multiple: pydantic 2 compatibility, v0.3 (#26443)

Signed-off-by: ChengZi <chen.zhang@zilliz.com>
Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>
Co-authored-by: Dan O'Donovan <dan.odonovan@gmail.com>
Co-authored-by: Tom Daniel Grande <tomdgrande@gmail.com>
Co-authored-by: Grande <Tom.Daniel.Grande@statsbygg.no>
Co-authored-by: Bagatur <baskaryan@gmail.com>
Co-authored-by: ccurme <chester.curme@gmail.com>
Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
Co-authored-by: Tomaz Bratanic <bratanic.tomaz@gmail.com>
Co-authored-by: ZhangShenao <15201440436@163.com>
Co-authored-by: Friso H. Kingma <fhkingma@gmail.com>
Co-authored-by: ChengZi <chen.zhang@zilliz.com>
Co-authored-by: Nuno Campos <nuno@langchain.dev>
Co-authored-by: Morgante Pell <morgantep@google.com>

libs/community/langchain_community/utilities/arcee.py

@@ -6,8 +6,8 @@ from enum import Enum
 from typing import Any, Dict, List, Literal, Mapping, Optional, Union
 
 import requests
-from langchain_core.pydantic_v1 import BaseModel, SecretStr, root_validator
 from langchain_core.retrievers import Document
+from pydantic import BaseModel, SecretStr, model_validator
 
 
 class ArceeRoute(str, Enum):
@@ -51,8 +51,9 @@ class DALMFilter(BaseModel):
     value: str
     _is_metadata: bool = False
 
-    @root_validator(pre=True)
-    def set_meta(cls, values: Dict) -> Dict:
+    @model_validator(mode="before")
+    @classmethod
+    def set_meta(cls, values: Dict) -> Any:
         """document and name are reserved arcee keys. Anything else is metadata"""
         values["_is_meta"] = values.get("field_name") not in ["document", "name"]
         return values