fixed querying by super class attribute

Author: Martin Fekete

rsql-common/src/main/java/io/github/perplexhub/rsql/RSQLVisitorBase.java

@@ -15,6 +15,7 @@
 
 import lombok.Getter;
 import org.hibernate.metamodel.model.domain.ManagedDomainType;
+import org.hibernate.metamodel.model.domain.PersistentAttribute;
 import org.springframework.core.convert.ConversionFailedException;
 import org.springframework.core.convert.support.ConfigurableConversionService;
 import org.springframework.orm.jpa.vendor.Database;
@@ -58,6 +59,10 @@ public static Database getDatabase(EntityManager entityManager) {
 		// W/A found here: https://hibernate.atlassian.net/browse/HHH-18569
 		// breaking change on hibernate side: https://github.com/hibernate/hibernate-orm/pull/6924#discussion_r1250474422
 		if (classMetadata instanceof ManagedDomainType managedDomainType) {
+			PersistentAttribute<T,?> attribute = managedDomainType.findAttribute( property );
+			if ( attribute != null ) {
+				return attribute;
+			}
 			return managedDomainType.findSubTypesAttribute(property);
 		}
 		return classMetadata.getAttribute(property);

rsql-common/src/test/java/io/github/perplexhub/rsql/repository/jpa/AdminProjectRepository.java

@@ -0,0 +1,9 @@
+package io.github.perplexhub.rsql.repository.jpa;
+
+import io.github.perplexhub.rsql.model.AdminProject;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+
+public interface AdminProjectRepository extends JpaRepository<AdminProject, Integer>, JpaSpecificationExecutor<AdminProject> {
+
+}

rsql-common/src/test/java/io/github/perplexhub/rsql/repository/jpa/ProjectRepository.java

@@ -0,0 +1,9 @@
+package io.github.perplexhub.rsql.repository.jpa;
+
+import io.github.perplexhub.rsql.model.Project;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+
+public interface ProjectRepository extends JpaRepository<Project, Integer>, JpaSpecificationExecutor<Project> {
+
+}

rsql-jpa/src/test/java/io/github/perplexhub/rsql/RSQLJPASupportTest.java

@@ -18,10 +18,14 @@
 import java.util.*;
 
 import io.github.perplexhub.rsql.custom.CustomType;
+import io.github.perplexhub.rsql.model.Project;
+import io.github.perplexhub.rsql.model.AdminProject;
 import io.github.perplexhub.rsql.model.account.AccountEntity;
 import io.github.perplexhub.rsql.model.account.AddressEntity;
 import io.github.perplexhub.rsql.model.account.AddressHistoryEntity;
 import io.github.perplexhub.rsql.repository.jpa.AccountRepository;
+import io.github.perplexhub.rsql.repository.jpa.AdminProjectRepository;
+import io.github.perplexhub.rsql.repository.jpa.ProjectRepository;
 import io.github.perplexhub.rsql.repository.jpa.custom.CustomTypeRepository;
 import io.github.perplexhub.rsql.custom.EntityWithCustomType;
 import jakarta.persistence.criteria.Expression;
@@ -70,6 +74,12 @@ class RSQLJPASupportTest {
 	@Autowired
 	private CustomTypeRepository customTypeRepository;
 
+	@Autowired
+	private AdminProjectRepository adminProjectRepository;
+
+	@Autowired
+	private ProjectRepository projectRepository;
+
 	@Autowired
 	AccountRepository accountRepository;
 
@@ -1441,6 +1451,18 @@ void testSearchWithReducedPathUsingRSQLMapping() {
 		Assertions.assertThat(result).hasSize(1);
 	}
 
+	@Test
+	void testSearchByParentAttribute() {
+		List<AdminProject> result = adminProjectRepository.findAll(RSQLJPASupport.rsql("name=='someProjectName'"));
+		Assertions.assertThat(result).hasSize(1);
+	}
+
+	@Test
+	void testSearchBySubtypeAttribute() {
+		List<Project> result = projectRepository.findAll(RSQLJPASupport.rsql("departmentName==someDepartmentName"));
+		Assertions.assertThat(result).hasSize(1);
+	}
+
 	@BeforeEach
 	void setUp() {
 		getPropertyWhitelist().clear();