apache lucene7.0几种常用的查询条件构造方式

官方文档:https://lucene.apache.org/core/7_1_0/core/org/apache/lucene/search/package-summary.html#search

1.通过QueryParser构造查询单条件条件

QueryParser queryParser = new QueryParser("courseName", analyzer);Query query = queryParser.parse("语文的3年级");

2.通过构造单条件TermQuery

Query query = new TermQuery(new Term("courseName", "小学"));

3.通过构造多条件查询MultiFieldQueryParser

String[] queries= {"古诗","古诗二首"};String[] fields = { "courseName", "title" }; Query query = MultiFieldQueryParser.parse(queries, fields, analyzer);

4.BooleanQuery 构建多条件查询

Query query1 = new TermQuery(new Term("title", "语文"));Query query2 = new TermQuery(new Term("courseName", "3年级"));BooleanClause bc1 = new BooleanClause(query1, BooleanClause.Occur.MUST);BooleanClause bc2 = new BooleanClause(query2, BooleanClause.Occur.MUST_NOT);Query query = new BooleanQuery.Builder().add(bc1).add(bc2).build();

5.PhraseQuery 个人感觉主要对英语(类似英语单词之间有空格分开的语言)  有作用,对于中文可能作用不大

 PhraseQuery.Builder builder = new PhraseQuery.Builder();//表示组成一个 "hello XXXX word" 的短语区匹配 builder.add(new Term("courseName", "hello"),0); builder.add(new Term("courseName", "word"),2); //假如有一个document "hellow,I zhengzhen  word." //表示hellow向右(也可能向右)移动1次以后 "hellow zhengzhen word" 刚好匹配"hello XXXX word" builder.setSlop(1); Query query = builder.build();

6.MultiPhraseQuery  是PhraseQuery 的子类,作用相似

 MultiPhraseQuery.Builder b=new MultiPhraseQuery.Builder(); b.add(new Term("title","Unit")).add(new Term("title","1")); b.setSlop(2); Query query =b.build();

7.通配符查询WildcardQuery

//使用通配符查询，*代表0个或多个字母，?代表0个或1个字母。Query query=new WildcardQuery(new Term("title","Unit*"));

8.PointRangeQuery数字范围查询


1．MUST和MUST：取得连个查询子句的交集。 
2．MUST和MUST_NOT：表示查询结果中不能包含MUST_NOT所对应得查询子句的检索结果。 
3．SHOULD与MUST_NOT：连用时，功能同MUST和MUST_NOT。
4．SHOULD与MUST连用时，结果为MUST子句的检索结果,但是SHOULD可影响排序。
5．SHOULD与SHOULD：表示“或”关系，最终检索结果为所有检索子句的并集。
6．MUST_NOT和MUST_NOT：无意义，检索无结果。