svn-gvsig-desktop / trunk / libraries / libRemoteServices / src / org / gvsig / remoteClient / wms / wms_1_3_0 / WMSProtocolHandler1_3_0.java @ 14705
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package org.gvsig.remoteClient.wms.wms_1_3_0; |
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import java.io.ByteArrayInputStream; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.TreeMap; |
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import org.gvsig.remoteClient.utils.CapabilitiesTags; |
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import org.gvsig.remoteClient.utils.EncodingXMLParser; |
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import org.gvsig.remoteClient.utils.ExceptionTags; |
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import org.gvsig.remoteClient.utils.Utilities; |
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import org.gvsig.remoteClient.wms.WMSStatus; |
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import org.kxml2.io.KXmlParser; |
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import org.xmlpull.v1.XmlPullParserException; |
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/**
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* <p>
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* Describes the handler to comunicate to a WMS 1.3.0
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* </p>
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*/
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public class WMSProtocolHandler1_3_0 extends org.gvsig.remoteClient.wms.WMSProtocolHandler { |
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private WMSLayer1_3_0 fakeRootLayer;
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public WMSProtocolHandler1_3_0()
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{
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this.version = "1.3.0"; |
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this.name = "WMS1.3.0"; |
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this.serviceInfo = new ServiceInformation(); |
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this.layers = new TreeMap(); |
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} |
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//------------------------------------------------------------------------------
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// Parsing methods....
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//------------------------------------------------------------------------------
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/**
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* <p>Parse the xml data retrieved from the WMS, it will parse the WMS Capabilities</p>
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*
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*/
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public void parse(File f) |
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{
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rootLayer = null;
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int tag;
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EncodingXMLParser kxmlParser = null;
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kxmlParser = new EncodingXMLParser();
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try
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{
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kxmlParser.setInput(f); |
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kxmlParser.nextTag(); |
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if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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{
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kxmlParser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITIES_ROOT1_3_0);
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tag = kxmlParser.nextTag(); |
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while(tag != KXmlParser.END_DOCUMENT)
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{
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switch(tag)
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{
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case KXmlParser.START_TAG:
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if (kxmlParser.getName().compareTo(CapabilitiesTags.SERVICE )==0) |
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{
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parseServiceTag(kxmlParser); |
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} |
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else if (kxmlParser.getName().compareTo(CapabilitiesTags.CAPABILITY)==0) |
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{
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parseCapabilityTag(kxmlParser); |
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} |
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break;
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case KXmlParser.END_TAG:
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break;
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case KXmlParser.TEXT:
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//System.out.println("[TEXT]["+kxmlParser.getText()+"]");
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break;
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} |
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tag = kxmlParser.next(); |
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}//while !END_DOCUMENT
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} |
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} |
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catch(XmlPullParserException parser_ex){
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parser_ex.printStackTrace(); |
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} |
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catch (IOException ioe) { |
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ioe.printStackTrace(); |
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} finally {
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} |
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// In the parsing process the layer has been filled
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} |
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/**
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* <p>Parses the Service Information </p>
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*/
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private void parseServiceTag(KXmlParser parser) throws IOException, XmlPullParserException |
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{
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int currentTag;
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boolean end = false; |
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parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.SERVICE);
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currentTag = parser.next(); |
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while (!end)
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{
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switch(currentTag)
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{
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.NAME)==0) |
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{
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serviceInfo.name = parser.nextText(); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.TITLE)==0) |
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{
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serviceInfo.title = parser.nextText(); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.ABSTRACT)==0) |
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{
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serviceInfo.abstr = parser.nextText(); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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{
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String value = new String(); |
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value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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if (value != null){ |
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serviceInfo.online_resource = value; |
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} |
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} |
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else if ((parser.getName().compareTo(CapabilitiesTags.KEYWORDLIST)==0) || |
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(parser.getName().compareTo(CapabilitiesTags.CONTACTINFORMATION)==0))
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{
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parser.skipSubTree(); |
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.SERVICE) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if (!end)
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currentTag = parser.next(); |
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} |
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parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.SERVICE);
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} |
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/**
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* <p>Parses the Capability Tag </p>
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*/
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private void parseCapabilityTag(KXmlParser parser) throws IOException, XmlPullParserException |
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{
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int currentTag;
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boolean end = false; |
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parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITY);
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currentTag = parser.next(); |
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while (!end)
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{
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switch(currentTag)
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{
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.REQUEST)==0) |
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{
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parseRequestTag(parser); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.EXCEPTION)==0) |
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{
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//TODO:
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//Add to serviceInformation the supported exception formats.
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.LAYER)==0) |
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{
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WMSLayer1_3_0 lyr = new WMSLayer1_3_0();
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if (rootLayer == null) |
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rootLayer = lyr; |
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else {
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// Handles when there is no general root layer, will use
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// a fake non-queryable one.
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if (!rootLayer.equals(getFakeRootLayer())){
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WMSLayer1_3_0 aux = (WMSLayer1_3_0) rootLayer; |
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rootLayer = getFakeRootLayer(); |
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rootLayer.getChildren().add(aux); |
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} |
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rootLayer.getChildren().add(lyr); |
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} |
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lyr.parse(parser, layers); |
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if (lyr.getName()!=null) |
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layers.put(lyr.getName(), lyr); |
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} |
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else if ((parser.getName().compareTo(CapabilitiesTags.VENDORSPECIFICCAPABILITIES)==0) || |
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(parser.getName().compareTo(CapabilitiesTags.USERDEFINEDSYMBOLIZATION )==0))
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{
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parser.skipSubTree(); |
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.CAPABILITY) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if (!end)
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currentTag = parser.next(); |
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} |
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//parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.CAPABILITY);
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} |
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/**
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* <p>Parses the Request tag </p>
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*/
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private void parseRequestTag(KXmlParser parser) throws IOException, XmlPullParserException |
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{
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int currentTag;
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boolean end = false; |
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parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.REQUEST);
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currentTag = parser.next(); |
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while (!end)
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{
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switch(currentTag)
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{
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.GETCAPABILITIES)==0) |
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{
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//we could parse here the info of Capabilities request, but we actually never use it.
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.GETMAP)==0) |
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{
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serviceInfo.operations.put(CapabilitiesTags.GETMAP, null);
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parseGetMapTag(parser); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO)==0) |
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{
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serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, null);
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parseGetFeatureInfoTag(parser); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.DESCRIBELAYER)==0) |
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{
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serviceInfo.operations.put(CapabilitiesTags.DESCRIBELAYER, null);
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.GETLEGENDGRAPHIC)==0) |
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{
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serviceInfo.operations.put(CapabilitiesTags.GETLEGENDGRAPHIC, null);
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parseGetLegendGraphicTag(parser); |
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.REQUEST) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if (!end)
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currentTag = parser.next(); |
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} |
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// TODO: does not get such a tag when arrives here!!!!!!
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//parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.REQUEST);
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} |
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/**
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* <p>Parses the GetMap tag </p>
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*/
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private void parseGetMapTag(KXmlParser parser) throws IOException, XmlPullParserException |
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{
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int currentTag;
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boolean end = false; |
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parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETMAP);
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currentTag = parser.next(); |
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while (!end)
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{
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switch(currentTag)
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{
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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{
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serviceInfo.formats.add(parser.nextText()); |
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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{
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currentTag = parser.nextTag(); |
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if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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{
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currentTag = parser.nextTag(); |
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if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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{
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currentTag = parser.nextTag(); |
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if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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{
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String value = new String(); |
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value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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if (value != null){ |
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serviceInfo.operations.put(CapabilitiesTags.GETMAP, value); |
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} |
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} |
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} |
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} |
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.GETMAP) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if(!end)
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currentTag = parser.next(); |
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} |
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} |
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/**
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* <p>Parses the GetFeatureInfo tag </p>
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*/
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private void parseGetFeatureInfoTag(KXmlParser parser) throws IOException, XmlPullParserException |
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{
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int currentTag;
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boolean end = false; |
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parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETFEATUREINFO);
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currentTag = parser.next(); |
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while (!end)
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{
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switch(currentTag)
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{
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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{
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//TODO:
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// add the supported formats by the GetFeatureInfo request
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//serviceInfo.formats.add(parser.nextText());
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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{
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currentTag = parser.nextTag(); |
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if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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{
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currentTag = parser.nextTag(); |
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if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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{
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currentTag = parser.nextTag(); |
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if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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{
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String value = new String(); |
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value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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if (value != null){ |
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//serviceInfo.online_resource = value;
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serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, value); |
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} |
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} |
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} |
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} |
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if(!end)
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currentTag = parser.next(); |
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} |
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} |
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/**
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* <p>Parses the GetLegendGraphic tag </p>
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*/
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private void parseGetLegendGraphicTag(KXmlParser parser) throws IOException, XmlPullParserException |
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{
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int currentTag;
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boolean end = false; |
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parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETLEGENDGRAPHIC);
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currentTag = parser.next(); |
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while (!end)
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{
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switch(currentTag)
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{
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case KXmlParser.START_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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{
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//TODO:
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// add the supported formats by the GetLegendGraphic request
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//serviceInfo.formats.add(parser.nextText());
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} |
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else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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{
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currentTag = parser.nextTag(); |
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if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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{
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currentTag = parser.nextTag(); |
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if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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{
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currentTag = parser.nextTag(); |
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if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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{
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String value = new String(); |
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value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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if (value != null){ |
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serviceInfo.operations.put(CapabilitiesTags.GETLEGENDGRAPHIC, value); |
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} |
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} |
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} |
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} |
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} |
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break;
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case KXmlParser.END_TAG:
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if (parser.getName().compareTo(CapabilitiesTags.GETLEGENDGRAPHIC) == 0) |
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end = true;
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break;
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case KXmlParser.TEXT:
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break;
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} |
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if(!end)
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currentTag = parser.next(); |
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} |
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} |
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private WMSLayer1_3_0 getFakeRootLayer(){
|
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if (fakeRootLayer == null){ |
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fakeRootLayer = new WMSLayer1_3_0();
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fakeRootLayer.setTitle(serviceInfo.title); |
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fakeRootLayer.setQueryable(false);
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fakeRootLayer.setName(null);
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} |
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return fakeRootLayer;
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} |
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/* (non-Javadoc)
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* @see org.gvsig.remoteClient.wms.WMSProtocolHandler#parseException(byte[])
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*/
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protected String parseException(byte[] data) { |
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ArrayList errors = new ArrayList(); |
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KXmlParser kxmlParser = new KXmlParser();
|
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try
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{
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kxmlParser.setInput(new ByteArrayInputStream(data), encoding); |
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kxmlParser.nextTag(); |
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int tag;
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if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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{
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kxmlParser.require(KXmlParser.START_TAG, null, ExceptionTags.EXCEPTION_ROOT);
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tag = kxmlParser.nextTag(); |
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while(tag != KXmlParser.END_DOCUMENT)
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{
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switch(tag)
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{
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case KXmlParser.START_TAG:
|
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if (kxmlParser.getName().compareTo(ExceptionTags.SERVICE_EXCEPTION)==0){ |
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String errorCode = kxmlParser.getAttributeValue("", ExceptionTags.CODE); |
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errorCode = (errorCode != null) ? "["+errorCode+"] " : ""; |
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String errorMessage = kxmlParser.nextText();
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errors.add(errorCode+errorMessage); |
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} |
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break;
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case KXmlParser.END_TAG:
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break;
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} |
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tag = kxmlParser.nextTag(); |
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} |
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//kxmlParser.require(KXmlParser.END_DOCUMENT, null, null);
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} |
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} |
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catch(XmlPullParserException parser_ex){
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System.out.println(parser_ex.getMessage());
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parser_ex.printStackTrace(); |
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} |
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catch (IOException ioe) { |
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ioe.printStackTrace(); |
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} |
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String message = errors.size()>0? "" : null; |
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for (int i = 0; i < errors.size(); i++) { |
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message += (String) errors.get(i)+"\n"; |
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} |
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return message;
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} |
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|
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/**
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* Builds the GetFeatureInfoRequest according to the 1.3.0 OGC WMS Specifications
|
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*/
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protected String buildGetFeatureInfoRequest(WMSStatus status, int x, int y) |
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{
|
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// TODO: pass by parameter the info output format?
|
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StringBuffer req = new StringBuffer(); |
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String symbol = null; |
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|
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String onlineResource;
|
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if (status.getOnlineResource() == null) |
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onlineResource = getHost(); |
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else
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onlineResource = status.getOnlineResource(); |
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symbol = getSymbol(onlineResource); |
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|
| 503 |
req.append(onlineResource).append(symbol).append("REQUEST=GetFeatureInfo&SERVICE=WMS&");
|
| 504 |
req.append("QUERY_LAYERS=").append(Utilities.Vector2CS(status.getLayerNames())); |
| 505 |
req.append("&VERSION=").append(getVersion()).append("&INFO_FORMAT=application/vnd.ogc.gml&"); |
| 506 |
req.append(getPartialQuery(status)).append("&I="+x + "&J="+y); |
| 507 |
req.append("&FEATURE_COUNT=10000");
|
| 508 |
if (status.getExceptionFormat() != null) { |
| 509 |
req.append("&EXCEPTIONS=" + status.getExceptionFormat());
|
| 510 |
} else {
|
| 511 |
req.append("&EXCEPTIONS=XML");
|
| 512 |
} |
| 513 |
return req.toString().replaceAll(" ", "%20"); |
| 514 |
} |
| 515 |
} |