From 6976a356117ac24ec543f04bab379cd48ce45436 Mon Sep 17 00:00:00 2001
From: Enrico Ottonello <enrico.ottonello@isti.cnr.it>
Date: Fri, 18 Sep 2020 17:24:36 +0200
Subject: [PATCH] has_spatial_coverage data set to optional for collection

---
 .../ariadneplus/sparql/read_collection_data_template.sparql | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_collection_data_template.sparql b/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_collection_data_template.sparql
index b46834e..828c2d6 100644
--- a/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_collection_data_template.sparql
+++ b/dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/read_collection_data_template.sparql
@@ -122,8 +122,10 @@ where {
     	{
         select *
         where {
-            %record	aocat:has_spatial_coverage ?spatialRegion .
-            ?spatialRegion  aocat:has_place_name ?spatialPlaceName .
+            optional {
+                %record	aocat:has_spatial_coverage ?spatialRegion .
+                ?spatialRegion  aocat:has_place_name ?spatialPlaceName .
+            }
             optional {
                 ?spatialRegion aocat:has_coordinate_system ?spatialCoordinateSystem .
             }