DATAMONGO-1397 - Log command, entity and collection name in MongoTemplate.geoNear(…).

Original pull request: #348.

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2015 the original author or authors.
+ * Copyright 2010-2016 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.
@@ -137,6 +137,7 @@ import com.mongodb.util.JSONParseException;
  * @author Chuong Ngo
  * @author Christoph Strobl
  * @author Doménique Tilleuil
+ * @author Mark Paluch
  */
 @SuppressWarnings("deprecation")
 public class MongoTemplate implements MongoOperations, ApplicationContextAware {
@@ -640,6 +641,11 @@ public class MongoTemplate implements MongoOperations, ApplicationContextAware {
 			command.put("query", queryMapper.getMappedObject(query, getPersistentEntity(entityClass)));
 		}
 
+		if (LOGGER.isDebugEnabled()) {
+			LOGGER.debug(String.format("Executing geoNear using: %s for class: %s in collection: %s",
+					serializeToJsonSafely(command), entityClass, collectionName));
+		}
+
 		CommandResult commandResult = executeCommand(command, this.readPreference);
 		List<Object> results = (List<Object>) commandResult.get("results");
 		results = results == null ? Collections.emptyList() : results;