Uncached Queries

crates/bevy_ecs/Cargo.toml

@@ -52,6 +52,10 @@ bevy_debug_stepping = []
 ## This will often provide more detailed error messages.
 track_location = []
 
+## Makes queries become uncached by default.
+## Mostly useful for unit tests.
+query_uncached_default = []
+
 # Executor Backend
 
 ## Uses `async-executor` as a task execution backend.

crates/bevy_ecs/src/entity_disabling.rs

@@ -97,7 +97,7 @@
 //! [`Query` performance]: crate::prelude::Query#performance
 
 use crate::{
-    component::{ComponentId, Components, StorageType},
+    component::ComponentId,
     query::FilteredAccess,
     world::{FromWorld, World},
 };
@@ -248,14 +248,6 @@ impl DefaultQueryFilters {
             }
         }
     }
-
-    pub(super) fn is_dense(&self, components: &Components) -> bool {
-        self.disabling_ids().all(|component_id| {
-            components
-                .get_info(component_id)
-                .is_some_and(|info| info.storage_type() == StorageType::Table)
-        })
-    }
 }
 
 #[cfg(test)]

crates/bevy_ecs/src/lib.rs

@@ -88,7 +88,10 @@ pub mod prelude {
         message::{Message, MessageMutator, MessageReader, MessageWriter, Messages},
         name::{Name, NameOrEntity},
         observer::{Observer, On, Trigger},
-        query::{Added, Allow, AnyOf, Changed, Has, Or, QueryBuilder, QueryState, With, Without},
+        query::{
+            Added, Allow, AnyOf, Changed, Has, Or, QueryBuilder, QueryState, UncachedQueryState,
+            With, Without,
+        },
         related,
         relationship::RelationshipTarget,
         resource::Resource,
@@ -101,7 +104,7 @@ pub mod prelude {
             Command, Commands, Deferred, EntityCommand, EntityCommands, If, In, InMut, InRef,
             IntoSystem, Local, NonSend, NonSendMut, ParamSet, Populated, Query, ReadOnlySystem,
             Res, ResMut, Single, System, SystemIn, SystemInput, SystemParamBuilder,
-            SystemParamFunction,
+            SystemParamFunction, UncachedQuery,
         },
         world::{
             EntityMut, EntityRef, EntityWorldMut, FilteredResources, FilteredResourcesMut,
@@ -475,8 +478,12 @@ mod tests {
         assert_eq!(ents, &[(e, A(123))]);
 
         let f = world.spawn((TableStored("def"), A(456), B(1))).id();
-        let ents = query.iter(&world).map(|(e, &i)| (e, i)).collect::<Vec<_>>();
-        assert_eq!(ents, &[(e, A(123)), (f, A(456))]);
+        let ents = query
+            .iter(&world)
+            .map(|(e, &i)| (e, i))
+            .collect::<HashSet<_>>();
+        assert!(ents.contains(&(e, A(123))));
+        assert!(ents.contains(&(f, A(456))));
     }
 
     #[test]