private Element getDescription(String task) {
if (task != null) {
if (task.equals("define")) return definer.getDescription();
if (task.equals("compare")) return comparer.getDescription();
if (task.equals("search")) return searcher.getDescription();
if (task.equals("wikify")) return wikifier.getDescription();
}
Element description = doc.createElement("Description");
description.appendChild(
createElement(
"Details",
"<p>This servlet provides a range of services for mining information from Wikipedia. Further details depend on what you want to do.</p>"
+ "<p>You can <a href=\""
+ context.getInitParameter("service_name")
+ "?task=search&help\">search for pages</a>, <a href=\""
+ context.getInitParameter("service_name")
+ "?task=compare&help\">measure how terms or articles related to each other</a>, <a href=\""
+ context.getInitParameter("service_name")
+ "?task=define&help\">obtain short definitions from articles</a>, and <a href=\""
+ context.getInitParameter("service_name")
+ "?task=wikify&help\">detect topics in web pages</a>.</p>"));
Element paramTask =
createElement(
"Parameter",
"Specifies what you want to do: can be <em>search</em>, <em>compare</em>, <em>define</em>, or <em>wikify</em>");
paramTask.setAttribute("name", "task");
description.appendChild(paramTask);
Element paramId = doc.createElement("Parameter");
paramId.setAttribute("name", "help");
paramId.appendChild(doc.createTextNode("Specifies that you want help about the service."));
description.appendChild(paramId);
return description;
}
