Hi, Any hints on this topic? How to access String / Text values from a multiValued field inside custom function?
Best regards, Dariusz Wojtas On Thu, Jan 3, 2019 at 6:18 PM Dariusz Wojtas <dwoj...@gmail.com> wrote: > Hi, > > I am using SOLR 7.5 in the cloud mode. > I want to create a custom function similar to 'strdist' that works on > multivalued fields (multiValued=true) and finds the highest matching score. > Yes, I know the potential performance issues, but in my usecase this would > bring a huge benefit. > > There is not much information on how to work with multiValued fields, but > I have found a piece of code that might be useful. It's how SOLR standard > functions are registered: > > https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/search/ValueSourceParser.java > > The interesting part for me starts in line 424, when the 'field' function > is registered. > It optionally accepts a multivalue field for min/max calculation. > If the 2nd argument is 'min' or 'max' it tries to resolve the field as > SchemaField. > SchemaField f = fp.getReq().getSchema().getField(fieldName); > > Now the questions are: > 1. Is this the path I should follow? If not - are there any other ways? > 2. How to retrieve all the actual *String *or *Text *values from a > multivalue field, not just a single value? Some kind of a table or set of > values. How? > 3. Does cloud mode change anything here? In my case the whole index is on > a single machine, but there are several replicas. > > Best regards, > Dariusz Wojtas > >
