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

Example 31 with XPath

use of org.apache.xpath.XPath in project nokogiri by sparklemotion.

the class XmlXpathContext method tryGetNodeSet.

private IRubyObject tryGetNodeSet(ThreadContext context, String expr, NokogiriXPathFunctionResolver fnResolver) throws TransformerException {
    final Node contextNode = this.context.node;
    final JAXPPrefixResolver prefixResolver = new JAXPPrefixResolver(nsContext);
    XPath xpathInternal = new XPath(expr, null, prefixResolver, XPath.SELECT);
    // We always need to have a ContextNode with Xalan XPath implementation
    // To allow simple expression evaluation like 1+1 we are setting
    // dummy Document as Context Node
    final XObject xobj;
    if (contextNode == null)
        xobj = xpathInternal.execute(getXPathContext(fnResolver), DTM.NULL, prefixResolver);
    else
        xobj = xpathInternal.execute(getXPathContext(fnResolver), contextNode, prefixResolver);
    switch(xobj.getType()) {
        case XObject.CLASS_BOOLEAN:
            return context.getRuntime().newBoolean(xobj.bool());
        case XObject.CLASS_NUMBER:
            return context.getRuntime().newFloat(xobj.num());
        case XObject.CLASS_NODESET:
            XmlNodeSet xmlNodeSet = XmlNodeSet.create(context.getRuntime());
            xmlNodeSet.setNodeList(xobj.nodelist());
            xmlNodeSet.initialize(context.getRuntime(), this.context);
            return xmlNodeSet;
        default:
            return context.getRuntime().newString(xobj.str());
    }
}

Example 32 with XPath

use of org.apache.xpath.XPath in project intellij-community by JetBrains.

the class XalanStyleFrame method eval.

public Value eval(String expr) throws Debugger.EvaluationException {
    assert isValid();
    try {
        final DTMIterator context = myTransformer.getContextNodeList();
        final int ctx;
        final DTM dtm = context.getDTM(myCurrentNode);
        if (dtm.getDocumentRoot(myCurrentNode) == myCurrentNode) {
            ctx = dtm.getFirstChild(myCurrentNode);
        } else {
            ctx = myCurrentNode;
        }
        final DTMNodeProxy c = new DTMNodeProxy(dtm, ctx);
        final PrefixResolver prefixResolver = new PrefixResolverDefault(c) {

            public String getNamespaceForPrefix(String prefix, Node context) {
                if (context instanceof DTMNodeProxy) {
                    final DTMNodeProxy proxy = (DTMNodeProxy) context;
                    final DTM dtm = proxy.getDTM();
                    int p = proxy.getDTMNodeNumber();
                    while (p != DTM.NULL) {
                        int nsNode = dtm.getFirstNamespaceNode(p, true);
                        while (nsNode != DTM.NULL) {
                            final String s = dtm.getLocalName(nsNode);
                            if (s.equals(prefix)) {
                                return dtm.getNodeValue(nsNode);
                            }
                            nsNode = dtm.getNextNamespaceNode(p, nsNode, true);
                        }
                        p = dtm.getParent(p);
                    }
                }
                return super.getNamespaceForPrefix(prefix, context);
            }
        };
        final XPath xPath = new XPath(expr, myCurrentElement, prefixResolver, XPath.SELECT, myTransformer.getErrorListener());
        return new XObjectValue(xPath.execute(myContext, myCurrentNode, myCurrentElement));
    } catch (Exception e) {
        debug(e);
        final String message = e.getMessage();
        throw new Debugger.EvaluationException(message != null ? message : e.getClass().getSimpleName());
    }
}