Percolator query without the mapped stemming analyzer

We use the PercolateRequestBuilder (Java API) to create alerts on the moment a certain word is found in a piece of text.

For the normal searchcommand we use the dutch stemmer analyzer. Useful to get the words that look like the searchterm. Although for the alert we only want an alert for the literal word. I tried to exclude the stemmer filter for only the percolator query. I found some possibilities for the REST API, but I can't find how to specify this within the Java API.

Anyone experience with this problem (and found a resolution)?