elasticsearch和lucene4查询语法比较
查询短语在单个字段上：elasticsearch：
1
2
QueryStringQueryBuilder queryBuilder = new QueryStringQueryBuilder("汉语词法或其它汉语语言知识进行分词");
queryBuilder.analyzer("ik").field("title");
lucene4:
1
2
3
QueryParser qp = new QueryParser(Version.LUCENE_42, "title",new IKAnalyzer(true));
qp.setDefaultOperator(QueryParser.AND_OPERATOR);
Query q = qp.parse("汉语词法或其它汉语语言知识进行分词");
查询短语在多个字段上查找：
elasticsearch：
1
2
QueryStringQueryBuilder queryBuilder = new QueryStringQueryBuilder("汉语词法或其它汉语语言知识进行分词");
queryBuilder.analyzer("ik").field("title").field("content");
lucene4:
1
2
3
4
5
6
7
Analyzer analyzer=new IKAnalyzer(true);
MultiFieldQueryParser.parse(Version.LUCENE_42, new String[]{"汉语词法或其它汉语语言知识进行分词"},new String[]{"title","content"},analyzer);
//默认在两个字段之间是或关系。如果需要改变两个字段之间的关系，请使用以下方法。
//查询字段必须在title字段，在content字段为或关系
BooleanClause.Occur[] flags = {BooleanClause.Occur.MUST,BooleanClause.Occur.SHOULD};
Analyzer analyzer=new IKAnalyzer(true);
MultiFieldQueryParser.parse(Version.LUCENE_42,"汉语词法或其它汉语语言知识进行分词",new String[]{"title","content"},flags,analyzer);
term query：
elasticsearch：
1
TermQueryBuilder t=new TermQueryBuilder("title", "中国");
lucene4:
1
2
Term term = new Term("title", "中国");
TermQuery query=new TermQuery(term);
组合查询：
需求：查询在科技频道，体育频道下，文章类型为3，标题和内容包含”全面发展的中国”的文章
elasticsearch：
1
2
3
4
5
6
7
8
9
List<Long> channelids = new ArrayList<Long>();
channelids.add("4");
channelids.add("5");
FilteredQueryBuilder queryBuilder= QueryBuilders.filteredQuery(
new QueryStringQueryBuilder("全面发展的中 国").analyzer("ik").field("title").filed("content"),
FilterBuilders.boolFilter()
.should(FilterBuilders.termsFilter("channelid", channelids))
.must(FilterBuilders.termFilter("model", 4))
);
lucene4:
1
2
3
4
5
6
7
8
9
10
11
12
13
Analyzer analyzer=new IKAnalyzer(true);
Query query =MultiFieldQueryParser.parse(Version.LUCENE_42, new String[]{"全面发展的中国"},new String[]{"title","content"},analyzer);
Term term1 = new Term("channelid", "4");
Term term2 = new Term("channelid", "5");
Term term3 = new Term("model", "4");
TermQuery q1 = new TermQuery(term1);
TermQuery q2 = new TermQuery(term2);
TermQuery q3 = new TermQuery(term3);
BooleanQuery booleanQuery = new BooleanQuery();
booleanQuery.add(q1, BooleanClause.Occur.SHOULD);
booleanQuery.add(q2, BooleanClause.Occur.SHOULD);
booleanQuery.add(q3, BooleanClause.Occur.MUST);
booleanQuery.add(query, BooleanClause.Occur.MUST);
本文固定链接: http://www.chepoo.com/elasticsearch-lucene4-compare-query-syntax.html | IT技术精华网
页:
[1]