BWT,for some condition-required search I can make the condition as a filter and then filter the result.
Also I can build a BooleanQuery according to the condition just like the code in the range search,I wonder which is better? 2010/11/18 yang Yang <m4ecli...@gmail.com> > Thank you very much!!! :) > > I will have a look at the docs . > > 2010/11/18 Anshum <ansh...@gmail.com> > > Hi. >> The way you're forming the BooleanQuery seems fine to me (minus the ture >> should've been true, and 'm guessing its a typo). >> About the geo-spatial search, you may have a look at the various >> approaches >> there are for the same. Have a look at the contrib module in lucene. >> http://wiki.apache.org/lucene-java/SpatialSearch >> For your understanding, you could have a look at the bounding box >> approach. >> >> -- >> Anshum Gupta >> http://ai-cafe.blogspot.com >> >> >> On Thu, Nov 18, 2010 at 7:38 AM, yang Yang <m4ecli...@gmail.com> wrote: >> >> > We are using the hibernate search which is based on lucene as the search >> > engine to build a full text search for our position-related data in the >> > MYSQL db. >> > This is the main structure of the table(it save the id,coordinate and >> name >> > of one Surface_Feature): >> > +----+--------+---------+------------+ >> > | id | co_x | co_y | name | >> > +----+--------+---------+------------+ >> > | 1 | 11111 | 22222 | Disney Park| >> > +----+--------+---------+------------+ >> > Then these attributes are mapped as the fields in lucene by hibernate >> > search.And I do the following configuration to the field: >> > ..... >> > field_co_x -->Store.Yes,Index.UN_TOKENIZED. >> > field_co_y -->Store.Yes,Index.UN_TOKENIZED. >> > field_name -->Store.Yes,Index.TOKENIZED. >> > ... >> > >> > >> > Then we want to query the Surface_Features basing on a special scope. >> > >> > For example: >> > 1) Range search >> > if we want to search the Surface_Feature whose co_x is between >> [minX,maxX] >> > and whose iny is between [minY,maxY],for this requirement I thought the >> > RangeTermQuery. >> > --code snippet-- >> > >> > TermRangeQuery trq_x=new TermRangeQuery("co_x ", minX, maxX, >> ture, >> > true); >> > TermRangeQuery trq_Y=new TermRangeQuery("co_y", minY, maxY, ture, >> > true); >> > >> > BooleanQuery query=new BooleanQuery(); >> > query.add(trq_x, BooleanClause.Occur.MUST); >> > query.add(trq_Y,BooleanClause.Occur.MUST); >> > Is this right? >> > >> > 2) Anchor-distance based search >> > But I have no idea about how to query features basing on a anchor and a >> > distance. >> > >> > That'to say I want to search features who are located inside the circle >> > defined by the anchor and the distance. >> > >> > It seems that the sphinx provide a function named SetGeoAnchor(),so I >> > wonder >> > if lucene can implement the same requirement? >> > >> > BWT,for some condition-required search I can make the condition as a >> filter >> > and then filter the result. >> > >> > Also I can build a BooleanQuery according to the condition just like the >> > code in the range search,I wonder which is better? >> > >> > >
