org.apache.mahout.cf.taste.web

Class RecommenderServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.apache.mahout.cf.taste.web.RecommenderServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public final class RecommenderServlet
extends javax.servlet.http.HttpServlet

A servlet which returns recommendations, as its name implies. The servlet accepts GET and POST HTTP requests, and looks for two parameters:

• userID: the user ID for which to produce recommendations
• howMany: the number of recommendations to produce
• debug: (optional) output a lot of information that is useful in debugging. Defaults to false, of course.

The response is text, and contains a list of the IDs of recommended items, in descending order of relevance, one per line.

For example, you can get 10 recommendations for user 123 from the following URL (assuming you are running taste in a web application running locally on port 8080):
http://localhost:8080/taste/RecommenderServlet?userID=123&howMany=10

This servlet requires one init-param in web.xml: it must find a parameter named "recommender-class" which is the name of a class that implements Recommender and has a no-arg constructor. The servlet will instantiate and use this Recommender to produce recommendations.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RecommenderServlet()

Method Summary

Methods

Modifier and Type	Method and Description
void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
void	init(javax.servlet.ServletConfig config)
String	toString()

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RecommenderServlet

public RecommenderServlet()

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

doGet

public void doGet(javax.servlet.http.HttpServletRequest request,
         javax.servlet.http.HttpServletResponse response)
           throws javax.servlet.ServletException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

doPost

public void doPost(javax.servlet.http.HttpServletRequest request,
          javax.servlet.http.HttpServletResponse response)
            throws javax.servlet.ServletException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

toString

public String toString()

Overrides:

toString in class Object