Polishing.

Avoid duplicate query mapping for document replacement operations when the filter query can be determined from the already mapped _id field.

See #4707
Original pull request: #4719

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

@@ -1603,9 +1603,7 @@ public class MongoTemplate
 				MongoPersistentEntity<?> entity = mappingContext.getPersistentEntity(entityClass);
 				UpdateContext updateContext = queryOperations.replaceSingleContext(mapped, true);
 				Document replacement = updateContext.getMappedUpdate(entity);
-
+				Document filter = updateContext.getReplacementQuery();
-				Document filter = updateContext.getMappedQuery(entity);
-
 				if (updateContext.requiresShardKey(filter, entity)) {
 
 					if (entity.getShardKey().isImmutable()) {

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

@@ -809,13 +809,23 @@ class QueryOperations {
 
 		@Override
 		<T> Document getMappedQuery(@Nullable MongoPersistentEntity<T> domainType) {
+			return applyIsolation(super.getMappedQuery(domainType));
+		}
 
-			Document mappedQuery = super.getMappedQuery(domainType);
+		/**
+		 * A replacement query that is derived from the already {@link MappedDocument}.
+		 *
+		 * @return
+		 */
+		Document getReplacementQuery() {
+			return applyIsolation(getQueryObject());
+		}
 
+		private Document applyIsolation(Document mappedQuery) {
 			if (multi && update != null && update.isIsolated() && !mappedQuery.containsKey("$isolated")) {
+				mappedQuery = new Document(mappedQuery);
 				mappedQuery.put("$isolated", 1);
 			}
-
 			return mappedQuery;
 		}
 

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

@@ -1649,7 +1649,7 @@ public class ReactiveMongoTemplate implements ReactiveMongoOperations, Applicati
 
 				MongoPersistentEntity<?> entity = mappingContext.getPersistentEntity(entityClass);
 				UpdateContext updateContext = queryOperations.replaceSingleContext(mapped, true);
-				Document filter = updateContext.getMappedQuery(entity);
+				Document filter = updateContext.getReplacementQuery();
 				Document replacement = updateContext.getMappedUpdate(entity);
 
 				Mono<Document> deferredFilter;

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

@@ -1416,7 +1416,7 @@ public class MongoTemplateTests {
 		id.id = Instant.now().minusSeconds(2);
 		id.first = "foo";
 		id.second = "bar";
-		id.time = Instant.now().minusSeconds(3);
+		id.id = Instant.now().minusSeconds(3);
 
 		TypeWithMyId source = new TypeWithMyId();
 		source.id = id;
@@ -4423,7 +4423,7 @@ public class MongoTemplateTests {
 
 		String first;
 		String second;
-		Instant time;
+		Instant id;
 
 		@Field("t") Instant time;
 	}