Elasticsearch的javaAPI之query dsl-queries
和rest query dsl一样，elasticsearch提供了一个完整的Java query dsl。 查询建造者（factory）是
QueryBuilders 。 一旦准备好您的查询,您可以使用query api。
如何使用QueryBuilders？仅仅就是加入下面的包：
import org.elasticsearch.index.query.QueryBuilders.*;
请注意,您可以轻松地打印(又名调试)
查询生成的JSON，用 toString()方法
QueryBuilder 可以用于接受查询,的任何API（如count和search）。
下面例举几种常用查询API：
QueryBuilder qb = QueryBuilders.matchQuery("name", "kimchy elasticsearch");
QueryBuilder qb = QueryBuilders.multiMatchQuery( "kimchy elasticsearch", // Text you are looking for "user", "message" // Fields you query on );
QueryBuilder qb = QueryBuilders .boolQuery() .must(termQuery("content", "test1")) .must(termQuery("content", "test4")) .mustNot(termQuery("content", "test2")) .should(termQuery("content", "test3"));
QueryBuilders.boostingQuery() .positive(QueryBuilders.termQuery("name","kimchy")) .negative(QueryBuilders.termQuery("name","dadoonet")) .negativeBoost(0.2f);
QueryBuilder qb = QueryBuilders .rangeQuery("price") .from(5) .to(10) .includeLower(true) .includeUpper(false);
QueryBuilder qb = QueryBuilders.queryString("+kimchy -elasticsearch");
QueryBuilder qb = QueryBuilders.termQuery("name", "kimchy");
More Like This (Field) Query (mlt and mlt_field)
// mlt Query QueryBuilders.moreLikeThisQuery("name.first", "name.last") // Fields .likeText("text like this one") // Text .minTermFreq(1) // Ignore Threshold .maxQueryTerms(12); // Max num of Terms // in generated queries // mlt_field Query QueryBuilders.moreLikeThisFieldQuery("name.first") // Only on single field .likeText("text like this one") .minTermFreq(1) .maxQueryTerms(12);
Elasticsearch的javaAPI之query dsl-queries
原文地址：http://blog.csdn.net/woshiyexinjie/article/details/41320239
