schema.xml

<?xml version="1.0" encoding="UTF-8" ?>
<schema name="example clicks core" version="1.1">

 <fields>
    <field name="time_stamp" type="date" indexed="true" stored="true" required="true" />
    <field name="fromDocID" type="int" indexed="true" stored="true" required="true" />
    <field name="toDocID" type="int" indexed="true" stored="true" required="true" />
    <field name="qstr" type="text_general" indexed="true" stored="true" />
    <field name="parser_type" type="text_general" indexed="true" stored="true" />
    <field name="userID" type="int" indexed="true" stored="true" />
    <field name="user_interests" type="text_general" indexed="true" stored="true" multiValued="true"/>
    <field name="to_doc_category" type="int" indexed="true" stored="true" />
    <field name="to_click_posn" type="int" indexed="true" stored="true" />
    <field name="_version_" type="long" indexed="true" stored ="true"/>
 </fields>

 <defaultSearchField>toID</defaultSearchField>

 <types>
    <fieldType name="int" class="solr.TrieIntField" precisionStep="0" />
    <fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
    <fieldType name="long" class="solr.TrieLongField" precisionStep="0" />
    <fieldType name="date" class="solr.TrieDateField" omitNorms="true"/>
 </types>

</schema>