From ab9c6ea6022168ab442fe81d8356525b68b653c1 Mon Sep 17 00:00:00 2001
From: Gaofei Zhao <gzd23@mail.missouri.edu>
Date: Fri, 10 Dec 2021 16:03:29 -0500
Subject: [PATCH] Do not fetch structural variants data when there are no
 applicable samples

---
 src/pages/resultsView/ResultsViewPageStore.ts | 27 ++++++++++++-------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/src/pages/resultsView/ResultsViewPageStore.ts b/src/pages/resultsView/ResultsViewPageStore.ts
index dc186430601..20dfdd54517 100644
--- a/src/pages/resultsView/ResultsViewPageStore.ts
+++ b/src/pages/resultsView/ResultsViewPageStore.ts
@@ -3177,17 +3177,24 @@ export class ResultsViewPageStore
                 [] as StructuralVariantFilter['sampleMolecularIdentifiers']
             );
 
-            const data = {
-                entrezGeneIds: _.map(
-                    this.genes.result,
-                    (gene: Gene) => gene.entrezGeneId
-                ),
-                sampleMolecularIdentifiers: filters,
-            } as StructuralVariantFilter;
+            // filters can be an empty list
+            // when all selected samples are coming from studies that don't have structural variant profile
+            // in this case, we should not fetch structural variants data
+            if (_.isEmpty(filters)) {
+                return [];
+            } else {
+                const data = {
+                    entrezGeneIds: _.map(
+                        this.genes.result,
+                        (gene: Gene) => gene.entrezGeneId
+                    ),
+                    sampleMolecularIdentifiers: filters,
+                } as StructuralVariantFilter;
 
-            return await client.fetchStructuralVariantsUsingPOST({
-                structuralVariantFilter: data,
-            });
+                return await client.fetchStructuralVariantsUsingPOST({
+                    structuralVariantFilter: data,
+                });
+            }
         },
     });