Exemplo n.º 1
0
  /**
   * Execute the xsl:for-each transformation
   *
   * @param transformer non-null reference to the the current transform-time state.
   * @throws TransformerException
   */
  public void execute(TransformerImpl transformer) throws TransformerException {

    transformer.pushCurrentTemplateRuleIsNull(true);
    if (transformer.getDebug())
      transformer.getTraceManager().fireTraceEvent(this); // trigger for-each element event

    try {
      transformSelectedNodes(transformer);
    } finally {
      if (transformer.getDebug()) transformer.getTraceManager().fireTraceEndEvent(this);
      transformer.popCurrentTemplateRuleIsNull();
    }
  }
  /**
   * Execute a variable declaration and push it onto the variable stack.
   *
   * @see <a href="http://www.w3.org/TR/xslt#variables">variables in XSLT Specification</a>
   * @param transformer non-null reference to the the current transform-time state.
   * @throws javax.xml.transform.TransformerException
   */
  public void execute(TransformerImpl transformer) throws TransformerException {

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

    int sourceNode = transformer.getXPathContext().getCurrentNode();

    XObject var = getValue(transformer, sourceNode);

    // transformer.getXPathContext().getVarStack().pushVariable(m_qname, var);
    transformer.getXPathContext().getVarStack().setLocalVariable(m_index, var);

    if (transformer.getDebug()) transformer.getTraceManager().fireTraceEndEvent(this);
  }
Exemplo n.º 3
0
 /*  45:    */
 /*  46:    */ public void execute(TransformerImpl transformer)
     /*  47:    */ throws TransformerException
       /*  48:    */ {
   /*  49:110 */ if (transformer.getDebug()) {
     /*  50:111 */ transformer.getTraceManager().fireTraceEvent(this);
     /*  51:    */ }
   /*  52:    */ try
   /*  53:    */ {
     /*  54:115 */ if (hasFallbackChildren()) {
       /*  55:116 */ executeFallbacks(transformer);
       /*  56:    */ }
     /*  57:    */ }
   /*  58:    */ catch (TransformerException e)
   /*  59:    */ {
     /*  60:122 */ transformer.getErrorListener().fatalError(e);
     /*  61:    */ }
   /*  62:124 */ if (transformer.getDebug()) {
     /*  63:125 */ transformer.getTraceManager().fireTraceEndEvent(this);
     /*  64:    */ }
   /*  65:    */ }
Exemplo n.º 4
0
  /**
   * Execute the xsl:comment transformation
   *
   * @param transformer non-null reference to the the current transform-time state.
   * @throws TransformerException
   */
  public void execute(TransformerImpl transformer) throws TransformerException {
    if (transformer.getDebug()) transformer.getTraceManager().fireTraceEvent(this);
    try {
      // Note the content model is:
      // <!ENTITY % instructions "
      // %char-instructions;
      // | xsl:processing-instruction
      // | xsl:comment
      // | xsl:element
      // | xsl:attribute
      // ">
      String data = transformer.transformToString(this);

      transformer.getResultTreeHandler().comment(data);
    } catch (org.xml.sax.SAXException se) {
      throw new TransformerException(se);
    } finally {
      if (transformer.getDebug()) transformer.getTraceManager().fireTraceEndEvent(this);
    }
  }
  /**
   * Get the XObject representation of the variable.
   *
   * @param transformer non-null reference to the the current transform-time state.
   * @param sourceNode non-null reference to the <a
   *     href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>.
   * @return the XObject representation of the variable.
   * @throws javax.xml.transform.TransformerException
   */
  public XObject getValue(TransformerImpl transformer, int sourceNode) throws TransformerException {

    XObject var;
    XPathContext xctxt = transformer.getXPathContext();

    xctxt.pushCurrentNode(sourceNode);

    try {
      if (null != m_selectPattern) {
        var = m_selectPattern.execute(xctxt, sourceNode, this);

        var.allowDetachToRelease(false);

        if (transformer.getDebug())
          transformer
              .getTraceManager()
              .fireSelectedEvent(sourceNode, this, "select", m_selectPattern, var);
      } else if (null == getFirstChildElem()) {
        var = XString.EMPTYSTRING;
      } else {

        // Use result tree fragment.
        // Global variables may be deferred (see XUnresolvedVariable) and hence
        // need to be assigned to a different set of DTMs than local variables
        // so they aren't popped off the stack on return from a template.
        int df;

        // Bugzilla 7118: A variable set via an RTF may create local
        // variables during that computation. To keep them from overwriting
        // variables at this level, push a new variable stack.
        ////// PROBLEM: This is provoking a variable-used-before-set
        ////// problem in parameters. Needs more study.
        try {
          ////////// xctxt.getVarStack().link(0);
          if (m_parentNode instanceof Stylesheet) // Global variable
          df = transformer.transformToGlobalRTF(this);
          else df = transformer.transformToRTF(this);
        } finally {
          ////////////// xctxt.getVarStack().unlink();
        }

        var = new XRTreeFrag(df, xctxt, this);
      }
    } finally {
      xctxt.popCurrentNode();
    }

    return var;
  }
Exemplo n.º 6
0
  /**
   * Perform a query if needed, and call transformNode for each child.
   *
   * @param transformer non-null reference to the the current transform-time state.
   * @throws TransformerException Thrown in a variety of circumstances.
   * @xsl.usage advanced
   */
  public void transformSelectedNodes(TransformerImpl transformer) throws TransformerException {

    final XPathContext xctxt = transformer.getXPathContext();
    final int sourceNode = xctxt.getCurrentNode();
    DTMIterator sourceNodes = m_selectExpression.asIterator(xctxt, sourceNode);

    try {

      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()) {

        // The original code, which is broken for bug#16889,
        // which fails to get the original select expression in the select event.
        /*  transformer.getTraceManager().fireSelectedEvent(
         *    sourceNode,
         *            this,
         *            "select",
         *            new XPath(m_selectExpression),
         *            new org.apache.xpath.objects.XNodeSet(sourceNodes));
         */

        // The following code fixes bug#16889
        // Solution: Store away XPath in setSelect(Xath), and use it here.
        // Pass m_xath, which the current node is associated with, onto the TraceManager.

        Expression expr = m_xpath.getExpression();
        org.apache.xpath.objects.XObject xObject = expr.execute(xctxt);
        int current = xctxt.getCurrentNode();
        transformer.getTraceManager().fireSelectedEvent(current, this, "select", m_xpath, xObject);
      }

      xctxt.pushCurrentNode(DTM.NULL);

      IntStack currentNodes = xctxt.getCurrentNodeStack();

      xctxt.pushCurrentExpressionNode(DTM.NULL);

      IntStack currentExpressionNodes = xctxt.getCurrentExpressionNodeStack();

      xctxt.pushSAXLocatorNull();
      xctxt.pushContextNodeList(sourceNodes);
      transformer.pushElemTemplateElement(null);

      // pushParams(transformer, xctxt);
      // Should be able to get this from the iterator but there must be a bug.
      DTM dtm = xctxt.getDTM(sourceNode);
      int docID = sourceNode & DTMManager.IDENT_DTM_DEFAULT;
      int child;

      while (DTM.NULL != (child = sourceNodes.nextNode())) {
        currentNodes.setTop(child);
        currentExpressionNodes.setTop(child);

        if ((child & DTMManager.IDENT_DTM_DEFAULT) != docID) {
          dtm = xctxt.getDTM(child);
          docID = child & DTMManager.IDENT_DTM_DEFAULT;
        }

        // final int exNodeType = dtm.getExpandedTypeID(child);
        final int nodeType = dtm.getNodeType(child);

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

        // And execute the child templates.
        // Loop through the children of the template, calling execute on
        // each of them.
        for (ElemTemplateElement t = this.m_firstChild; t != null; t = t.m_nextSibling) {
          xctxt.setSAXLocator(t);
          transformer.setCurrentElement(t);
          t.execute(transformer);
        }

        if (transformer.getDebug()) {
          // We need to make sure an old current element is not
          // on the stack.  See TransformerImpl#getElementCallstack.
          transformer.setCurrentElement(null);
          transformer.getTraceManager().fireTraceEndEvent(this);
        }

        // KLUGE: Implement <?xalan:doc_cache_off?>
        // ASSUMPTION: This will be set only when the XPath was indeed
        // a call to the Document() function. Calling it in other
        // situations is likely to fry Xalan.
        //
        // %REVIEW% We need a MUCH cleaner solution -- one that will
        // handle cleaning up after document() and getDTM() in other
        // contexts. The whole SourceTreeManager mechanism should probably
        // be moved into DTMManager rather than being explicitly invoked in
        // FuncDocument and here.
        if (m_doc_cache_off) {
          if (DEBUG)
            System.out.println(
                "JJK***** CACHE RELEASE *****\n" + "\tdtm=" + dtm.getDocumentBaseURI());
          // NOTE: This will work because this is _NOT_ a shared DTM, and thus has
          // only a single Document node. If it could ever be an RTF or other
          // shared DTM, this would require substantial rework.
          xctxt.getSourceTreeManager().removeDocumentFromCache(dtm.getDocument());
          xctxt.release(dtm, false);
        }
      }
    } finally {
      if (transformer.getDebug())
        transformer
            .getTraceManager()
            .fireSelectedEndEvent(
                sourceNode,
                this,
                "select",
                new XPath(m_selectExpression),
                new org.apache.xpath.objects.XNodeSet(sourceNodes));

      xctxt.popSAXLocator();
      xctxt.popContextNodeList();
      transformer.popElemTemplateElement();
      xctxt.popCurrentExpressionNode();
      xctxt.popCurrentNode();
      sourceNodes.detach();
    }
  }