elasticsearch和lucene4查询语法比较

轩辕阁

　　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:

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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:

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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：

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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:

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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);

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