Materialize project hierarchies in separate table

commons-persistence/src/main/java/org/dependencytrack/persistence/model/Project.java

@@ -252,6 +252,14 @@ public void setInactiveSince(Date inactiveSince) {
         this.inactiveSince = inactiveSince;
     }
 
+    public Project getParent() {
+        return parent;
+    }
+
+    public void setParent(Project parent) {
+        this.parent = parent;
+    }
+
     public Collection<Project> getChildren() {
         return children;
     }

commons-persistence/src/main/java/org/dependencytrack/persistence/repository/ProjectRepository.java

@@ -0,0 +1,57 @@
+/*
+ * This file is part of Dependency-Track.
+ *
+ * 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
+ *
+ *   http://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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) OWASP Foundation. All Rights Reserved.
+ */
+package org.dependencytrack.persistence.repository;
+
+import io.quarkus.hibernate.orm.panache.PanacheRepository;
+import org.dependencytrack.persistence.model.Project;
+
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.persistence.Query;
+import java.util.UUID;
+
+import static org.hibernate.jpa.HibernateHints.HINT_READ_ONLY;
+
+/**
+ * @since 0.6.0
+ */
+@ApplicationScoped
+public class ProjectRepository implements PanacheRepository<Project> {
+
+    public boolean isParentOfActiveChild(final Project parent, final UUID childUuid) {
+        final Query query = getEntityManager().createNativeQuery("""
+                SELECT EXISTS(
+                  SELECT 1
+                    FROM "PROJECT_HIERARCHY" AS hierarchy
+                   INNER JOIN "PROJECT" AS child_project
+                      ON child_project."ID" = hierarchy."CHILD_PROJECT_ID"
+                   WHERE hierarchy."PARENT_PROJECT_ID" = :parentId
+                     AND hierarchy."DEPTH" > 0
+                     AND child_project."ID" = (SELECT "ID" FROM "PROJECT" WHERE "UUID" = :childUuid)
+                     AND child_project."INACTIVE_SINCE" IS NULL
+                )
+                """);
+
+        return (boolean) query
+                .setParameter("parentId", parent.getId())
+                .setParameter("childUuid", childUuid)
+                .setHint(HINT_READ_ONLY, true)
+                .getSingleResult();
+    }
+
+}

commons-persistence/src/test/java/org/dependencytrack/persistence/repository/ProjectRepositoryTest.java

@@ -0,0 +1,67 @@
+/*
+ * This file is part of Dependency-Track.
+ *
+ * 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
+ *
+ *   http://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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) OWASP Foundation. All Rights Reserved.
+ */
+package org.dependencytrack.persistence.repository;
+
+import io.quarkus.test.TestTransaction;
+import io.quarkus.test.junit.QuarkusTest;
+import org.dependencytrack.persistence.model.Project;
+import org.junit.jupiter.api.Test;
+
+import jakarta.inject.Inject;
+import java.util.Date;
+import java.util.UUID;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@QuarkusTest
+class ProjectRepositoryTest {
+
+    @Inject
+    ProjectRepository projectRepository;
+
+    @Test
+    @TestTransaction
+    void testIsParentOfActiveChild() {
+        final var parentProject = new Project();
+        parentProject.setId(1);
+        parentProject.setUuid(UUID.fromString("adbf4d72-6ebc-429a-955b-265a8b8ba997"));
+        parentProject.setName("acme-app-parent");
+        projectRepository.persist(parentProject);
+
+        final var childProjectA = new Project();
+        childProjectA.setId(2);
+        childProjectA.setUuid(UUID.fromString("970829b1-3112-42db-a5ab-73391463e349"));
+        childProjectA.setParent(parentProject);
+        childProjectA.setName("acme-app-child-a");
+        projectRepository.persist(childProjectA);
+
+        final var childProjectB = new Project();
+        childProjectB.setId(3);
+        childProjectB.setUuid(UUID.fromString("bbf9e846-cc5a-493b-bc9a-ce944795a5ad"));
+        childProjectB.setParent(parentProject);
+        childProjectB.setName("acme-app-child-b");
+        childProjectB.setInactiveSince(new Date());
+        projectRepository.persist(childProjectB);
+
+        assertThat(projectRepository.isParentOfActiveChild(parentProject, childProjectA.getUuid())).isTrue();
+        assertThat(projectRepository.isParentOfActiveChild(parentProject, childProjectB.getUuid())).isFalse();
+        assertThat(projectRepository.isParentOfActiveChild(parentProject, parentProject.getUuid())).isFalse();
+    }
+
+}