> Is it possible to use dismax query parser using solrJ, > since this is how I'm going to access solr?
Sure it is possible. SolrQuery.setQueryType("dismax") is equals to &defType=dismax. More permanent way: You can define your dismax parameters (fields and boost weights) in solrconfig.xml, and make default="true" for that SearchHandler. Example solrconfig.xml contains examples of dismax setups with different parameters/settings.