conf/schema.xml

<?xml version="1.0" encoding="UTF-8" ?>
    <!--
        Licensed to the Apache Software Foundation (ASF) under one or
        more contributor license agreements. See the NOTICE file
        distributed with this work for additional information regarding
        copyright ownership. The ASF licenses this file to You under the
        Apache License, Version 2.0 (the "License"); you may not use
        this file except in compliance with the License. You may obtain
        a copy of the License at
        http://www.apache.org/licenses/LICENSE-2.0 Unless required by
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        under the License is distributed on an "AS IS" BASIS, WITHOUT
        WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
        See the License for the specific language governing permissions
        and limitations under the License.
    -->
    <!--
        Description: This document contains Solr 3.1 schema definition to
        be used with Solr integration currently build into Nutch. See
        https://issues.apache.org/jira/browse/NUTCH-442
        https://issues.apache.org/jira/browse/NUTCH-699
        https://issues.apache.org/jira/browse/NUTCH-994
        https://issues.apache.org/jira/browse/NUTCH-997
        https://issues.apache.org/jira/browse/NUTCH-1058
        and
        http://svn.apache.org/viewvc/lucene/dev/branches/branch_3x/solr/
        example/solr/conf/schema.xml?view=markup
        for more info.
    -->
<schema name="nutch" version="1.5">
    <types>
        <fieldType name="string" class="solr.StrField" sortMissingLast="true"
            omitNorms="true"/> 
        <fieldType name="long" class="solr.TrieLongField" precisionStep="0"
            omitNorms="true" positionIncrementGap="0"/>
        <fieldType name="float" class="solr.TrieFloatField" precisionStep="0"
            omitNorms="true" positionIncrementGap="0"/>
        <fieldType name="date" class="solr.TrieDateField" precisionStep="0"
            omitNorms="true" positionIncrementGap="0"/>

        <fieldType name="text" class="solr.TextField"
            positionIncrementGap="100">
            <analyzer>
                <tokenizer class="solr.WhitespaceTokenizerFactory"/>
                <filter class="solr.StopFilterFactory"
                    ignoreCase="true" words="stopwords.txt"/>
                <filter class="solr.WordDelimiterFilterFactory"
                    generateWordParts="1" generateNumberParts="1"
                    catenateWords="1" catenateNumbers="1" catenateAll="0"
                    splitOnCaseChange="1"/>
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.EnglishPorterFilterFactory"
                    protected="protwords.txt"/>
                <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
            </analyzer>
        </fieldType>
        <fieldType name="url" class="solr.TextField"
            positionIncrementGap="100">
            <analyzer>
                <tokenizer class="solr.StandardTokenizerFactory"/>
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.WordDelimiterFilterFactory"
                    generateWordParts="1" generateNumberParts="1"/>
            </analyzer>
        </fieldType>
    </types>
    <fields>
        <field name="id" type="string" stored="true" indexed="true"/>

        <!-- core fields -->
        <field name="segment" type="string" stored="true" indexed="false"/>
        <field name="digest" type="string" stored="true" indexed="false"/>
        <field name="boost" type="float" stored="true" indexed="false"/>

        <!-- fields for index-basic plugin -->
        <field name="host" type="url" stored="false" indexed="true"/>
        <field name="site" type="string" stored="false" indexed="true"/>
        <field name="url" type="url" stored="true" indexed="true"
            required="true"/>
        <field name="content" type="text" stored="false" indexed="true"/>
        <field name="title" type="text" stored="true" indexed="true"/>
        <field name="cache" type="string" stored="true" indexed="false"/>
        <field name="tstamp" type="date" stored="true" indexed="false"/>

        <!-- fields for index-anchor plugin -->
        <field name="anchor" type="string" stored="true" indexed="true"
            multiValued="true"/>

        <!-- fields for index-more plugin -->
        <field name="type" type="string" stored="true" indexed="true"
            multiValued="true"/>
        <field name="contentLength" type="long" stored="true"
            indexed="false"/>
        <field name="lastModified" type="date" stored="true"
            indexed="false"/>
        <field name="date" type="date" stored="true" indexed="true"/>

        <!-- fields for languageidentifier plugin -->
        <field name="lang" type="string" stored="true" indexed="true"/>

        <!-- fields for subcollection plugin -->
        <field name="subcollection" type="string" stored="true"
            indexed="true" multiValued="true"/>

        <!-- fields for feed plugin (tag is also used by microformats-reltag)-->
        <field name="author" type="string" stored="true" indexed="true"/>
        <field name="tag" type="string" stored="true" indexed="true" multiValued="true"/>
        <field name="feed" type="string" stored="true" indexed="true"/>
        <field name="publishedDate" type="date" stored="true"
            indexed="true"/>
        <field name="updatedDate" type="date" stored="true"
            indexed="true"/>

        <!-- fields for creativecommons plugin -->
        <field name="cc" type="string" stored="true" indexed="true"
            multiValued="true"/>
    </fields>
    <uniqueKey>id</uniqueKey>
    <defaultSearchField>content</defaultSearchField>
    <solrQueryParser defaultOperator="OR"/>
</schema>