I want to enable users to select multiple facet values for a specific facet fields. For example, if "color" is a facet field, I'd like to let users to select "red" OR "blue".
Please note, I've set <solrQueryParser defaultOperator="AND" /> because I want "q=hello+world" means "hello" and "world" are AND'ed together. 1) What is the syntax of doing that? Can I implement that by putting "OR" within the fq clause? E.g. &facet=on&facet.field=color&facet.field=size &fq=color:(red OR blue) &fq=size:(M OR L) 2) Is there a performance penalty associated with using "OR" on the facet values like that? If so how much of a penalty? Thanks