Hello, this is a repost. This message was originally posted on the 'general' list but it was suggested, that the 'user' list might be a better place to ask.
---- Original Message ---- Hi, we are passing a multivalued field to the LanguageIdentifierUpdateProcessor. This multivalued field contains arbitrary types (Integer, String, Date). Now, the LanguageIdentifierUpdateProcessor.concatFields(SolrInputDocument doc, String[] fields), which btw does not use the parameter fields, is unable to parse all fields of the/a multivalued field. The call "Object content = doc.getFieldValue(fieldName);" does not care what type the field is and just delegates to SolrInputDocument which in turn calls getFirstValue. So, two issues: First - if the first value of the multivalued field is not of type String, the field is ignored completely. Second - the concat method does not concat all values of a multivalued field. While http://www.mail-archive.com/solr-user@lucene.apache.org/msg90530.html states: "The feature is designed to detect exactly one language per field. In case of multivalued, it will concatenate all values before detection." But as far as I can see, the code is unable to do this at all for multivalued fields. This behavior was found in 4.3 but the code is still the same for current trunk (as of 2013-11-26) Is this a bug? Is this a special design decision? Did we miss a certain configuration, that would allow the Language identification to use all values of a multivalued field? We are about to write our own LangDetectLanguageIdentifierUpdateProcessorFactory (why is the getInstance hardcoded to return LanguageIdentifierUpdateProcessor?) and overwrite LanguageIdentifierUpdateProcessor to handle all values of a multivalued field, ignoring non-string values. Please see configuration below. I hope I was able to make myself clear. I'd like to hear your thoughts on this, before I go off and file a bug report. Regards, Stephan A little background: We are using a 3rd-party CMS framework which pulls in some magic SOLR configuration (namely the textbody field). The textbody field is defined as follows: <!-- The default text search field. This field and the field name_tokenized are used as default search fields for the /editor and /cmdismax search request handlers in solrconfig.xml. For the Content Feeder the text of all indexed fields of the CoreMedia document is stored in this field. The CAE Feeder by default stores the text of all elements in this field. --> <field name="textbody" type="text_general" stored="false" multiValued="true"/> As you can see, it is also used as search field, therefor we want to have the actual datatypes on the values. The field itself is generated by a processor, prior to calling the language identification (see processor chain). The processor chain: <updateRequestProcessorChain> <!-- Improve error messages --> <processor class="3rdpartypackage.ErrorHandlingProcessorFactory" /> <!-- Blob extraction --> <processor class="3rdpartypackage.BinaryDataProcessorFactory"> <!-- some comments --> </processor> <!-- Textbody handling --> <processor class="3rdpartypackage.TextBodyProcessorFactory" /> <!-- Copy content of field name to name_tokenized --> <processor class="solr.CloneFieldUpdateProcessorFactory"> <str name="source">name</str> <str name="dest">name_tokenized</str> </processor> <!--Language detection --> <processor class="org.apache.solr.update.processor.LangDetectLanguageIdentifierUpdateProcessorFactory"> <str name="langid.fl">textbody,name_tokenized</str> <str name="langid.langField">language</str> <str name="langid.fallback">en</str> </processor> <!-- Index into language dependent fields if defined (e.g. textbody_en instead of textbody) --> <processor class="3rdpartypackage.solr.update.processor.LanguageDependentFieldsProcessorFactory"> <str name="languageField">language</str> <str name="textFields">textbody,name_tokenized</str> </processor> <processor class="solr.RunUpdateProcessorFactory" /> </updateRequestProcessorChain>
