Package org.apache.xpath

Examples of org.apache.xpath.XPathContext$XPathExpressionContext


   */
  public void transformSelectedNodes(TransformerImpl transformer)
            throws TransformerException
  {

    final XPathContext xctxt = transformer.getXPathContext();
    final int sourceNode = xctxt.getCurrentNode();
    DTMIterator sourceNodes = m_selectExpression.asIterator(xctxt, sourceNode);
    VariableStack vars = xctxt.getVarStack();
    int nParams = getParamElemCount();
    int thisframe = vars.getStackFrame();
    StackGuard guard = transformer.getStackGuard();
    boolean check = (guard.getRecursionLimit() > -1) ? true : false;
   
    boolean pushContextNodeListFlag = false;
     
    try
    {

            xctxt.pushCurrentNode(DTM.NULL);
            xctxt.pushCurrentExpressionNode(DTM.NULL);
            xctxt.pushSAXLocatorNull();
            transformer.pushElemTemplateElement(null);
      final Vector keys = (m_sortElems == null)
                          ? null
                          : transformer.processSortKeys(this, sourceNode);

      // Sort if we need to.
      if (null != keys)
        sourceNodes = sortNodes(xctxt, keys, sourceNodes);
           
      if (transformer.getDebug())
      {
        transformer.getTraceManager().fireSelectedEvent(sourceNode, this,
                "select", new XPath(m_selectExpression),
                new org.apache.xpath.objects.XNodeSet(sourceNodes));
      }

      final SerializationHandler rth = transformer.getSerializationHandler();
//      ContentHandler chandler = rth.getContentHandler();
      final StylesheetRoot sroot = transformer.getStylesheet();
      final TemplateList tl = sroot.getTemplateListComposed();
      final boolean quiet = transformer.getQuietConflictWarnings();
     
      // Should be able to get this from the iterator but there must be a bug.
      DTM dtm = xctxt.getDTM(sourceNode);
     
      int argsFrame = -1;
      if(nParams > 0)
      {
        // This code will create a section on the stack that is all the
        // evaluated arguments.  These will be copied into the real params
        // section of each called template.
        argsFrame = vars.link(nParams);
        vars.setStackFrame(thisframe);
       
        for (int i = 0; i < nParams; i++)
        {
          ElemWithParam ewp = m_paramElems[i];
          if (transformer.getDebug())
            transformer.getTraceManager().fireTraceEvent(ewp);
          XObject obj = ewp.getValue(transformer, sourceNode);
          if (transformer.getDebug())
            transformer.getTraceManager().fireTraceEndEvent(ewp);
         
          vars.setLocalVariable(i, obj, argsFrame);
        }
        vars.setStackFrame(argsFrame);
      }
     
      xctxt.pushContextNodeList(sourceNodes);
      pushContextNodeListFlag = true;
     
      IntStack currentNodes = xctxt.getCurrentNodeStack();
     
      IntStack currentExpressionNodes = xctxt.getCurrentExpressionNodeStack();    
     
      // pushParams(transformer, xctxt);
     
      int child;
      while (DTM.NULL != (child = sourceNodes.nextNode()))
      {
        currentNodes.setTop(child);
        currentExpressionNodes.setTop(child);

        if(xctxt.getDTM(child) != dtm)
        {
          dtm = xctxt.getDTM(child);
        }
       
        final int exNodeType = dtm.getExpandedTypeID(child);

        final int nodeType = dtm.getNodeType(child);

        final QName mode = transformer.getMode();

        ElemTemplate template = tl.getTemplateFast(xctxt, child, exNodeType, mode,
                                      -1, quiet, dtm);

        // If that didn't locate a node, fall back to a default template rule.
        // See http://www.w3.org/TR/xslt#built-in-rule.
        if (null == template)
        {
          switch (nodeType)
          {
          case DTM.DOCUMENT_FRAGMENT_NODE :
          case DTM.ELEMENT_NODE :
            template = sroot.getDefaultRule();
            // %OPT% direct faster?
            break;
          case DTM.ATTRIBUTE_NODE :
          case DTM.CDATA_SECTION_NODE :
          case DTM.TEXT_NODE :
            // if(rth.m_elemIsPending || rth.m_docPending)
            //  rth.flushPending(true);
            transformer.pushPairCurrentMatched(sroot.getDefaultTextRule(), child);
            transformer.setCurrentElement(sroot.getDefaultTextRule());
            // dtm.dispatchCharactersEvents(child, chandler, false);
            dtm.dispatchCharactersEvents(child, rth, false);
            transformer.popCurrentMatched();
            continue;
          case DTM.DOCUMENT_NODE :
            template = sroot.getDefaultRootRule();
            break;
          default :

            // No default rules for processing instructions and the like.
            continue;
          }
        }
        else
        {
          transformer.setCurrentElement(template);
        }
               
        transformer.pushPairCurrentMatched(template, child);
        if (check)
          guard.checkForInfinateLoop();

        int currentFrameBottom;  // See comment with unlink, below
        if(template.m_frameSize > 0)
        {
          xctxt.pushRTFContext();
          currentFrameBottom = vars.getStackFrame()// See comment with unlink, below
          vars.link(template.m_frameSize);
          // You can't do the check for nParams here, otherwise the
          // xsl:params might not be nulled.
          if(/* nParams > 0 && */ template.m_inArgsSize > 0)
          {
            int paramIndex = 0;
            for (ElemTemplateElement elem = template.getFirstChildElem();
                 null != elem; elem = elem.getNextSiblingElem())
            {
              if(Constants.ELEMNAME_PARAMVARIABLE == elem.getXSLToken())
              {
                ElemParam ep = (ElemParam)elem;
               
                int i;
                for (i = 0; i < nParams; i++)
                {
                  ElemWithParam ewp = m_paramElems[i];
                  if(ewp.m_qnameID == ep.m_qnameID)
                  {
                    XObject obj = vars.getLocalVariable(i, argsFrame);
                    vars.setLocalVariable(paramIndex, obj);
                    break;
                  }
                }
                if(i == nParams)
                  vars.setLocalVariable(paramIndex, null);
              }
              else
                break;
              paramIndex++;
            }
           
          }
        }
        else
          currentFrameBottom = 0;

        // Fire a trace event for the template.
        if (transformer.getDebug())
          transformer.getTraceManager().fireTraceEvent(template);

        // And execute the child templates.
        // Loop through the children of the template, calling execute on
        // each of them.
        for (ElemTemplateElement t = template.m_firstChild;
             t != null; t = t.m_nextSibling)
        {
          xctxt.setSAXLocator(t);
          try
          {
            transformer.pushElemTemplateElement(t);
            t.execute(transformer);
          }
          finally
          {
            transformer.popElemTemplateElement();
          }
        }
       
        if (transformer.getDebug())
        transformer.getTraceManager().fireTraceEndEvent(template);
     
        if(template.m_frameSize > 0)
        {
          // See Frank Weiss bug around 03/19/2002 (no Bugzilla report yet).
          // While unlink will restore to the proper place, the real position
          // may have been changed for xsl:with-param, so that variables
          // can be accessed. 
          // of right now.
          // More:
          // When we entered this function, the current
          // frame buffer (cfb) index in the variable stack may
          // have been manually set.  If we just call
          // unlink(), however, it will restore the cfb to the
          // previous link index from the link stack, rather than
          // the manually set cfb.  So,
          // the only safe solution is to restore it back
          // to the same position it was on entry, since we're
          // really not working in a stack context here. (Bug4218)
          vars.unlink(currentFrameBottom);
          xctxt.popRTFContext();
        }
         
        transformer.popCurrentMatched();
       
      } // end while (DTM.NULL != (child = sourceNodes.nextNode()))
    }
    catch (SAXException se)
    {
      transformer.getErrorListener().fatalError(new TransformerException(se));
    }
    finally
    {
      if (transformer.getDebug())
        transformer.getTraceManager().fireSelectedEndEvent(sourceNode, this,
                "select", new XPath(m_selectExpression),
                new org.apache.xpath.objects.XNodeSet(sourceNodes));
     
      // Unlink to the original stack frame 
      if(nParams > 0)
        vars.unlink(thisframe);
      xctxt.popSAXLocator();
      if (pushContextNodeListFlag) xctxt.popContextNodeList();
      transformer.popElemTemplateElement();
      xctxt.popCurrentExpressionNode();
      xctxt.popCurrentNode();
      sourceNodes.detach();
    }
  }
View Full Code Here


  public void setRoot(int context, Object environment)
  {

    m_context = context;
   
    XPathContext xctxt = (XPathContext)environment;
    m_execContext = xctxt;
    m_cdtm = xctxt.getDTM(context);
   
    m_currentContextNode = context; // only if top level?
   
    // Yech, shouldn't have to do this.  -sb
    if(null == m_prefixResolver)
      m_prefixResolver = xctxt.getNamespaceContext();
       
    m_lastFetched = DTM.NULL;
    m_foundLast = false;
    m_pos = 0;
    m_length = -1;

    if (m_isTopLevel)
      this.m_stackFrame = xctxt.getVarStack().getStackFrame();
     
    // reset();
  }
View Full Code Here

      {
        // restore serializer fields
         rtf.setNamespaceMappings((NamespaceMappings)m_nsSupport.clone());
      }

      XPathContext xpc = transformer.getXPathContext();

      xpc.setVarStack((VariableStack) m_variableStacks.clone());
      xpc.setCurrentNodeStack((IntStack) m_currentNodes.clone());
      xpc.setCurrentExpressionNodeStack(
        (IntStack) m_currentExpressionNodes.clone());
      xpc.setContextNodeListsStack((Stack) m_contextNodeLists.clone());

      if (m_contextNodeList != null)
        xpc.pushContextNodeList((DTMIterator) m_contextNodeList.clone());

      xpc.setAxesIteratorStackStacks((Stack) m_axesIteratorStack.clone());

      transformer.m_currentTemplateRuleIsNull =
        (BoolStack) m_currentTemplateRuleIsNull.clone();
      transformer.m_currentTemplateElements =
        (ObjectStack) m_currentTemplateElements.clone();
View Full Code Here

       if (transformer.getDebug())
         transformer.getTraceManager().fireTraceEvent(this);

   SerializationHandler rhandler = transformer.getSerializationHandler();
    XPathContext xctxt = transformer.getXPathContext();
    int sourceNode = xctxt.getCurrentNode();
   
   
    String nodeName = m_name_avt == null ? null : m_name_avt.evaluate(xctxt, sourceNode, this);

    String prefix = null;
View Full Code Here

    if (transformer.getDebug())
      transformer.getTraceManager().fireTraceEvent(this);

    try
    {
      XPathContext xctxt = transformer.getXPathContext();
      int sourceNode = xctxt.getCurrentNode();
      XObject value = m_selectExpression.execute(xctxt, sourceNode, this);

      if (transformer.getDebug())
        transformer.getTraceManager().fireSelectedEvent(sourceNode, this,
                                                        "select", m_selectExpression, value);

      SerializationHandler handler = transformer.getSerializationHandler();

      if (null != value)
                        {
        int type = value.getType();
        String s;

        switch (type)
        {
        case XObject.CLASS_BOOLEAN :
        case XObject.CLASS_NUMBER :
        case XObject.CLASS_STRING :
          s = value.str();

          handler.characters(s.toCharArray(), 0, s.length());
          break;
        case XObject.CLASS_NODESET :

          // System.out.println(value);
          DTMIterator nl = value.iter();

          // Copy the tree.
          DTMTreeWalker tw = new TreeWalker2Result(transformer, handler);
          int pos;

          while (DTM.NULL != (pos = nl.nextNode()))
          {
            DTM dtm = xctxt.getDTMManager().getDTM(pos);
            short t = dtm.getNodeType(pos);

            // If we just copy the whole document, a startDoc and endDoc get
            // generated, so we need to only walk the child nodes.
            if (t == DTM.DOCUMENT_NODE)
View Full Code Here

      }
     
      ElemExsltFunction elemFunc = getFunction(extFunction.getFunctionName());
     
      if (null != elemFunc) {
        XPathContext context = exprContext.getXPathContext();
        TransformerImpl transformer = (TransformerImpl)context.getOwnerObject();
        transformer.pushCurrentFuncResult(null);

        elemFunc.execute(transformer, methodArgs);

        XObject val = (XObject)transformer.popCurrentFuncResult();
View Full Code Here

  {

    try
    {
      SerializationHandler rtreeHandler = transformer.getResultTreeHandler();
      XPathContext xctxt = transformer.getXPathContext();
      XObject value;

      // Make the return object into an XObject because it
      // will be easier below.  One of the reasons to do this
      // is to keep all the conversion functionality in the
      // XObject classes.
      if (obj instanceof XObject)
      {
        value = (XObject) obj;
      }
      else if (obj instanceof String)
      {
        value = new XString((String) obj);
      }
      else if (obj instanceof Boolean)
      {
        value = new XBoolean(((Boolean) obj).booleanValue());
      }
      else if (obj instanceof Double)
      {
        value = new XNumber(((Double) obj).doubleValue());
      }
      else if (obj instanceof DocumentFragment)
      {
        int handle = xctxt.getDTMHandleFromNode((DocumentFragment)obj);
       
        value = new XRTreeFrag(handle, xctxt);
      }
      else if (obj instanceof DTM)
      {
        DTM dtm = (DTM)obj;
        DTMIterator iterator = new DescendantIterator();
        // %%ISSUE%% getDocument may not be valid for DTMs shared by multiple
        // document trees, eg RTFs. But in that case, we shouldn't be trying
        // to iterate over the whole DTM; we should be iterating over
        // dtm.getDocumentRoot(rootNodeHandle), and folks should have told us
        // this by passing a more appropriate type.
        iterator.setRoot(dtm.getDocument(), xctxt);
        value = new XNodeSet(iterator);
      }
      else if (obj instanceof DTMAxisIterator)
      {
        DTMAxisIterator iter = (DTMAxisIterator)obj;
        DTMIterator iterator = new OneStepIterator(iter, -1);
        value = new XNodeSet(iterator);
      }
      else if (obj instanceof DTMIterator)
      {
        value = new XNodeSet((DTMIterator) obj);
      }
      else if (obj instanceof NodeIterator)
      {
        value = new XNodeSet(new org.apache.xpath.NodeSetDTM(((NodeIterator)obj), xctxt));
      }
      else if (obj instanceof org.w3c.dom.Node)
      {
        value =
          new XNodeSet(xctxt.getDTMHandleFromNode((org.w3c.dom.Node) obj),
                       xctxt.getDTMManager());
      }
      else
      {
        value = new XString(obj.toString());
      }
View Full Code Here

                int nAttrs = m_avts.size();

                for (int i = (nAttrs - 1); i >= 0; i--)
                {
                    AVT avt = (AVT) m_avts.get(i);
                    XPathContext xctxt = transformer.getXPathContext();
                    int sourceNode = xctxt.getCurrentNode();
                    String stringedValue =
                        avt.evaluate(xctxt, sourceNode, this);

                    if (null != stringedValue)
                    {
View Full Code Here

    super();

    m_transformer = transformer;
    m_baseSystemID = baseSystemID;

    XPathContext xctxt = transformer.getXPathContext();
    DTM dtm = xctxt.getDTM(null, true, transformer, true, true);
   
    m_dtm = dtm;
    dtm.setDocumentBaseURI(baseSystemID);

    m_contentHandler = dtm.getContentHandler();
View Full Code Here

   */
  public static double max(ExpressionContext myContext, NodeList nl, String expr)
    throws SAXNotSupportedException
  {

    XPathContext xctxt = null;
    if (myContext instanceof XPathContext.XPathExpressionContext)
      xctxt = ((XPathContext.XPathExpressionContext) myContext).getXPathContext();
    else
      throw new SAXNotSupportedException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_CONTEXT_PASSED, new Object[]{myContext }));

    if (expr == null || expr.length() == 0)
      return Double.NaN;
     
    NodeSetDTM contextNodes = new NodeSetDTM(nl, xctxt);
    xctxt.pushContextNodeList(contextNodes);
   
    double maxValue = - Double.MAX_VALUE;
    for (int i = 0; i < contextNodes.getLength(); i++)
    {
      int contextNode = contextNodes.item(i);
      xctxt.pushCurrentNode(contextNode);
     
      double result = 0;
      try
      {
        XPath dynamicXPath = new XPath(expr, xctxt.getSAXLocator(),
                                       xctxt.getNamespaceContext(),
                                       XPath.SELECT);
        result = dynamicXPath.execute(xctxt, contextNode, xctxt.getNamespaceContext()).num();
      }
      catch (TransformerException e)
      {
        xctxt.popCurrentNode();
        xctxt.popContextNodeList();
        return Double.NaN;
      }
     
      xctxt.popCurrentNode();
             
      if (result > maxValue)
          maxValue = result;
    }     
     
    xctxt.popContextNodeList();
    return maxValue;
       
  }
View Full Code Here

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