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? >
