DATAMONGO-2652 - Implements CrudRepository and ReactiveCrudRepository.delete(Iterable<ID> ids).

See also: DATACMNS-800.
Original pull request: #892.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/support/SimpleMongoRepository.java

@@ -51,6 +51,7 @@ import com.mongodb.client.result.DeleteResult;
  * @author Thomas Darimont
  * @author Mark Paluch
  * @author Mehran Behnam
+ * @author Jens Schauder
  */
 public class SimpleMongoRepository<T, ID> implements MongoRepository<T, ID> {
 
@@ -182,11 +183,19 @@ public class SimpleMongoRepository<T, ID> implements MongoRepository<T, ID> {
 	@Override
 	public void deleteAll(Iterable<? extends T> entities) {
 
-		Assert.notNull(entities, "The given Iterable of entities not be null!");
+		Assert.notNull(entities, "The given Iterable of entities must not be null!");
 
 		entities.forEach(this::delete);
 	}
 
+	@Override
+	public void deleteAllById(Iterable<? extends ID> ids) {
+
+		Assert.notNull(ids, "The given Iterable of ids must not be null!");
+
+		ids.forEach(this::deleteById);
+	}
+
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.repository.CrudRepository#deleteAll()

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/support/SimpleReactiveMongoRepository.java

@@ -17,10 +17,8 @@ package org.springframework.data.mongodb.repository.support;
 
 import static org.springframework.data.mongodb.core.query.Criteria.*;
 
-import reactor.core.publisher.Flux;
-import reactor.core.publisher.Mono;
-
 import java.io.Serializable;
+import java.util.Collection;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -40,6 +38,9 @@ import org.springframework.util.Assert;
 
 import com.mongodb.client.result.DeleteResult;
 
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
 /**
  * Reactive repository base implementation for Mongo.
  *
@@ -47,6 +48,7 @@ import com.mongodb.client.result.DeleteResult;
  * @author Oliver Gierke
  * @author Christoph Strobl
  * @author Ruben J Garcia
+ * @author Jens Schauder
  * @since 2.0
  */
 public class SimpleReactiveMongoRepository<T, ID extends Serializable> implements ReactiveMongoRepository<T, ID> {
@@ -401,7 +403,28 @@ public class SimpleReactiveMongoRepository<T, ID extends Serializable> implement
 
 		Assert.notNull(entities, "The given Iterable of entities must not be null!");
 
-		return Flux.fromIterable(entities).flatMap(this::delete).then();
+		Collection<?> idCollection = StreamUtils.createStreamFromIterator(entities.iterator())
+				.map(entityInformation::getId)
+				.collect(Collectors.toList());
+
+		Criteria idsInCriteria = where(entityInformation.getIdAttribute()).in(idCollection);
+
+		return mongoOperations
+				.remove(new Query(idsInCriteria), entityInformation.getJavaType(), entityInformation.getCollectionName())
+				.then();
+	}
+
+	@Override
+	public Mono<Void> deleteAllById(Iterable<? extends ID> ids) {
+
+		Assert.notNull(ids, "The given Iterable of ids must not be null!");
+
+		Collection<?> idCollection = StreamUtils.createStreamFromIterator(ids.iterator()).collect(Collectors.toList());
+		Criteria idsInCriteria = where(entityInformation.getIdAttribute()).in(idCollection);
+
+		return mongoOperations
+				.remove(new Query(idsInCriteria), entityInformation.getJavaType(), entityInformation.getCollectionName())
+				.then();
 	}
 
 	/*

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/ReactiveMongoRepositoryTests.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.mongodb.repository;
 
+import static java.util.Arrays.*;
 import static org.assertj.core.api.Assertions.*;
 import static org.springframework.data.domain.Sort.Direction.*;
 import static org.springframework.data.mongodb.core.query.Criteria.*;
@@ -66,7 +67,6 @@ import org.springframework.data.mongodb.test.util.MongoClientExtension;
 import org.springframework.data.mongodb.test.util.MongoTestUtils;
 import org.springframework.data.querydsl.ReactiveQuerydslPredicateExecutor;
 import org.springframework.data.repository.Repository;
-import org.springframework.data.repository.query.QueryMethodEvaluationContextProvider;
 import org.springframework.data.repository.query.ReactiveQueryMethodEvaluationContextProvider;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 
@@ -77,10 +77,12 @@ import com.mongodb.reactivestreams.client.MongoClient;
  *
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Jens Schauder
  */
 @ExtendWith({ MongoClientExtension.class, SpringExtension.class })
 public class ReactiveMongoRepositoryTests {
 
+	public static final int PERSON_COUNT = 7;
 	static @Client MongoClient mongoClient;
 
 	@Autowired ReactiveMongoTemplate template;
@@ -154,17 +156,17 @@ public class ReactiveMongoRepositoryTests {
 		dave = new Person("Dave", "Matthews", 42);
 		oliver = new Person("Oliver August", "Matthews", 4);
 		carter = new Person("Carter", "Beauford", 49);
-		carter.setSkills(Arrays.asList("Drums", "percussion", "vocals"));
+		carter.setSkills(asList("Drums", "percussion", "vocals"));
 		Thread.sleep(10);
 		boyd = new Person("Boyd", "Tinsley", 45);
-		boyd.setSkills(Arrays.asList("Violin", "Electric Violin", "Viola", "Mandolin", "Vocals", "Guitar"));
+		boyd.setSkills(asList("Violin", "Electric Violin", "Viola", "Mandolin", "Vocals", "Guitar"));
 		stefan = new Person("Stefan", "Lessard", 34);
 		leroi = new Person("Leroi", "Moore", 41);
 
 		alicia = new Person("Alicia", "Keys", 30, Sex.FEMALE);
 
-		repository.saveAll(Arrays.asList(oliver, carter, boyd, stefan, leroi, alicia, dave)).as(StepVerifier::create) //
-				.expectNextCount(7) //
+		repository.saveAll(asList(oliver, carter, boyd, stefan, leroi, alicia, dave)).as(StepVerifier::create) //
+				.expectNextCount(PERSON_COUNT) //
 				.verifyComplete();
 	}
 
@@ -411,7 +413,7 @@ public class ReactiveMongoRepositoryTests {
 
 		leroi.id = null;
 		boyd.id = null;
-		contactRepository.saveAll(Arrays.asList(leroi, boyd)) //
+		contactRepository.saveAll(asList(leroi, boyd)) //
 				.as(StepVerifier::create) //
 				.expectNextCount(2) //
 				.verifyComplete();
@@ -430,7 +432,7 @@ public class ReactiveMongoRepositoryTests {
 	@Test // DATAMONGO-2182
 	public void shouldFindPersonsWhenUsingQueryDslPerdicatedOnIdProperty() {
 
-		repository.findAll(person.id.in(Arrays.asList(dave.id, carter.id))) //
+		repository.findAll(person.id.in(asList(dave.id, carter.id))) //
 				.collectList() //
 				.as(StepVerifier::create) //
 				.assertNext(actual -> {
@@ -468,7 +470,7 @@ public class ReactiveMongoRepositoryTests {
 							.contains(new PersonAggregate("Tinsley", "Boyd")) //
 							.contains(new PersonAggregate("Beauford", "Carter")) //
 							.contains(new PersonAggregate("Moore", "Leroi")) //
-							.contains(new PersonAggregate("Matthews", Arrays.asList("Dave", "Oliver August")));
+							.contains(new PersonAggregate("Matthews", asList("Dave", "Oliver August")));
 				}).verifyComplete();
 	}
 
@@ -484,7 +486,7 @@ public class ReactiveMongoRepositoryTests {
 									new PersonAggregate("Beauford", "Carter"), //
 									new PersonAggregate("Keys", "Alicia"), //
 									new PersonAggregate("Lessard", "Stefan"), //
-									new PersonAggregate("Matthews", Arrays.asList("Dave", "Oliver August")), //
+									new PersonAggregate("Matthews", asList("Dave", "Oliver August")), //
 									new PersonAggregate("Moore", "Leroi"), //
 									new PersonAggregate("Tinsley", "Boyd"));
 				}) //
@@ -501,7 +503,7 @@ public class ReactiveMongoRepositoryTests {
 					assertThat(actual) //
 							.containsExactly( //
 									new PersonAggregate("Lessard", "Stefan"), //
-									new PersonAggregate("Matthews", Arrays.asList("Dave", "Oliver August")));
+									new PersonAggregate("Matthews", asList("Dave", "Oliver August")));
 				}) //
 				.verifyComplete();
 	}
@@ -576,7 +578,7 @@ public class ReactiveMongoRepositoryTests {
 		Person p3 = new Person(firstname, null);
 		p3.setEmail("p3@example.com");
 
-		repository.saveAll(Arrays.asList(p1, p2, p3)).then().as(StepVerifier::create).verifyComplete();
+		repository.saveAll(asList(p1, p2, p3)).then().as(StepVerifier::create).verifyComplete();
 
 		repository.projectToLastnameAndRemoveId(firstname) //
 				.as(StepVerifier::create) //
@@ -617,6 +619,18 @@ public class ReactiveMongoRepositoryTests {
 				.verifyComplete();
 	}
 
+	@Test // DATAMONGO-2652
+	public void deleteAllById() {
+
+		repository.deleteAllById(asList(carter.id, dave.id)) //
+				.as(StepVerifier::create) //
+				.verifyComplete();
+
+		repository.count().as(StepVerifier::create) //
+				.expectNext(PERSON_COUNT - 2L) //
+				.verifyComplete();
+	}
+
 	interface ReactivePersonRepository
 			extends ReactiveMongoRepository<Person, String>, ReactiveQuerydslPredicateExecutor<Person> {
 

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/support/SimpleMongoRepositoryTests.java

@@ -15,11 +15,11 @@
  */
 package org.springframework.data.mongodb.repository.support;
 
+import static java.util.Arrays.*;
 import static org.assertj.core.api.Assertions.*;
 import static org.springframework.data.domain.ExampleMatcher.*;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -58,6 +58,7 @@ import org.springframework.transaction.support.TransactionTemplate;
  * @author Thomas Darimont
  * @author Christoph Strobl
  * @author Mark Paluch
+ * @author Jens Schauder
  */
 @ExtendWith({ MongoTemplateExtension.class, MongoServerCondition.class })
 public class SimpleMongoRepositoryTests {
@@ -85,11 +86,11 @@ public class SimpleMongoRepositoryTests {
 		leroi = new Person("Leroi", "Moore", 41);
 		alicia = new Person("Alicia", "Keys", 30, Sex.FEMALE);
 
-		all = repository.saveAll(Arrays.asList(oliver, dave, carter, boyd, stefan, leroi, alicia));
+		all = repository.saveAll(asList(oliver, dave, carter, boyd, stefan, leroi, alicia));
 	}
 
 	@Test
-	public void findALlFromCustomCollectionName() {
+	public void findAllFromCustomCollectionName() {
 		assertThat(repository.findAll()).hasSize(all.size());
 	}
 
@@ -384,7 +385,7 @@ public class SimpleMongoRepositoryTests {
 
 		repository.deleteAll();
 
-		repository.saveAll(Arrays.asList(first, second));
+		repository.saveAll(asList(first, second));
 
 		assertThat(repository.findAll()).containsExactlyInAnyOrder(first, second);
 	}
@@ -435,6 +436,17 @@ public class SimpleMongoRepositoryTests {
 		assertThat(exists).isTrue();
 	}
 
+	@Test // DATAMONGO-2652
+	public void deleteAllByIds() {
+
+		repository.deleteAllById(asList(dave.getId(), carter.getId()));
+
+		assertThat(repository.findAll()) //
+				.hasSize(all.size() - 2) //
+				.doesNotContain(dave) //
+				.doesNotContain(carter);
+	}
+
 	private void assertThatAllReferencePersonsWereStoredCorrectly(Map<String, Person> references, List<Person> saved) {
 
 		for (Person person : saved) {