queryFactory.addBuilder("FilteredQuery",new FilteredQueryBuilder(filterFactory,queryFactory));
queryFactory.addBuilder("ConstantScoreQuery",new ConstantScoreQueryBuilder(filterFactory));
SpanQueryBuilderFactory sqof=new SpanQueryBuilderFactory();
SpanNearBuilder snb=new SpanNearBuilder(sqof);
sqof.addBuilder("SpanNear",snb);
queryFactory.addBuilder("SpanNear",snb);
SpanTermBuilder snt=new SpanTermBuilder();
sqof.addBuilder("SpanTerm",snt);