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 package org.apache.solr.update.processor;
 
 /*
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  * 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 applicable law or agreed to in writing, software
 * distributed 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.
 */
Identifies the language of a set of input fields using Tika's LanguageIdentifier. The tika-core-x.y.jar must be on the classpath

The UpdateProcessorChain config entry can take a number of parameters which may also be passed as HTTP parameters on the update request and override the defaults. Here is the simplest processor config possible:

 <processor class="org.apache.solr.update.processor.TikaLanguageIdentifierUpdateProcessorFactory">
   <str name="langid.fl">title,text</str>
   <str name="langid.langField">language_s</str>
 </processor>
 
See http://wiki.apache.org/solr/LanguageDetection

Since:
3.5
  protected SolrParams defaults;
  protected SolrParams appends;
  protected SolrParams invariants;
  public void inform(SolrCore core) {
  }

  
The UpdateRequestProcessor may be initialized in solrconfig.xml similarly to a RequestHandler, with defaults, appends and invariants.

Parameters:
args a NamedList with the configuration parameters
  @SuppressWarnings("rawtypes")
  public void initNamedList args )
  {
    if (args != null) {
      Object o;
      o = args.get("defaults");
      if (o != null && o instanceof NamedList) {
         = SolrParams.toSolrParams((NamedListo);
      } else {
         = SolrParams.toSolrParams(args);
      }
      o = args.get("appends");
      if (o != null && o instanceof NamedList) {
         = SolrParams.toSolrParams((NamedListo);
      }
      o = args.get("invariants");
      if (o != null && o instanceof NamedList) {
         = SolrParams.toSolrParams((NamedListo);
      }
    }
  }
                                            SolrQueryResponse rspUpdateRequestProcessor next) {
    // Process defaults, appends and invariants if we got a request
    if(req != null) {
      SolrPluginUtils.setDefaults(req);
    }
    return new TikaLanguageIdentifierUpdateProcessor(reqrspnext);
  }
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