Fixing RoleMembershipImExporter

ccm-core/src/main/java/org/libreccm/categorization/CategoryIdResolver.java

@@ -73,19 +73,6 @@ public class CategoryIdResolver implements Serializable, ObjectIdResolver {
                 .save(category);
             return category;
         }
-//
-//        return CdiUtil
-//            .createCdiUtil()
-//            .findBean(CategoryRepository.class)
-//            .findByUuid(id.key.toString())
-//            .orElseThrow(
-//                () -> new IllegalArgumentException(
-//                    String.format(
-//                        "No Category with UUID %s in the database.",
-//                        id.key.toString()
-//                    )
-//                )
-//            );
     }
 
     @Override

ccm-core/src/main/java/org/libreccm/security/RoleMembershipImExporter.java

@@ -23,12 +23,17 @@ import org.libreccm.imexport.Exportable;
 import org.libreccm.imexport.Processes;
 
 import java.util.HashSet;
+import java.util.List;
 import java.util.Objects;
 import java.util.Set;
 
 import javax.inject.Inject;
 import javax.persistence.EntityManager;
 import javax.persistence.NoResultException;
+import javax.persistence.TypedQuery;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.Root;
 import javax.transaction.Transactional;
 
 /**
@@ -51,7 +56,42 @@ public class RoleMembershipImExporter
     @Override
     @Transactional(Transactional.TxType.REQUIRED)
     protected void saveImportedEntity(final RoleMembership entity) {
-        entityManager.persist(entity);
+        final CriteriaBuilder criteriaBuilder = entityManager
+            .getCriteriaBuilder();
+        final CriteriaQuery<RoleMembership> criteriaQuery = criteriaBuilder
+            .createQuery(RoleMembership.class);
+        final Root<RoleMembership> from = criteriaQuery.from(
+            RoleMembership.class
+        );
+        criteriaQuery.where(
+            criteriaBuilder.equal(
+                from.get("role"), 
+                entity.getRole()
+            )
+        );
+        criteriaQuery.where(
+            criteriaBuilder.equal(
+                from.get("member"), 
+                entity.getMember()
+            )
+        );
+        final TypedQuery<RoleMembership> query = entityManager.createQuery(
+            criteriaQuery
+        );
+        final List<RoleMembership> results = query.getResultList();
+        if (results.isEmpty()) {
+            final RoleMembership membership = new RoleMembership();
+            membership.setUuid(entity.getUuid());
+            membership.setMember(entity.getMember());
+            membership.setRole(entity.getRole());
+            entityManager.persist(membership);
+        }
+        
+//        if (entity.getMembershipId() == 0) {
+//            entityManager.persist(entity);
+//        } else {
+//            entityManager.merge(entity);
+//        }
     }
 
     @Override