Elasticsearch 2+ JAVA API 或过滤器

Question

我正在尝试编写一些 Java 代码来查询 ES5 实例。在 ES1 中，您可以 OR 和 AND 过滤器，或者过滤器和 andFilter。 ES5 中的等价物是什么？我试过了——

QueryBuilder fb1 = QueryBuilders.termQuery("term1", "value1");
QueryBuilder fb2 = QueryBuilders.termQuery("term1", "value2");
QueryBuilder fb3 = QueryBuilders.termQuery("term2", "value3");

QueryBuilder fb = QueryBuilders.boolQuery()
                        .must(fb1)
                        .should(fb2)

This gives results that match fb1, so this is not an OR

QueryBuilder fb = QueryBuilders.boolQuery()
                        .must(fb1)
                        .must(fb2)

This gives no results, so the AND worked.

我想弄清楚构建 AND、OR 查询的方法

Answer 1

为了进行 AND 查询，请将所有条件放入“必须”中。

QueryBuilder fb = QueryBuilders.boolQuery().must(fb1).must(fb2);

为了进行 OR 查询，请将所有条件放入“应该”中。

QueryBuilder fb = QueryBuilders.boolQuery().should(fb1).should(fb2);

Answer 2

您可以将 BoolQueryBuiler 用于这些过滤器：

BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery().must(QueryBuilders.termQuery("customerId", customerId))

boolQueryBuilder.mustNot(QueryBuilders.termsQuery("reason", "failed"));

                    boolQueryBuilder.should(QueryBuilders.termsQuery("action", "deny")).minimumNumberShouldMatch(1);

QueryBuilder queryBuilder=boolQueryBuilder;

new SearchContext().prepareSearch(sc.getIndexNames()).setTypes(sc.getTypeName()).setSearchType(SearchType.DFS_QUERY_THEN_FETCH).setQuery(queryBuilder);

Answer 3

来自 ElasticSearch 文档 (https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-compound-queries.html)：

QueryBuilder qb = boolQuery()
    .must(termQuery("content", "test1"))    
    .must(termQuery("content", "test4"))    
    .mustNot(termQuery("content", "test2")) 
    .should(termQuery("content", "test3"))  
    .filter(termQuery("content", "test5")); 

必须看起来它可能等同于 AND，并且应该看起来等同于 OR。