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jreceiver.client.rio.servlet
Class RioHostResults  

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          jreceiver.client.rio.servlet.RioHostBase
              jreceiver.client.rio.servlet.RioHostResults

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

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public class RioHostResults

extends RioHostBase

Servlet answering 'result' requests from Rio Server.

Called by the Rio Receiver to retrieve tune fileids and titles (if text)

TEXT RESPONSE

A request for text will be made with the "_extended=1" option. All other responses will be in binary -- see below.

A text request like

http://...:12078/results?artist=&_extended=1

will return results for all known artists with song titles as

160=TAll Of A Sudden (It's Too Late) 1c0=TBall And Chain 180=TEnglish Roundabout 1f0=TFly On The Wall 120=TIt's Nearly Africa 1d0=TSenses Working Overtime

The same goes if you replace 'artist' with 'title', 'source'(album) or 'genre'.

Add the exact artist name

http://...:12078/results?artist=Billie%20Holiday&_extended=1

BINARY RESPONSE

Two possibilities:

1. Two DWORDs - this is used when the query contains "_extended=0" or if no "_extended" attribute is provided:

c001000 e5655000

where the first dword contains the src_id and the second contains the filesize

2. Three DWORDs - this is used when the query contains "_extended=2"

c001000 e5655000 b5010000

where the first dword contains the src_id, the second contains the filesize, and the third contains what the mpeg data offset in the file. And you get results for only that artist. Note that the artist name has been encoded for use in the URI.

Version:

$Revision: 1.12 $ $Date: 2003/05/14 06:24:28 $

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Field Summary
protected static java.lang.String	invalid_target
protected static org.apache.commons.logging.Log	log           logging object
protected static int	TARGET_ALBUM
protected static int	TARGET_ARTIST
protected static int	TARGET_GENRE
protected static int	TARGET_TITLE
protected static java.lang.String[]	targets
protected  jreceiver.common.rpc.Tunes	tune_rpc           the server which hosts the data

 

Fields inherited from class javax.servlet.http.HttpServlet

 

Fields inherited from class javax.servlet.GenericServlet

 

Constructor Summary

RioHostResults()

 

Method Summary
protected  void	binaryResponse(javax.servlet.http.HttpServletResponse resp, byte[] pattern, int target, java.lang.String query, int rec_offset, int rec_count)           encode a response suitable retaining minimal playlist data in memory
protected  void	handleRequest(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp, int src_id)           subclasses must define this
void	init()           Init
protected  boolean	requireMfileId()           DON'T implicitly fail if no src_id is provided in the * query
protected  void	textResponse(javax.servlet.http.HttpServletResponse resp, java.lang.String pattern, int target, java.lang.String query, int rec_offset, int rec_count)           encode a response suitable for menu display

 

Methods inherited from class jreceiver.client.rio.servlet.RioHostBase

doGet

 

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, 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, toString, wait, wait, wait

 

Field Detail

tune_rpc

protected jreceiver.common.rpc.Tunes tune_rpc

the server which hosts the data

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targets

protected static final java.lang.String[] targets

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TARGET_ARTIST

protected static final int TARGET_ARTIST

See Also:

Constant Field Values

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TARGET_ALBUM

protected static final int TARGET_ALBUM

See Also:

Constant Field Values

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TARGET_GENRE

protected static final int TARGET_GENRE

See Also:

Constant Field Values

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TARGET_TITLE

protected static final int TARGET_TITLE

See Also:

Constant Field Values

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invalid_target

protected static final java.lang.String invalid_target

See Also:

Constant Field Values

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log

protected static org.apache.commons.logging.Log log

logging object

Constructor Detail

RioHostResults

public RioHostResults()

Method Detail

init

public void init()
          throws javax.servlet.ServletException

Description copied from class: RioHostBase

Init

Overrides:

init in class RioHostBase

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handleRequest

protected void handleRequest(javax.servlet.http.HttpServletRequest req,
                             javax.servlet.http.HttpServletResponse resp,
                             int src_id)
                      throws javax.servlet.ServletException,
                             java.io.IOException,
                             jreceiver.common.rpc.RpcException

subclasses must define this

Specified by:

handleRequest in class RioHostBase

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binaryResponse

protected void binaryResponse(javax.servlet.http.HttpServletResponse resp,
                              byte[] pattern,
                              int target,
                              java.lang.String query,
                              int rec_offset,
                              int rec_count)
                       throws javax.servlet.ServletException,
                              java.io.IOException,
                              jreceiver.common.rpc.RpcException

encode a response suitable retaining minimal playlist data in memory

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textResponse

protected void textResponse(javax.servlet.http.HttpServletResponse resp,
                            java.lang.String pattern,
                            int target,
                            java.lang.String query,
                            int rec_offset,
                            int rec_count)
                     throws javax.servlet.ServletException,
                            java.io.IOException,
                            jreceiver.common.rpc.RpcException

encode a response suitable for menu display

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requireMfileId

protected boolean requireMfileId()

DON'T implicitly fail if no src_id is provided in the * query

Specified by:

requireMfileId in class RioHostBase

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> jreceiver >> client >> rio >> [ servlet overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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