When using UnifiedSearch in Episerver Find, I prefer to use the method
IClient.UnifiedSearchFor() because it takes care of necessary logic without exposing implementation details, rendering in lower risk of introducing bugs and unwanted behaviour.
By default, multiword queries is concatenated using the operator
OR, but in this case we needed to use
AND combining the words. The solution using the extension method
.WithAndAsDefaultOperator() found on Episerver World1 only applies to methods returning the type of
IQueriedSearch<ISearchContent, QueryStringQuery>. The return type of UnifiedSearchFor is
IQueriedSearch<ISearchContent> which obstructing the possibility to extend with
So why not fix this, writing our own extension method returning the correct type? Let’s go!
Episerver Find ships with two methods named
UnifiedSearchFor, one in
EPiServer.Find namespace, that invokes boosting with unified weights, and one in the
EPiServer.Find.Cms namespace which resolves language for stemming.2
Our method is to replace
Episerver.Find.UnifiedSearchFor which means we’ll need to provide the language for stemming ourselves.
Our main goal is to be able to select which operator our query should use, we will start with setting these. I prefer to do this with an
enum, but you can always use this using a
struct or similar static value.
Applying some wild guessing, the implementation of UnifiedSearchFor looks like this:
- Init a search for
- Apply the search query with
- Apply weights with
Rendering in the following set up:
To resolve our stemming we are going to need to provide the language ourselves when calling the extension. By using
client.UnifiedSearch(language) we are calling built in functionality giving us a semi-isolated implementation in only calling methods in the public API, rendering in us unaware and independent of concrete implementation changes regarding UnifiedSearch in the future.
Full code available as gist: https://gist.github.com/kimgunnarsson/31ab1968d105e58183d6
- How to set “AND”-relations between words in the For statement ↩
- Episerver Find Documentation: Boosting with weights ↩