merge latest from master

list.cpp

@@ -60,6 +60,11 @@ void List::remove(std::size_t row_ndx) {
     m_link_view->remove(row_ndx);
 }
 
+Query List::get_query() {
+    verify_attached();
+    return m_link_view->get_target_table().where(m_link_view);
+}
+
 void List::verify_valid_row(std::size_t row_ndx, bool insertion) {
     size_t size = m_link_view->size();
     if (row_ndx > size || (!insertion && row_ndx == size)) {

list.hpp

@@ -47,6 +47,8 @@ namespace realm {
         template<typename ValueType, typename ContextType>
         void set(ContextType ctx, ValueType value, size_t list_ndx);
 
+        Query get_query();
+
         void verify_valid_row(std::size_t row_ndx, bool insertion = false);
         void verify_attached();
         void verify_in_tranaction();

results.cpp

@@ -67,6 +67,17 @@ void Results::validate_write() const
         throw InvalidTransactionException("Must be in a write transaction");
 }
 
+void Results::set_live(bool live)
+{
+    if (!live && m_mode == Mode::Table) {
+        m_query = m_table->where();
+        m_mode = Mode::Query;
+    }
+
+    update_tableview();
+    m_live = live;
+}
+
 size_t Results::size()
 {
     validate_read();
@@ -94,7 +105,7 @@ RowExpr Results::get(size_t row_ndx)
         case Mode::TableView:
             update_tableview();
             if (row_ndx < m_table_view.size())
-                return m_table_view.get(row_ndx);
+                return (!m_live && !m_table_view.is_row_attached(row_ndx)) ? RowExpr() : m_table_view.get(row_ndx);
             break;
     }
 
@@ -148,7 +159,9 @@ void Results::update_tableview()
             m_mode = Mode::TableView;
             break;
         case Mode::TableView:
+            if (m_live) {
                 m_table_view.sync_if_needed();
+            }
             break;
     }
 }

results.hpp

@@ -74,6 +74,9 @@ public:
     // Get the object type which will be returned by get()
     StringData get_object_type() const noexcept { return get_object_schema().name; }
 
+    // Set whether the TableView should sync if needed before accessing results
+    void set_live(bool live);
+
     // Get the size of this results
     // Can be either O(1) or O(N) depending on the state of things
     size_t size();
@@ -168,6 +171,7 @@ private:
     TableView m_table_view;
     Table* m_table = nullptr;
     SortOrder m_sort;
+    bool m_live = true;
 
     Mode m_mode = Mode::Empty;