Replace getattr with direct config access for schema_version_mode

Author: koxudaxi

src/datamodel_code_generator/parser/jsonschema.py

@@ -791,8 +791,7 @@ def schema_paths(self) -> list[tuple[str, list[str]]]:
         fallback_path = f"#/{fallback_key}"
 
         # Strict mode: only use version-specific path
-        version_mode = getattr(self.config, "schema_version_mode", None)
-        if version_mode == VersionMode.Strict:
+        if self.config.schema_version_mode == VersionMode.Strict:
             return [(str(primary_path), [str(primary_key)])]
 
         # Lenient mode (default): check both paths, primary first
@@ -3681,8 +3680,7 @@ def _check_version_specific_features(
         This method checks the raw schema data before Pydantic validation
         to detect features that may not be valid for the declared version.
         """
-        version_mode = getattr(self.config, "schema_version_mode", None)
-        if version_mode != VersionMode.Strict:
+        if self.config.schema_version_mode != VersionMode.Strict:
             return
 
         # Check boolean schemas (Draft 6+)
@@ -3749,8 +3747,7 @@ def _check_array_version_features(
         Warns when prefixItems is used in versions that don't support it,
         or when items as array (tuple style) is used in Draft 2020-12+.
         """
-        version_mode = getattr(self.config, "schema_version_mode", None)
-        if version_mode != VersionMode.Strict:
+        if self.config.schema_version_mode != VersionMode.Strict:
             return
 
         # Check prefixItems usage (Draft 2020-12+ only)

src/datamodel_code_generator/parser/openapi.py

@@ -255,8 +255,7 @@ def get_data_type(self, obj: JsonSchemaObject) -> DataType:
                     obj.type = [obj.type, "null"]
             else:
                 # OpenAPI 3.1+: nullable is deprecated, still process but warn in Strict mode
-                version_mode = getattr(self.config, "schema_version_mode", None)
-                if version_mode == VersionMode.Strict:
+                if self.config.schema_version_mode == VersionMode.Strict:
                     warn(
                         'nullable keyword is deprecated in OpenAPI 3.1, use type: ["string", "null"] instead',
                         DeprecationWarning,