Examples with XPathContext org.apache.xpath.XPathContext used on opensource projects

Example 21 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class OneStepIterator method getProximityPosition.

/**
   * Get the current sub-context position.  In order to do the
   * reverse axes count, for the moment this re-searches the axes
   * up to the predicate.  An optimization on this is to cache
   * the nodes searched, but, for the moment, this case is probably
   * rare enough that the added complexity isn't worth it.
   *
   * @param predicateIndex The predicate index of the proximity position.
   *
   * @return The pridicate index, or -1.
   */
protected int getProximityPosition(int predicateIndex) {
    if (!isReverseAxes())
        return super.getProximityPosition(predicateIndex);
    // -sb
    if (predicateIndex < 0)
        return -1;
    if (m_proximityPositions[predicateIndex] <= 0) {
        XPathContext xctxt = getXPathContext();
        try {
            OneStepIterator clone = (OneStepIterator) this.clone();
            int root = getRoot();
            xctxt.pushCurrentNode(root);
            clone.setRoot(root, xctxt);
            // clone.setPredicateCount(predicateIndex);
            clone.m_predCount = predicateIndex;
            // Count 'em all
            int count = 1;
            int next;
            while (DTM.NULL != (next = clone.nextNode())) {
                count++;
            }
            m_proximityPositions[predicateIndex] += count;
        } catch (CloneNotSupportedException cnse) {
        // can't happen
        } finally {
            xctxt.popCurrentNode();
        }
    }
    return m_proximityPositions[predicateIndex];
}

Example 22 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class ElemApplyTemplates method transformSelectedNodes.

/**
   * 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);
    VariableStack vars = xctxt.getVarStack();
    int nParams = getParamElemCount();
    int thisframe = vars.getStackFrame();
    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);
        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];
                XObject obj = ewp.getValue(transformer, sourceNode);
                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);
            // 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);
            // See comment with unlink, below
            int currentFrameBottom;
            if (template.m_frameSize > 0) {
                xctxt.pushRTFContext();
                // See comment with unlink, below
                currentFrameBottom = vars.getStackFrame();
                vars.link(template.m_frameSize);
                // 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;
            // 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 (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 {
        // 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();
    }
}

Example 23 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class ElemChoose method execute.

/**
   * Execute the xsl:choose transformation.
   *
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    boolean found = false;
    for (ElemTemplateElement childElem = getFirstChildElem(); childElem != null; childElem = childElem.getNextSiblingElem()) {
        int type = childElem.getXSLToken();
        if (Constants.ELEMNAME_WHEN == type) {
            found = true;
            ElemWhen when = (ElemWhen) childElem;
            // must be xsl:when
            XPathContext xctxt = transformer.getXPathContext();
            int sourceNode = xctxt.getCurrentNode();
            if (when.getTest().bool(xctxt, sourceNode, when)) {
                transformer.executeChildTemplates(when, true);
                return;
            }
        } else if (Constants.ELEMNAME_OTHERWISE == type) {
            found = true;
            // xsl:otherwise
            transformer.executeChildTemplates(childElem, true);
            return;
        }
    }
    if (!found)
        transformer.getMsgMgr().error(this, XSLTErrorResources.ER_CHOOSE_REQUIRES_WHEN);
}

Example 24 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class ElemCopy method execute.

/**
   * The xsl:copy element provides an easy way of copying the current node.
   * Executing this function creates a copy of the current node into the
   * result tree.
   * <p>The namespace nodes of the current node are automatically
   * copied as well, but the attributes and children of the node are not
   * automatically copied. The content of the xsl:copy element is a
   * template for the attributes and children of the created node;
   * the content is instantiated only for nodes of types that can have
   * attributes or children (i.e. root nodes and element nodes).</p>
   * <p>The root node is treated specially because the root node of the
   * result tree is created implicitly. When the current node is the
   * root node, xsl:copy will not create a root node, but will just use
   * the content template.</p>
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    XPathContext xctxt = transformer.getXPathContext();
    try {
        int sourceNode = xctxt.getCurrentNode();
        xctxt.pushCurrentNode(sourceNode);
        DTM dtm = xctxt.getDTM(sourceNode);
        short nodeType = dtm.getNodeType(sourceNode);
        if ((DTM.DOCUMENT_NODE != nodeType) && (DTM.DOCUMENT_FRAGMENT_NODE != nodeType)) {
            SerializationHandler rthandler = transformer.getSerializationHandler();
            // TODO: Process the use-attribute-sets stuff
            ClonerToResultTree.cloneToResultTree(sourceNode, nodeType, dtm, rthandler, false);
            if (DTM.ELEMENT_NODE == nodeType) {
                super.execute(transformer);
                SerializerUtils.processNSDecls(rthandler, sourceNode, nodeType, dtm);
                transformer.executeChildTemplates(this, true);
                String ns = dtm.getNamespaceURI(sourceNode);
                String localName = dtm.getLocalName(sourceNode);
                transformer.getResultTreeHandler().endElement(ns, localName, dtm.getNodeName(sourceNode));
            }
        } else {
            super.execute(transformer);
            transformer.executeChildTemplates(this, true);
        }
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    } finally {
        xctxt.popCurrentNode();
    }
}

Example 25 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class ElemCopyOf method execute.

/**
   * The xsl:copy-of element can be used to insert a result tree
   * fragment into the result tree, without first converting it to
   * a string as xsl:value-of does (see [7.6.1 Generating Text with
   * xsl:value-of]).
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    try {
        XPathContext xctxt = transformer.getXPathContext();
        int sourceNode = xctxt.getCurrentNode();
        XObject value = m_selectExpression.execute(xctxt, sourceNode, this);
        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);
                        // generated, so we need to only walk the child nodes.
                        if (t == DTM.DOCUMENT_NODE) {
                            for (int child = dtm.getFirstChild(pos); child != DTM.NULL; child = dtm.getNextSibling(child)) {
                                tw.traverse(child);
                            }
                        } else if (t == DTM.ATTRIBUTE_NODE) {
                            SerializerUtils.addAttribute(handler, pos);
                        } else {
                            tw.traverse(pos);
                        }
                    }
                    // nl.detach();
                    break;
                case XObject.CLASS_RTREEFRAG:
                    SerializerUtils.outputResultTreeFragment(handler, value, transformer.getXPathContext());
                    break;
                default:
                    s = value.str();
                    handler.characters(s.toCharArray(), 0, s.length());
                    break;
            }
        }
    // I don't think we want this.  -sb
    //  if (transformer.getDebug())
    //  transformer.getTraceManager().fireSelectedEvent(sourceNode, this,
    //  "endSelect", m_selectExpression, value);
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    }
}