feat: support pydantic-compat v0.2. (#236)

src/ome_types/_pydantic_compat.py

@@ -20,10 +20,13 @@ def field_type(field: FieldInfo) -> Any:
 
     def field_regex(obj: type[BaseModel], field_name: str) -> str | None:
         field_info = obj.model_fields[field_name]
-        if field_info.json_schema_extra and isinstance(
-            field_info.json_schema_extra, dict
-        ):
-            return field_info.json_schema_extra.get("pattern")  # type: ignore
+        meta = field_info.json_schema_extra or {}
+        # if a "metadata" key exists... use it.
+        # After pydantic-compat 0.2, this is where it will be.
+        if "metadata" in meta:  # type: ignore
+            meta = meta["metadata"]  # type: ignore
+        if meta:
+            return meta.get("pattern")  # type: ignore
         return None
 
     def get_default(f: FieldInfo) -> Any:

src/xsdata_pydantic_basemodel/pydantic_compat.py

@@ -21,11 +21,16 @@
     from pydantic_core import PydanticUndefined as Undefined
 
     def _get_metadata(pydantic_field: FieldInfo) -> dict[str, Any]:
-        return (
+        meta = (
             pydantic_field.json_schema_extra
             if isinstance(pydantic_field.json_schema_extra, dict)
             else {}
         )
+        # if a "metadata" key exists... use it.
+        # After pydantic-compat 0.2, this is where it will be.
+        if "metadata" in meta:
+            meta = meta["metadata"]  # type: ignore
+        return meta
 
 else:
     from pydantic.fields import Undefined as Undefined  # type: ignore