"""**Index** is used to avoid writing duplicated content
into the vectostore and to avoid over-writing content if it's unchanged.
Indexes also :
* Create knowledge graphs from data.
* Support indexing workflows from LangChain data loaders to vectorstores.
Importantly, Index keeps on working even if the content being written is derived
via a set of transformations from some source content (e.g., indexing children
documents that were derived from parent documents by chunking.)
"""
from typing import TYPE_CHECKING, Any
from langchain_core.indexing.api import IndexingResult, aindex, index
from langchain._api import create_importer
from langchain.indexes._sql_record_manager import SQLRecordManager
from langchain.indexes.vectorstore import VectorstoreIndexCreator
if TYPE_CHECKING:
from langchain_community.graphs.index_creator import GraphIndexCreator
# Create a way to dynamically look up deprecated imports.
# Used to consolidate logic for raising deprecation warnings and
# handling optional imports.
DEPRECATED_LOOKUP = {
"GraphIndexCreator": "langchain_community.graphs.index_creator",
}
_import_attribute = create_importer(__package__, deprecated_lookups=DEPRECATED_LOOKUP)
def __getattr__(name: str) -> Any:
"""Look up attributes dynamically."""
return _import_attribute(name)
__all__ = [
# Keep sorted
"aindex",
"GraphIndexCreator",
"index",
"IndexingResult",
"SQLRecordManager",
"VectorstoreIndexCreator",
]