net.myrrix.web.servlets

Class PreferenceServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

net.myrrix.web.servlets.AbstractMyrrixServlet

net.myrrix.web.servlets.PreferenceServlet

All Implemented Interfaces:

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

public final class PreferenceServlet
extends AbstractMyrrixServlet

Responds to a POST request to /pref/[userID]/[itemID] and in turn calls MyrrixRecommender.setPreference(long, long, float). If the request body is empty, the value is 1.0, otherwise the value in the request body's first line is used.

Also responds to a DELETE request to the same path, with the same defaults. This corresponds to calling MyrrixRecommender.removePreference(long, long) instead.

Author:

Sean Owen

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	AVG_ESTIMATE_ERROR_KEY

Fields inherited from class net.myrrix.web.servlets.AbstractMyrrixServlet

ALL_PARTITIONS_REF_KEY, LOCAL_INPUT_DIR_KEY, PARTITION_KEY, READ_ONLY_KEY, RECOMMENDER_KEY, RESCORER_PROVIDER_KEY, TIMINGS_KEY

Constructor Summary

Constructors

Constructor and Description
PreferenceServlet()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	doDelete(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected void	doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected Long	getUnnormalizedPartitionToServe(javax.servlet.http.HttpServletRequest request)
void	init(javax.servlet.ServletConfig config)

Methods inherited from class net.myrrix.web.servlets.AbstractMyrrixServlet

getConsiderKnownItems, getHowMany, getRecommender, getRescorerParams, getRescorerProvider, getTiming, output, service

Methods inherited from class javax.servlet.http.HttpServlet

doGet, doHead, doOptions, doPut, doTrace, getLastModified, 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, toString, wait, wait, wait

Field Detail

AVG_ESTIMATE_ERROR_KEY

public static final String AVG_ESTIMATE_ERROR_KEY

Constructor Detail

PreferenceServlet

public PreferenceServlet()

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 AbstractMyrrixServlet

Throws:

javax.servlet.ServletException

doPost

protected void doPost(javax.servlet.http.HttpServletRequest request,
          javax.servlet.http.HttpServletResponse response)
               throws IOException

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

IOException

doDelete

protected void doDelete(javax.servlet.http.HttpServletRequest request,
            javax.servlet.http.HttpServletResponse response)
                 throws IOException

Overrides:

doDelete in class javax.servlet.http.HttpServlet

Throws:

IOException

getUnnormalizedPartitionToServe

protected Long getUnnormalizedPartitionToServe(javax.servlet.http.HttpServletRequest request)

Overrides:

getUnnormalizedPartitionToServe in class AbstractMyrrixServlet

Parameters:

request - request containing info that may determine which partition needs to serve it

Returns:

null if any partition may serve, or an integral value that should be used to determine the partiiton. This is usually an ID value, which will be possibly hashed and reduced modulo the number of partitions.