svn-gvsig-desktop / trunk / libraries / libRemoteServices / src / org / gvsig / remoteClient / wms / wms_1_1_0 / WMSProtocolHandler1_1_0.java @ 4493
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1 | 3687 | ldiaz | |
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2 | package org.gvsig.remoteClient.wms.wms_1_1_0; |
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3 | |||
4 | import java.io.ByteArrayInputStream; |
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5 | import java.io.File; |
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6 | import java.io.FileNotFoundException; |
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7 | import java.io.FileReader; |
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8 | import java.io.IOException; |
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9 | import java.io.InputStreamReader; |
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10 | import java.io.Reader; |
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11 | import java.util.ArrayList; |
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12 | import java.util.TreeMap; |
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13 | import org.gvsig.remoteClient.utils.CapabilitiesTags; |
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14 | import org.gvsig.remoteClient.utils.ExceptionTags; |
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15 | import org.kxml2.io.KXmlParser; |
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16 | import org.xmlpull.v1.XmlPullParserException; |
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17 | |||
18 | /**
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19 | * <p>
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20 | * Describes the handler to comunicate to a WMS 1.1.0
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21 | * </p>
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22 | */
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23 | 4222 | jaume | public class WMSProtocolHandler1_1_0 extends org.gvsig.remoteClient.wms.WMSProtocolHandler |
24 | { |
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25 | 3687 | ldiaz | private WMSLayer1_1_0 fakeRootLayer;
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26 | |||
27 | public WMSProtocolHandler1_1_0()
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28 | { |
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29 | this.version = "1.1.0"; |
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30 | this.name = "WMS1.1.0"; |
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31 | this.serviceInfo = new ServiceInformation(); |
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32 | this.layers = new TreeMap(); |
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33 | } |
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34 | |||
35 | //------------------------------------------------------------------------------
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36 | // Parsing methods....
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37 | //------------------------------------------------------------------------------
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38 | /**
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39 | * <p>Parse the xml data retrieved from the WMS, it will parse the WMS Capabilities</p>
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40 | *
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41 | */
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42 | public void parse(File f) |
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43 | { |
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44 | FileReader reader = null; |
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45 | try
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46 | { |
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47 | reader = new FileReader(f); |
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48 | } |
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49 | catch(FileNotFoundException ex) { |
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50 | ex.printStackTrace(); |
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51 | } |
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52 | |||
53 | int tag;
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54 | KXmlParser kxmlParser = null;
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55 | kxmlParser = new KXmlParser();
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56 | try
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57 | { |
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58 | kxmlParser.setInput(reader); |
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59 | kxmlParser.nextTag(); |
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60 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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61 | { |
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62 | kxmlParser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITIES_ROOT1_1_1);
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63 | tag = kxmlParser.nextTag(); |
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64 | while(tag != KXmlParser.END_DOCUMENT)
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65 | { |
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66 | switch(tag)
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67 | { |
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68 | |||
69 | case KXmlParser.START_TAG:
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70 | if (kxmlParser.getName().compareTo(CapabilitiesTags.SERVICE )==0) |
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71 | { |
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72 | parseServiceTag(kxmlParser); |
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73 | } |
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74 | else if (kxmlParser.getName().compareTo(CapabilitiesTags.CAPABILITY)==0) |
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75 | { |
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76 | parseCapabilityTag(kxmlParser); |
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77 | } |
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78 | break;
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79 | case KXmlParser.END_TAG:
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80 | break;
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81 | case KXmlParser.TEXT:
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82 | 4222 | jaume | |
83 | 3687 | ldiaz | break;
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84 | } |
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85 | tag = kxmlParser.next(); |
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86 | } |
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87 | 4222 | jaume | |
88 | 3687 | ldiaz | kxmlParser.require(KXmlParser.END_DOCUMENT, null, null); |
89 | } |
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90 | } |
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91 | catch(XmlPullParserException parser_ex){
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92 | parser_ex.printStackTrace(); |
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93 | } |
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94 | catch (IOException ioe) { |
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95 | ioe.printStackTrace(); |
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96 | } finally {
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97 | |||
98 | } |
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99 | } |
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100 | |||
101 | /**
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102 | * <p>Parses the Service Information </p>
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103 | */
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104 | private void parseServiceTag(KXmlParser parser) throws IOException, XmlPullParserException |
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105 | { |
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106 | int currentTag;
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107 | boolean end = false; |
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108 | |||
109 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.SERVICE);
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110 | currentTag = parser.next(); |
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111 | |||
112 | while (!end)
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113 | { |
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114 | switch(currentTag)
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115 | { |
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116 | case KXmlParser.START_TAG:
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117 | if (parser.getName().compareTo(CapabilitiesTags.NAME)==0) |
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118 | { |
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119 | serviceInfo.name = parser.nextText(); |
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120 | } |
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121 | else if (parser.getName().compareTo(CapabilitiesTags.TITLE)==0) |
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122 | { |
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123 | serviceInfo.title = parser.nextText(); |
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124 | } |
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125 | else if (parser.getName().compareTo(CapabilitiesTags.ABSTRACT)==0) |
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126 | { |
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127 | serviceInfo.abstr = parser.nextText(); |
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128 | } |
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129 | 4222 | jaume | else if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
130 | { |
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131 | String value = null; |
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132 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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133 | if (value != null){ |
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134 | serviceInfo.online_resource = value; |
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135 | } |
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136 | } |
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137 | 3687 | ldiaz | else if ((parser.getName().compareTo(CapabilitiesTags.KEYWORDLIST)==0) || |
138 | (parser.getName().compareTo(CapabilitiesTags.CONTACTINFORMATION)==0))
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139 | { |
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140 | parser.skipSubTree(); |
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141 | } |
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142 | break;
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143 | case KXmlParser.END_TAG:
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144 | if (parser.getName().compareTo(CapabilitiesTags.SERVICE) == 0) |
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145 | end = true;
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146 | break;
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147 | case KXmlParser.TEXT:
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148 | break;
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149 | } |
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150 | if (!end)
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151 | currentTag = parser.next(); |
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152 | } |
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153 | parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.SERVICE);
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154 | } |
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155 | 4493 | jaume | |
156 | 3687 | ldiaz | /**
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157 | * <p>Parses the Capability Tag </p>
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158 | */
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159 | private void parseCapabilityTag(KXmlParser parser) throws IOException, XmlPullParserException |
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160 | { |
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161 | int currentTag;
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162 | boolean end = false; |
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163 | |||
164 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITY);
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165 | currentTag = parser.next(); |
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166 | |||
167 | while (!end)
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168 | { |
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169 | switch(currentTag)
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170 | { |
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171 | case KXmlParser.START_TAG:
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172 | if (parser.getName().compareTo(CapabilitiesTags.REQUEST)==0) |
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173 | { |
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174 | parseRequestTag(parser); |
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175 | } |
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176 | else if (parser.getName().compareTo(CapabilitiesTags.EXCEPTION)==0) |
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177 | { |
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178 | 4222 | jaume | // TODO:
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179 | // add the exception formats supported.
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180 | 3687 | ldiaz | } |
181 | else if (parser.getName().compareTo(CapabilitiesTags.LAYER)==0) |
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182 | { |
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183 | WMSLayer1_1_0 lyr = new WMSLayer1_1_0();
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184 | if (rootLayer == null) |
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185 | rootLayer = lyr; |
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186 | else {
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187 | // Handles when there is no general root layer, will use
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188 | // a fake non-queryable one.
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189 | if (!rootLayer.equals(getFakeRootLayer())){
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190 | WMSLayer1_1_0 aux = (WMSLayer1_1_0) rootLayer; |
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191 | rootLayer = getFakeRootLayer(); |
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192 | rootLayer.getChildren().add(aux); |
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193 | } |
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194 | rootLayer.getChildren().add(lyr); |
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195 | } |
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196 | lyr.parse(parser, layers); |
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197 | |||
198 | if (lyr.getName()!=null) |
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199 | 4222 | jaume | layers.put(lyr.getName(), lyr); |
200 | 3687 | ldiaz | } |
201 | else if ((parser.getName().compareTo(CapabilitiesTags.VENDORSPECIFICCAPABILITIES)==0) || |
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202 | (parser.getName().compareTo(CapabilitiesTags.USERDEFINEDSYMBOLIZATION )==0))
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203 | |||
204 | { |
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205 | parser.skipSubTree(); |
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206 | } |
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207 | break;
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208 | case KXmlParser.END_TAG:
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209 | if (parser.getName().compareTo(CapabilitiesTags.CAPABILITY) == 0) |
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210 | end = true;
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211 | break;
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212 | case KXmlParser.TEXT:
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213 | break;
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214 | } |
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215 | 4222 | jaume | if (!end)
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216 | 3687 | ldiaz | currentTag = parser.next(); |
217 | } |
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218 | //parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.CAPABILITY);
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219 | } |
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220 | |||
221 | /**
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222 | * <p>Parses the Request tag </p>
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223 | */
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224 | private void parseRequestTag(KXmlParser parser) throws IOException, XmlPullParserException |
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225 | { |
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226 | int currentTag;
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227 | boolean end = false; |
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228 | |||
229 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.REQUEST);
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230 | currentTag = parser.next(); |
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231 | |||
232 | while (!end)
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233 | { |
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234 | switch(currentTag)
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235 | { |
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236 | case KXmlParser.START_TAG:
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237 | if (parser.getName().compareTo(CapabilitiesTags.GETCAPABILITIES)==0) |
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238 | { |
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239 | 4222 | jaume | serviceInfo.operations.put(CapabilitiesTags.GETCAPABILITIES , null);
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240 | 3687 | ldiaz | } |
241 | else if (parser.getName().compareTo(CapabilitiesTags.GETMAP)==0) |
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242 | 4222 | jaume | { |
243 | serviceInfo.operations.put(CapabilitiesTags.GETMAP, null);
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244 | parseGetMapTag(parser); |
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245 | 3687 | ldiaz | } |
246 | else if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO)==0) |
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247 | { |
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248 | 4222 | jaume | serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, null);
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249 | parseGetFeatureInfoTag(parser); |
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250 | 3687 | ldiaz | } |
251 | else if (parser.getName().compareTo(CapabilitiesTags.DESCRIBELAYER)==0) |
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252 | { |
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253 | 4222 | jaume | serviceInfo.operations.put(CapabilitiesTags.DESCRIBELAYER, null);
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254 | 3687 | ldiaz | } |
255 | break;
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256 | case KXmlParser.END_TAG:
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257 | if (parser.getName().compareTo(CapabilitiesTags.REQUEST) == 0) |
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258 | end = true;
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259 | break;
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260 | case KXmlParser.TEXT:
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261 | break;
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262 | } |
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263 | 4222 | jaume | if(!end)
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264 | currentTag = parser.next(); |
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265 | 3687 | ldiaz | } |
266 | // TODO: does not get such a tag when arrives here!!!!!!
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267 | //parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.REQUEST);
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268 | } |
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269 | |||
270 | 4222 | jaume | /**
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271 | * <p>Parses the GetMap tag </p>
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272 | */
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273 | private void parseGetMapTag(KXmlParser parser) throws IOException, XmlPullParserException |
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274 | { |
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275 | int currentTag;
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276 | boolean end = false; |
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277 | |||
278 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETMAP);
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279 | currentTag = parser.next(); |
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280 | |||
281 | while (!end)
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282 | { |
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283 | switch(currentTag)
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284 | { |
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285 | case KXmlParser.START_TAG:
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286 | if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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287 | { |
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288 | serviceInfo.formats.add(parser.nextText()); |
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289 | } |
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290 | else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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291 | { |
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292 | currentTag = parser.nextTag(); |
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293 | if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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294 | { |
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295 | currentTag = parser.nextTag(); |
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296 | if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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297 | { |
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298 | currentTag = parser.nextTag(); |
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299 | if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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300 | { |
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301 | String value = new String(); |
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302 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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303 | if (value != null){ |
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304 | serviceInfo.operations.put(CapabilitiesTags.GETMAP, value); |
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305 | } |
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306 | } |
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307 | } |
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308 | } |
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309 | } |
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310 | break;
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311 | case KXmlParser.END_TAG:
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312 | if (parser.getName().compareTo(CapabilitiesTags.GETMAP) == 0) |
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313 | end = true;
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314 | break;
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315 | case KXmlParser.TEXT:
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316 | break;
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317 | } |
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318 | if(!end)
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319 | currentTag = parser.next(); |
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320 | } |
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321 | } |
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322 | |||
323 | /**
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324 | * <p>Parses the GetMap tag </p>
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325 | */
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326 | private void parseGetFeatureInfoTag(KXmlParser parser) throws IOException, XmlPullParserException |
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327 | { |
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328 | int currentTag;
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329 | boolean end = false; |
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330 | |||
331 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETFEATUREINFO);
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332 | currentTag = parser.next(); |
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333 | |||
334 | while (!end)
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335 | { |
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336 | switch(currentTag)
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337 | { |
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338 | case KXmlParser.START_TAG:
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339 | if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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340 | { |
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341 | //TODO:
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342 | // add the supported formats by the GetFeatureInfo request
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343 | //serviceInfo.formats.add(parser.nextText());
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344 | } |
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345 | else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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346 | { |
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347 | currentTag = parser.nextTag(); |
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348 | if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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349 | { |
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350 | currentTag = parser.nextTag(); |
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351 | if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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352 | { |
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353 | currentTag = parser.nextTag(); |
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354 | if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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355 | { |
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356 | String value = new String(); |
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357 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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358 | if (value != null){ |
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359 | serviceInfo.online_resource = value; |
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360 | } |
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361 | } |
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362 | } |
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363 | } |
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364 | } |
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365 | break;
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366 | case KXmlParser.END_TAG:
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367 | if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO) == 0) |
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368 | end = true;
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369 | break;
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370 | case KXmlParser.TEXT:
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371 | break;
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372 | } |
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373 | if(!end)
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374 | currentTag = parser.next(); |
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375 | } |
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376 | } |
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377 | |||
378 | 3687 | ldiaz | private WMSLayer1_1_0 getFakeRootLayer(){
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379 | if (fakeRootLayer == null){ |
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380 | fakeRootLayer = new WMSLayer1_1_0();
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381 | fakeRootLayer.setTitle(serviceInfo.title); |
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382 | fakeRootLayer.setQueryable(false);
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383 | fakeRootLayer.setName(null);
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384 | } |
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385 | return fakeRootLayer;
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386 | } |
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387 | /* (non-Javadoc)
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388 | * @see org.gvsig.remoteClient.wms.WMSProtocolHandler#parseException(byte[])
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389 | */
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390 | protected String parseException(byte[] data) { |
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391 | ArrayList errors = new ArrayList(); |
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392 | KXmlParser kxmlParser = new KXmlParser();
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393 | Reader reader = new InputStreamReader(new ByteArrayInputStream(data)); |
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394 | try
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395 | { |
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396 | kxmlParser.setInput(reader); |
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397 | kxmlParser.nextTag(); |
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398 | int tag;
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399 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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400 | { |
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401 | kxmlParser.require(KXmlParser.START_TAG, null, ExceptionTags.EXCEPTION_ROOT);
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402 | tag = kxmlParser.nextTag(); |
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403 | while(tag != KXmlParser.END_DOCUMENT)
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404 | { |
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405 | switch(tag)
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406 | { |
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407 | case KXmlParser.START_TAG:
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408 | if (kxmlParser.getName().compareTo(ExceptionTags.SERVICE_EXCEPTION)==0){ |
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409 | String errorCode = kxmlParser.getAttributeValue("", ExceptionTags.CODE); |
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410 | errorCode = (errorCode != null) ? "["+errorCode+"] " : ""; |
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411 | String errorMessage = kxmlParser.nextText();
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412 | errors.add(errorCode+errorMessage); |
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413 | } |
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414 | break;
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415 | case KXmlParser.END_TAG:
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416 | break;
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417 | |||
418 | } |
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419 | tag = kxmlParser.nextTag(); |
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420 | } |
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421 | //kxmlParser.require(KXmlParser.END_DOCUMENT, null, null);
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422 | } |
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423 | } |
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424 | catch(XmlPullParserException parser_ex){
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425 | System.out.println(parser_ex.getMessage());
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426 | parser_ex.printStackTrace(); |
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427 | } |
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428 | catch (IOException ioe) { |
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429 | ioe.printStackTrace(); |
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430 | } |
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431 | String message = errors.size()>0? "" : null; |
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432 | for (int i = 0; i < errors.size(); i++) { |
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433 | message += (String) errors.get(i)+"\n"; |
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434 | } |
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435 | return message;
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436 | } |
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437 | |||
438 | } |