/**
* @param filter The filter for the bucket that resulted in this context/domain. Can be null if
* this is the root context.
* @param domain The resulting set of documents for this facet.
*/
public FacetContext sub(Query filter, DocSet domain) {
FacetContext ctx = new FacetContext();
ctx.parent = this;
ctx.base = domain;
ctx.filter = filter;
// carry over from parent
ctx.flags = flags;
ctx.qcontext = qcontext;
ctx.req = req;
ctx.searcher = searcher;
return ctx;
}
