From 7db2c6e781ef278f72efd446692b89049ef93e85 Mon Sep 17 00:00:00 2001
From: D065023 <david.kunz@sap.com>
Date: Mon, 30 Dec 2019 14:06:41 +0100
Subject: [PATCH] tombstone logic

---
 packages/bookshop/srv/admin-service.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/packages/bookshop/srv/admin-service.js b/packages/bookshop/srv/admin-service.js
index 971e8ec2..5f448164 100644
--- a/packages/bookshop/srv/admin-service.js
+++ b/packages/bookshop/srv/admin-service.js
@@ -45,9 +45,15 @@ module.exports = cds.service.impl(async () => {
     if (replicas.length === 0) return //> not affected
 
     // fetch changed data from S/4 -> might be less than local due to deletes
-    const changed = (await SELECT.from(externalAddresses).where({
+    const externals = await SELECT.from(externalAddresses).where({
       contact
-    })).filter(({ ID }) => replicas.some(rep => ID === rep.ID))
+    })
+
+    const changed = replicas.map(rep => {
+      const ext = externals.find(ext => ext.ID === rep.ID)
+      if (ext) return ext
+      return { ...rep, ...{ tombstone: true } }
+    })
 
     // update local replicas with changes from S/4
     const local = db.transaction(msg) //> using that variant to benefit from bulk runs