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"""Simple in memory docstore in the form of a dict."""
from typing import Dict, Union
from langchain.docstore.base import AddableMixin, Docstore
from langchain.docstore.document import Document
class InMemoryDocstore(Docstore, AddableMixin):
"""Simple in memory docstore in the form of a dict."""
def __init__(self, _dict: Dict[str, Document]):
"""Initialize with dict."""
self._dict = _dict
def add(self, texts: Dict[str, Document]) -> None:
"""Add texts to in memory dictionary."""
overlapping = set(texts).intersection(self._dict)
if overlapping:
raise ValueError(f"Tried to add ids that already exist: {overlapping}")
self._dict = dict(self._dict, **texts)
def search(self, search: str) -> Union[str, Document]:
"""Search via direct lookup."""
if search not in self._dict:
return f"ID {search} not found."
else:
return self._dict[search]
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