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

Example 26 with XPathContext

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

the class TreeWalker2Result method startNode.

/**
   * Start traversal of the tree at the given node
   *
   *
   * @param node Starting node for traversal
   *
   * @throws TransformerException
   */
protected void startNode(int node) throws org.xml.sax.SAXException {
    XPathContext xcntxt = m_transformer.getXPathContext();
    try {
        if (DTM.ELEMENT_NODE == m_dtm.getNodeType(node)) {
            xcntxt.pushCurrentNode(node);
            if (m_startNode != node) {
                super.startNode(node);
            } else {
                String elemName = m_dtm.getNodeName(node);
                String localName = m_dtm.getLocalName(node);
                String namespace = m_dtm.getNamespaceURI(node);
                //xcntxt.pushCurrentNode(node);       
                // SAX-like call to allow adding attributes afterwards
                m_handler.startElement(namespace, localName, elemName);
                boolean hasNSDecls = false;
                DTM dtm = m_dtm;
                for (int ns = dtm.getFirstNamespaceNode(node, true); DTM.NULL != ns; ns = dtm.getNextNamespaceNode(node, ns, true)) {
                    SerializerUtils.ensureNamespaceDeclDeclared(m_handler, dtm, ns);
                }
                for (int attr = dtm.getFirstAttribute(node); DTM.NULL != attr; attr = dtm.getNextAttribute(attr)) {
                    SerializerUtils.addAttribute(m_handler, attr);
                }
            }
        } else {
            xcntxt.pushCurrentNode(node);
            super.startNode(node);
            xcntxt.popCurrentNode();
        }
    } catch (javax.xml.transform.TransformerException te) {
        throw new org.xml.sax.SAXException(te);
    }
}

Example 27 with XPathContext

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

the class TransformerImpl method processSortKeys.

/**
   * Get the keys for the xsl:sort elements.
   * Note: Should this go into ElemForEach?
   *
   * @param foreach Valid ElemForEach element, not null.
   * @param sourceNodeContext The current node context in the source tree,
   * needed to evaluate the Attribute Value Templates.
   *
   * @return A Vector of NodeSortKeys, or null.
   *
   * @throws TransformerException
   * @xsl.usage advanced
   */
public Vector processSortKeys(ElemForEach foreach, int sourceNodeContext) throws TransformerException {
    Vector keys = null;
    XPathContext xctxt = m_xcontext;
    int nElems = foreach.getSortElemCount();
    if (nElems > 0)
        keys = new Vector();
    // March backwards, collecting the sort keys.
    for (int i = 0; i < nElems; i++) {
        ElemSort sort = foreach.getSortElem(i);
        String langString = (null != sort.getLang()) ? sort.getLang().evaluate(xctxt, sourceNodeContext, foreach) : null;
        String dataTypeString = sort.getDataType().evaluate(xctxt, sourceNodeContext, foreach);
        if (dataTypeString.indexOf(":") >= 0)
            System.out.println("TODO: Need to write the hooks for QNAME sort data type");
        else if (!(dataTypeString.equalsIgnoreCase(Constants.ATTRVAL_DATATYPE_TEXT)) && !(dataTypeString.equalsIgnoreCase(Constants.ATTRVAL_DATATYPE_NUMBER)))
            foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_DATATYPE, dataTypeString });
        boolean treatAsNumbers = ((null != dataTypeString) && dataTypeString.equals(Constants.ATTRVAL_DATATYPE_NUMBER)) ? true : false;
        String orderString = sort.getOrder().evaluate(xctxt, sourceNodeContext, foreach);
        if (!(orderString.equalsIgnoreCase(Constants.ATTRVAL_ORDER_ASCENDING)) && !(orderString.equalsIgnoreCase(Constants.ATTRVAL_ORDER_DESCENDING)))
            foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_ORDER, orderString });
        boolean descending = ((null != orderString) && orderString.equals(Constants.ATTRVAL_ORDER_DESCENDING)) ? true : false;
        AVT caseOrder = sort.getCaseOrder();
        boolean caseOrderUpper;
        if (null != caseOrder) {
            String caseOrderString = caseOrder.evaluate(xctxt, sourceNodeContext, foreach);
            if (!(caseOrderString.equalsIgnoreCase(Constants.ATTRVAL_CASEORDER_UPPER)) && !(caseOrderString.equalsIgnoreCase(Constants.ATTRVAL_CASEORDER_LOWER)))
                foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_CASEORDER, caseOrderString });
            caseOrderUpper = ((null != caseOrderString) && caseOrderString.equals(Constants.ATTRVAL_CASEORDER_UPPER)) ? true : false;
        } else {
            caseOrderUpper = false;
        }
        keys.addElement(new NodeSortKey(this, sort.getSelect(), treatAsNumbers, descending, langString, caseOrderUpper, foreach));
    }
    return keys;
}

Example 28 with XPathContext

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

the class TransformerImpl method transformToRTF.

/**
   * Given a stylesheet element, create a result tree fragment from it's
   * contents.
   * @param templateParent The template element that holds the fragment.
   * @param dtmFrag The DTM to write the RTF into
   * @return the NodeHandle for the root node of the resulting RTF.
   *
   * @throws TransformerException
   * @xsl.usage advanced
   */
private int transformToRTF(ElemTemplateElement templateParent, DTM dtmFrag) throws TransformerException {
    XPathContext xctxt = m_xcontext;
    ContentHandler rtfHandler = dtmFrag.getContentHandler();
    // Obtain the ResultTreeFrag's root node.
    // NOTE: In SAX2RTFDTM, this value isn't available until after
    // the startDocument has been issued, so assignment has been moved
    // down a bit in the code.
    // not yet reliably = dtmFrag.getDocument();
    int resultFragment;
    // Save the current result tree handler.
    SerializationHandler savedRTreeHandler = this.m_serializationHandler;
    // And make a new handler for the RTF.
    ToSAXHandler h = new ToXMLSAXHandler();
    h.setContentHandler(rtfHandler);
    h.setTransformer(this);
    // Replace the old handler (which was already saved)
    m_serializationHandler = h;
    // use local variable for the current handler
    SerializationHandler rth = m_serializationHandler;
    try {
        rth.startDocument();
        // startDocument is "bottlenecked" in RTH. We need it acted upon immediately,
        // to set the DTM's state as in-progress, so that if the xsl:variable's body causes
        // further RTF activity we can keep that from bashing this DTM.
        rth.flushPending();
        try {
            // Do the transformation of the child elements.
            executeChildTemplates(templateParent, true);
            // Make sure everything is flushed!
            rth.flushPending();
            // Get the document ID. May not exist until the RTH has not only
            // received, but flushed, the startDocument, and may be invalid
            // again after the document has been closed (still debating that)
            // ... so waiting until just before the end seems simplest/safest. 
            resultFragment = dtmFrag.getDocument();
        } finally {
            rth.endDocument();
        }
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    } finally {
        // Restore the previous result tree handler.
        this.m_serializationHandler = savedRTreeHandler;
    }
    return resultFragment;
}

Example 29 with XPathContext

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

the class ElemForEach 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);
    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);
        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);
            // each of them.
            for (ElemTemplateElement t = this.m_firstChild; t != null; t = t.m_nextSibling) {
                xctxt.setSAXLocator(t);
                transformer.setCurrentElement(t);
                t.execute(transformer);
            }
            // 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 {
        xctxt.popSAXLocator();
        xctxt.popContextNodeList();
        transformer.popElemTemplateElement();
        xctxt.popCurrentExpressionNode();
        xctxt.popCurrentNode();
        sourceNodes.detach();
    }
}

Example 30 with XPathContext

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

the class ElemIf method execute.

/**
   * Conditionally execute a sub-template.
   * The expression is evaluated and the resulting object is converted
   * to a boolean as if by a call to the boolean function. If the result
   * is true, then the content template is instantiated; otherwise, nothing
   * is created.
   *
   * @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();
    int sourceNode = xctxt.getCurrentNode();
    if (m_test.bool(xctxt, sourceNode, this)) {
        transformer.executeChildTemplates(this, true);
    }
}