Re: [Vtd-xml-users] XPath doubt

[Jimmy Z. <cra...@co...>]

Can you try to compile and run the code attached in this email to see
if there is any issue?=20

/*
 * Created on Mar 27, 2007
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import com.ximpleware.*;
public class NSTest {
    public static void main(String s[]) {
        AutoPilot ap =3D new AutoPilot();
        ap.declareXPathNameSpace("ns1","ns1");
        ap.declareXPathNameSpace("ns2","ns2");
        ap.declareXPathNameSpace("ns3","ns3");
        String XML =3D "<ns1:good xmlns:ns1=3D'ns1'>\n"
                  +"<ns2:bad  xmlns:ns2=3D'ns2'>\n"
                  +"<ns3:ugly  xmlns:ns3=3D'ns3'/>\n"
                  +"</ns2:bad>\n"
        ;           +"</ns1:good>";
        try{
            ap.selectXPath("/ns1:good/ns2:bad/ns3:ugly");
            System.out.println(" expr =3D=3D=3D> " + =
ap.getExprString());
            VTDGen vg =3D new VTDGen();
            vg.setDoc(XML.getBytes());
            vg.parse(true);
            VTDNav vn =3D vg.getNav();
            ap.bind(vn);
            int i;
            while((i=3Dap. evalXPath())!=3D-1){
                System.out.println(" token name =
=3D=3D>"+vn.toString(i));
            }
        }catch(Exception e){
            System.out.println("exception =3D=3D>"+e);
        }
    }
}
  ----- Original Message -----=20
  From: Jimmy Zhang=20
  To: Fernando Gonzalez ; vtd...@li...=20
  Sent: Tuesday, March 27, 2007 11:14 AM
  Subject: [Norton AntiSpam] Re: [Vtd-xml-users] XPath doubt


  Will investigate and get back to you
    ----- Original Message -----=20
    From: Fernando Gonzalez=20
    To: vtd...@li...=20
    Sent: Tuesday, March 27, 2007 1:55 AM
    Subject: [Vtd-xml-users] XPath doubt


    Hi again,

    I'm having some problems using XPath expressions...=20
    When I use the "/wfs:FeatureCollection/gml:featureMember" expression =
it works fine.=20
    But if I add one more element: =
"/wfs:FeatureCollection/gml:featureMember/cite:Streams" it matches =
nothing...=20
    The most surprising (to me) is that if I use this =
"/wfs:FeatureCollection/gml:featureMember/*" it matches the =
"cite:Streams" elements in the XML.

    Am I missing something??

    By the way, I don't know what's the point of the " =
AutoPilot.selectElementNS" and "AutoPilot.declareXPathNameSpace" methods =
so maybe the problem is there. Where can I find some documentation about =
them. I looked in the javadoc but it's not clear to me.

    Thanks in advance,

    This is the code and the file:

            AutoPilot ap =3D new AutoPilot(vn);
            ap.selectElementNS("www.opengeospatial.net/cite ", "*");
            ap.declareXPathNameSpace("cite", =
"www.opengeospatial.net/cite");
            ap.selectElementNS(" http://www.opengis.net/gml", "*");
            ap.declareXPathNameSpace("gml", =
"http://www.opengis.net/gml");
            ap.selectElementNS(" http://www.opengis.net/wfs", "*");
            ap.declareXPathNameSpace("wfs", =
"http://www.opengis.net/wfs");=20
            =
ap.selectXPath("/wfs:FeatureCollection/gml:featureMember/cite:Streams");
            int result =3D -1;
            while ((result =3D ap.evalXPath()) !=3D -1) {
                long l =3D vn.getElementFragment ();
                int tokenOffset =3D (int) (0x0000FFFF & l);
                int tokenLength =3D (int) ((0xFFFF0000 & l) >> 32);

                System.out.println(new String(b, tokenOffset, =
tokenLength));
            }


    I have the following XML file:


    <?xml version=3D"1.0" encoding=3D"UTF-8"?>
    <wfs:FeatureCollection xmlns:wfs=3D"http://www.opengis.net/wfs " =
xmlns:gml=3D"http://www.opengis.net/gml" =
xmlns:cite=3D"http://www.opengeospatial.net/cite" xmlns:xsi=3D" =
http://www.w3.org/2001/XMLSchema-instance" =
xsi:schemaLocation=3D"http://www.opengeospatial.net/cite =
http://www.refractions.net:8082/geoserver1.3.1/wfs/DescribeFeatureType?ty=
peName=3Dcite:Streams http://www.opengis.net/wfs =
http://www.refractions.net:8082/geoserver1.3.1/schemas/wfs/1.0.0/WFS-basi=
c.xsd">
      <gml:boundedBy>
        <gml:Box>
          <gml:coordinates decimal=3D"." cs=3D"," ts=3D" ">- =
0.0004,-0.0024 0.0036,0.0024</gml:coordinates>
        </gml:Box>
      </gml:boundedBy>
      <gml:featureMember>
        <cite:Streams fid=3D"Streams.1">
          <cite:the_geom>
            <gml:MultiLineString>
    ...





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