Polishing.

Reformat code.

See #3853
Original pull request: #3856.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/DocumentPointerFactory.java

@@ -178,7 +178,8 @@ class DocumentPointerFactory {
 			}
 
 			this.documentPointer = org.bson.Document.parse(targetLookup);
-			this.isSimpleTargetPointer = placeholderMap.size() == 1 && placeholderMap.containsValue("target") && lookup.contains("#target");
+			this.isSimpleTargetPointer = placeholderMap.size() == 1 && placeholderMap.containsValue("target")
+					&& lookup.contains("#target");
 		}
 
 		private String placeholder(int index) {
@@ -248,7 +249,7 @@ class DocumentPointerFactory {
 				target.put(entry.getKey(), entry.getValue());
 			}
 
-			if(target.size()==1 && isSimpleTargetPointer) {
+			if (target.size() == 1 && isSimpleTargetPointer) {
 				return target.values().iterator().next();
 			}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/convert/QueryMapper.java

@@ -517,7 +517,7 @@ public class QueryMapper {
 			return true;
 		}
 
-		if(property.isDocumentReference()) {
+		if (property.isDocumentReference()) {
 			return true;
 		}
 
@@ -1415,8 +1415,8 @@ public class QueryMapper {
 					String partial = iterator.next();
 					currentIndex++;
 
-					boolean isPositional = isPositionalParameter(partial) && property.isCollectionLike() ;
-					if(property.isMap() && currentPropertyRoot.equals(partial) && iterator.hasNext()){
+					boolean isPositional = isPositionalParameter(partial) && property.isCollectionLike();
+					if (property.isMap() && currentPropertyRoot.equals(partial) && iterator.hasNext()) {
 						partial = iterator.next();
 						currentIndex++;
 					}
@@ -1428,7 +1428,7 @@ public class QueryMapper {
 					inspect = isPositional && iterator.hasNext();
 				}
 
-				if(currentIndex + 1 < pathParts.size()) {
+				if (currentIndex + 1 < pathParts.size()) {
 					currentIndex++;
 					currentPropertyRoot = pathParts.get(currentIndex);
 				}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/QueryMapperUnitTests.java

@@ -62,7 +62,6 @@ import org.springframework.data.mongodb.core.query.BasicQuery;
 import org.springframework.data.mongodb.core.query.Criteria;
 import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.mongodb.core.query.TextQuery;
-import org.springframework.data.mongodb.core.query.Update;
 
 import com.mongodb.BasicDBObject;
 import com.mongodb.MongoClientSettings;
@@ -1557,10 +1556,10 @@ public class QueryMapperUnitTests {
 
 		private String name;
 
-		@DocumentReference(lookup = "{ 'name' : ?#{#target} }") // remove `lookup` for the other test case.
+		@DocumentReference(lookup = "{ 'name' : ?#{#target} }")
 		private Customer customer;
 
-		@DocumentReference(lookup = "{ 'name' : ?#{#target} }") // remove `lookup` for the other test case.
+		@DocumentReference(lookup = "{ 'name' : ?#{#target} }")
 		private List<Customer> customers;
 
 		@DocumentReference

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/UpdateMapperUnitTests.java

@@ -35,9 +35,9 @@ import org.bson.types.ObjectId;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
-import org.mockito.Mock;
 import org.mockito.Mockito;
 import org.mockito.junit.jupiter.MockitoExtension;
+
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.annotation.Transient;
@@ -47,9 +47,7 @@ import org.springframework.data.domain.Sort;
 import org.springframework.data.domain.Sort.Direction;
 import org.springframework.data.domain.Sort.Order;
 import org.springframework.data.mapping.MappingException;
-import org.springframework.data.mongodb.MongoDatabaseFactory;
 import org.springframework.data.mongodb.core.DocumentTestUtils;
-import org.springframework.data.mongodb.core.MongoExceptionTranslator;
 import org.springframework.data.mongodb.core.mapping.DocumentReference;
 import org.springframework.data.mongodb.core.mapping.Field;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
@@ -1699,10 +1697,10 @@ class UpdateMapperUnitTests {
 
 		private String name;
 
-		@DocumentReference(lookup = "{ 'name' : ?#{#target} }") // remove `lookup` for the other test case.
+		@DocumentReference(lookup = "{ 'name' : ?#{#target} }")
 		private Customer customer;
 
-		@DocumentReference(lookup = "{ 'name' : ?#{#target} }") // remove `lookup` for the other test case.
+		@DocumentReference(lookup = "{ 'name' : ?#{#target} }")
 		private List<Customer> customers;
 
 		@DocumentReference