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

      m_keyNodes.reset();
      while (DTM.NULL != (currentNode = m_keyNodes.nextNode()))
      {
        try
        {
          XObject xuse = keyDeclaration.getUse().execute(xctxt, currentNode, ki.getPrefixResolver());


          if (xuse.getType() != xuse.CLASS_NODESET)
          {
            XMLString exprResult = xuse.xstr();
            addValueInRefsTable(xctxt, exprResult, currentNode);
          }
          else
          {
            DTMIterator i = ((XNodeSet)xuse).iterRaw();

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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
        {
          Document 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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        XPath dot = new XPath(".", null, null, XPath.SELECT);
        expect(pageContext.findAttribute("doc")).andStubReturn(test);
        tag.setSelect("$doc/root/a");
        replay(pageContext);
        long time = -System.nanoTime();
        XObject result = null;
        if (tag.doStartTag() == IterationTag.EVAL_BODY_INCLUDE) {
            do {
//                XPathContext context = tag.getContext();
//                result = dot.execute(context, context.getCurrentNode(), null);
            } while (tag.doAfterBody() == IterationTag.EVAL_BODY_AGAIN);

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   */
  public XObject execute(XPathContext xctxt)
          throws javax.xml.transform.TransformerException
  {


    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);


      argVec.addElement(xobj);
    }
    //dml
    ExtensionsProvider extProvider = (ExtensionsProvider)xctxt.getOwnerObject();

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

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   */
  public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
  {


    int context = getArg0AsNode(xctxt);
    XObject val;


    if (DTM.NULL != context)
    {
      DTM dtm = xctxt.getDTM(context);
      String qname = dtm.getNodeNameX(context);

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    int docContext = dtm.getDocument();


    if (DTM.NULL == docContext)
      error(xctxt, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC, null);


    XObject arg = m_arg0.execute(xctxt);
    int argType = arg.getType();
    XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
    NodeSetDTM nodeSet = nodes.mutableNodeset();


    if (XObject.CLASS_NODESET == argType)
    {
      DTMIterator ni = arg.iter();
      StringVector usedrefs = null;
      int pos = ni.nextNode();


      while (DTM.NULL != pos)
      {
        DTM ndtm = ni.getDTM(pos);
        String refval = ndtm.getStringValue(pos).toString();


        pos = ni.nextNode();
        usedrefs = getNodesByID(xctxt, docContext, refval, usedrefs, nodeSet,
                                DTM.NULL != pos);
      }
      // ni.detach();
    }
    else if (XObject.CLASS_NULL == argType)
    {
      return nodes;
    }
    else
    {
      String refval = arg.str();


      getNodesByID(xctxt, docContext, refval, null, nodeSet, false);
    }


    return nodes;

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        xpath = modifiedXPath;
        
        //p("******** valueOf: modified xpath: " + xpath);


        XObject result = JSTLXPathAPI.eval( contextNode, xpath,
        jstlPrefixResolver,xpathSupport, varVector);


        
        //p("******Result TYPE => " + result.getTypeString() );
        
        String resultString = result.str();
        //p("******** valueOf: after eval: " + resultString);
        
        return resultString;
    
    }

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        Vector varVector = fillVarStack(vs, xpathSupport);        
        
        Node contextNode = adaptParamsForXalan( vs, n, xpath.trim() );
        xpath = modifiedXPath;
        
        XObject result = JSTLXPathAPI.eval( contextNode, xpath,
        jstlPrefixResolver, xpathSupport, varVector);
        
        try {
            return result.bool();
        } catch (TransformerException ex) {
            throw new JspTagException(
                Resources.getMessage("XPATH_ERROR_XOBJECT", ex.toString()), ex);            
        }
    }

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