From 28f57ed34462f6f48e91cdad0160ef4f817b1365 Mon Sep 17 00:00:00 2001
From: Elena Poelman <elena.poelman@redpencil.io>
Date: Mon, 2 Dec 2024 13:44:15 +0100
Subject: [PATCH] workaround(sparql-queries): replace OPTIONAL by UNION
 statements to work around virtuoso duplication bug

---
 .changeset/ninety-tomatoes-swim.md  |  5 +++++
 app/config/mandatee-table-config.js | 18 ++++++++++++++++--
 2 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/ninety-tomatoes-swim.md

diff --git a/.changeset/ninety-tomatoes-swim.md b/.changeset/ninety-tomatoes-swim.md
new file mode 100644
index 000000000..a7066aabd
--- /dev/null
+++ b/.changeset/ninety-tomatoes-swim.md
@@ -0,0 +1,5 @@
+---
+'frontend-gelinkt-notuleren': patch
+---
+
+Work around virtuoso optional-nested-select duplication bug by replacing `OPTIONAL` statements by `UNION` statements
diff --git a/app/config/mandatee-table-config.js b/app/config/mandatee-table-config.js
index 73854794e..e27b5f43a 100644
--- a/app/config/mandatee-table-config.js
+++ b/app/config/mandatee-table-config.js
@@ -1332,9 +1332,16 @@ export const mandateeTableConfigRMW = (meeting) => {
             ?mandataris a mandaat:Mandataris.
             ?mandataris mandaat:isBestuurlijkeAliasVan ?persoon.
             ?mandataris org:hasMembership/org:organisation ?fractie.
-            OPTIONAL {
+
+            {
               ?mandataris mandaat:einde ?persoon_mandaat_einde.
             }
+            UNION
+            {
+              FILTER NOT EXISTS {
+                ?mandataris mandaat:einde ?persoon_mandaat_einde.
+              }
+            }
 
             ?fractie a mandaat:Fractie.
             ?fractie regorg:legalName ?fractie_naam.
@@ -1438,9 +1445,16 @@ export const mandateeTableConfigRMW = (meeting) => {
             ?mandataris mandaat:isBestuurlijkeAliasVan ?persoon.
             ?mandataris org:hasMembership/org:organisation ?fractie.
             ?mandataris mandaat:start ?mandaat_start.
-            OPTIONAL {
+
+            {
               ?mandataris mandaat:einde ?mandaat_einde.
             }
+            UNION
+            {
+              FILTER NOT EXISTS {
+                ?mandataris mandaat:einde ?mandaat_einde.
+              }
+            }
 
             ?fractie a mandaat:Fractie.
             ?fractie regorg:legalName ?fractie_naam.