public static UserList getUserList() throws SearchLibException {
usersLock.r.lock();
try {
if (userList == null) {
File userFile = new File(StartStopListener.OPENSEARCHSERVER_DATA_FILE, "users.xml");
if (userFile.exists()) {
XPathParser xpp = new XPathParser(userFile);
userList = UserList.fromXml(xpp, xpp.getNode("/" + UserList.usersElement));
} else userList = new UserList();
}
return userList;
} catch (ParserConfigurationException e) {
throw new SearchLibException(e);
} catch (SAXException e) {
throw new SearchLibException(e);
} catch (IOException e) {
throw new SearchLibException(e);
} catch (XPathExpressionException e) {
throw new SearchLibException(e);
} finally {
usersLock.r.unlock();
}
}
public Boolean evalBoolean(String expression) {
return xpathParser.evalBoolean(node, expression);
}
public String evalString(String expression) {
return xpathParser.evalString(node, expression);
}
public XNode evalNode(String expression) {
return xpathParser.evalNode(node, expression);
}
public List<XNode> evalNodes(String expression) {
return xpathParser.evalNodes(node, expression);
}
public Double evalDouble(String expression) {
return xpathParser.evalDouble(node, expression);
}