OpenSearch

OpenSearch Dr. Harry Chen CMSC 491S/691S March 12, 2008

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

OpenSearch ,[object Object],[object Object],[object Object]

Typical OpenSearch Model OpenSearch Client OpenSearch Services

Communication OpenSearch Client (e.g., a9.com) OpenSearch Services (e.g., IMDB) Query string (plain text) Search results (HTML) HTTP GET request http://foo.com/os?q=stuff HTTP Response RSS/Atom (XML) You

OpenSearch != Meta-Search Engine ,[object Object],[object Object],[object Object]

Key Features Autodiscovery Search Result Description Search URL Template Service Description OpenSearch

Service Description ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.opensearch.org/Specifications/OpenSearch/1.1/Draft_3#OpenSearch_description_elements

An Example ,[object Object],* Defined in gnizr Open Source ** In our gnizr installation: http://eb1.cs.umbc.edu:8080/gnizr/settings/opensearch/yahoo-searchdescription.xml

Publishing the Service Description ,[object Object],[object Object],[object Object],[object Object],[object Object]

Found a Service, Now what? ,[object Object],[object Object]

Decoding the URL Template ,[object Object],[object Object],[object Object],[object Object],[object Object]

An Yahoo! example Place your search query here. (e.g., java) Where you want the index to start for the matching search results (e.g., 1)

Other Terms in the URL Template ,[object Object],[object Object],[object Object],[object Object],[object Object],http://www.opensearch.org/Specifications/OpenSearch/1.1/Draft_3#OpenSearch_1.1_parameters

Try-it-yourself ,[object Object]

Reading the Search Result ,[object Object],[object Object]

Result in RSS 2.0 Atom vocab. is used to “point to” the service description URL

How to Announce the Service ,[object Object],[object Object]

In HTML Pages http://www.opensearch.org/Specifications/OpenSearch/1.1

In RSS feeds http://www.opensearch.org/Specifications/OpenSearch/1.1

An Autodiscovery Example In Firefox, whenever you see a “blueish” icon means an OpenSearch service is discovered. http://en.wikipedia.org/wiki/Opensearch

How Wikipedia Implements OpenSearch http://en.wikipeida.org  view source Service Description Doc http://en.wikipedia.org/w/opensearch_desc.php

Try-it-yourself ,[object Object],Do you know how to compose a search request for Wikipedia?

What’s this? a different URL for getting search term suggestions!

OpenSearch dev in Firefox ,[object Object]

Summary ,[object Object],[object Object],[object Object],http://opensearch.org

OpenSearch

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