 3323 | ldiaz | protected String host; |
48 | 3483 | jaume | /**
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49 | 4222 | jaume | * port number of the comunication channel of the WMS to connect
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50 | 3483 | jaume | */
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51 | 3323 | ldiaz | protected String port; |
52 | 3483 | jaume | /**
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53 | * WMS metadata
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54 | */
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55 | 3323 | ldiaz | protected ServiceInformation serviceInfo;
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56 | public TreeMap layers; |
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57 | 3483 | jaume | public WMSLayer rootLayer;
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58 | 5343 | jaume | // public Vector srs;
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59 | 3341 | ldiaz | |
60 | 3323 | ldiaz | /**
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61 | * parses the data retrieved by the WMS in XML format.
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62 | * It will be mostly the WMS Capabilities, but the implementation
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63 | * will be placed in the handler implementing certain version of the protocol.
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64 | *
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65 | */
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66 | 3516 | jaume | public abstract void parse(File f) ; |
67 | 5239 | ldiaz | |
68 | /**
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69 | * returns the alfanumeric information of the layers at the specified point.
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70 | * the diference between the other getfeatureInfo method is that this will
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71 | * be implemented by each specific version because the XML from the server will be
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72 | * parsed and presented by a well known structure.
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73 | */
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74 | 3323 | ldiaz | |
75 | public String getName() { |
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76 | return name;
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77 | } |
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78 | |||
79 | public String getVersion() { |
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80 | return version;
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81 | } |
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82 | |||
83 | public ServiceInformation getServiceInformation() {
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84 | return serviceInfo;
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85 | } |
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86 | public String getHost () |
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87 | { |
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88 | return host;
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89 | } |
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90 | public void setHost(String _host) |
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91 | { |
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92 | host = _host; |
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93 | } |
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94 | public String getPort() |
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95 | { |
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96 | return port;
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97 | } |
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98 | public void setPort(String _port) |
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99 | { |
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100 | port = _port; |
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101 | } |
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102 | 4222 | jaume | |
103 | 3323 | ldiaz | |
104 | /**
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105 | 3853 | ldiaz | * <p>Builds a GetCapabilities request that is sent to the WMS
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106 | 5239 | ldiaz | * the response will be parse to extract the data needed by the
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107 | 3853 | ldiaz | * WMS client</p>
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108 | 4355 | jaume | * @param override, if true the previous downloaded data will be overridden
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109 | 3853 | ldiaz | */
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110 | 5409 | jaume | public void getCapabilities(WMSStatus status, boolean override, ICancellable cancel) |
111 | 3853 | ldiaz | { |
112 | 5239 | ldiaz | URL request = null; |
113 | 3853 | ldiaz | try
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114 | { |
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115 | 5239 | ldiaz | request = new URL(buildCapabilitiesRequest(status)); |
116 | } |
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117 | catch(Exception e) |
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118 | { |
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119 | e.printStackTrace(); |
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120 | } |
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121 | try
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122 | { |
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123 | 5539 | jaume | if (override)
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124 | 5409 | jaume | Utilities.removeURL(request);
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125 | File f = Utilities.downloadFile(request,"wms_capabilities.xml", cancel); |
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126 | if (f == null) |
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127 | return;
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128 | 5343 | jaume | clear(); |
129 | 5239 | ldiaz | parse(f); |
130 | 3853 | ldiaz | } catch(Exception e) |
131 | { |
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132 | //TODO
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133 | e.printStackTrace(); |
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134 | } |
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135 | } |
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136 | |||
137 | 5343 | jaume | private void clear() { |
138 | layers.clear(); |
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139 | serviceInfo.clear(); |
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140 | } |
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141 | |||
142 | /**
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143 | 3853 | ldiaz | * <p>It will send a GetFeatureInfo request to the WMS
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144 | * Parsing the response and redirecting the info to the WMS client</p>
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145 | 8765 | jjdelcerro | * TODO: return a stored file instead a String.
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146 | 3853 | ldiaz | */
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147 | 8765 | jjdelcerro | public String getFeatureInfo(WMSStatus status, int x, int y, int featureCount, ICancellable cancel) |
148 | 3853 | ldiaz | { |
149 | 8765 | jjdelcerro | |
150 | 3853 | ldiaz | URL request = null; |
151 | StringBuffer output = new StringBuffer(); |
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152 | String outputFormat = new String(); |
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153 | String ServiceException = "ServiceExceptionReport"; |
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154 | StringBuffer sb = new StringBuffer(); |
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155 | sb.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>");
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156 | try
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157 | { |
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158 | request = new URL(buildGetFeatureInfoRequest(status, x, y)); |
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159 | 8765 | jjdelcerro | outputFormat = request.openConnection().getContentType(); |
160 | File f = Utilities.downloadFile(request,"wms_feature_info.xml", cancel); |
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161 | if (f == null) |
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162 | return ""; |
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163 | 3853 | ldiaz | |
164 | 8765 | jjdelcerro | // byte[] buffer = new byte[1024*256];
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165 | // DataInputStream is = new DataInputStream();
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166 | // outputFormat = request.openConnection().getContentType();
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167 | // for (int i = f.read(buffer); i>0; i = is.read(buffer))
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168 | // {
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169 | // String str = new String(buffer,0,i);
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170 | // output.append(str);
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171 | // }
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172 | //
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173 | // is.close();
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174 | FileReader fReader = new FileReader(f); |
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175 | char[] buffer = new char[1024*256]; |
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176 | for (int i = fReader.read(buffer); i>0; i = fReader.read(buffer)) |
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177 | { |
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178 | String str = new String(buffer,0,i); |
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179 | output.append(str); |
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180 | } |
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181 | 3853 | ldiaz | if ( (outputFormat == null) || (outputFormat.indexOf("xml") != -1) |
182 | ||output.toString().toLowerCase().startsWith("<?xml")
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183 | ||(outputFormat.indexOf("gml") != -1)) |
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184 | { |
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185 | int tag;
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186 | KXmlParser kxmlParser = null;
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187 | kxmlParser = new KXmlParser();
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188 | 8765 | jjdelcerro | //kxmlParser.setInput(new StringReader(output.toString()));
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189 | kxmlParser.setInput(new FileReader(f)); |
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190 | 3853 | ldiaz | |
191 | 4222 | jaume | tag = kxmlParser.nextTag(); |
192 | if (kxmlParser.getName().compareTo(ServiceException)==0) |
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193 | { |
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194 | sb.append("<INFO>").append(parseException( output.toString().getBytes())).append("</INFO>"); |
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195 | return sb.toString();
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196 | } |
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197 | else if (kxmlParser.getName().compareToIgnoreCase("ERROR")==0) |
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198 | { |
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199 | return output.toString();
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200 | } |
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201 | else
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202 | { |
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203 | return output.toString();
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204 | } |
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205 | |||
206 | // while(tag != KXmlParser.END_DOCUMENT)
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207 | // {
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208 | // switch(tag)
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209 | // {
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210 | // case KXmlParser.START_TAG:
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211 | // if (kxmlParser.getName().compareTo(ServiceException)==0)
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212 | // {
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213 | // sb.append("<INFO>").append(parseException( output.toString().getBytes())).append("</INFO>");
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214 | // return sb.toString();
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215 | // }
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216 | // else if (kxmlParser.getName().compareToIgnoreCase("ERROR")==0)
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217 | // return output.toString();
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218 | // else
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219 | // sb.append("<" + kxmlParser.getName() + ">\n");
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220 | // break;
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221 | // case KXmlParser.END_TAG:
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222 | // sb.append("</" + kxmlParser.getName() + ">\n");
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223 | // break;
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224 | // case KXmlParser.TEXT:
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225 | // sb.append(kxmlParser.getText());
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226 | // break;
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227 | // }
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228 | // tag = kxmlParser.next();
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229 | // }
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230 | //return sb.toString();
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231 | 3853 | ldiaz | } |
232 | else
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233 | { |
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234 | 5838 | ldiaz | // sb.append("<INFO>").append("Info format not supported").append("</INFO>");
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235 | // return sb.toString();
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236 | 5428 | ldiaz | //Para que funcione con el GetFeatureInfo Viewer generico hay que devolver:
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237 | 5838 | ldiaz | return output.toString();
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238 | 3853 | ldiaz | } |
239 | } |
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240 | catch(XmlPullParserException parserEx)
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241 | { |
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242 | if (output.toString().toLowerCase().indexOf("xml") != -1) |
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243 | { |
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244 | return output.toString().trim();
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245 | } |
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246 | else
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247 | { |
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248 | 5536 | jaume | sb.append("<INFO>").append("Info format not supported").append("</INFO>"); |
249 | 3853 | ldiaz | return sb.toString();
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250 | } |
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251 | } |
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252 | catch(Exception e) |
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253 | { |
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254 | e.printStackTrace(); |
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255 | 5536 | jaume | sb.append("<INFO>").append("Info format not supported").append("</INFO>"); |
256 | 3853 | ldiaz | return sb.toString();
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257 | |||
258 | } |
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259 | } |
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260 | /**
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261 | 3323 | ldiaz | * <p>Builds a GetMap request that is sent to the WMS
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262 | * the response (image) will be redirect to the
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263 | * WMS client</p>
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264 | 3853 | ldiaz | */
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265 | 4222 | jaume | public byte[] _getMap(WMSStatus status) throws ServerErrorException, WMSException |
266 | 3351 | ldiaz | { |
267 | URL request = null; |
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268 | try
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269 | { |
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270 | //TODO:
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271 | //pass this buildXXXRequest to the WMSProtocolHandlerXXX: The request can depend on the WMS version.
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272 | request = new URL(buildMapRequest(status)); |
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273 | 3776 | jaume | URLConnection conn = request.openConnection();
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274 | System.out.println(request.toString());
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275 | String type = conn.getContentType();
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276 | 4222 | jaume | |
277 | 3853 | ldiaz | |
278 | 3516 | jaume | byte[] imageBytes = null; |
279 | 3377 | ldiaz | byte[] buffer = new byte[1024*256]; |
280 | 3776 | jaume | InputStream is = conn.getInputStream();
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281 | 3377 | ldiaz | int readed = 0; |
282 | |||
283 | for (int i = is.read(buffer); i>0; i = is.read(buffer)){ |
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284 | 3483 | jaume | // Creates a new buffer to contain the previous readed bytes and the next bunch of bytes
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285 | 3377 | ldiaz | byte[] buffered = new byte[readed+i]; |
286 | for (int j = 0; j < buffered.length; j++) { |
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287 | if (j<readed){
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288 | 3483 | jaume | // puts the previously downloaded bytes into the image buffer
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289 | 3377 | ldiaz | buffered[j] = imageBytes[j]; |
290 | } |
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291 | else {
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292 | 3483 | jaume | // appends the recently downloaded bytes to the image buffer.
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293 | 3377 | ldiaz | buffered[j] = buffer[j-readed]; |
294 | } |
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295 | } |
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296 | imageBytes = (byte[]) buffered.clone(); |
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297 | 3824 | ldiaz | readed += i; |
298 | 3377 | ldiaz | } |
299 | 3776 | jaume | |
300 | 3824 | ldiaz | if ((type !=null && !type.subSequence(0,5).equals("image")) |
301 | ||(Utilities.isTextData(imageBytes)))
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302 | { |
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303 | 3853 | ldiaz | WMSException wmsEx = null;
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304 | |||
305 | 3776 | jaume | String exceptionMessage = parseException(imageBytes);
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306 | 3853 | ldiaz | if (exceptionMessage==null) |
307 | 3824 | ldiaz | { |
308 | 3853 | ldiaz | String error = new String(imageBytes); |
309 | 3824 | ldiaz | int pos = error.indexOf("<?xml"); |
310 | if (pos!= -1) |
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311 | { |
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312 | String xml = error.substring(pos,error.length());
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313 | exceptionMessage = parseException(xml.getBytes()); |
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314 | 3853 | ldiaz | if (exceptionMessage == null) |
315 | exceptionMessage = new String(imageBytes); |
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316 | 3824 | ldiaz | } |
317 | } |
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318 | 4222 | jaume | wmsEx = new WMSException(exceptionMessage);
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319 | 3853 | ldiaz | wmsEx.setWMSMessage(new String(imageBytes)); |
320 | throw wmsEx;
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321 | 3776 | jaume | } |
322 | 3853 | ldiaz | return imageBytes;
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323 | 3351 | ldiaz | } |
324 | 3516 | jaume | catch(IOException e) |
325 | 3351 | ldiaz | { |
326 | 3405 | jaume | e.printStackTrace(); |
327 | 3516 | jaume | throw new ServerErrorException(); |
328 | 3351 | ldiaz | } |
329 | 3323 | ldiaz | } |
330 | 4222 | jaume | |
331 | 8765 | jjdelcerro | public File getLegendGraphic(WMSStatus status, String layerName, ICancellable cancel) throws ServerErrorException, WMSException |
332 | { |
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333 | URL request = null; |
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334 | try
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335 | { |
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336 | request = new URL(buildGetLegendGraphicRequest(status, layerName)); |
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337 | System.out.println(request);
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338 | File f = Utilities.downloadFile(request, "wmsGetLegendGraphic", cancel); |
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339 | if (f== null) |
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340 | return null; |
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341 | if (Utilities.isTextFile(f)) { |
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342 | FileInputStream fis = new FileInputStream(f); |
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343 | FileChannel fc = fis.getChannel();
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344 | byte[] data = new byte[(int)fc.size()]; |
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345 | ByteBuffer bb = ByteBuffer.wrap(data); |
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346 | fc.read(bb); |
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347 | |||
348 | WMSException wmsEx = null;
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349 | |||
350 | String exceptionMessage = parseException(data);
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351 | if (exceptionMessage==null) |
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352 | { |
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353 | String error = new String(data); |
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354 | int pos = error.indexOf("<?xml"); |
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355 | if (pos!= -1) |
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356 | { |
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357 | String xml = error.substring(pos,error.length());
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358 | exceptionMessage = parseException(xml.getBytes()); |
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359 | } |
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360 | if (exceptionMessage == null) |
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361 | exceptionMessage = new String(data); |
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362 | |||
363 | } |
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364 | wmsEx = new WMSException(exceptionMessage);
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365 | wmsEx.setWMSMessage(new String(data)); |
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366 | Utilities.removeURL(request);
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367 | throw wmsEx;
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368 | } |
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369 | return f;
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370 | } |
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371 | catch(IOException e) |
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372 | { |
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373 | e.printStackTrace(); |
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374 | throw new ServerErrorException(); |
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375 | } |
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376 | } |
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377 | |||
378 | 5409 | jaume | public File getMap(WMSStatus status, ICancellable cancel) throws ServerErrorException, WMSException |
379 | 4222 | jaume | { |
380 | URL request = null; |
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381 | try
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382 | { |
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383 | //TODO:
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384 | //pass this buildXXXRequest to the WMSProtocolHandlerXXX: The request can depend on the WMS version.
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385 | request = new URL(buildMapRequest(status)); |
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386 | |||
387 | 5409 | jaume | File f = Utilities.downloadFile(request, "wmsGetMap", cancel); |
388 | if (f== null) |
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389 | 5720 | ldiaz | return null; |
390 | 4222 | jaume | if (Utilities.isTextFile(f)) { |
391 | FileInputStream fis = new FileInputStream(f); |
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392 | FileChannel fc = fis.getChannel();
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393 | byte[] data = new byte[(int)fc.size()]; // fc.size returns the size of the file which backs the channel |
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394 | ByteBuffer bb = ByteBuffer.wrap(data); |
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395 | fc.read(bb); |
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396 | |||
397 | WMSException wmsEx = null;
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398 | |||
399 | String exceptionMessage = parseException(data);
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400 | if (exceptionMessage==null) |
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401 | { |
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402 | String error = new String(data); |
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403 | int pos = error.indexOf("<?xml"); |
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404 | if (pos!= -1) |
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405 | { |
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406 | String xml = error.substring(pos,error.length());
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407 | exceptionMessage = parseException(xml.getBytes()); |
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408 | // if (exceptionMessage == null)
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409 | // exceptionMessage = new String(data);
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410 | } |
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411 | if (exceptionMessage == null) |
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412 | exceptionMessage = new String(data); |
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413 | |||
414 | } |
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415 | wmsEx = new WMSException(exceptionMessage);
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416 | wmsEx.setWMSMessage(new String(data)); |
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417 | |||
418 | // Since it is an error file, It must be deleted from the cache
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419 | 5409 | jaume | Utilities.removeURL(request);
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420 | 4222 | jaume | throw wmsEx;
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421 | } |
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422 | return f;
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423 | } |
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424 | catch(IOException e) |
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425 | { |
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426 | e.printStackTrace(); |
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427 | throw new ServerErrorException(); |
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428 | } |
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429 | } |
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430 | |||
431 | |||
432 | 3798 | ldiaz | /* (non-Javadoc)
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433 | * @see org.gvsig.remoteClient.wms.WMSProtocolHandler#parseException(byte[])
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434 | 3516 | jaume | */
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435 | 3798 | ldiaz | protected String parseException(byte[] data) { |
436 | ArrayList errors = new ArrayList(); |
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437 | KXmlParser kxmlParser = new KXmlParser();
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438 | try
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439 | { |
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440 | 4500 | jaume | kxmlParser.setInput(new ByteArrayInputStream(data), encoding); |
441 | 3798 | ldiaz | kxmlParser.nextTag(); |
442 | int tag;
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443 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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444 | { |
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445 | kxmlParser.require(KXmlParser.START_TAG, null, ExceptionTags.EXCEPTION_ROOT);
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446 | tag = kxmlParser.nextTag(); |
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447 | while(tag != KXmlParser.END_DOCUMENT)
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448 | { |
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449 | switch(tag)
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450 | { |
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451 | case KXmlParser.START_TAG:
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452 | if (kxmlParser.getName().compareTo(ExceptionTags.SERVICE_EXCEPTION)==0){ |
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453 | String errorCode = kxmlParser.getAttributeValue("", ExceptionTags.CODE); |
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454 | errorCode = (errorCode != null) ? "["+errorCode+"] " : ""; |
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455 | String errorMessage = kxmlParser.nextText();
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456 | errors.add(errorCode+errorMessage); |
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457 | } |
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458 | break;
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459 | case KXmlParser.END_TAG:
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460 | break;
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461 | |||
462 | } |
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463 | tag = kxmlParser.nextTag(); |
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464 | } |
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465 | //kxmlParser.require(KXmlParser.END_DOCUMENT, null, null);
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466 | } |
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467 | } |
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468 | 3853 | ldiaz | catch(XmlPullParserException parser_ex){
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469 | 3798 | ldiaz | parser_ex.printStackTrace(); |
470 | } |
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471 | catch (IOException ioe) { |
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472 | ioe.printStackTrace(); |
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473 | } |
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474 | String message = errors.size()>0? "" : null; |
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475 | for (int i = 0; i < errors.size(); i++) { |
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476 | message += (String) errors.get(i)+"\n"; |
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477 | } |
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478 | return message;
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479 | } |
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480 | 3345 | ldiaz | /**
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481 | * Builds the GetCapabilitiesRequest according to the OGC WMS Specifications
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482 | 3687 | ldiaz | * without a VERSION, to get the highest version than a WMS supports.
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483 | 3345 | ldiaz | */
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484 | 3687 | ldiaz | public static String buildCapabilitiesSuitableVersionRequest(String _host, String _version) |
485 | { |
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486 | String req = new String(); |
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487 | String symbol = getSymbol(_host);
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488 | req = req + _host + symbol + "REQUEST=GetCapabilities&SERVICE=WMS&";
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489 | if((_version != null) && (_version.length()>0 )) |
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490 | { |
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491 | req += ("&VERSION=" + _version);
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492 | } |
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493 | req += ("&EXCEPTIONS=XML");
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494 | return req;
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495 | } |
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496 | 5239 | ldiaz | |
497 | 3687 | ldiaz | /**
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498 | * Builds the GetCapabilitiesRequest according to the OGC WMS Specifications
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499 | 4222 | jaume | * @param WMSStatus
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500 | 3687 | ldiaz | */
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501 | 5239 | ldiaz | private String buildCapabilitiesRequest(WMSStatus status) |
502 | 3345 | ldiaz | { |
503 | 4222 | jaume | StringBuffer req = new StringBuffer(); |
504 | String symbol = null; |
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505 | |||
506 | String onlineResource;
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507 | if (status == null || status.getOnlineResource() == null) |
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508 | onlineResource = getHost(); |
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509 | else
|
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510 | onlineResource = status.getOnlineResource(); |
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511 | symbol = getSymbol(onlineResource); |
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512 | |||
513 | req.append(onlineResource).append(symbol).append("REQUEST=GetCapabilities&SERVICE=WMS&");
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||
514 | req.append("VERSION=").append(getVersion()).append("&EXCEPTIONS=XML"); |
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515 | return req.toString();
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516 | 3345 | ldiaz | } |
517 | 4222 | jaume | |
518 | 3345 | ldiaz | /**
|
519 | 3351 | ldiaz | * Builds the GetFeatureInfoRequest according to the OGC WMS Specifications
|
520 | */
|
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521 | 5239 | ldiaz | protected String buildGetFeatureInfoRequest(WMSStatus status, int x, int y) |
522 | 3351 | ldiaz | { |
523 | 8765 | jjdelcerro | // TODO: pass by parameter the info output format?
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524 | 4222 | jaume | StringBuffer req = new StringBuffer(); |
525 | String symbol = null; |
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526 | 3604 | jaume | |
527 | 4222 | jaume | String onlineResource;
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528 | if (status.getOnlineResource() == null) |
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529 | onlineResource = getHost(); |
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530 | else
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531 | onlineResource = status.getOnlineResource(); |
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532 | symbol = getSymbol(onlineResource); |
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533 | 3604 | jaume | |
534 | 4222 | jaume | req.append(onlineResource).append(symbol).append("REQUEST=GetFeatureInfo&SERVICE=WMS&");
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535 | req.append("QUERY_LAYERS=").append(Utilities.Vector2CS(status.getLayerNames())); |
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536 | req.append("&VERSION=").append(getVersion()).append("&INFO_FORMAT=application/vnd.ogc.gml&"); |
||
537 | req.append(getPartialQuery(status)).append("&x="+x + "&y="+y); |
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538 | 5820 | ldiaz | //this parameter sets the max number of features per layer to be returned.
|
539 | //we set it to avoid the bug in mapserver that takes this number like max number of total features.
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||
540 | req.append("&FEATURE_COUNT=10000");
|
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541 | 3351 | ldiaz | if (status.getExceptionFormat() != null) { |
542 | 4222 | jaume | req.append("&EXCEPTIONS=" + status.getExceptionFormat());
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543 | 3351 | ldiaz | } else {
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544 | 4222 | jaume | req.append("&EXCEPTIONS=XML");
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545 | 3351 | ldiaz | } |
546 | 4222 | jaume | return req.toString().replaceAll(" ", "%20"); |
547 | 3351 | ldiaz | } |
548 | 3655 | jaume | |
549 | 3351 | ldiaz | /**
|
550 | 3345 | ldiaz | * Builds the GetMapRequest according to the OGC WMS Specifications
|
551 | */
|
||
552 | 8765 | jjdelcerro | private String buildGetLegendGraphicRequest(WMSStatus status, String layerName) |
553 | { |
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554 | //TODO: pass by parameter the legend output format?
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||
555 | StringBuffer req = new StringBuffer(); |
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556 | String symbol = null; |
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557 | String onlineResource = null; |
||
558 | |||
559 | if (status.getOnlineResource() == null) |
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560 | onlineResource = getHost(); |
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561 | else
|
||
562 | onlineResource = status.getOnlineResource(); |
||
563 | symbol = getSymbol(onlineResource); |
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564 | |||
565 | req.append(onlineResource + symbol + "REQUEST=GetLegendGraphic&SERVICE=WMS&VERSION=").append(getVersion()).append("&"); |
||
566 | req.append("LAYER=" + layerName)
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567 | .append("&FORMAT=image/png");
|
||
568 | return req.toString().replaceAll(" ", "%20"); |
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569 | } |
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570 | |||
571 | /**
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||
572 | * Builds the GetMapRequest according to the OGC WMS Specifications
|
||
573 | */
|
||
574 | 3345 | ldiaz | private String buildMapRequest(WMSStatus status) |
575 | 3522 | ldiaz | { |
576 | 4222 | jaume | StringBuffer req = new StringBuffer(); |
577 | String symbol = null; |
||
578 | String onlineResource = null; |
||
579 | |||
580 | if (status.getOnlineResource() == null) |
||
581 | onlineResource = getHost(); |
||
582 | else
|
||
583 | onlineResource = status.getOnlineResource(); |
||
584 | symbol = getSymbol(onlineResource); |
||
585 | |||
586 | req.append(onlineResource + symbol + "REQUEST=GetMap&SERVICE=WMS&VERSION=").append(getVersion()).append("&"); |
||
587 | req.append(getPartialQuery(status)); |
||
588 | 4924 | jaume | // if (status.getExceptionFormat() != null) {
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589 | // req.append("&EXCEPTIONS=" + status.getExceptionFormat());
|
||
590 | // } else {
|
||
591 | // req.append("&EXCEPTIONS=XML");
|
||
592 | // }
|
||
593 | 4222 | jaume | return req.toString().replaceAll(" ", "%20"); |
594 | 3345 | ldiaz | } |
595 | 3655 | jaume | |
596 | /**
|
||
597 | * Just for not repeat code. Gets the correct separator according to the server URL
|
||
598 | * @param h
|
||
599 | * @return
|
||
600 | */
|
||
601 | 3687 | ldiaz | private static String getSymbol(String h) { |
602 | 3655 | jaume | String symbol;
|
603 | if (h.indexOf("?")==-1) |
||
604 | symbol = "?";
|
||
605 | else if (h.indexOf("?")!=h.length()-1) |
||
606 | symbol = "&";
|
||
607 | else
|
||
608 | symbol = "";
|
||
609 | return symbol;
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||
610 | } |
||
611 | 3345 | ldiaz | |
612 | /**
|
||
613 | * Gets the part of the OGC request that share GetMap and GetFeatureInfo
|
||
614 | * @return String request
|
||
615 | */
|
||
616 | public String getPartialQuery(WMSStatus status) |
||
617 | 3351 | ldiaz | { |
618 | 4222 | jaume | StringBuffer req = new StringBuffer(); |
619 | req.append("LAYERS=" + Utilities.Vector2CS(status.getLayerNames())) |
||
620 | .append("&SRS=" + status.getSrs())
|
||
621 | .append("&BBOX=" + status.getExtent().getMinX()+ "," ) |
||
622 | .append(status.getExtent().getMinY()+ ",")
|
||
623 | .append(status.getExtent().getMaxX()+ ",")
|
||
624 | .append(status.getExtent().getMaxY()) |
||
625 | .append("&WIDTH=" + status.getWidth())
|
||
626 | .append("&HEIGHT=" + status.getHeight())
|
||
627 | .append("&FORMAT=" + status.getFormat())
|
||
628 | .append("&STYLES=");
|
||
629 | 3776 | jaume | Vector v = status.getStyles();
|
630 | 3777 | jaume | if (v!=null && v.size()>0) |
631 | 4222 | jaume | req.append(Utilities.Vector2CS(v));
|
632 | 3776 | jaume | v = status.getDimensions(); |
633 | 3777 | jaume | if (v!=null && v.size()>0) |
634 | 4222 | jaume | req.append("&" + Utilities.Vector2URLParamString(v)); |
635 | 3592 | jaume | if (status.getTransparency()) {
|
636 | 4222 | jaume | req.append("&TRANSPARENT=TRUE");
|
637 | 3592 | jaume | } |
638 | 4222 | jaume | return req.toString();
|
639 | 3345 | ldiaz | } |
640 | |||
641 | |||
642 | |||
643 | 3323 | ldiaz | public void close() { |
644 | // your code here
|
||
645 | } |
||
646 | |||
647 | /**
|
||
648 | * Inner class that represents the description of the WMS metadata.
|
||
649 | * The first part of the capabilities will return the service information
|
||
650 | * from the WMS, this class will hold this information.
|
||
651 | *
|
||
652 | */
|
||
653 | public class ServiceInformation { |
||
654 | |||
655 | 4222 | jaume | public String online_resource = null; |
656 | /*public String map_online_resource = null;
|
||
657 | public String feature_online_resource = null;*/
|
||
658 | 3323 | ldiaz | public String version; |
659 | public String name; |
||
660 | public String scope; |
||
661 | public String title; |
||
662 | public String abstr; |
||
663 | public String keywords; |
||
664 | public String fees; |
||
665 | public String operationsInfo; |
||
666 | public String personname; |
||
667 | public String organization; |
||
668 | public String function; |
||
669 | public String addresstype; |
||
670 | public String address; |
||
671 | public String place; |
||
672 | public String province; |
||
673 | public String postcode; |
||
674 | public String country; |
||
675 | public String phone; |
||
676 | public String fax; |
||
677 | public String email; |
||
678 | public Vector formats; |
||
679 | 4222 | jaume | public HashMap operations; // operations that WMS supports |
680 | 3323 | ldiaz | |
681 | public ServiceInformation()
|
||
682 | 4222 | jaume | { |
683 | 3323 | ldiaz | version = new String(); |
684 | name = new String(); |
||
685 | scope = new String(); |
||
686 | title = new String(); |
||
687 | abstr = new String(); |
||
688 | keywords = new String(); |
||
689 | fees = new String(); |
||
690 | operationsInfo = new String(); |
||
691 | personname = new String(); |
||
692 | organization = new String(); |
||
693 | function = new String(); |
||
694 | addresstype = new String(); |
||
695 | address = new String(); |
||
696 | place = new String(); |
||
697 | province = new String(); |
||
698 | postcode = new String(); |
||
699 | country = new String(); |
||
700 | phone = new String(); |
||
701 | fax = new String(); |
||
702 | email = new String(); |
||
703 | formats = new Vector(); |
||
704 | 4222 | jaume | operations = new HashMap(); |
705 | 3323 | ldiaz | } |
706 | 3798 | ldiaz | public boolean isQueryable() |
707 | { |
||
708 | 4222 | jaume | if (operations.keySet().contains( CapabilitiesTags.GETFEATUREINFO ))
|
709 | 3798 | ldiaz | return true; |
710 | else
|
||
711 | return false; |
||
712 | } |
||
713 | 8765 | jjdelcerro | public boolean hasLegendGraphic() |
714 | { |
||
715 | if (operations.keySet().contains( CapabilitiesTags.GETLEGENDGRAPHIC))
|
||
716 | return true; |
||
717 | else
|
||
718 | return false; |
||
719 | } |
||
720 | 5343 | jaume | public void clear() { |
721 | version = new String(); |
||
722 | name = new String(); |
||
723 | scope = new String(); |
||
724 | title = new String(); |
||
725 | abstr = new String(); |
||
726 | keywords = new String(); |
||
727 | fees = new String(); |
||
728 | operationsInfo = new String(); |
||
729 | personname = new String(); |
||
730 | organization = new String(); |
||
731 | function = new String(); |
||
732 | addresstype = new String(); |
||
733 | address = new String(); |
||
734 | place = new String(); |
||
735 | province = new String(); |
||
736 | postcode = new String(); |
||
737 | country = new String(); |
||
738 | phone = new String(); |
||
739 | fax = new String(); |
||
740 | email = new String(); |
||
741 | formats = new Vector(); |
||
742 | operations = new HashMap(); |
||
743 | } |
||
744 | 5239 | ldiaz | } |
745 | 3323 | ldiaz | } |