We already briefly introduced the idea behind the Solr components workflow, and we see that it's possible to use multiple query handlers at the same time by specifying a
defType parameter. The
defType parameter helps us to choose between some different query handlers, including our customized ones, if there are. We will focus on the next paragraphs of the standard and Dismax query handlers.
qt parameters that we have already seen are similar but different: the
qt parameter can be used to define and customize a search handler in the
solrconfig.xml file while
defType is a parameter that's used to inform a search handler what type of query parser to use.
For example, for using Edismax, it is possible ...