org.archive.wayback.surt
Class SURTTokenizer

java.lang.Object
  org.archive.wayback.surt.SURTTokenizer

public class SURTTokenizer
extends Object

provides iterative Url reduction for prefix matching to find ever coarser grained URL-specific configuration. Assumes that a prefix binary search is being attempted for each returned value. First value is the entire SURT url String, with TAB appended. Second removes CGI ARGs. Then each subsequent path segment ('/' separated) is removed. Then the login:password, if present is removed. Then the port, if not :80 or omitted on the initial URL. Then each subsequent authority segment(. separated) is removed. the nextSearch() method will return null, finally, when no broader searches can be attempted on the URL.

Version:

$Date: 2010-09-29 05:28:38 +0700 (Wed, 29 Sep 2010) $, $Revision: 3262 $

Author:

brad

Constructor Summary

SURTTokenizer(String url)
constructor

Method Summary

static String	exactKey(String url)
String	nextSearch() update internal state and return the next smaller search string for the url
static String	prefixKey(String url)

Methods inherited from class java.lang.Object

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

Constructor Detail

SURTTokenizer

public SURTTokenizer(String url)
              throws org.apache.commons.httpclient.URIException

constructor

Parameters:

url - String URL

Throws:

org.apache.commons.httpclient.URIException

Method Detail

nextSearch

public String nextSearch()

update internal state and return the next smaller search string for the url

Returns:

string to lookup for prefix match for relevant information.

exactKey

public static String exactKey(String url)
                       throws org.apache.commons.httpclient.URIException

Parameters:

url -

Returns:

String SURT which will match exactly argument url

Throws:

org.apache.commons.httpclient.URIException

prefixKey

public static String prefixKey(String url)
                        throws org.apache.commons.httpclient.URIException

Parameters:

url -

Returns:

String SURT which will match urls prefixed with the argument url

Throws:

org.apache.commons.httpclient.URIException