Examples with NodeIterator org.w3c.dom.traversal.NodeIterator used on opensource projects

Example 11 with NodeIterator

use of org.w3c.dom.traversal.NodeIterator in project freemarker by apache.

the class SunInternalXalanXPathSupport method executeQuery.

public synchronized TemplateModel executeQuery(Object context, String xpathQuery) throws TemplateModelException {
    if (!(context instanceof Node)) {
        if (context != null) {
            if (isNodeList(context)) {
                int cnt = ((List) context).size();
                if (cnt != 0) {
                    throw new TemplateModelException("Cannot perform an XPath query against a node set of " + cnt + " nodes. Expecting a single node." + ERRMSG_RECOMMEND_JAXEN);
                } else {
                    throw new TemplateModelException(ERRMSG_EMPTY_NODE_SET);
                }
            } else {
                throw new TemplateModelException("Cannot perform an XPath query against a " + context.getClass().getName() + ". Expecting a single org.w3c.dom.Node.");
            }
        } else {
            throw new TemplateModelException(ERRMSG_EMPTY_NODE_SET);
        }
    }
    Node node = (Node) context;
    try {
        XPath xpath = new XPath(xpathQuery, null, customPrefixResolver, XPath.SELECT, null);
        int ctxtNode = xpathContext.getDTMHandleFromNode(node);
        XObject xresult = xpath.execute(xpathContext, ctxtNode, customPrefixResolver);
        if (xresult instanceof XNodeSet) {
            NodeListModel result = new NodeListModel(node);
            result.xpathSupport = this;
            NodeIterator nodeIterator = xresult.nodeset();
            Node n;
            do {
                n = nodeIterator.nextNode();
                if (n != null) {
                    result.add(n);
                }
            } while (n != null);
            return result.size() == 1 ? result.get(0) : result;
        }
        if (xresult instanceof XBoolean) {
            return ((XBoolean) xresult).bool() ? TemplateBooleanModel.TRUE : TemplateBooleanModel.FALSE;
        }
        if (xresult instanceof XNull) {
            return null;
        }
        if (xresult instanceof XString) {
            return new SimpleScalar(xresult.toString());
        }
        if (xresult instanceof XNumber) {
            return new SimpleNumber(Double.valueOf(((XNumber) xresult).num()));
        }
        throw new TemplateModelException("Cannot deal with type: " + xresult.getClass().getName());
    } catch (TransformerException te) {
        throw new TemplateModelException(te);
    }
}

Example 12 with NodeIterator

use of org.w3c.dom.traversal.NodeIterator in project cloudstack by apache.

the class HypervisorHostHelper method removeOVFNetwork.

/**
 * removes the NetworkSection element from the {ovfString} if it is an ovf xml file
 * @param ovfString input string
 * @return like the input string but if xml elements by name {NetworkSection} removed
 */
public static String removeOVFNetwork(final String ovfString) {
    if (ovfString == null || ovfString.isEmpty()) {
        return ovfString;
    }
    try {
        final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        final Document doc = factory.newDocumentBuilder().parse(new ByteArrayInputStream(ovfString.getBytes()));
        final DocumentTraversal traversal = (DocumentTraversal) doc;
        final NodeIterator iterator = traversal.createNodeIterator(doc.getDocumentElement(), NodeFilter.SHOW_ELEMENT, null, true);
        for (Node n = iterator.nextNode(); n != null; n = iterator.nextNode()) {
            final Element e = (Element) n;
            if ("NetworkSection".equals(e.getTagName())) {
                if (e.getParentNode() != null) {
                    e.getParentNode().removeChild(e);
                }
            } else if ("rasd:Connection".equals(e.getTagName())) {
                if (e.getParentNode() != null && e.getParentNode().getParentNode() != null) {
                    e.getParentNode().getParentNode().removeChild(e.getParentNode());
                }
            }
        }
        final DOMSource domSource = new DOMSource(doc);
        final StringWriter writer = new StringWriter();
        final StreamResult result = new StreamResult(writer);
        final TransformerFactory tf = TransformerFactory.newInstance();
        final Transformer transformer = tf.newTransformer();
        transformer.transform(domSource, result);
        return writer.toString();
    } catch (SAXException | IOException | ParserConfigurationException | TransformerException e) {
        s_logger.warn("Unexpected exception caught while removing network elements from OVF:", e);
    }
    return ovfString;
}