Michael Wechner wrote:
Sandy Polanski wrote:
I second that. Is there anyone that can give us some tips on how to
use the OpenSearchServlet? I'd really like to see a standalone Java
program that would allow me to see the results in RSS format that I
can call from the "./bin/nutch" executable.
I guess the bin/nutch resp. some other program (maybe based on
NutchBean) should return a RSS feed which then can be pulled/parsed by
the OpenSearchServlet. The question is does something like this
already exist within Nutch and if not is somebody writing something
like this
(for instance myself ;-) but I would rather wait if somebody might
answer the "exist" question ...
Folks,
As the name itself suggests, the servlet needs a servlet container to
run. If you build a standard WAR you will get among others the
OpenSearchServlet included in the WAR, under <contextPath>/opensearch.
Deploy this WAR to your favorite servlet container, e.g. Tomcat, and you
are ready to go.
This is a REST-type service, which means that you send it requests as
standard HTTP GET-s with parameters in the URL, and as a response you
get an XML document.
Example request:
http://localhost:8081/nutch/opensearch?query=cnn
Example response:
<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:nutch="http://www.nutch.org/opensearchrss/1.0/";
xmlns:opensearch="http://a9.com/-/spec/opensearchrss/1.0/"; version="2.0">
<channel>
<title>Nutch: cnn</title>
<description>Nutch search results for query: cnn</description>
<link>http://localhost:8081/nutch/search.jsp?query=cnn&start=0&hitsPerDup=2&hitsPerPage=10</link>
<opensearch:totalResults>1</opensearch:totalResults>
<opensearch:startIndex>0</opensearch:startIndex>
<opensearch:itemsPerPage>10</opensearch:itemsPerPage>
<nutch:query>cnn</nutch:query>
<item>
<title>CNN.com - Breaking News, U.S., World, Weather, Entertainment & Video
News</title>
<description><span class="ellipsis"> ... </span>the world Instant Access <span class="highlight">CNN</span> International Live newscasts
and<span class="ellipsis"> ... </span>Pipeline Overnight Live feeds from <span class="highlight">CNN</span> and its global<span
class="ellipsis"> ... </span></description>
<link>http://www.cnn.com/</link>
<nutch:site>www.cnn.com</nutch:site>
<nutch:cache>http://localhost:8081/nutch/cached.jsp?idx=0&id=0</nutch:cache>
<nutch:explain>http://localhost:8081/nutch/explain.jsp?idx=0&id=0&query=cnn&lang=null</nutch:explain>
<nutch:segment>20060817135307</nutch:segment>
<nutch:digest>6e5e1ede359a88f11fc564cf22f79305</nutch:digest>
<nutch:boost>2.5735338</nutch:boost>
</item>
</channel>
</rss>
--
Best regards,
Andrzej Bialecki <><
___. ___ ___ ___ _ _ __________________________________
[__ || __|__/|__||\/| Information Retrieval, Semantic Web
___|||__|| \| || | Embedded Unix, System Integration
http://www.sigram.com Contact: info at sigram dot com
