elasticsearch | template query | java API

Question

I was trying to implement the feature of template query. Refer to the last section of http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-template.html

I added a query template using sense. Now the need is through JAVA API of elasticsearch, I need to execute this query template and store the result in SearchResponse. However I am not able to find any API related to query Template. The only class file which is available is TemplateQueryBuilder. This class constructs the template query perfectly but I am not sure of which method to be called from Client in order to pass the object of TemplateQueryBuilder. Help in this is appreciated.

Bahaaldine Azarmi · Accepted Answer · 2015-01-28 18:38:39Z

3

Here is how to do it :

SearchRequestBuilder request = client;.prepareSearch();
request.setTemplateName(templateName);
request.setTemplateType(ScriptService.ScriptType.INDEXED);
request.setTemplateParams(templateParams);
SearchResponse response = request.get();

You just need to parse the response object then ..

refer to: http://www.elasticsearch.org/guide/en/elasticsearch/client/java-api/current/search.html#java-search-template

answered Jan 28, 2015 at 18:38

Bahaaldine Azarmi

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Vongo · Accepted Answer · 2017-07-12 07:59:15Z

1

Note that with API version 2.X, as request.setTemplateX methods are deprecated, you should use a different approach. Either you can use request.setTemplate(Template template) which is similar to the accepted answer, or you can go with the more generic QueryBuilders approach:

QueryBuilder qb = QueryBuilders.templateQuery(
    "templateName",
    ScriptService.ScriptType.FILE,
    templateParams);

More to read: https://www.elastic.co/guide/en/elasticsearch/client/java-api/2.4/java-specialized-queries.html#java-query-dsl-template-query

answered Jul 12, 2017 at 7:59

Vongo

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