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    <title>YaCy '#[clientname]#': Index Sources &amp; Targets</title>
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    <h2>Index Sources &amp; Targets</h2>
    <p>
      YaCy supports multiple index storage locations.
      As an internal indexing database a deep-embedded multi-core Solr is used and it is possible to attach also a remote Solr.
    </p>
    
    <form id="config" action="IndexFederated_p.html" method="post" enctype="multipart/form-data" accept-charset="UTF-8">
      <fieldset>
      <legend>Solr Search Index</legend>
      Solr stores the main search index. It is the home of two cores, the default 'collection1' core for documents and the 'webgraph' core for a web structure graph. Detailed information about the used Solr fields can be edited in the <a href="IndexSchema_p.html">Schema Editor</a>.
      <dl>
      
      <dt class="TableCellDark">Lazy Value Initialization&nbsp;<input type="checkbox" name="solr.indexing.lazy" id="solr.indexing.lazy" #(solr.indexing.lazy.checked)#:: checked="checked"#(/solr.indexing.lazy.checked)# /></dt>
      <dd>If checked, only non-zero values and non-empty strings are written to Solr fields.</dd>
        
      <dt>&nbsp;</dt><dd>&nbsp;</dd>
      <dt>Use deep-embedded local Solr&nbsp;<input type="checkbox" name="core.service.fulltext" id="core_service_fulltext" #(core.service.fulltext.checked)#:: checked="checked"#(/core.service.fulltext.checked)# onclick="if(!document.getElementById('config').core_service_fulltext.checked) {document.getElementById('config').solr_indexing_solrremote.checked = true;}"/></dt>
      <dd>
      This will write the YaCy-embedded Solr index which stored within the YaCy DATA directory.<br/>
      The Solr native search interface is accessible at<br/>
      <a href="solr/select?q=*:*&start=0&rows=3&core=collection1">/solr/select?q=*:*&amp;start=0&amp;rows=3&amp;core=collection1</a>
      for the default search index (core: collection1) and at<br/>
      <a href="solr/select?q=*:*&start=0&rows=3&core=webgraph">/solr/select?q=*:*&amp;start=0&amp;rows=3&amp;core=webgraph</a> for the webgraph core.<br/>
      If you switch off this index, a remote Solr must be activated.</dd>
      
      <dt>Use remote Solr server(s)&nbsp;<input type="checkbox" name="solr.indexing.solrremote" id="solr_indexing_solrremote" #(solr.indexing.solrremote.checked)#:: checked="checked"#(/solr.indexing.solrremote.checked)# onclick="if(!document.getElementById('config').solr_indexing_solrremote.checked) {document.getElementById('config').core_service_fulltext.checked = true;}"/></dt>
      <dd>It's easy to <a href="http://www.yacy-websearch.net/wiki/index.php/Dev:Solr" target="_blank">attach an external Solr to YaCy</a>.
      This external Solr can be used instead the internal Solr. It can also be used additionally to the internal Solr, then both Solr indexes are mirrored. 
      </dd>	
      
      #(table)#::
        <dt class="TableCellDark">&nbsp;</dt>
        <dd>Solr Hosts<br/>
      <div>
      <table class="sortable" border="0">
      <tr class="TableHeader" valign="bottom">
        <td><strong>Solr Host Administration Interface</strong><br/></td>
        <td><strong>Index Size</strong></td>
      </tr>
      #{list}#
      <tr class="TableCell#(dark)#Light::Dark::Summary#(/dark)#">
        <td><a href="#[url]#" target="_blank">#[url]#</a></td>
        <td align="right">#[size]#</td>
      </tr>
      #{/list}#
      </table>
      </div>
        </dd>
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      <dt class="TableCellDark"></dt>
      <dd>Solr URL(s)<br/><textarea rows="2" cols="80" name="solr.indexing.url" id="solr.indexing.url"/>#[solr.indexing.url]#</textarea><br/>
      You can set one or more Solr targets here which are accessed as a shard. For several targets, list them using a ',' (comma) as separator.
      The set of remote targets are used as shard of a complete index. The host part of the url is used as key for a hash function which selects one of the shards (one of your remote servers).
      When a search request is made, all servers are accessed synchronously and the result is combined.</dd>
        
      <dt class="TableCellDark"></dt>
      <dd>Sharding Method<br/>
      <select id="solr.indexing.sharding" name="solr.indexing.sharding">
          #{solr.indexing.sharding.methods}#
            <option value="#[method]#" #(selected)#::selected="selected"#(/selected)#>#[method]#: #[description]#</option>
          #{/solr.indexing.sharding.methods}#
      </select></dd>

      <dt class="TableCellDark"></dt>
      <dd><input type="checkbox" name="solr.indexing.solrremote.writeenabled" id="solr_indexing_solrremote_writeenabled" #(solr.indexing.solrremote.writeenabled.checked)#:: checked="checked"#(/solr.indexing.solrremote.writeenabled.checked)#/> write-enabled (if unchecked, the remote server(s) will only be used as search peers)</dd>

      <dt><input type="submit" name="setsolr" value="Set" /></dt><dd></dd>

      </dd>
      </dl>
      </fieldset>
    </form>
    
    <form id="config" action="IndexFederated_p.html" method="get" enctype="multipart/form-data" accept-charset="UTF-8">
      <fieldset>
      <legend>
        Web Structure Index
      </legend>
      The web structure index is used for host browsing (to discover the internal file/folder structure), ranking (counting the number of references) and file search (there are about fourty times more links from loaded pages as in documents of the main search index). 
      <dl>
      
      <dt><input type="checkbox" name="core.service.citation.tmp" id="core_service_citation" #(core.service.citation.tmp.checked)#:: checked="checked"#(/core.service.citation.tmp.checked)# /></dt>
      <dd>use citation reference index (lightweight and fast)</dd>
      
      <dt><input type="checkbox" name="core.service.webgraph.tmp" id="core_service_webgraph" #(core.service.webgraph.tmp.checked)#:: checked="checked"#(/core.service.webgraph.tmp.checked)# /></dt>
      <dd>use webgraph search index (rich information in second Solr core)</dd>
      
      <dt><input type="submit" name="setcitation" value="Set" /></dt><dd></dd>
      </dl>
      </fieldset>
    </form>
      
    <form id="config" action="IndexFederated_p.html" method="get" enctype="multipart/form-data" accept-charset="UTF-8">
      <fieldset>
      <legend>
        Peer-to-Peer Operation
      </legend>
      The 'RWI' (Reverse Word Index) is necessary for index transmission in distributed mode. For portal or intranet mode this must be switched off.
      <dl>
      
      <dt><input type="checkbox" name="core.service.rwi" id="core_service_rwi" #(core.service.rwi.checked)#:: checked="checked"#(/core.service.rwi.checked)# /></dt>
      <dd>support peer-to-peer index transmission (DHT RWI index)</dd>
      
      <dt><input type="submit" name="setrwi" value="Set" /></dt><dd></dd>
      </dl>
      </fieldset>
    </form>
    
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