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querydsl elasticsearch with Java Rest Client

Anjali Sharma answered on January 12, 2023 Popularity 4/10 Helpfulness 1/10

answer querydsl elasticsearch with Java Rest Client

querydsl elasticsearch with Java Rest Client

Comment

The price to pay by tackling the problem openly is a lot of cumbersome and error-prone code to write. In this regard, the

consistency and conciseness of Java client API really makes a huge difference

final Map<String, Object> authors = new LinkedHashMap<>();
authors.put("type", "authors");
authors.put("query",
singletonMap("term",
singletonMap("last_name", "Gormley")
)
);
final Map<String, Object> categories = new LinkedHashMap<>();
categories.put("path", "categories");
categories.put("query",
singletonMap("match",
singletonMap("categories.name", "search")
)
);
final Map<String, Object> query = new LinkedHashMap<>();
query.put("size", 10);
query.put("_source", new String[] { "title", "publisher" });
query.put("query",
singletonMap("bool",
singletonMap("must", new Map[] {
singletonMap("range",
singletonMap("rating",
singletonMap("gte", 4)
)
),
singletonMap("has_child", authors),
singletonMap("nested", categories)
})
)
);
final HttpEntity payload = new NStringEntity(JSONObject.toJSONString(query),
ContentType.APPLICATION_JSON);
final Response response = client
.performRequest(HttpPost.METHOD_NAME, "catalog/books/_search",
emptyMap(), payload);
final Object json = defaultConfiguration()
.jsonProvider()
.parse(EntityUtils.toString(response.getEntity()));
assertThat(json, hasJsonPath("$.hits.hits[0]._source.title",
containsString("Elasticsearch: The Definitive Guide.")));

https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-query-dsl.html

Popularity 4/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: elasticsearch java querydsl rest-client

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Contributed on Jan 12 2023

Anjali Sharma

0 Answers Avg Quality 2/10

querydsl elasticsearch with Java Rest Client

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