core[minor]: move document compressor base (#17910)

libs/langchain/langchain/retrievers/document_compressors/base.py

@@ -1,38 +1,15 @@
-from abc import ABC, abstractmethod
 from inspect import signature
 from typing import List, Optional, Sequence, Union
 
-from langchain_core.documents import BaseDocumentTransformer, Document
-from langchain_core.pydantic_v1 import BaseModel
-from langchain_core.runnables.config import run_in_executor
+from langchain_core.documents import (
+    BaseDocumentCompressor,
+    BaseDocumentTransformer,
+    Document,
+)
 
 from langchain.callbacks.manager import Callbacks
 
 
-class BaseDocumentCompressor(BaseModel, ABC):
-    """Base class for document compressors."""
-
-    @abstractmethod
-    def compress_documents(
-        self,
-        documents: Sequence[Document],
-        query: str,
-        callbacks: Optional[Callbacks] = None,
-    ) -> Sequence[Document]:
-        """Compress retrieved documents given the query context."""
-
-    async def acompress_documents(
-        self,
-        documents: Sequence[Document],
-        query: str,
-        callbacks: Optional[Callbacks] = None,
-    ) -> Sequence[Document]:
-        """Compress retrieved documents given the query context."""
-        return await run_in_executor(
-            None, self.compress_documents, documents, query, callbacks
-        )
-
-
 class DocumentCompressorPipeline(BaseDocumentCompressor):
     """Document compressor that uses a pipeline of Transformers."""