Examples of org.apache.xpath.objects.XObject

org.apache.xpath.objects.XObject
This class represents an XPath object, and is capable of converting the object to various types, such as a string. This class acts as the base class to other XPath type objects, such as XString, and provides polymorphic casting capabilities. @xsl.usage general

  public XObject executeRelativePathPattern(
          XPathContext xctxt, StepPattern prevStep)
            throws javax.xml.transform.TransformerException
  {


    XObject score = NodeTest.SCORE_NONE;
    int context = xctxt.getCurrentNode();
    DTM dtm = xctxt.getDTM(context);


    if (null != dtm)
    {

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        // if(m_cdtm.getNodeName(n).equals("near-east"))
        System.out.println("pattern: "+m_pattern.toString());
        m_pattern.debugWhatToShow(m_pattern.getWhatToShow());
      }
      
      XObject score = m_pattern.execute(xctxt);
      
      if(DEBUG)
      {
        // System.out.println("analysis: "+Integer.toBinaryString(m_analysis));
        System.out.println("score: "+score);

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      throw new javax.xml.transform.TransformerException(
        XPATHMessages.createXPATHMessage(
          XPATHErrorResources.ER_EXTENSION_FUNCTION_CANNOT_BE_INVOKED,
          new Object[] {toString()}));
      
    XObject result;
    Vector argVec = new Vector();
    int nArgs = m_argVec.size();


    for (int i = 0; i < nArgs; i++)
    {
      Expression arg = (Expression) m_argVec.elementAt(i);
      
      XObject xobj = arg.execute(xctxt);
      /*
       * Should cache the arguments for func:function
       */
      xobj.allowDetachToRelease(false); 
      argVec.addElement(xobj);
    }
    //dml
    ExtensionsProvider extProvider = (ExtensionsProvider)xctxt.getOwnerObject();
    Object val = extProvider.extFunction(this, argVec);

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        dtm.dispatchCharactersEvents(node, handler, true);
      }
    }
    else
    {
      XObject obj = execute(xctxt);
      obj.dispatchCharactersEvents(handler);
    }
  }

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    for (int i = 0; i < nl.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
      
      XObject object = null;
      try
      {
        XPath dynamicXPath = new XPath(expr, xctxt.getSAXLocator(),
                                       xctxt.getNamespaceContext(),
                                       XPath.SELECT);
        object = dynamicXPath.execute(xctxt, contextNode, xctxt.getNamespaceContext());
        
        if (object instanceof XNodeSet)
        {
          NodeList nodelist = null;
          nodelist = ((XNodeSet)object).nodelist();
        
          for (int k = 0; k < nodelist.getLength(); k++)
          {
            Node n = nodelist.item(k);
            if (!resultSet.contains(n))
              resultSet.addNode(n);
          }
        }
        else
        {
    if (lDoc == null)
    {
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            dbf.setNamespaceAware(true);
            DocumentBuilder db = dbf.newDocumentBuilder();
            lDoc = db.newDocument();
          }
        
          Element element = null;
          if (object instanceof XNumber)
            element = lDoc.createElementNS(EXSL_URI, "exsl:number");
          else if (object instanceof XBoolean)
            element = lDoc.createElementNS(EXSL_URI, "exsl:boolean");
          else
            element = lDoc.createElementNS(EXSL_URI, "exsl:string");
          
          Text textNode = lDoc.createTextNode(object.str());
          element.appendChild(textNode);
          resultSet.addNode(element);
        }
      }
      catch (Exception e)

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      for (int i = 0; i < iterationList.getLength(); i++)
      {
        int contextNode = contextNodes.item(i);
        xctxt.pushCurrentNode(contextNode);


        XObject object = null;
        try
        {
          XPath dynamicXPath = new XPath(expr, xctxt.getSAXLocator(),
                                         xctxt.getNamespaceContext(),
                                         XPath.SELECT);

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    XPathContext xctxt = transformer.getXPathContext();
    CountersTable ctable = transformer.getCountersTable();


    if (null != m_valueExpr)
    {
      XObject countObj = m_valueExpr.execute(xctxt, sourceNode, this);
      //According to Errata E24
      double d_count = java.lang.Math.floor(countObj.num()+ 0.5);
      if (Double.isNaN(d_count)) return "NaN";
      else if (d_count < 0 && Double.isInfinite(d_count)) return "-Infinity";
      else if (Double.isInfinite(d_count)) return "Infinity";
      else if (d_count == 0) return "0";
      else{

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          XPathContext xctxt, ContentHandler handler)
            throws javax.xml.transform.TransformerException,
                   org.xml.sax.SAXException
  {


    XObject obj = execute(xctxt);


    obj.dispatchCharactersEvents(handler);
    obj.detach();
  }

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    if(null != fileNameExpr)
    {
      org.apache.xpath.XPathContext xctxt 
        = context.getTransformer().getXPathContext();
      XPath myxpath = new XPath(fileNameExpr, elem, xctxt.getNamespaceContext(), XPath.SELECT);
      XObject xobj = myxpath.execute(xctxt, context.getContextNode(), elem);
      fileName = xobj.str();
      if((null == fileName) || (fileName.length() == 0))
      {
        fileName = elem.getAttribute ("file", 
                                      context.getContextNode(), 
                                      context.getTransformer());

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          Node contextNode, String str, Node namespaceNode)
            throws TransformerException
  {


    // Execute the XPath, and have it return the result
    XObject list = eval(contextNode, str, namespaceNode);


    // Have the XObject return its result as a NodeSetDTM.                
    return list.nodeset();
  }

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