I think you need to search A for single doc with early termination. And then search for either A or B. The closest conditional logic query is WAND, but it doesn't do what's asked here. btw, IndexSearcher combines Indices, and Queries.
On Mon, Jan 6, 2020 at 7:33 AM 小鱼儿 <ctengc...@gmail.com> wrote: > Hi everybody, > > I want to implement an auto-keyword-correction mode custom query: suppose a > scenario where user inputs a keyword query A, but due to typo or other > reasons, A should be B, A is not a valid term in lucene's index which B is. > (I'm not considering NLP in high-dimensional semantice space which is out > of scope here) > > I could use 2 queries to do this, but it's too costly. What i need is a > "early-termination" mode: > (1) keyword A will hit a non-empty DocIDSet so will not query B; Or > (2) keyword A's DocIDSet will be empty and B's will then match > > That is "A OR B" likewise in C/C++ language. But here i notice Lucene's > BooleanQuery's SHOULD relationship is not the solving way. Perhaps i need > to implement another custom query class? > > btw, How can Lucene's Query API become high-order composable? Lucene's > "LeafContext" concept is really very confusing me... > -- Sincerely yours Mikhail Khludnev
