Fix query for non-existing key in nested dictionary

Author: jedelbo

src/realm/collection.cpp

@@ -168,7 +168,7 @@ void Collection::get_any(QueryCtrlBlock& ctrl, Mixed val, size_t index)
                             ctrl.matches.back().push_back(k);
                         });
                     }
-                    else {
+                    else if (end_of_path) {
                         ctrl.matches.back().push_back(Mixed());
                     }
                     return;

src/realm/query_expression.hpp

@@ -2065,18 +2065,18 @@ class Columns<Mixed> : public SimpleQuerySupport<Mixed> {
         }
         else {
             if (index.initialize()) {
-                Value<Mixed> destination;
-                destination.init(false, 1);
-                SimpleQuerySupport::evaluate(index, destination);
+                Value<Mixed> dest;
+                dest.init(false, 1);
+                SimpleQuerySupport::evaluate(index, dest);
 
                 m_ctrl.matches.clear();
-                if (auto sz = destination.size()) {
+                if (auto sz = dest.size()) {
                     for (size_t i = 0; i < sz; i++) {
-                        Collection::get_any(m_ctrl, destination.get(i), 0);
+                        Collection::get_any(m_ctrl, dest.get(i), 0);
                     }
                 }
                 if (!index.set_size(m_ctrl.matches.size())) {
-                    destination.init(true, 0);
+                    dest.init(true, 0);
                     return;
                 }
             }

test/test_parser.cpp

@@ -5353,6 +5353,12 @@ TEST(Parser_NestedMixedDictionaryList)
     list_george.add(2);
     list_george.add(3);
 
+    Obj ringo = persons->create_object_with_primary_key("Ringo");
+    ringo.set(col_self, ringo.get_key());
+    ringo.set_collection(col, CollectionType::Dictionary);
+    auto dict_ringo = ringo.get_dictionary(col);
+    dict_ringo.insert("Foo", "Bar");
+
     auto q = persons->column<Mixed>(col).path({"instruments", 0, "strings"}) == 6;
     CHECK_EQUAL(q.count(), 1);
 
@@ -5369,15 +5375,16 @@ TEST(Parser_NestedMixedDictionaryList)
     verify_query(test_context, persons, "properties[*] == {3, 2, 1}", 0);
     verify_query(test_context, persons, "properties[*] == {1, 2, 3}", 1);
     verify_query(test_context, persons, "ANY properties[*] == 2", 1);
-    verify_query(test_context, persons, "NONE properties[*] == 2", 2);
+    verify_query(test_context, persons, "NONE properties[*] == 2", 3);
     verify_query(test_context, persons, "properties.@keys == 'instruments'", 2);
     verify_query(test_context, persons, "properties.@keys == 'pets'", 2);
     verify_query(test_context, persons, "properties.@keys == 'tickets'", 1);
     verify_query(test_context, persons, "properties.@size == 3", 2);
     verify_query(test_context, persons, "properties.instruments.@size == 2", 1);
-    verify_query(test_context, persons, "properties.@type == 'object'", 2);
+    verify_query(test_context, persons, "properties.@type == 'object'", 3);
     verify_query(test_context, persons, "properties.@type == 'array'", 1);
-    verify_query(test_context, persons, "properties.@type == 'collection'", 3);
+    verify_query(test_context, persons, "properties.@type == 'collection'", 4);
+    verify_query(test_context, persons, "properties.Foo == 'Bar'", 1);
 }
 
 TEST(Parser_NestedDictionaryDeep)