Move netconf{-client,impl,util} to protocol/

[netconf.git] / protocol / netconf-util / src / main / java / org / opendaylight / netconf / util / xml / XMLNetconfUtil.java

diff --git a/protocol/netconf-util/src/main/java/org/opendaylight/netconf/util/xml/XMLNetconfUtil.java b/protocol/netconf-util/src/main/java/org/opendaylight/netconf/util/xml/XMLNetconfUtil.java
new file mode 100644 (file)
index 0000000..25493ee
--- /dev/null
+++ b/protocol/netconf-util/src/main/java/org/opendaylight/netconf/util/xml/XMLNetconfUtil.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.netconf.util.xml;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathExpression;
+import javax.xml.xpath.XPathExpressionException;
+import javax.xml.xpath.XPathFactory;
+import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
+
+public final class XMLNetconfUtil {
+    private static final XPathFactory FACTORY = XPathFactory.newInstance();
+    private static final NamespaceContext NS_CONTEXT = new HardcodedNamespaceResolver("netconf",
+        XmlNetconfConstants.URN_IETF_PARAMS_XML_NS_NETCONF_BASE_1_0);
+
+    private XMLNetconfUtil() {
+        // Hidden on purpose
+    }
+
+    public static XPathExpression compileXPath(final String xpath) {
+        final XPath newXPath = FACTORY.newXPath();
+        newXPath.setNamespaceContext(NS_CONTEXT);
+        try {
+            return newXPath.compile(xpath);
+        } catch (final XPathExpressionException e) {
+            throw new IllegalStateException("Error while compiling xpath expression " + xpath, e);
+        }
+    }
+
+}