opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/xml/XMLNetconfUtil.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.controller.netconf.util.xml;
  10
  11 import javax.xml.xpath.XPath;
  12 import javax.xml.xpath.XPathExpression;
  13 import javax.xml.xpath.XPathExpressionException;
  14 import javax.xml.xpath.XPathFactory;
  15
  16 public final class XMLNetconfUtil {
  17
  18     private XMLNetconfUtil() {}
  19
  20     public static XPathExpression compileXPath(String xPath) {
  21         final XPathFactory xPathfactory = XPathFactory.newInstance();
  22         final XPath xpath = xPathfactory.newXPath();
  23         xpath.setNamespaceContext(new HardcodedNamespaceResolver("netconf",
  24                 XmlNetconfConstants.RFC4741_TARGET_NAMESPACE));
  25         try {
  26             return xpath.compile(xPath);
  27         } catch (final XPathExpressionException e) {
  28             throw new IllegalStateException("Error while compiling xpath expression " + xPath, e);
  29         }
  30     }
  31
  32 }