Change dict to set as only fqns needed

Author: crericha

sqlmesh/dbt/basemodel.py

@@ -333,7 +333,7 @@ def sqlmesh_model_kwargs(
                 {
                     source.canonical_name(context)
                     for source in model_context.sources.values()
-                    if source.fqn not in context.models_by_fqn
+                    if source.fqn not in context.model_fqns
                     # Allow dbt projects to reference a model as a source without causing a cycle
                 },
             ),

sqlmesh/dbt/context.py

@@ -51,7 +51,7 @@ class DbtContext:
     _project_name: t.Optional[str] = None
     _variables: t.Dict[str, t.Any] = field(default_factory=dict)
     _models: t.Dict[str, ModelConfig] = field(default_factory=dict)
-    _models_by_fqn: t.Dict[str, ModelConfig] = field(default_factory=dict)
+    _model_fqns: t.Set[str] = field(default_factory=set)
     _seeds: t.Dict[str, SeedConfig] = field(default_factory=dict)
     _sources: t.Dict[str, SourceConfig] = field(default_factory=dict)
     _refs: t.Dict[str, t.Union[ModelConfig, SeedConfig]] = field(default_factory=dict)
@@ -145,7 +145,7 @@ def models(self) -> t.Dict[str, ModelConfig]:
     def models(self, models: t.Dict[str, ModelConfig]) -> None:
         self._models = {}
         self._refs = {}
-        self._models_by_fqn = {}
+        self._model_fqns = set()
         self.add_models(models)
 
     def add_models(self, models: t.Dict[str, ModelConfig]) -> None:
@@ -154,10 +154,10 @@ def add_models(self, models: t.Dict[str, ModelConfig]) -> None:
         self._jinja_environment = None
 
     @property
-    def models_by_fqn(self) -> t.Dict[str, ModelConfig]:
-        if not self._models_by_fqn:
-            self._models_by_fqn = {model.fqn: model for model in self._models.values()}
-        return self._models_by_fqn
+    def model_fqns(self) -> t.Set[str]:
+        if not self._model_fqns:
+            self._model_fqns = {model.fqn for model in self._models.values()}
+        return self._model_fqns
 
     @property
     def seeds(self) -> t.Dict[str, SeedConfig]: