Files
langchain/libs/community/langchain_community/graphs/graph_document.py
Harrison Chase 8516a03a02 langchain-community[major]: Upgrade community to pydantic 2 (#26011)
This PR upgrades langchain-community to pydantic 2.


* Most of this PR was auto-generated using code mods with gritql
(https://github.com/eyurtsev/migrate-pydantic/tree/main)
* Subsequently, some code was fixed manually due to accommodate
differences between pydantic 1 and 2

Breaking Changes:

- Use TEXTEMBED_API_KEY and TEXTEMBEB_API_URL for env variables for text
embed integrations:
cbea780492

Other changes:

- Added pydantic_settings as a required dependency for community. This
may be removed if we have enough time to convert the dependency into an
optional one.

---------

Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>
2024-09-05 14:07:10 -04:00

52 lines
1.5 KiB
Python

from __future__ import annotations
from typing import List, Union
from langchain_core.documents import Document
from langchain_core.load.serializable import Serializable
from pydantic import Field
class Node(Serializable):
"""Represents a node in a graph with associated properties.
Attributes:
id (Union[str, int]): A unique identifier for the node.
type (str): The type or label of the node, default is "Node".
properties (dict): Additional properties and metadata associated with the node.
"""
id: Union[str, int]
type: str = "Node"
properties: dict = Field(default_factory=dict)
class Relationship(Serializable):
"""Represents a directed relationship between two nodes in a graph.
Attributes:
source (Node): The source node of the relationship.
target (Node): The target node of the relationship.
type (str): The type of the relationship.
properties (dict): Additional properties associated with the relationship.
"""
source: Node
target: Node
type: str
properties: dict = Field(default_factory=dict)
class GraphDocument(Serializable):
"""Represents a graph document consisting of nodes and relationships.
Attributes:
nodes (List[Node]): A list of nodes in the graph.
relationships (List[Relationship]): A list of relationships in the graph.
source (Document): The document from which the graph information is derived.
"""
nodes: List[Node]
relationships: List[Relationship]
source: Document