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OpenSearchServer is a powerful, enterprise-class, search engine program. Using the web user interface, the crawlers (web, file, database, ...) and the REST/RESTFul API you will be able to integrate quickly and easily advanced full-text search capabilities in your application. OpenSearchServer runs on Windows and Linux/Unix/BSD.

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<?xml version="1.0" encoding="UTF-8"?>
<!-- License Agreement for OpenSearchServer -->
<!-- Copyright (C) 2012 Emmanuel Keller / Jaeksoft -->
<!-- http://www.open-search-server.com -->
<!-- This file is part of OpenSearchServer. -->
<!-- OpenSearchServer is free software: you can redistribute it and/or modify 
	it under the terms of the GNU General Public License as published by the 
	Free Software Foundation, either version 3 of the License, or (at your option) 
	any later version. OpenSearchServer is distributed in the hope that it will 
	be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
	Public License for more details. You should have received a copy of the GNU 
	General Public License along with Jaeksoft Open Search Server. If not, see 
	<http://www.gnu.org/licenses/>. -->
<configuration>
	<indices>
		<index name="autocompletion" searchCache="100" filterCache="100"
			fieldCache="500" />
	</indices>
	<schema>
		<analyzers>
			<analyzer name="AutocompletionAnalyzer" lang="">
				<tokenizer class="KeywordTokenizer" />
				<filter class="LowerCaseFilter" />
				<filter class="ISOLatin1AccentFilter" />
				<filter class="EdgeNGramFilter" max_gram="200" min_gram="1"
					scope="QUERY_INDEX" side="front" />
			</analyzer>
			<analyzer name="ClusterAnalyzer" lang="">
				<tokenizer class="KeywordTokenizer" />
				<filter class="LowerCaseFilter" />
				<filter class="ISOLatin1AccentFilter" />
			</analyzer>
			<analyzer name="FreqFilterAnalyzer" lang="">
				<tokenizer class="KeywordTokenizer" />
				<filter class="NumberFormatFilter" numberFormat="0000000000"
					scope="QUERY_INDEX" />
			</analyzer>
		</analyzers>
		<fields default="term">
			<field name="term" indexed="yes" stored="yes" termVector="no"
				analyzer="AutocompletionAnalyzer" />
			<field name="cluster" indexed="yes" stored="no" termVector="no"
				analyzer="ClusterAnalyzer" />
			<field name="freq" indexed="yes" stored="no" termvector="no"
				analyzer="FreqFilterAnalyzer" />
		</fields>
	</schema>
	<requests>
		<request name="search" defaultOperator="and" start="0" rows="0"
			allowLeadingWildcard="yes" collapseMode="cluster" collapseType="optimized"
			collapseField="cluster" collapseMax="1">
			<query>term:("$$")</query>
			<returnFields>term</returnFields>
			<sort>
				<field name="freq" direction="desc" />
			</sort>
		</request>
	</requests>
</configuration>