Allow Meta annotation usage for derived queries.

We now allow applying Meta to derived queries without turning a derived query method into a annotated one.

Original pull request #4854
Closes #4852

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

@@ -21,14 +21,8 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
-import org.springframework.data.annotation.QueryAnnotation;
-
 /**
  * Annotation to declare meta-information (execution time, cursor size, disk usage) for query methods.
- * <p>
- * Annotating a repository method with this annotation forces the method to be implemented as query method (i.e. using
- * this annotation on an overridden method from a base interface or fragment interface), similar to using
- * {@link Query @Query}.
  *
  * @author Christoph Strobl
  * @author Mark Paluch
@@ -37,7 +31,6 @@ import org.springframework.data.annotation.QueryAnnotation;
 @Retention(RetentionPolicy.RUNTIME)
 @Target({ ElementType.METHOD, ElementType.ANNOTATION_TYPE })
 @Documented
-@QueryAnnotation
 public @interface Meta {
 
 	/**

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

@@ -63,6 +63,7 @@ public interface PersonRepository extends MongoRepository<Person, String>, Query
 	 * @param lastname
 	 * @return
 	 */
+	@Meta
 	List<Person> findByLastname(String lastname);
 
 	List<Person> findByLastnameStartsWith(String prefix);

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

@@ -38,6 +38,7 @@ import org.springframework.data.mongodb.core.convert.MongoConverter;
 import org.springframework.data.mongodb.core.convert.NoOpDbRefResolver;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
 import org.springframework.data.mongodb.core.query.TextCriteria;
+import org.springframework.data.mongodb.repository.Meta;
 import org.springframework.data.mongodb.repository.MongoRepository;
 import org.springframework.data.mongodb.repository.Person;
 import org.springframework.data.mongodb.repository.Person.Sex;
@@ -127,6 +128,12 @@ class PartTreeMongoQueryUnitTests {
 		assertThat(deriveQueryFromMethod("findPersonBy", new Object[0]).getFieldsObject()).isEmpty();
 	}
 
+	@Test // GH-4852
+	void appliesMetaToPartTreeQuery() {
+		assertThat(deriveQueryFromMethod("findPersonBy", new Object[0]).getMeta()
+				.getMaxTimeMsec()).isEqualTo(1234L);
+	}
+
 	@Test // DATAMONGO-1345
 	void restrictsQueryToFieldsRequiredForProjection() {
 
@@ -193,7 +200,10 @@ class PartTreeMongoQueryUnitTests {
 		PartTreeMongoQuery partTreeQuery = createQueryForMethod(method, types);
 
 		MongoParameterAccessor accessor = new MongoParametersParameterAccessor(partTreeQuery.getQueryMethod(), args);
-		return partTreeQuery.createQuery(new ConvertingParameterAccessor(mongoOperationsMock.getConverter(), accessor));
+
+		org.springframework.data.mongodb.core.query.Query query = partTreeQuery.createQuery(new ConvertingParameterAccessor(mongoOperationsMock.getConverter(), accessor));
+		partTreeQuery.applyQueryMetaAttributesWhenPresent(query);
+		return query;
 	}
 
 	private PartTreeMongoQuery createQueryForMethod(String methodName, Class<?>... paramTypes) {
@@ -230,6 +240,7 @@ class PartTreeMongoQueryUnitTests {
 		@Query(fields = "{ 'firstname }")
 		Person findByAge(Integer age);
 
+		@Meta(maxExecutionTimeMs = 1234)
 		Person findPersonBy();
 
 		PersonProjection findPersonProjectedBy();