Example usage for org.jdom2.xpath XPathBuilder XPathBuilder

Introduction

In this page you can find the example usage for org.jdom2.xpath XPathBuilder XPathBuilder.

Prototype

public XPathBuilder(String expression, Filter<T> filter) 

Source Link

Document

Create a skeleton XPathBuilder with the given expression and result filter.

Usage

From source file:ca.nrc.cadc.vosi.avail.CheckWebService.java

License:Open Source License

void checkReturnedXml(String strXml) throws CheckException {
    Document doc;/*from  w ww .  jav  a 2  s.c  om*/
    String xpathStr;

    try {
        StringReader reader = new StringReader(strXml);
        doc = XmlUtil.buildDocument(reader, schemaMap);

        //get namespace and/or prefix from Document, then create xpath based on the prefix
        String nsp = doc.getRootElement().getNamespacePrefix(); //Namespace Prefix
        if (nsp != null && nsp.length() > 0)
            nsp = nsp + ":";
        else
            nsp = "";
        xpathStr = "/" + nsp + "availability/" + nsp + "available";
        XPathBuilder<Element> builder = new XPathBuilder<Element>(xpathStr, Filters.element());
        Namespace ns = Namespace.getNamespace(VOSI.NS_PREFIX, VOSI.AVAILABILITY_NS_URI);
        builder.setNamespace(ns);
        XPathExpression<Element> xpath = builder.compileWith(XPathFactory.instance());
        Element eleAvail = xpath.evaluateFirst(doc);
        log.debug(eleAvail);
        String textAvail = eleAvail.getText();

        // TODO: is this is actually valid? is the content not constrained by the schema?
        if (textAvail == null)
            throw new CheckException(wsURL + " output is invalid: no content in <available> element", null);

        if (!textAvail.equalsIgnoreCase("true")) {
            xpathStr = "/" + nsp + "availability/" + nsp + "note";
            builder = new XPathBuilder<Element>(xpathStr, Filters.element());
            builder.setNamespace(ns);
            xpath = builder.compileWith(XPathFactory.instance());
            Element eleNotes = xpath.evaluateFirst(doc);

            String textNotes = eleNotes.getText();
            throw new CheckException("service " + wsURL + " is not available, reported reason: " + textNotes,
                    null);
        }
    } catch (IOException e) {
        // probably an incorrect setup or bug in the checks
        throw new RuntimeException("failed to test " + wsURL, e);
    } catch (JDOMException e) {
        throw new CheckException(wsURL + " output is invalid", e);
    }
}

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From source file:com.c4om.utils.xmlutils.XMLLibsShortcuts.java

License:Apache License

/**
 * Simple method that performs a XPath query over elements
 * @param <T> The type of the XPath result.
 * @param path the path/*from   ww w  .  ja v  a 2 s  . c  o  m*/
 * @param context a context node
 * @param filter an appropiate filter. Its type will be the one of the result
 * @param namespaces namespaces made available to XPath engine
 * @return the list of results
 */
public static <T> List<T> performJAXENXPath(String path, Object context, Filter<T> filter,
        Collection<Namespace> namespaces) {
    XPathBuilder<T> builder = new XPathBuilder<>(path, filter);
    if (namespaces != null) {
        builder.setNamespaces(namespaces);
    }
    XPathExpression<T> xpathExpression = builder.compileWith(XPATH_FACTORY);
    List<T> xpathResults = xpathExpression.evaluate(context);
    return xpathResults;
}

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