Hi Kydryavtsev Thanks a lot it works, but how do i pass a multivalued field values to a function query?
Can it be passed as a String array? Thanks & Regards Mukund On Tue, Dec 10, 2013 at 12:05 PM, Kydryavtsev Andrey <werde...@yandex.ru>wrote: > You can implement it in this way: > Index number of cities as new int field (like <field > name="numberOfCities">2</field>) and implement user function like > > "customFunction(price, numberOfCities, 10000, 2000, 5)" > > Custom parser should parse this into value sources list. From first two > field sources we can get per doc value for this particular fields, another > three will be ConstValueSource instances - just constants, so we can access > all 5 values and implement custom formula per doc id. Find examples in > ValueSourceParser and solr functions like DefFunction or MinFloatFunction > > 10.12.2013, 09:31, "Mukundaraman valakumaresan" <muk...@8kmiles.com>: > > Hi Hoss, > > > > Thanks a lot for your response. The actual problem is, > > > > For every record that I query, I have to execute a formula and sort the > > records based on the value of the formula. > > The formula has elements from the record. > > > > For eg. for the following document ,I need to apply the formula > (maxprice - > > solrprice)/ (maxprice - minprice) + count(cities)/totalcities. > > where maxprice, maxprice and total cities will be available at run time. > > > > So for the following record, it has to execute as (10000 - > > *5000*)/(10000-2000) > > + *2*/5 (where 5000 and 2, which are in bold are from the document) > > > > <doc> > > <field name="id">apartment_1</field> > > <field name="name">Casa Grande</field> > > <field name="locality">chennai</field> > > <field name="locality">bangalore</field> > > <field name="price">5000</field> > > </doc> > > > > Thanks & Regards > > Mukund > > > > On Tue, Dec 10, 2013 at 12:22 AM, Chris Hostetter > > <hossman_luc...@fucit.org>wrote: > > > >> Smells like an XY problem ... > >> > >> Can you please describe what your end goal is in writing a custom > >> function, and what you would do with things like the "name" field > inside > >> your funciton? > >> > >> In general, accessing stored field values for indexed documents ca be > >> prohibitively expensive, it rather defeats the entire point of the > >> inverted index data structure. If you help us understand what your > goal > >> is, people may be able to offer performant suggestions. > >> > >> https://people.apache.org/~hossman/#xyproblem > >> XY Problem > >> > >> Your question appears to be an "XY Problem" ... that is: you are > dealing > >> with "X", you are assuming "Y" will help you, and you are asking about > "Y" > >> without giving more details about the "X" so that we can understand the > >> full issue. Perhaps the best solution doesn't involve "Y" at all? > >> See Also: http://www.perlmonks.org/index.pl?node_id=542341 > >> > >> : Date: Mon, 9 Dec 2013 20:24:15 +0530 > >> : From: Mukundaraman valakumaresan <muk...@8kmiles.com> > >> : Reply-To: solr-user@lucene.apache.org > >> : To: solr-user@lucene.apache.org > >> : Subject: Getting Solr Document Attributes from a Custom Function > >> : > >> : Hi All, > >> : > >> : I have a written a custom solr function and I would like to read a > >> property > >> : of the document inside my custom function. Is it possible to get that > >> using > >> : Solr? > >> : > >> : For eg. inside the floatVal method, I would like to get the value of > the > >> : attribute "name" > >> : > >> : public class CustomValueSource extends ValueSource { > >> : > >> : @Override > >> : public FunctionValues getValues(Map context, > >> : AtomicReaderContext readerContext) throws IOException { > >> : return new FloatDocValues(this) { @Override public float > floatVal(int > >> doc) > >> : { > >> : /******* > >> : getDocument(doc).getAttribute("name") > >> : > >> : ********/ }}} > >> : > >> : Thanks & Regards > >> : Mukund > >> : > >> > >> -Hoss > >> http://www.lucidworks.com/ >
