Thanks! The use case that I am having is I am trying to calculate the docFreq for the suggestion word which produced by my "did you mean"/"spellcheck" feature.
I was trying to avoid to having a second search request. But it seems in this case, I have to formula another search query to do the job. Sincerely, --Xiaolong On Wed, Jul 20, 2016 at 9:31 AM, Adrien Grand <jpou...@gmail.com> wrote: > There is no way to get this statistic in constant-time. If you need it for > scoring, you need to make approximations. For instance, BlendedTermQuery > uses the max of the doc freqs as the aggregated doc freq. > > Otherwise, you can also compute this number by running a BooleanQuery with > one SHOULD clause per field. > > Le mar. 19 juil. 2016 à 19:08, Xiaolong Zheng <zhengxiaol...@gmail.com> a > écrit : > > > Hi, > > > > I want to know is there any way that query the doc frequency across > > multiple search field? > > > > The existing API seems only provide the query for a single search field: > > > > > > indexReader.docFreq(new Term(field, word)) > > > > > > Any suggestions that I could get the doc frequency from multiple field? > > > > Thanks in Advance, > > > > --Xiaolong > > >
