Hello,
I don't see which, if any, Apache Commons component
your stacktrace refers to. Are you sure you have the
right list?
br,
Matt
--- david2 <[EMAIL PROTECTED]> wrote:
>
> We have a Web Services Notification application that
> uses Muse, Xalan, and
> XML commons (we have tried both xml-apis-1.3.03.jar
> and
> xml-apis-1.3.04.jar). We are using XPath message
> pattern filtering as the
> filtering mechanism for web service notification,
> but we also require some
> custom filtering (subclassing MessagePatternFilter
> with
> ExtnMessagePatternFilter).
>
> Our ExtnMessagePatternFilter accept method is as
> follows:
>
>
> public boolean accepts(NotificationMessage message)
> {
>
> Document doc = XmlUtils.createDocument();
> logger.debug("doc = " + doc);
> Element messageXML = message.toXML(doc);
> ogger.debug("messageXML = " + messageXML);
> doc.appendChild(messageXML);
> logger.debug("appended doc = " + doc);
>
> XPathFactory factory = XPathFactory.newInstance();
> XPath xpath = factory.newXPath();
>
> CompositeNamespaceContext namespaceContext = new
> CompositeNamespaceContext();
> namespaceContext.addNamespaceContext(new
> ExtensionNamespaceContext());
> namespaceContext.addNamespaceContext(new
> SnaNamespaceContext());
>
> xpath.setNamespaceContext(namespaceContext);
>
> xpath.setXPathFunctionResolver(new
> XPathFunctionResolverImpl());
>
> try {
> boolean result =
> ((Boolean)xpath.evaluate(this._pattern, doc,
> XPathConstants.BOOLEAN)).booleanValue();
> logger.debug("result = " + result);
> return result;
> }
> catch (Exception error) {
> error.printStackTrace();
> return false;
> }
> }
>
>
> This code works fine in the Eclipse debugger using
> the Maven Dependencies
> plugin. However, when we perform a Maven build and
> deploy to Tomcat, we get
> the following exception when the XPathFactory is
> instantiated (bold line
> above):
>
>
> java.lang.NullPointerException
> at
>
javax.xml.xpath.XPathFactoryFinder._newFactory(XPathFactoryFinder.java:222)
> at
>
javax.xml.xpath.XPathFactoryFinder.newFactory(XPathFactoryFinder.java:143)
> at
>
javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:185)
> at
>
javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:99)
> at
>
com.myorg.myapp.ws.notification.impl.ExtnMessagePatternFilter.accepts(ExtnMessagePatternFilter.java:69)
> at
>
org.apache.muse.ws.notification.impl.FilterCollection.accepts(FilterCollection.java:64)
> at
>
com.myorg.myapp.ws.notification.impl.BufferedSubscriptionManager.publish(BufferedSubscriptionManager.java:73)
> at
>
com.myorg.myapp.ws.notification.impl.NewsNotificationProducer.publish(NewsNotificationProducer.java:38)
> at
>
org.apache.muse.ws.notification.impl.SimpleNotificationProducer.publish(SimpleNotificationProducer.java:420)
> at
>
com.myorg.myapp.ws.handler.DDSHandler.run(DDSHandler.java:304)
> at
>
com.myorg.commons.util.reactor.ReactorAdapter.run(ReactorAdapter.java:19)
> at
>
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> at
>
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> at java.lang.Thread.run(Thread.java:619)
>
>
> Have there been any previous issues with
> instantiating XPathFactory with
> Muse using a Maven build?
>
> -David
> --
> View this message in context:
>
http://www.nabble.com/XPathFactoryFinder.-tf4242920.html#a12073372
> Sent from the Commons - User mailing list archive at
> Nabble.com.
>
>
>
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