Fix sort logging in mongo template without breaking API changes

Author: christophstrobl

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

@@ -205,7 +205,7 @@ private String asString() {
 	 * @author Christoph Strobl
 	 * @since 2.0
 	 */
-	static class DelegatingQueryCursorPreparer implements CursorPreparer {
+	static class DelegatingQueryCursorPreparer implements SortingQueryCursorPreparer {
 
 		private final @Nullable CursorPreparer delegate;
 		private Optional<Integer> limit = Optional.empty();
@@ -231,6 +231,11 @@ CursorPreparer limit(int limit) {
 		public ReadPreference getReadPreference() {
 			return delegate.getReadPreference();
 		}
+
+		@Override
+		public Document getSortObject() {
+			return delegate instanceof SortingQueryCursorPreparer sqcp ? sqcp.getSortObject() : null;
+		}
 	}
 
 	/**

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

@@ -2596,7 +2596,7 @@ protected <S, T> List<T> doFind(String collectionName,
 
 		if (LOGGER.isDebugEnabled()) {
 
-			Document mappedSort = getMappedSortObject(query, entityClass);
+			Document mappedSort = preparer instanceof SortingQueryCursorPreparer sqcp ?  getMappedSortObject(sqcp.getSortObject(), entity) : null;
 			LOGGER.debug(String.format("find using query: %s fields: %s sort: %s for class: %s in collection: %s",
 					serializeToJsonSafely(mappedQuery), mappedFields, serializeToJsonSafely(mappedSort), entityClass,
 					collectionName));
@@ -2621,9 +2621,10 @@ <S, T> List<T> doFind(CollectionPreparer<MongoCollection<Document>> collectionPr
 		QueryContext queryContext = queryOperations.createQueryContext(new BasicQuery(query, fields));
 		Document mappedFields = queryContext.getMappedFields(entity, projection);
 		Document mappedQuery = queryContext.getMappedQuery(entity);
-		Document mappedSort = getMappedSortObject(query, sourceClass);
 
 		if (LOGGER.isDebugEnabled()) {
+
+			Document mappedSort = preparer instanceof SortingQueryCursorPreparer sqcp ?  getMappedSortObject(sqcp.getSortObject(), sourceClass) : null;
 			LOGGER.debug(String.format("find using query: %s fields: %s sort: %s for class: %s in collection: %s",
 					serializeToJsonSafely(mappedQuery), mappedFields, serializeToJsonSafely(mappedSort), sourceClass,
 					collectionName));
@@ -2988,12 +2989,17 @@ private Document getMappedSortObject(@Nullable Query query, Class<?> type) {
 
 	@Nullable
 	private Document getMappedSortObject(Document sortObject, Class<?> type) {
+		return getMappedSortObject(sortObject, mappingContext.getPersistentEntity(type));
+	}
+
+	@Nullable
+	private Document getMappedSortObject(Document sortObject, MongoPersistentEntity<?> entity) {
 
 		if (ObjectUtils.isEmpty(sortObject)) {
 			return null;
 		}
 
-		return queryMapper.getMappedSort(sortObject, mappingContext.getPersistentEntity(type));
+		return queryMapper.getMappedSort(sortObject, entity);
 	}
 
 	/**
@@ -3346,7 +3352,7 @@ public T doWith(Document document) {
 		}
 	}
 
-	class QueryCursorPreparer implements CursorPreparer {
+	class QueryCursorPreparer implements SortingQueryCursorPreparer {
 
 		private final Query query;
 
@@ -3444,6 +3450,11 @@ public FindIterable<Document> prepare(FindIterable<Document> iterable) {
 			return cursorToUse;
 		}
 
+		@Nullable
+		@Override
+		public Document getSortObject() {
+			return sortObject;
+		}
 	}
 
 	/**

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

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2025 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.core;
+
+import org.bson.Document;
+import org.springframework.lang.Nullable;
+
+/**
+ * @author Christoph Strobl
+ */
+interface SortingQueryCursorPreparer extends CursorPreparer {
+
+    @Nullable
+    Document getSortObject();
+}