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Add example and test for @Query with Collection (#2066)

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Original Pull Request: #2066
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James Mudd 2022-01-20 18:35:40 +00:00 committed by GitHub
parent 056a4a76e7
commit 1331e26279
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2 changed files with 46 additions and 1 deletions
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24
src/main/asciidoc/reference/elasticsearch-repository-queries.adoc
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@ -312,8 +312,9 @@ Repository methods can be defined to have the following return types for returni
[[elasticsearch.query-methods.at-query]]
== Using @Query Annotation
.Declare query at the method using the `@Query` annotation.
.Declare query on the method using the `@Query` annotation.
====
The arguments passed to the method can be inserted into placeholders in the query string. the placeholders are of the form `?0`, `?1`, `?2` etc. for the first, second, third parameter and so on.
[source,java]
----
interface BookRepository extends ElasticsearchRepository<Book, String> {
@ -338,3 +339,24 @@ It will be sent to Easticsearch as value of the query element; if for example th
}
----
====
.`@Query` annotation on a method taking a Collection argument
====
A repository method such as
[source,java]
----
@Query("{\"ids\": {\"values\": ?0 }}")
List<SampleEntity> getByIds(Collection<String> ids);
----
would make an https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-ids-query.html[IDs query] to return all the matching documents. So calling the method with a `List` of `["id1", "id2", "id3"]` would produce the query body
[source,json]
----
{
"query": {
"ids": {
"values": ["id1", "id2", "id3"]
}
}
}
----
====

23
src/test/java/org/springframework/data/elasticsearch/repositories/custommethod/CustomMethodRepositoryIntegrationTests.java
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@ -22,6 +22,7 @@ import static org.springframework.data.elasticsearch.utils.IdGenerator.*;
import java.lang.Long;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.UUID;
@ -71,6 +72,7 @@ import org.springframework.lang.Nullable;
* @author Don Wellington
* @author Peter-Josef Meisch
* @author Rasmus Faber-Espensen
* @author James Mudd
*/
@SpringIntegrationTest
public abstract class CustomMethodRepositoryIntegrationTests {
@ -1648,6 +1650,24 @@ public abstract class CustomMethodRepositoryIntegrationTests {
assertThat(count).isEqualTo(20);
}
@Test
void shouldBeAbleToUseCollectionInQueryAnnotatedMethod() {
List<SampleEntity> entities = createSampleEntities("abc", 20);
repository.saveAll(entities);
List<String> ids = entities.stream()
.map(SampleEntity::getId)
.limit(7) // Just get subset
.collect(Collectors.toList());
List<SampleEntity> sampleEntities = repository.getByIds(ids);
assertThat(sampleEntities).hasSize(7);
List<String> returnedIds = sampleEntities.stream().map(SampleEntity::getId).collect(Collectors.toList());
assertThat(returnedIds).containsAll(ids);
}
private List<SampleEntity> createSampleEntities(String type, int numberOfEntities) {
List<SampleEntity> entities = new ArrayList<>();
@ -1881,6 +1901,9 @@ public abstract class CustomMethodRepositoryIntegrationTests {
@CountQuery("{\"bool\" : {\"must\" : {\"term\" : {\"type\" : \"?0\"}}}}")
long countWithQueryByType(String type);
@Query("{\"ids\" : {\"values\" : ?0 }}")
List<SampleEntity> getByIds(Collection<String> ids);
}
/**