[英]Elasticsearch: rewrite a query using java native api
我在Elasticsearch中有此查询,如果我从命令行运行它,则该查询运行正常:
POST http://localhost:9200/YOUR_INDEX_NAME/_search/
{
"size": 0,
"aggs": {
"autocomplete": {
"terms": {
"field": "autocomplete",
"order": {
"_count": "desc"
},
"include": {
"pattern": "c.*"
}
}
}
},
"query": {
"prefix": {
"autocomplete": {
"value": "c"
}
}
}
}
我试图使用本地客户端在Java中重写它:
SearchResponse searchResponse2 = newClient.prepareSearch(INDEX_NAME)
.setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
.setQuery("{\n" +
" \"size\": 0,\n" +
" \"aggs\": {\n" +
" \"autocomplete\": {\n" +
" \"terms\": {\n" +
" \"field\": \"autocomplete\",\n" +
" \"order\": {\n" +
" \"_count\": \"desc\"\n" +
" },\n" +
" \"include\": {\n" +
" \"pattern\": \"c.*\"\n" +
" }\n" +
" }\n" +
" }\n" +
" },\n" +
" \"query\": {\n" +
" \"prefix\": {\n" +
" \"autocomplete\": {\n" +
" \"value\": \"c\"\n" +
" }\n" +
" }\n" +
" }\n" +
"}").get();
for (SearchHit res : searchResponse2.getHits()){
System.out.println(res.getSourceAsString());
}
似乎我在此翻译过程中遗漏了一些东西。 提前致谢
Java客户端setQuery()
方法并不需要一个String与JSON查询,则需要建立查询使用QueryBuilders
辅助方法,并建立聚集你的AggregationBuilders
辅助方法。
在您的情况下,将如下所示:
// build the aggregation
TermsBuilder agg = AggregationBuilders.terms("autocomplete")
.field("autocomplete")
.include("c.*")
.order(Terms.Order.count(false));
// build the query
SearchResponse searchResponse2 = newClient.prepareSearch(INDEX_NAME)
.setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
.setSize(0)
.setQuery(QueryBuilders.prefixQuery("autocomplete", "c"))
.addAggregation(agg)
.get();
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