From 1a585e9fe3227765e6244f111ca37797ae8aa52b Mon Sep 17 00:00:00 2001
From: Kilian Schuettler <kilian.schuettler@knecon.com>
Date: Thu, 20 Jun 2024 13:42:29 +0200
Subject: [PATCH] RED-9375: fix component mapping endpoint validation

---
 .../v1/processor/service/ComponentMappingService.java         | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/service/ComponentMappingService.java b/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/service/ComponentMappingService.java
index 845f21b6c..206632df3 100644
--- a/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/service/ComponentMappingService.java
+++ b/persistence-service-v1/persistence-service-processor-v1/src/main/java/com/iqser/red/service/persistence/management/v1/processor/service/ComponentMappingService.java
@@ -140,6 +140,10 @@ public class ComponentMappingService {
 
             columnLabels = rows.remove(0); // remove header row
 
+            if (Arrays.stream(columnLabels).distinct().count() < columnLabels.length) {
+                throw new BadRequestException("Column labels may not contain duplicates!");
+            }
+
             numberOfLines = (int) reader.getLinesRead() - 1; // subtract header row
 
             rows.sort(CSV_SORTER);