svn-gvsig-desktop / tags / gvSIGv0_6_1RELEASE / libraries / libRemoteServices / src / org / gvsig / remoteClient / wms / wms_1_3_0 / WMSProtocolHandler1_3_0.java @ 5222
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1 | 3660 | ldiaz | |
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2 | package org.gvsig.remoteClient.wms.wms_1_3_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 1.3.0
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21 | * </p>
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22 | */
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23 | public class WMSProtocolHandler1_3_0 extends org.gvsig.remoteClient.wms.WMSProtocolHandler { |
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24 | private WMSLayer1_3_0 fakeRootLayer;
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25 | |||
26 | public WMSProtocolHandler1_3_0()
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27 | { |
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28 | this.version = "1.3.0"; |
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29 | this.name = "WMS1.3.0"; |
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30 | this.serviceInfo = new ServiceInformation(); |
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31 | 3911 | ldiaz | this.layers = new TreeMap(); |
32 | 3660 | ldiaz | } |
33 | |||
34 | //------------------------------------------------------------------------------
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35 | // Parsing methods....
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36 | //------------------------------------------------------------------------------
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37 | /**
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38 | * <p>Parse the xml data retrieved from the WMS, it will parse the WMS Capabilities</p>
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39 | *
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40 | */
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41 | public void parse(File f) |
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42 | { |
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43 | FileReader reader = null; |
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44 | try
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45 | { |
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46 | reader = new FileReader(f); |
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47 | } |
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48 | catch(FileNotFoundException ex) { |
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49 | ex.printStackTrace(); |
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50 | } |
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51 | |||
52 | int tag;
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53 | KXmlParser kxmlParser = null;
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54 | kxmlParser = new KXmlParser();
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55 | try
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56 | { |
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57 | kxmlParser.setInput(reader); |
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58 | kxmlParser.nextTag(); |
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59 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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60 | { |
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61 | 3687 | ldiaz | kxmlParser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITIES_ROOT1_3_0);
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62 | 3660 | ldiaz | tag = kxmlParser.nextTag(); |
63 | while(tag != KXmlParser.END_DOCUMENT)
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64 | { |
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65 | switch(tag)
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66 | 4036 | ldiaz | { |
67 | 3660 | ldiaz | case KXmlParser.START_TAG:
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68 | if (kxmlParser.getName().compareTo(CapabilitiesTags.SERVICE )==0) |
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69 | { |
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70 | parseServiceTag(kxmlParser); |
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71 | } |
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72 | else if (kxmlParser.getName().compareTo(CapabilitiesTags.CAPABILITY)==0) |
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73 | { |
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74 | parseCapabilityTag(kxmlParser); |
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75 | } |
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76 | break;
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77 | case KXmlParser.END_TAG:
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78 | break;
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79 | case KXmlParser.TEXT:
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80 | 4036 | ldiaz | //System.out.println("[TEXT]["+kxmlParser.getText()+"]");
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81 | 3660 | ldiaz | break;
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82 | } |
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83 | tag = kxmlParser.next(); |
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84 | 3743 | ldiaz | }//while !END_DOCUMENT
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85 | 3660 | ldiaz | } |
86 | } |
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87 | 4036 | ldiaz | catch(XmlPullParserException parser_ex){
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88 | 3660 | ldiaz | parser_ex.printStackTrace(); |
89 | } |
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90 | catch (IOException ioe) { |
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91 | ioe.printStackTrace(); |
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92 | 4036 | ldiaz | } finally {
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93 | 3660 | ldiaz | |
94 | } |
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95 | // In the parsing process the layer has been filled
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96 | } |
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97 | |||
98 | /**
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99 | * <p>Parses the Service Information </p>
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100 | */
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101 | private void parseServiceTag(KXmlParser parser) throws IOException, XmlPullParserException |
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102 | { |
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103 | int currentTag;
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104 | boolean end = false; |
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105 | |||
106 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.SERVICE);
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107 | currentTag = parser.next(); |
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108 | |||
109 | while (!end)
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110 | { |
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111 | switch(currentTag)
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112 | { |
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113 | case KXmlParser.START_TAG:
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114 | if (parser.getName().compareTo(CapabilitiesTags.NAME)==0) |
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115 | { |
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116 | serviceInfo.name = parser.nextText(); |
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117 | } |
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118 | else if (parser.getName().compareTo(CapabilitiesTags.TITLE)==0) |
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119 | { |
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120 | serviceInfo.title = parser.nextText(); |
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121 | } |
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122 | else if (parser.getName().compareTo(CapabilitiesTags.ABSTRACT)==0) |
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123 | { |
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124 | serviceInfo.abstr = parser.nextText(); |
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125 | } |
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126 | 4019 | ldiaz | else if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
127 | { |
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128 | String value = new String(); |
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129 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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130 | if (value != null){ |
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131 | serviceInfo.online_resource = value; |
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132 | } |
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133 | } |
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134 | 3660 | ldiaz | else if ((parser.getName().compareTo(CapabilitiesTags.KEYWORDLIST)==0) || |
135 | (parser.getName().compareTo(CapabilitiesTags.CONTACTINFORMATION)==0))
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136 | { |
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137 | parser.skipSubTree(); |
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138 | } |
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139 | break;
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140 | case KXmlParser.END_TAG:
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141 | if (parser.getName().compareTo(CapabilitiesTags.SERVICE) == 0) |
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142 | end = true;
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143 | break;
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144 | case KXmlParser.TEXT:
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145 | break;
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146 | } |
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147 | if (!end)
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148 | currentTag = parser.next(); |
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149 | } |
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150 | parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.SERVICE);
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151 | } |
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152 | 4036 | ldiaz | |
153 | 3660 | ldiaz | /**
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154 | * <p>Parses the Capability Tag </p>
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155 | */
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156 | private void parseCapabilityTag(KXmlParser parser) throws IOException, XmlPullParserException |
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157 | { |
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158 | int currentTag;
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159 | boolean end = false; |
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160 | |||
161 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITY);
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162 | currentTag = parser.next(); |
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163 | |||
164 | while (!end)
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165 | { |
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166 | switch(currentTag)
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167 | { |
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168 | case KXmlParser.START_TAG:
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169 | if (parser.getName().compareTo(CapabilitiesTags.REQUEST)==0) |
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170 | { |
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171 | parseRequestTag(parser); |
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172 | } |
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173 | else if (parser.getName().compareTo(CapabilitiesTags.EXCEPTION)==0) |
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174 | { |
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175 | 4036 | ldiaz | //TODO:
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176 | //Add to serviceInformation the supported exception formats.
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177 | 3660 | ldiaz | } |
178 | else if (parser.getName().compareTo(CapabilitiesTags.LAYER)==0) |
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179 | { |
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180 | WMSLayer1_3_0 lyr = new WMSLayer1_3_0();
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181 | if (rootLayer == null) |
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182 | rootLayer = lyr; |
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183 | else {
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184 | // Handles when there is no general root layer, will use
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185 | // a fake non-queryable one.
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186 | if (!rootLayer.equals(getFakeRootLayer())){
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187 | WMSLayer1_3_0 aux = (WMSLayer1_3_0) rootLayer; |
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188 | rootLayer = getFakeRootLayer(); |
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189 | rootLayer.getChildren().add(aux); |
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190 | } |
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191 | rootLayer.getChildren().add(lyr); |
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192 | } |
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193 | lyr.parse(parser, layers); |
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194 | |||
195 | if (lyr.getName()!=null) |
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196 | 4036 | ldiaz | layers.put(lyr.getName(), lyr); |
197 | 3660 | ldiaz | } |
198 | else if ((parser.getName().compareTo(CapabilitiesTags.VENDORSPECIFICCAPABILITIES)==0) || |
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199 | 4036 | ldiaz | (parser.getName().compareTo(CapabilitiesTags.USERDEFINEDSYMBOLIZATION )==0))
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200 | 3660 | ldiaz | { |
201 | parser.skipSubTree(); |
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202 | } |
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203 | break;
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204 | case KXmlParser.END_TAG:
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205 | if (parser.getName().compareTo(CapabilitiesTags.CAPABILITY) == 0) |
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206 | end = true;
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207 | break;
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208 | case KXmlParser.TEXT:
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209 | break;
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210 | } |
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211 | 4049 | ldiaz | if (!end)
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212 | currentTag = parser.next(); |
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213 | 3660 | ldiaz | } |
214 | //parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.CAPABILITY);
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215 | } |
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216 | |||
217 | /**
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218 | * <p>Parses the Request tag </p>
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219 | */
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220 | private void parseRequestTag(KXmlParser parser) throws IOException, XmlPullParserException |
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221 | { |
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222 | int currentTag;
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223 | boolean end = false; |
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224 | |||
225 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.REQUEST);
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226 | currentTag = parser.next(); |
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227 | |||
228 | while (!end)
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229 | { |
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230 | switch(currentTag)
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231 | { |
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232 | case KXmlParser.START_TAG:
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233 | if (parser.getName().compareTo(CapabilitiesTags.GETCAPABILITIES)==0) |
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234 | { |
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235 | 4036 | ldiaz | //we could parse here the info of Capabilities request, but we actually never use it.
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236 | 3660 | ldiaz | } |
237 | else if (parser.getName().compareTo(CapabilitiesTags.GETMAP)==0) |
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238 | 4036 | ldiaz | { |
239 | serviceInfo.operations.put(CapabilitiesTags.GETMAP, null);
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240 | 4019 | ldiaz | parseGetMapTag(parser); |
241 | 3660 | ldiaz | } |
242 | else if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO)==0) |
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243 | { |
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244 | 4036 | ldiaz | serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, null);
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245 | 4019 | ldiaz | parseGetFeatureInfoTag(parser); |
246 | 3660 | ldiaz | } |
247 | break;
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248 | case KXmlParser.END_TAG:
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249 | if (parser.getName().compareTo(CapabilitiesTags.REQUEST) == 0) |
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250 | end = true;
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251 | break;
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252 | case KXmlParser.TEXT:
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253 | break;
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254 | } |
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255 | 4049 | ldiaz | if (!end)
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256 | currentTag = parser.next(); |
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257 | 3660 | ldiaz | } |
258 | // TODO: does not get such a tag when arrives here!!!!!!
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259 | //parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.REQUEST);
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260 | } |
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261 | 4019 | ldiaz | |
262 | /**
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263 | * <p>Parses the GetMap tag </p>
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264 | */
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265 | private void parseGetMapTag(KXmlParser parser) throws IOException, XmlPullParserException |
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266 | { |
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267 | int currentTag;
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268 | boolean end = false; |
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269 | |||
270 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETMAP);
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271 | currentTag = parser.next(); |
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272 | |||
273 | while (!end)
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274 | { |
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275 | switch(currentTag)
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276 | { |
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277 | case KXmlParser.START_TAG:
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278 | if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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279 | { |
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280 | serviceInfo.formats.add(parser.nextText()); |
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281 | } |
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282 | else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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283 | { |
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284 | currentTag = parser.nextTag(); |
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285 | if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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286 | { |
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287 | currentTag = parser.nextTag(); |
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288 | if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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289 | { |
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290 | currentTag = parser.nextTag(); |
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291 | if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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292 | { |
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293 | String value = new String(); |
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294 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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295 | if (value != null){ |
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296 | 4036 | ldiaz | serviceInfo.operations.put(CapabilitiesTags.GETMAP, value); |
297 | } |
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298 | 4019 | ldiaz | } |
299 | } |
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300 | } |
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301 | } |
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302 | break;
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303 | case KXmlParser.END_TAG:
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304 | if (parser.getName().compareTo(CapabilitiesTags.GETMAP) == 0) |
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305 | end = true;
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306 | break;
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307 | case KXmlParser.TEXT:
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308 | break;
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309 | } |
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310 | 4049 | ldiaz | if(!end)
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311 | currentTag = parser.next(); |
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312 | 4019 | ldiaz | } |
313 | } |
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314 | |||
315 | /**
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316 | * <p>Parses the GetMap tag </p>
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317 | */
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318 | private void parseGetFeatureInfoTag(KXmlParser parser) throws IOException, XmlPullParserException |
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319 | { |
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320 | int currentTag;
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321 | boolean end = false; |
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322 | |||
323 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETFEATUREINFO);
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324 | currentTag = parser.next(); |
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325 | |||
326 | while (!end)
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327 | { |
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328 | switch(currentTag)
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329 | { |
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330 | case KXmlParser.START_TAG:
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331 | if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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332 | { |
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333 | //TODO:
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334 | // add the supported formats by the GetFeatureInfo request
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335 | //serviceInfo.formats.add(parser.nextText());
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336 | } |
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337 | else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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338 | { |
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339 | currentTag = parser.nextTag(); |
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340 | if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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341 | { |
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342 | currentTag = parser.nextTag(); |
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343 | if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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344 | { |
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345 | currentTag = parser.nextTag(); |
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346 | if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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347 | { |
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348 | String value = new String(); |
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349 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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350 | if (value != null){ |
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351 | 5073 | jaume | serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, value); |
352 | 4019 | ldiaz | } |
353 | } |
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354 | } |
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355 | } |
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356 | } |
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357 | break;
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358 | case KXmlParser.END_TAG:
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359 | if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO) == 0) |
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360 | end = true;
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361 | break;
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362 | case KXmlParser.TEXT:
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363 | break;
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364 | } |
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365 | 4049 | ldiaz | if(!end)
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366 | currentTag = parser.next(); |
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367 | 4019 | ldiaz | } |
368 | } |
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369 | 3660 | ldiaz | |
370 | private WMSLayer1_3_0 getFakeRootLayer(){
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371 | if (fakeRootLayer == null){ |
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372 | fakeRootLayer = new WMSLayer1_3_0();
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373 | fakeRootLayer.setTitle(serviceInfo.title); |
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374 | fakeRootLayer.setQueryable(false);
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375 | fakeRootLayer.setName(null);
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376 | } |
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377 | return fakeRootLayer;
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378 | } |
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379 | /* (non-Javadoc)
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380 | * @see org.gvsig.remoteClient.wms.WMSProtocolHandler#parseException(byte[])
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381 | */
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382 | protected String parseException(byte[] data) { |
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383 | ArrayList errors = new ArrayList(); |
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384 | KXmlParser kxmlParser = new KXmlParser();
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385 | Reader reader = new InputStreamReader(new ByteArrayInputStream(data)); |
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386 | try
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387 | { |
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388 | kxmlParser.setInput(reader); |
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389 | kxmlParser.nextTag(); |
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390 | int tag;
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391 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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392 | { |
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393 | kxmlParser.require(KXmlParser.START_TAG, null, ExceptionTags.EXCEPTION_ROOT);
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394 | tag = kxmlParser.nextTag(); |
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395 | while(tag != KXmlParser.END_DOCUMENT)
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396 | { |
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397 | switch(tag)
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398 | { |
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399 | case KXmlParser.START_TAG:
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400 | if (kxmlParser.getName().compareTo(ExceptionTags.SERVICE_EXCEPTION)==0){ |
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401 | String errorCode = kxmlParser.getAttributeValue("", ExceptionTags.CODE); |
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402 | errorCode = (errorCode != null) ? "["+errorCode+"] " : ""; |
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403 | String errorMessage = kxmlParser.nextText();
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404 | errors.add(errorCode+errorMessage); |
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405 | } |
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406 | break;
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407 | case KXmlParser.END_TAG:
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408 | break;
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409 | |||
410 | } |
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411 | tag = kxmlParser.nextTag(); |
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412 | } |
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413 | //kxmlParser.require(KXmlParser.END_DOCUMENT, null, null);
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414 | } |
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415 | } |
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416 | catch(XmlPullParserException parser_ex){
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417 | System.out.println(parser_ex.getMessage());
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418 | parser_ex.printStackTrace(); |
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419 | } |
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420 | catch (IOException ioe) { |
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421 | ioe.printStackTrace(); |
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422 | } |
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423 | String message = errors.size()>0? "" : null; |
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424 | for (int i = 0; i < errors.size(); i++) { |
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425 | message += (String) errors.get(i)+"\n"; |
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426 | } |
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427 | return message;
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428 | } |
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429 | |||
430 | } |