NAME
WWW::Search::Metapedia - class for searching online Encyclopedias
SYNOPSIS
require WWW::Search;
$search = new WWW::Search('Metapedia');DESCRIPTION
http://www.savvysearch.com.
Silly class I made to sponge off a Encyclopedia meta search engine.
Searches multi online Encyclopedias.
Covers:
Encylopedia Britannica - paid subscription service
Encarta
Knowledge Adventure
Infoplease
This class exports no public interface; all interaction should
be done through WWW::Search objects.
SEE ALSO
To make new back-ends, see WWW::Search.
HOW DOES IT WORK?
native_setup_search is called before we do anything.
It initializes our private variables (which all begin with underscores)
and sets up a URL to the first results page in {_next_url}.
native_retrieve_some is called (from WWW::Search::retrieve_some)
whenever more hits are needed. It calls the LWP library
to fetch the page specified by {_next_url}.
It parses this page, appending any search hits it finds to
{cache}. If it finds a ``next'' button in the text,
it sets {_next_url} to point to the page for the next
set of results, otherwise it sets it to undef to indicate we're done.
AUTHOR
Jim Smyser <jsmyser@bigfoot.com>
COPYRIGHT
Copyright (c) 1996-1998 University of Southern California.
All rights reserved.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation, advertising
materials, and other materials related to such distribution and use
acknowledge that the software was developed by the University of
Southern California, Information Sciences Institute. The name of the
University may not be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.