Hi Vinay, You can customize the FacetsComponent. Basically FacetComponent uses SimpleFacets to compute the facet count. It passes matched docset present in responsebuilder to SimpleFacets's constructor.
1. Build a mapping between parent space and auxiliary document space in (say an int array) and cache it in your own custom cache in SolrIndexSearcher. You will need to rebuild this mapping on every commit have to define a CacheRegenerator for that. 2. You can map the matched docset (which is in parent space) to auxiliary document space. The catch is that facets from non matching auxililary docs also would be counted. 3. You can then pass on this mapped auxiliary document to SimpleFacets for faceting. I have doing something similar for our needs .. Basically, we have a parent document with text attributes and changes very less. And we have child documents with inventory attributes which changes extremely fast. The search results requires child documents but faceting has to be done on text attributes which belong to parents. So we do this mapping by customizing the FacetComponent. On 18 July 2014 04:11, Vinay B, <vybe3...@gmail.com> wrote: > Some Background info : > In our application, we have a requirement to update large number of records > often. I investigated solr child documents but it requires updating both > the child and the parent document . Therefore, I'm investigating adding > frequently updated information in an "auxillary document" with a custom > defined "parent-id" field that can be used to join with the static "parent > document". - basically rolling my own child document functionality. > > This approach has satisfied all my requirements, except one. How can I > facet upon a field present in the auxillary document? > > First, here's a gist dump of my test core index (4 docs + 4 aux docs) > https://gist.github.com/anonymous/2774b54e667778c71492 > > Next, here's a simple facet query only on the aux . While this works, it > only returns auxillary documents > https://gist.github.com/anonymous/a58b87576b895e467c68 > > Finally, I tweak the query using a SOLR join ( > https://wiki.apache.org/solr/Join ) to return the main documents (which it > does), but the faceting returns no results. This is what I'm hoping someone > on this list can answer . > Here is the gist of that query > https://gist.github.com/anonymous/f3a287ab726f35b142cf > > Any answers, suggestions ? > > Thanks > -- --- Thanks & Regards Umesh Prasad