from __future__ import annotations
import asyncio
import enum
import json
import logging
import struct
import uuid
from collections import OrderedDict
from enum import Enum
from functools import partial
from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple, Type
import numpy as np
from langchain_core.documents import Document
from langchain_core.embeddings import Embeddings
from langchain_core.vectorstores import VectorStore
from pydantic_settings import BaseSettings, SettingsConfigDict
from langchain_community.vectorstores.utils import maximal_marginal_relevance
[docs]
class DistanceStrategy(str, enum.Enum):
"""Enumerator of the Distance strategies."""
EUCLIDEAN = "l2"
COSINE = "cosine"
MAX_INNER_PRODUCT = "inner"
def _results_to_docs(docs_and_scores: Any) -> List[Document]:
"""Return docs from docs and scores."""
return [doc for doc, _ in docs_and_scores]
[docs]
class Dimension(int, Enum):
"""Some default dimensions for known embeddings."""
OPENAI = 1536
DEFAULT_DISTANCE_STRATEGY = DistanceStrategy.EUCLIDEAN
_LANGCHAIN_DEFAULT_SCHEMA_NAME = "langchain" ## Default Kinetica schema name
_LANGCHAIN_DEFAULT_COLLECTION_NAME = (
"langchain_kinetica_embeddings" ## Default Kinetica table name
)
[docs]
class KineticaSettings(BaseSettings):
"""`Kinetica` client configuration.
Attribute:
host (str) : An URL to connect to MyScale backend.
Defaults to 'localhost'.
port (int) : URL port to connect with HTTP. Defaults to 8443.
username (str) : Username to login. Defaults to None.
password (str) : Password to login. Defaults to None.
database (str) : Database name to find the table. Defaults to 'default'.
table (str) : Table name to operate on.
Defaults to 'vector_table'.
metric (str) : Metric to compute distance,
supported are ('angular', 'euclidean', 'manhattan', 'hamming',
'dot'). Defaults to 'angular'.
https://github.com/spotify/annoy/blob/main/src/annoymodule.cc#L149-L169
"""
host: str = "http://127.0.0.1"
port: int = 9191
username: Optional[str] = None
password: Optional[str] = None
database: str = _LANGCHAIN_DEFAULT_SCHEMA_NAME
table: str = _LANGCHAIN_DEFAULT_COLLECTION_NAME
metric: str = DEFAULT_DISTANCE_STRATEGY.value
def __getitem__(self, item: str) -> Any:
return getattr(self, item)
model_config = SettingsConfigDict(
env_file=".env",
env_file_encoding="utf-8",
env_prefix="kinetica_",
extra="ignore",
)
[docs]
class Kinetica(VectorStore):
"""`Kinetica` vector store.
To use, you should have the ``gpudb`` python package installed.
Args:
config: Kinetica connection settings class.
embedding_function: Any embedding function implementing
`langchain.embeddings.base.Embeddings` interface.
collection_name: The name of the collection to use. (default: langchain)
NOTE: This is not the name of the table, but the name of the collection.
The tables will be created when initializing the store (if not exists)
So, make sure the user has the right permissions to create tables.
distance_strategy: The distance strategy to use. (default: COSINE)
pre_delete_collection: If True, will delete the collection if it exists.
(default: False). Useful for testing.
engine_args: SQLAlchemy's create engine arguments.
Example:
.. code-block:: python
from langchain_community.vectorstores import Kinetica, KineticaSettings
from langchain_community.embeddings.openai import OpenAIEmbeddings
kinetica_settings = KineticaSettings(
host="http://127.0.0.1", username="", password=""
)
COLLECTION_NAME = "kinetica_store"
embeddings = OpenAIEmbeddings()
vectorstore = Kinetica.from_documents(
documents=docs,
embedding=embeddings,
collection_name=COLLECTION_NAME,
config=kinetica_settings,
)
"""
[docs]
def __init__(
self,
config: KineticaSettings,
embedding_function: Embeddings,
collection_name: str = _LANGCHAIN_DEFAULT_COLLECTION_NAME,
schema_name: str = _LANGCHAIN_DEFAULT_SCHEMA_NAME,
distance_strategy: DistanceStrategy = DEFAULT_DISTANCE_STRATEGY,
pre_delete_collection: bool = False,
logger: Optional[logging.Logger] = None,
relevance_score_fn: Optional[Callable[[float], float]] = None,
) -> None:
"""Constructor for the Kinetica class
Args:
config (KineticaSettings): a `KineticaSettings` instance
embedding_function (Embeddings): embedding function to use
collection_name (str, optional): the Kinetica table name.
Defaults to _LANGCHAIN_DEFAULT_COLLECTION_NAME.
schema_name (str, optional): the Kinetica table name.
Defaults to _LANGCHAIN_DEFAULT_SCHEMA_NAME.
distance_strategy (DistanceStrategy, optional): _description_.
Defaults to DEFAULT_DISTANCE_STRATEGY.
pre_delete_collection (bool, optional): _description_. Defaults to False.
logger (Optional[logging.Logger], optional): _description_.
Defaults to None.
"""
self._config = config
self.embedding_function = embedding_function
self.collection_name = collection_name
self.schema_name = schema_name
self._distance_strategy = distance_strategy
self.pre_delete_collection = pre_delete_collection
self.logger = logger or logging.getLogger(__name__)
self.override_relevance_score_fn = relevance_score_fn
self._db = self.__get_db(self._config)
def __post_init__(self, dimensions: int) -> None:
"""
Initialize the store.
"""
try:
from gpudb import GPUdbTable
except ImportError:
raise ImportError(
"Could not import Kinetica python API. "
"Please install it with `pip install gpudb>=7.2.2.0`."
)
self.dimensions = dimensions
dimension_field = f"vector({dimensions})"
if self.pre_delete_collection:
self.delete_schema()
self.table_name = self.collection_name
if self.schema_name is not None and len(self.schema_name) > 0:
self.table_name = f"{self.schema_name}.{self.collection_name}"
self.table_schema = [
["text", "string"],
["embedding", "bytes", dimension_field],
["metadata", "string", "json"],
["id", "string", "uuid"],
]
self.create_schema()
self.EmbeddingStore: GPUdbTable = self.create_tables_if_not_exists()
def __get_db(self, config: KineticaSettings) -> Any:
try:
from gpudb import GPUdb
except ImportError:
raise ImportError(
"Could not import Kinetica python API. "
"Please install it with `pip install gpudb>=7.2.2.0`."
)
options = GPUdb.Options()
options.username = config.username
options.password = config.password
options.skip_ssl_cert_verification = True
return GPUdb(host=config.host, options=options)
@property
def embeddings(self) -> Embeddings:
return self.embedding_function
@classmethod
def __from(
cls,
config: KineticaSettings,
texts: List[str],
embeddings: List[List[float]],
embedding: Embeddings,
dimensions: int,
metadatas: Optional[List[dict]] = None,
ids: Optional[List[str]] = None,
collection_name: str = _LANGCHAIN_DEFAULT_COLLECTION_NAME,
distance_strategy: DistanceStrategy = DEFAULT_DISTANCE_STRATEGY,
pre_delete_collection: bool = False,
logger: Optional[logging.Logger] = None,
*,
schema_name: str = _LANGCHAIN_DEFAULT_SCHEMA_NAME,
**kwargs: Any,
) -> Kinetica:
"""Class method to assist in constructing the `Kinetica` store instance
using different combinations of parameters
Args:
config (KineticaSettings): a `KineticaSettings` instance
texts (List[str]): The list of texts to generate embeddings for and store
embeddings (List[List[float]]): List of embeddings
embedding (Embeddings): the Embedding function
dimensions (int): The number of dimensions the embeddings have
metadatas (Optional[List[dict]], optional): List of JSON data associated
with each text. Defaults to None.
ids (Optional[List[str]], optional): List of unique IDs (UUID by default)
associated with each text. Defaults to None.
collection_name (str, optional): Kinetica table name.
Defaults to _LANGCHAIN_DEFAULT_COLLECTION_NAME.
schema_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_SCHEMA_NAME.
distance_strategy (DistanceStrategy, optional): Not used for now.
Defaults to DEFAULT_DISTANCE_STRATEGY.
pre_delete_collection (bool, optional): Whether to delete the Kinetica
schema or not. Defaults to False.
logger (Optional[logging.Logger], optional): Logger to use for logging at
different levels. Defaults to None.
Returns:
Kinetica: An instance of Kinetica class
"""
if ids is None:
ids = [str(uuid.uuid4()) for _ in texts]
if not metadatas:
metadatas = [{} for _ in texts]
store = cls(
config=config,
collection_name=collection_name,
schema_name=schema_name,
embedding_function=embedding,
distance_strategy=distance_strategy,
pre_delete_collection=pre_delete_collection,
logger=logger,
**kwargs,
)
store.__post_init__(dimensions)
store.add_embeddings(
texts=texts, embeddings=embeddings, metadatas=metadatas, ids=ids, **kwargs
)
return store
[docs]
def create_tables_if_not_exists(self) -> Any:
"""Create the table to store the texts and embeddings"""
try:
from gpudb import GPUdbTable
except ImportError:
raise ImportError(
"Could not import Kinetica python API. "
"Please install it with `pip install gpudb>=7.2.2.0`."
)
return GPUdbTable(
_type=self.table_schema,
name=self.table_name,
db=self._db,
options={"is_replicated": "true"},
)
[docs]
def drop_tables(self) -> None:
"""Delete the table"""
self._db.clear_table(
f"{self.table_name}", options={"no_error_if_not_exists": "true"}
)
[docs]
def create_schema(self) -> None:
"""Create a new Kinetica schema"""
self._db.create_schema(self.schema_name)
[docs]
def delete_schema(self) -> None:
"""Delete a Kinetica schema with cascade set to `true`
This method will delete a schema with all tables in it.
"""
self.logger.debug("Trying to delete collection")
self._db.drop_schema(
self.schema_name, {"no_error_if_not_exists": "true", "cascade": "true"}
)
[docs]
def add_embeddings(
self,
texts: Iterable[str],
embeddings: List[List[float]],
metadatas: Optional[List[dict]] = None,
ids: Optional[List[str]] = None,
**kwargs: Any,
) -> List[str]:
"""Add embeddings to the vectorstore.
Args:
texts: Iterable of strings to add to the vectorstore.
embeddings: List of list of embedding vectors.
metadatas: List of metadatas associated with the texts.
ids: List of ids for the text embedding pairs
kwargs: vectorstore specific parameters
"""
if ids is None:
ids = [str(uuid.uuid4()) for _ in texts]
if not metadatas:
metadatas = [{} for _ in texts]
records = []
for text, embedding, metadata, id in zip(texts, embeddings, metadatas, ids):
buf = struct.pack("%sf" % self.dimensions, *embedding)
records.append([text, buf, json.dumps(metadata), id])
self.EmbeddingStore.insert_records(records)
return ids
[docs]
def add_texts(
self,
texts: Iterable[str],
metadatas: Optional[List[dict]] = None,
ids: Optional[List[str]] = None,
**kwargs: Any,
) -> List[str]:
"""Run more texts through the embeddings and add to the vectorstore.
Args:
texts: Iterable of strings to add to the vectorstore.
metadatas: Optional list of metadatas (JSON data) associated with the texts.
ids: List of IDs (UUID) for the texts supplied; will be generated if None
kwargs: vectorstore specific parameters
Returns:
List of ids from adding the texts into the vectorstore.
"""
embeddings = self.embedding_function.embed_documents(list(texts))
self.dimensions = len(embeddings[0])
if not hasattr(self, "EmbeddingStore"):
self.__post_init__(self.dimensions)
return self.add_embeddings(
texts=texts, embeddings=embeddings, metadatas=metadatas, ids=ids, **kwargs
)
[docs]
def similarity_search(
self,
query: str,
k: int = 4,
filter: Optional[dict] = None,
**kwargs: Any,
) -> List[Document]:
"""Run similarity search with Kinetica with distance.
Args:
query (str): Query text to search for.
k (int): Number of results to return. Defaults to 4.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List of Documents most similar to the query.
"""
embedding = self.embedding_function.embed_query(text=query)
return self.similarity_search_by_vector(
embedding=embedding,
k=k,
filter=filter,
)
[docs]
def similarity_search_with_score(
self,
query: str,
k: int = 4,
filter: Optional[dict] = None,
) -> List[Tuple[Document, float]]:
"""Return docs most similar to query.
Args:
query: Text to look up documents similar to.
k: Number of Documents to return. Defaults to 4.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List of Documents most similar to the query and score for each
"""
embedding = self.embedding_function.embed_query(query)
docs = self.similarity_search_with_score_by_vector(
embedding=embedding, k=k, filter=filter
)
return docs
[docs]
def similarity_search_with_score_by_vector(
self,
embedding: List[float],
k: int = 4,
filter: Optional[dict] = None,
) -> List[Tuple[Document, float]]:
# from gpudb import GPUdbException
resp: Dict = self.__query_collection(embedding, k, filter)
if resp and resp["status_info"]["status"] == "OK" and "records" in resp:
records: OrderedDict = resp["records"]
results = list(zip(*list(records.values())))
return self._results_to_docs_and_scores(results)
self.logger.error(resp["status_info"]["message"])
# raise GPUdbException(resp["status_info"]["message"])
return []
[docs]
def similarity_search_by_vector(
self,
embedding: List[float],
k: int = 4,
filter: Optional[dict] = None,
**kwargs: Any,
) -> List[Document]:
"""Return docs most similar to embedding vector.
Args:
embedding: Embedding to look up documents similar to.
k: Number of Documents to return. Defaults to 4.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List of Documents most similar to the query vector.
"""
docs_and_scores = self.similarity_search_with_score_by_vector(
embedding=embedding, k=k, filter=filter
)
return [doc for doc, _ in docs_and_scores]
def _results_to_docs_and_scores(self, results: Any) -> List[Tuple[Document, float]]:
"""Return docs and scores from results."""
docs = (
[
(
Document(
page_content=result[0],
metadata=json.loads(result[1]),
),
result[2] if self.embedding_function is not None else None,
)
for result in results
]
if len(results) > 0
else []
)
return docs
def _select_relevance_score_fn(self) -> Callable[[float], float]:
"""
The 'correct' relevance function
may differ depending on a few things, including:
- the distance / similarity metric used by the VectorStore
- the scale of your embeddings (OpenAI's are unit normed. Many others are not!)
- embedding dimensionality
- etc.
"""
if self.override_relevance_score_fn is not None:
return self.override_relevance_score_fn
# Default strategy is to rely on distance strategy provided
# in vectorstore constructor
if self._distance_strategy == DistanceStrategy.COSINE:
return self._cosine_relevance_score_fn
elif self._distance_strategy == DistanceStrategy.EUCLIDEAN:
return self._euclidean_relevance_score_fn
elif self._distance_strategy == DistanceStrategy.MAX_INNER_PRODUCT:
return self._max_inner_product_relevance_score_fn
else:
raise ValueError(
"No supported normalization function"
f" for distance_strategy of {self._distance_strategy}."
"Consider providing relevance_score_fn to Kinetica constructor."
)
@property
def distance_strategy(self) -> str:
if self._distance_strategy == DistanceStrategy.EUCLIDEAN:
return "l2_distance"
elif self._distance_strategy == DistanceStrategy.COSINE:
return "cosine_distance"
elif self._distance_strategy == DistanceStrategy.MAX_INNER_PRODUCT:
return "dot_product"
else:
raise ValueError(
f"Got unexpected value for distance: {self._distance_strategy}. "
f"Should be one of {', '.join([ds.value for ds in DistanceStrategy])}."
)
def __query_collection(
self,
embedding: List[float],
k: int = 4,
filter: Optional[Dict[str, str]] = None,
) -> Dict:
"""Query the collection."""
# if filter is not None:
# filter_clauses = []
# for key, value in filter.items():
# IN = "in"
# if isinstance(value, dict) and IN in map(str.lower, value):
# value_case_insensitive = {
# k.lower(): v for k, v in value.items()
# }
# filter_by_metadata = self.EmbeddingStore.cmetadata[
# key
# ].astext.in_(value_case_insensitive[IN])
# filter_clauses.append(filter_by_metadata)
# else:
# filter_by_metadata = self.EmbeddingStore.cmetadata[
# key
# ].astext == str(value)
# filter_clauses.append(filter_by_metadata)
json_filter = json.dumps(filter) if filter is not None else None
where_clause = (
f" where '{json_filter}' = JSON(metadata) "
if json_filter is not None
else ""
)
embedding_str = "[" + ",".join([str(x) for x in embedding]) + "]"
dist_strategy = self.distance_strategy
query_string = f"""
SELECT text, metadata, {dist_strategy}(embedding, '{embedding_str}')
as distance, embedding
FROM "{self.schema_name}"."{self.collection_name}"
{where_clause}
ORDER BY distance asc NULLS LAST
LIMIT {k}
"""
self.logger.debug(query_string)
resp = self._db.execute_sql_and_decode(query_string)
self.logger.debug(resp)
return resp
[docs]
def max_marginal_relevance_search_with_score_by_vector(
self,
embedding: List[float],
k: int = 4,
fetch_k: int = 20,
lambda_mult: float = 0.5,
filter: Optional[Dict[str, str]] = None,
**kwargs: Any,
) -> List[Tuple[Document, float]]:
"""Return docs selected using the maximal marginal relevance with score
to embedding vector.
Maximal marginal relevance optimizes for similarity to query AND diversity
among selected documents.
Args:
embedding: Embedding to look up documents similar to.
k (int): Number of Documents to return. Defaults to 4.
fetch_k (int): Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
lambda_mult (float): Number between 0 and 1 that determines the degree
of diversity among the results with 0 corresponding
to maximum diversity and 1 to minimum diversity.
Defaults to 0.5.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List[Tuple[Document, float]]: List of Documents selected by maximal marginal
relevance to the query and score for each.
"""
resp = self.__query_collection(embedding=embedding, k=fetch_k, filter=filter)
records: OrderedDict = resp["records"]
results = list(zip(*list(records.values())))
embedding_list = [
struct.unpack("%sf" % self.dimensions, embedding)
for embedding in records["embedding"]
]
mmr_selected = maximal_marginal_relevance(
np.array(embedding, dtype=np.float32),
embedding_list,
k=k,
lambda_mult=lambda_mult,
)
candidates = self._results_to_docs_and_scores(results)
return [r for i, r in enumerate(candidates) if i in mmr_selected]
[docs]
def max_marginal_relevance_search(
self,
query: str,
k: int = 4,
fetch_k: int = 20,
lambda_mult: float = 0.5,
filter: Optional[Dict[str, str]] = None,
**kwargs: Any,
) -> List[Document]:
"""Return docs selected using the maximal marginal relevance.
Maximal marginal relevance optimizes for similarity to query AND diversity
among selected documents.
Args:
query (str): Text to look up documents similar to.
k (int): Number of Documents to return. Defaults to 4.
fetch_k (int): Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
lambda_mult (float): Number between 0 and 1 that determines the degree
of diversity among the results with 0 corresponding
to maximum diversity and 1 to minimum diversity.
Defaults to 0.5.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List[Document]: List of Documents selected by maximal marginal relevance.
"""
embedding = self.embedding_function.embed_query(query)
return self.max_marginal_relevance_search_by_vector(
embedding,
k=k,
fetch_k=fetch_k,
lambda_mult=lambda_mult,
filter=filter,
**kwargs,
)
[docs]
def max_marginal_relevance_search_with_score(
self,
query: str,
k: int = 4,
fetch_k: int = 20,
lambda_mult: float = 0.5,
filter: Optional[dict] = None,
**kwargs: Any,
) -> List[Tuple[Document, float]]:
"""Return docs selected using the maximal marginal relevance with score.
Maximal marginal relevance optimizes for similarity to query AND diversity
among selected documents.
Args:
query (str): Text to look up documents similar to.
k (int): Number of Documents to return. Defaults to 4.
fetch_k (int): Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
lambda_mult (float): Number between 0 and 1 that determines the degree
of diversity among the results with 0 corresponding
to maximum diversity and 1 to minimum diversity.
Defaults to 0.5.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List[Tuple[Document, float]]: List of Documents selected by maximal marginal
relevance to the query and score for each.
"""
embedding = self.embedding_function.embed_query(query)
docs = self.max_marginal_relevance_search_with_score_by_vector(
embedding=embedding,
k=k,
fetch_k=fetch_k,
lambda_mult=lambda_mult,
filter=filter,
**kwargs,
)
return docs
[docs]
def max_marginal_relevance_search_by_vector(
self,
embedding: List[float],
k: int = 4,
fetch_k: int = 20,
lambda_mult: float = 0.5,
filter: Optional[Dict[str, str]] = None,
**kwargs: Any,
) -> List[Document]:
"""Return docs selected using the maximal marginal relevance
to embedding vector.
Maximal marginal relevance optimizes for similarity to query AND diversity
among selected documents.
Args:
embedding (str): Text to look up documents similar to.
k (int): Number of Documents to return. Defaults to 4.
fetch_k (int): Number of Documents to fetch to pass to MMR algorithm.
Defaults to 20.
lambda_mult (float): Number between 0 and 1 that determines the degree
of diversity among the results with 0 corresponding
to maximum diversity and 1 to minimum diversity.
Defaults to 0.5.
filter (Optional[Dict[str, str]]): Filter by metadata. Defaults to None.
Returns:
List[Document]: List of Documents selected by maximal marginal relevance.
"""
docs_and_scores = self.max_marginal_relevance_search_with_score_by_vector(
embedding,
k=k,
fetch_k=fetch_k,
lambda_mult=lambda_mult,
filter=filter,
**kwargs,
)
return _results_to_docs(docs_and_scores)
[docs]
async def amax_marginal_relevance_search_by_vector(
self,
embedding: List[float],
k: int = 4,
fetch_k: int = 20,
lambda_mult: float = 0.5,
filter: Optional[Dict[str, str]] = None,
**kwargs: Any,
) -> List[Document]:
"""Return docs selected using the maximal marginal relevance."""
# This is a temporary workaround to make the similarity search
# asynchronous. The proper solution is to make the similarity search
# asynchronous in the vector store implementations.
func = partial(
self.max_marginal_relevance_search_by_vector,
embedding,
k=k,
fetch_k=fetch_k,
lambda_mult=lambda_mult,
filter=filter,
**kwargs,
)
return await asyncio.get_event_loop().run_in_executor(None, func)
[docs]
@classmethod
def from_texts(
cls: Type[Kinetica],
texts: List[str],
embedding: Embeddings,
metadatas: Optional[List[dict]] = None,
config: KineticaSettings = KineticaSettings(),
collection_name: str = _LANGCHAIN_DEFAULT_COLLECTION_NAME,
distance_strategy: DistanceStrategy = DEFAULT_DISTANCE_STRATEGY,
ids: Optional[List[str]] = None,
pre_delete_collection: bool = False,
*,
schema_name: str = _LANGCHAIN_DEFAULT_SCHEMA_NAME,
**kwargs: Any,
) -> Kinetica:
"""Adds the texts passed in to the vector store and returns it
Args:
cls (Type[Kinetica]): Kinetica class
texts (List[str]): A list of texts for which the embeddings are generated
embedding (Embeddings): List of embeddings
metadatas (Optional[List[dict]], optional): List of dicts, JSON
describing the texts/documents. Defaults to None.
config (KineticaSettings): a `KineticaSettings` instance
collection_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_COLLECTION_NAME.
schema_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_SCHEMA_NAME.
distance_strategy (DistanceStrategy, optional): Distance strategy
e.g., l2, cosine etc.. Defaults to DEFAULT_DISTANCE_STRATEGY.
ids (Optional[List[str]], optional): A list of UUIDs for each
text/document. Defaults to None.
pre_delete_collection (bool, optional): Indicates whether the Kinetica
schema is to be deleted or not. Defaults to False.
Returns:
Kinetica: a `Kinetica` instance
"""
if len(texts) == 0:
raise ValueError("texts is empty")
try:
first_embedding = embedding.embed_documents(texts[0:1])
except NotImplementedError:
first_embedding = [embedding.embed_query(texts[0])]
dimensions = len(first_embedding[0])
embeddings = embedding.embed_documents(list(texts))
kinetica_store = cls.__from(
texts=texts,
embeddings=embeddings,
embedding=embedding,
dimensions=dimensions,
config=config,
metadatas=metadatas,
ids=ids,
collection_name=collection_name,
schema_name=schema_name,
distance_strategy=distance_strategy,
pre_delete_collection=pre_delete_collection,
**kwargs,
)
return kinetica_store
[docs]
@classmethod
def from_embeddings(
cls: Type[Kinetica],
text_embeddings: List[Tuple[str, List[float]]],
embedding: Embeddings,
metadatas: Optional[List[dict]] = None,
config: KineticaSettings = KineticaSettings(),
dimensions: int = Dimension.OPENAI,
collection_name: str = _LANGCHAIN_DEFAULT_COLLECTION_NAME,
distance_strategy: DistanceStrategy = DEFAULT_DISTANCE_STRATEGY,
ids: Optional[List[str]] = None,
pre_delete_collection: bool = False,
*,
schema_name: str = _LANGCHAIN_DEFAULT_SCHEMA_NAME,
**kwargs: Any,
) -> Kinetica:
"""Adds the embeddings passed in to the vector store and returns it
Args:
cls (Type[Kinetica]): Kinetica class
text_embeddings (List[Tuple[str, List[float]]]): A list of texts
and the embeddings
embedding (Embeddings): List of embeddings
metadatas (Optional[List[dict]], optional): List of dicts, JSON describing
the texts/documents. Defaults to None.
config (KineticaSettings): a `KineticaSettings` instance
dimensions (int, optional): Dimension for the vector data, if not passed a
default will be used. Defaults to Dimension.OPENAI.
collection_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_COLLECTION_NAME.
schema_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_SCHEMA_NAME.
distance_strategy (DistanceStrategy, optional): Distance strategy
e.g., l2, cosine etc.. Defaults to DEFAULT_DISTANCE_STRATEGY.
ids (Optional[List[str]], optional): A list of UUIDs for each text/document.
Defaults to None.
pre_delete_collection (bool, optional): Indicates whether the
Kinetica schema is to be deleted or not. Defaults to False.
Returns:
Kinetica: a `Kinetica` instance
"""
texts = [t[0] for t in text_embeddings]
embeddings = [t[1] for t in text_embeddings]
dimensions = len(embeddings[0])
return cls.__from(
texts=texts,
embeddings=embeddings,
embedding=embedding,
dimensions=dimensions,
config=config,
metadatas=metadatas,
ids=ids,
collection_name=collection_name,
schema_name=schema_name,
distance_strategy=distance_strategy,
pre_delete_collection=pre_delete_collection,
**kwargs,
)
[docs]
@classmethod
def from_documents(
cls: Type[Kinetica],
documents: List[Document],
embedding: Embeddings,
config: KineticaSettings = KineticaSettings(),
metadatas: Optional[List[dict]] = None,
collection_name: str = _LANGCHAIN_DEFAULT_COLLECTION_NAME,
distance_strategy: DistanceStrategy = DEFAULT_DISTANCE_STRATEGY,
ids: Optional[List[str]] = None,
pre_delete_collection: bool = False,
*,
schema_name: str = _LANGCHAIN_DEFAULT_SCHEMA_NAME,
**kwargs: Any,
) -> Kinetica:
"""Adds the list of `Document` passed in to the vector store and returns it
Args:
cls (Type[Kinetica]): Kinetica class
texts (List[str]): A list of texts for which the embeddings are generated
embedding (Embeddings): List of embeddings
config (KineticaSettings): a `KineticaSettings` instance
metadatas (Optional[List[dict]], optional): List of dicts, JSON describing
the texts/documents. Defaults to None.
collection_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_COLLECTION_NAME.
schema_name (str, optional): Kinetica schema name.
Defaults to _LANGCHAIN_DEFAULT_SCHEMA_NAME.
distance_strategy (DistanceStrategy, optional): Distance strategy
e.g., l2, cosine etc.. Defaults to DEFAULT_DISTANCE_STRATEGY.
ids (Optional[List[str]], optional): A list of UUIDs for each text/document.
Defaults to None.
pre_delete_collection (bool, optional): Indicates whether the Kinetica
schema is to be deleted or not. Defaults to False.
Returns:
Kinetica: a `Kinetica` instance
"""
texts = [d.page_content for d in documents]
metadatas = [d.metadata for d in documents]
return cls.from_texts(
texts=texts,
embedding=embedding,
metadatas=metadatas,
config=config,
collection_name=collection_name,
schema_name=schema_name,
distance_strategy=distance_strategy,
ids=ids,
pre_delete_collection=pre_delete_collection,
**kwargs,
)
