orasw_download_patches: bugfix for empty oracle_databases or oracle_pdbs

Author: Rendanic

changelogs/fragments/download.yml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - "orasw_download_patches: bugfix for empty oracle_databases or oracle_pdbs (oravirt#480)"

roles/orasw_download_patches/tasks/main.yml

@@ -36,9 +36,12 @@
     - name: Download APEX images
       ansible.builtin.include_tasks: apex.yml
       when:
-        - (oracle_databases | selectattr('apex_state', 'defined') | list | length > 0
+        - ((oracle_databases | default([]) | length > 0
+            and oracle_databases | selectattr('apex_state', 'defined') | list | length > 0)
           or
-           oracle_pdbs | selectattr('apex_state', 'defined') | list | length > 0
+           (oracle_databases | default([]) | length > 0
+           and oracle_pdbs | selectattr('apex_state', 'defined') | list | length > 0
+           )
           )
 
     - name: Login to Oracle