#559 return bson filter that don't match for visitMetadata because se…

…arching for metadata isn't supported; Signed-off-by: Stefan Maute <stefan.maute@bosch.io>
eclipse-ditto · Sep 23, 2021 · 5766950 · 5766950
1 parent ba476eb
commit 5766950
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/.../ditto/thingsearch/service/persistence/read/expression/visitors/GetExistsBsonVisitor.java b/.../ditto/thingsearch/service/persistence/read/expression/visitors/GetExistsBsonVisitor.java
@@ -113,7 +113,8 @@ private Bson matchKey(final String keyRegex) {
 
     @Override
     public Bson visitMetadata(final String key) {
-        return null;
+        // search on _metadata is not supported, return filter that don't match
+        return Filters.eq("nomatch");
     }
 
     private static String escapeAndWrapExistsRegex(final String string) {

diff --git a/.../ditto/thingsearch/service/persistence/read/expression/visitors/GetFilterBsonVisitor.java b/.../ditto/thingsearch/service/persistence/read/expression/visitors/GetFilterBsonVisitor.java
@@ -92,7 +92,8 @@ public Bson visitFeatureIdDesiredProperty(final CharSequence featureId, final Ch
 
     @Override
     public Bson visitMetadata(final String key) {
-        return null;
+        // search on _metadata is not supported, return filter that don't match
+        return Filters.eq("nomatch");
     }
 
     @Override