From fb68b47c5b310f6cfdabf6c7078b44e87dae74fd Mon Sep 17 00:00:00 2001
From: Paul Z <info@pfz4.de>
Date: Sun, 30 Apr 2023 11:55:34 +0200
Subject: [PATCH] related false when objects do not exist

---
 graph.dat           | 10 ++++++----
 graph.dat.bak       | 10 ++++++----
 src/grpc_service.rs |  8 +++++---
 3 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/graph.dat b/graph.dat
index c4f5c07..b723c60 100644
--- a/graph.dat
+++ b/graph.dat
@@ -1,10 +1,12 @@
-[user:bob]
+[test:hello]
 
 [doc:foo]
-read = [doc:foo#owner, user:bob]
 owner = [user:alice]
-
-[user:oscar]
+read = [user:bob, doc:foo#owner]
 
 [user:alice]
 
+[user:bob]
+
+[user:oscar]
+
diff --git a/graph.dat.bak b/graph.dat.bak
index 9dc7a90..20ee74e 100644
--- a/graph.dat.bak
+++ b/graph.dat.bak
@@ -1,10 +1,12 @@
-[user:bob]
+[test:hello]
 
 [doc:foo]
-read = [user:bob, doc:foo#owner]
+read = [doc:foo#owner, user:bob]
 owner = [user:alice]
 
-[user:oscar]
-
 [user:alice]
 
+[user:bob]
+
+[user:oscar]
+
diff --git a/src/grpc_service.rs b/src/grpc_service.rs
index 0d8856a..04f5bf0 100644
--- a/src/grpc_service.rs
+++ b/src/grpc_service.rs
@@ -126,9 +126,11 @@ impl QueryService for GraphService {
     ) -> Result<Response<IsRelatedToResponse>, Status> {
         let graph = self.graph.lock().await;
 
-        let (src, dst) = transform_relation(request.get_ref(), &graph)?;
-
-        let related = graph.is_related_to(src, dst);
+        let related = if let Ok((src, dst)) = transform_relation(request.get_ref(), &graph) {
+            graph.is_related_to(src, dst)
+        } else {
+            false
+        };
 
         Ok(Response::new(IsRelatedToResponse { related }))
     }